N-CSR 1 d667557dncsr.htm PENN SERIES FUND, INC. Penn Series Fund, Inc.

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

FORM N-CSR

 

 

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-03459

 

 

Penn Series Funds, Inc.

(Exact name of registrant as specified in charter)

 

 

600 Dresher Road

Horsham, PA 19044

(Address of principal executive offices) (Zip code)

 

 

Steven Viola

Penn Series Funds, Inc.

600 Dresher Road

Horsham, PA 19044

(Name and address of agent for service)

 

 

Registrant’s telephone number, including area code: (215) 956-8129

Date of fiscal year end: December 31

Date of reporting period: December 31, 2020

 

 

Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget (“OMB”) control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 100 F Street, NE, Washington, DC 20549. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

 

 

 


Item 1.

Reports to Stockholders.

 

  (a)

Include a copy of the report transmitted to stockholders pursuant to Rule 30e-1 under the Act (17 CFR 270.30e-1).

The Report to Shareholders is attached herewith.


Penn Series Funds, Inc.
Annual Report
As of December 31, 2020
Available through Penn Mutual Variable Products


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Dear Investor:
Thank you for your continued affiliation with The Penn Mutual Life Insurance Company. The confidence and trust you place in us reaffirms our commitment to helping policyholders take advantage of all life’s possibilities. We also take pride in being a financially strong mutual insurance company that delivers on our promises, and I’m very pleased to bring you the following capital markets summary. Please remember that regardless of what the markets may bring, short-term performance changes should not distract you from your long-term financial plan, and it’s a good idea to meet with your financial professional regularly to make sure that your asset allocation remains on target.
2020 will be remembered as a year where our nation and the entire world faced unprecedented challenges but also displayed incredible resilience. The longest U.S. economic expansion on record came to an abrupt halt in March as the coronavirus pandemic forced a national shutdown. The employment picture in the U.S. quickly transitioned from the best in nearly 50 years to more than 20 million jobs lost by the April employment report. Non-financial service sectors such as airlines, cruise lines, restaurants and lodging bore the brunt of the shutdowns and related job losses.
Stocks despite hitting new highs in February, suffered over a 30 percent decline in just over a month. The contraction in U.S. economic activity was the sharpest on record, declining 31 percent during the second quarter. Despite continued stress across many businesses still challenged by the pandemic, fast action in March by the Federal Reserve (Fed) provided much needed liquidity to markets and the economy. Passage of the Coronavirus Aid, Relief, and Economic Security (CARES) Act quickly followed the Fed action and helped to limit permanent damage to the U.S. economy. While the depth of the recession was extreme, the duration was short as the third quarter gross domestic product rebounded with the largest increase on record, up approximately 33 percent. In a year marked by a string of unprecedented events, one market trend that held steady was the outperformance of growth over value stocks. Technology companies have been insulated from the economic fallout during the pandemic and, in certain cases, benefited from the increased reliance on technology and acceleration of changing consumer habits. In this very volatile environment, the U.S. stock market, as measured by the Wilshire 5000 Total Market Index, returned 20.82 percent for the full twelve-month period ending December 31.
On a relative basis, large-capitalization stocks provided higher returns than mid- and small-capitalization stocks during the year. Large-capitalization stocks, as measured by the Russell 1000 Index, returned 20.96 percent, while mid-capitalization stocks, as measured by the Russell Midcap Index returned 17.10 percent and small-capitalization stocks, as measured by the Russell 2000 Index, returned 19.96 percent. From a style perspective, despite value stocks modestly outperforming growth stocks in the fourth quarter, growth outperformed value for the full year in all market capitalizations. The widest disparity being in the large-capitalization space. For instance, large-capitalization growth stocks, as measured by the Russell 1000 Growth Index returned 38.49 percent while large-capitalization value stocks, as measured by the Russell 1000 Value Index, returned 2.80 percent.
International markets also suffered from the pandemic-driven economic shutdown and experienced extreme volatility throughout the year. Global equity markets generally failed to keep pace with the size of the rebound for U.S. equities, with emerging markets being the exception. Investors remained focused on divergences in the path of the pandemic among different countries. In this environment, emerging markets stocks, thanks to their almost 20 percent fourth quarter return, ended the year with a strong 18.31 percent return, as measured by the MSCI Emerging Markets Index and developed international stocks returned 7.82 percent, as measured by the MSCI EAFE Index.
Fixed-income markets closed the year on a strong note after positive vaccine news helped bring a light at the end of the tunnel for the pandemic. During the twelve-month period, investment-grade bonds, as measured by the Bloomberg Barclays U.S. Aggregate Bond Index, returned a solid 7.51 percent and high-yield bonds, as measured by the Bloomberg Barclays U.S. Corporate High Yield Bond Index, returned 7.11 percent. Treasury yields tumbled to historic lows in early March as investors sought safety during the extreme market volatility and credit stress. They have remained in a tight trading range since then despite some upward pressure at the long end of the yield curve during the fourth quarter. The Fed remains committed to use its full range of tools to support the economic recovery and expects to keep short-term rates at zero through the end of 2023.
Once again, we thank you for the privilege of serving your financial needs and encourage you to work closely with your financial professional to continue to explore your options throughout all life’s stages.
Sincerely,
David M. O’Malley
President and Chief Operating Officer
The Penn Mutual Life Insurance Company
President
Penn Series Funds, Inc.

Source: This material is not intended to be relied upon as a forecast, research or investment advice, and is not a recommendation, offer or solicitation to buy or sell any securities or to adopt any investment strategy. The opinions expressed are subject to change as subsequent conditions vary. All economic and performance information is historical and not indicative of future results.


Table of Contents
Penn Series Funds, Inc. Annual Report
Management’s Discussion of Fund Performance (Unaudited)

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1


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Limited Maturity Bond Fund
The Penn Series Limited Maturity Bond Fund returned 3.65% for the twelve-month period ending December 31, 2020, compared to the 3.33% return for its benchmark, the Bloomberg Barclays Capital U.S. Government/Credit 1-3 Year Bond Index, for the same period.
The Federal Reserve (Fed) implemented two emergency meeting interest rate cuts in early March bringing short-term rates back to zero as the coronavirus pandemic forced a nationwide shutdown. The United States economy has gradually recovered during the second half of the year but risks remain in light of the recent increase in COVID-19 cases. Fed policymakers expect to keep short-term rates at the zero lower bound through the end of 2023 given remaining uncertainty on the path of the pandemic. The Treasury 2-year note yield fell nearly 150 basis points during 2020 to finish the year at 0.12%.
Currently, we are modestly underweight duration, or interest rate risk, in the Fund. Even though short-term rates are likely to stay range-bound in 2021, improving news on the economy and inflation as vaccines are more widely distributed may force the Fed to reconsider its commitment to the current zero-interest-rate policy.
Performance benefited from our disciplined approach to duration and credit management during this year’s extraordinary market volatility. We are currently maintaining our overweight to high-quality structured securities including collateralized loan obligations, student loan asset-backed securities and securitized aircraft debt, while opportunistically reducing exposure within the more fully valued corporate sector.
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Limited Maturity Bond Fund on December 31, 2010 would have grown to $11,934. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Bloomberg Barclays Capital U.S. Government Credit 1–3 Year Bond Index, during the same period. A $10,000 investment in the Bloomberg Barclays Capital U.S. Government Credit 1–3 Year Bond Index on December 31, 2010 would have grown to $11,715.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Limited Maturity Bond Fund 3.65%   2.84%   1.78%
Bloomberg Barclays Capital U.S. Government/Credit 1-3 Year Bond Index 3.33%   2.21%   1.60%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Corporate Bonds 44.6 %
Asset Backed Securities 29.3 %
Commercial Mortgage Backed Securities 12.1 %
U.S. Treasury Obligations 9.3 %
Residential Mortgage Backed Securities 4.7 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments.
 
2


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Quality Bond Fund
The Penn Series Quality Bond Fund returned 8.43% for the twelve-month period ending December 31, 2020, compared to the 7.51% return for its benchmark, the Bloomberg Barclays U.S. Aggregate Bond Index.
2020 witnessed historic financial market volatility in March as economies across the globe shut down to contain the spread of the coronavirus. The Federal Reserve (Fed) implemented two emergency meeting rate cuts bringing short-term rates back to zero and Treasury yields moved to record low territory. Credit spreads widened dramatically to the highest levels since the Great Financial Crisis. The extreme economic and financial market stress spurred numerous fiscal and monetary policy responses including new Fed facilities to purchase corporate bonds.
The unprecedented measures of government stimulus helped to fuel a recovery in both the economy and capital markets. Markets closed the year strongly after positive vaccine news was announced in early November. Investment grade corporate credit spreads ended 2020 at 96 basis points (bps), almost exactly where they started, with corporate bonds outperforming duration-matched Treasuries by 49 bps.
Opportunistic management of corporate and securitized debt during the extreme credit market volatility benefited Fund performance versus benchmark. Yield curve steepening during the second half of 2020 was also a positive contributor to Fund results.
We expect additional yield curve steepening in 2021 with mounting inflation pressures and record new supply likely to keep upward pressure on interest rates at the long-end of the yield curve. Current overweight positioning in the Fund include multi-family commercial mortgage-backed securities, securitized aircraft debt and high-quality collateralized loan obligations (CLOs).
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Quality Bond Fund on December 31, 2010 would have grown to $15,017. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Bloomberg Barclays U.S. Aggregate Bond Index, during the same period. A $10,000 investment in the Bloomberg Barclays U.S. Aggregate Bond Index on December 31, 2010 would have grown to $14,576.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Quality Bond Fund 8.43%   5.24%   4.15%
Bloomberg Barclays U.S. Aggregate Bond Index 7.51%   4.44%   3.84%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Corporate Bonds 44.9 %
Commercial Mortgage Backed Securities 18.8 %
Residential Mortgage Backed Securities 13.4 %
Asset Backed Securities 13.3 %
U.S. Treasury Obligations 6.2 %
Municipal Bonds 3.4 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments.
 
3


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
High Yield Bond Fund
The Penn Series High Yield Bond Fund returned 7.52% for the twelve-month period ending December 31, 2020, compared to the 5.48% return for its benchmark, the Credit Suisse High Yield Bond Index for the same time period.
After an emotional and tumultuous 10 months, 2020 ended very strong as markets began to increasingly price in a return to a more normalized economic environment. In addition, the expectation of political gridlock and thus incremental policy changes boosted risk appetite as the year closed. The high yield market rebounded sharply from its March and April lows thanks to strong fiscal and monetary stimulus. In addition, record new issuance helped alleviate corporate liquidity and maturity concerns. Treasury rates, the main driver of total returns, rallied sharply throughout the year with the 10-year falling about 90 basis points. The Credit Suisse High Yield Bond Index returned 5.7% in November and December 2020 alone, post positive vaccine and election news, driven by material outperformance in CCC credit and lower- rated energy bonds. Still, higher quality BB-rated bonds were the strongest performing segment of the market for the full year. Current valuations reflect materially lower expected defaults and downgrade activity for 2021 and 2022.
The Fund entered 2020 underweight energy and lower quality risk, which aided performance during the first quarter sell off. During the second quarter and throughout the remainder of 2020, the Fund added risk opportunistically while still maintaining its overall up-in-quality orientation. A few of the Fund's overweight sectors included secured airline paper, healthcare, industrials, and food and retail.
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the High Yield Bond Fund on December 31, 2010 would have grown to $18,936. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Credit Suisse High Yield Bond Index, during the same period. A $10,000 investment in the Credit Suisse High Yield Bond Index on December 31, 2010 would have grown to $18,720.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
High Yield Bond Fund 7.52%   8.59%   6.59%
Credit Suisse High Yield Bond Index 5.48%   8.24%   6.47%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
BB/B Rated 35.5 %
BBB/BB Rated & Above 22.2 %
BB Rated 15.3 %
B/CCC Rated 10.8 %
B Rated 8.3 %
Not Rated 3.0%
CCC and Below 2.8 %
Equity Securities 1.2 %
Loan Agreements 0.9 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments.
 
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Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Flexibly Managed Fund
The Penn Series Flexibly Managed Fund returned 17.83% for the twelve-month period ending December 31, 2020, compared to the 18.40% return of its benchmark, the S&P 500 Index for the same time period.
The portfolio posted a positive return but underperformed the all-equity S&P 500 Index in the 2020 calendar year. The portfolio’s equity holdings posted a strongly positive return, outpacing its S&P 500 Index benchmark. The portfolio’s fixed income holdings posted a positive return during the one-year period, slightly outperforming its benchmark, the Bloomberg Barclays U.S. Aggregate Bond Index.
U.S. stocks rose for the one-year period, despite the coronavirus pandemic and related economic dislocations. Equities declined sharply at the beginning of the year as the coronavirus spread quickly in the U.S., prompting government officials to close schools, nonessential businesses, and public facilities. Stocks rebounded during the second quarter, driven by the Federal Reserve’s and federal government’s massive stimulus efforts, as well as slowing global coronavirus infection rates. The rebound continued during much of the third quarter, as a faster-than-expected rebound in the economy coupled with reports of progress in developing several possible coronavirus vaccines and treatments boosted stocks. During the final months of the year, stocks benefited from reduced political uncertainty as Vice President Joe Biden defeated incumbent President Donald Trump in the November 3 presidential election. Stocks also received a major boost following positive announcements in the development and eventual distribution of approved coronavirus vaccines.
As always, we remain committed to finding the best risk-adjusted opportunities across the asset class spectrum to help balance our goals of preserving invested capital and generating equity-like returns over the long term with less risk than the broader equity market.
Our overall fixed income weight declined from the prior year, as we trimmed our allocations in high yield bonds and investment-grade corporates. Our largest exposure in fixed income is in bank loans, where we have found select issues that at current levels offer compelling risk-adjusted return profiles. We like that bank loans are at the top of the capital structure and the only fixed income asset class that benefits from rising interest rates; so should rates rise over the next few years off of near-historic levels, there could be additional upside.
Within equities, the information technology sector drove relative underperformance due to stock selection. Fiserv lagged within the very strong-performing information technology sector on significant disruption to its merchant acceptance business due to the coronavirus pandemic. An unexpected announcement in early May that the company’s CEO would retire in mid-2020 also raised some investor concern amid a challenging market environment. An overweight position in utilities further held back relative returns. Utilities lagged the broader market’s strong one-year return as investors mostly favored areas of the market with exposure to such things as e-commerce and the broader digitalization of the economy due to the circumstances that were caused by the coronavirus pandemic.
Conversely, the financials sector contributed to relative returns due to stock selection, while an underweight allocation was also beneficial. Intercontinental Exchange, a data service provider and global operator of exchanges, benefited from solid growth in data revenue throughout the year as well as from its less cyclical business model relative to many banks and capital markets companies. Health care also contributed due to stock choices such as Danaher. Diversified medical equipment and supplies conglomerate Danaher benefited from growing demand for diagnostic tools needed to test for the coronavirus, as well as from strong organic growth and margins from recently acquired Cytiva, formerly GE Healthcare Life Sciences. An underweight exposure to the energy sector also aided relative returns.
After a year dominated by the devastating impacts of the coronavirus pandemic, optimism has risen that the successful development of vaccines and their subsequent distribution will bring an end to economic harm the virus has left in its wake. This optimism has, however, broadened a market rally that had been more narrowly concentrated in perceived “COVID winners” earlier in 2020, leaving valuations constrained and compelling opportunities harder to come by. After initial expectations for a divided government, Democrats ultimately won control of both chambers of Congress as well as the White House, giving rise to hopes for additional economic relief. We have a balanced view of the current market and have positioned the portfolio accordingly. We remain focused on identifying high-quality businesses with strong fundamentals that we believe can deliver solid earnings and the potential for growth over the long term.
 
5


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Penn Mutual Asset Management, LLC
Investment Adviser
T. Rowe Price Associates, Inc.
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Flexibly Managed Fund on December 31, 2010 would have grown to $31,210. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the S&P 500 Index, during the same period. A $10,000 investment in the S&P 500 Index on December 31, 2010 would have grown to $36,700.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Flexibly Managed Fund 17.83%   12.90%   12.05%
S&P 500 Index 18.40%   15.22%   13.88%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Financial 20.0%
Consumer, Non-cyclical 19.8 %
Technology 15.6 %
Communications 12.4 %
Industrial 10.9 %
Utilities 10.6 %
Consumer, Cyclical 10.3 %
Basic Materials 0.0% 2
Asset Backed Securities 0.4 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
2 Less than 0.05%.
 
6


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Balanced Fund
The Penn Series Balanced Fund returned 14.77% for the twelve-month period ending December 31, 2020, compared to its benchmarks, the S&P 500 Index’s return of 18.40% and the Bloomberg Barclays U.S. Aggregate Bond Index’s return of 7.51% for the same time period.
The Balanced Fund is comprised of a target allocation of 60% to an equity fund and 40% to a fixed income fund. The equity allocation of the Fund is comprised of the Penn Series Index 500 Fund which seeks a total return that corresponds to that of the S&P 500 Index. The fixed income allocation of the Fund consists of an allocation to the Penn Series Quality Bond Fund.
At the broad asset class level, the Balanced Fund’s equity allocation performed in-line with its broad equity benchmark, the S&P 500 Index, for the twelve-month period. The Fund’s fixed income allocation outperformed the Bloomberg Barclays U.S. Aggregate Bond Index for the same period.
Quality Bond Fund’s yield curve positioning, credit risk positioning and exposure in structured products contributed positively to the performance.
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Balanced Fund on December 31, 2010 would have grown to $25,250. For the purpose of comparison, the graph also shows the change in the Fund’s benchmarks, the S&P 500 Index and the Bloomberg Barclays U.S. Aggregate Bond Index, during the same period. A $10,000 investment in the S&P 500 Index on December 31, 2010 would have grown to $36,700. A
$10,000 investment in the Bloomberg Barclays U.S. Aggregate Bond Index on December 31, 2010 would have grown to $14,576.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Balanced Fund 14.77%   10.92%   9.70%
S&P 500 Index 18.40%   15.22%   13.88%
Bloomberg Barclays U.S. Aggregate Bond Index 7.51%   4.44%   3.84%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Asset Allocation Target as of 12/31/20  
Index 500 60.0%
Intermediate Bonds 40.0%
  100.0%
 
7


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Large Growth Stock Fund
The Penn Series Large Growth Stock Fund returned 37.01% for the twelve-month period ending December 31, 2020, compared to the 38.49% return for its benchmark, the Russell 1000 Growth Index for the same time period.
Stock selection was responsible for relative underperformance, although the negative impact was partially offset by beneficial sector allocation. Information technology was the largest relative underperformer, followed by consumer discretionary and industrials and business services. Communication services and consumer staples were major relative contributors.
U.S. stocks rose for the one-year period, despite the coronavirus pandemic and related economic dislocations. Equities declined sharply at the beginning of the year as the coronavirus spread quickly in the U.S., prompting government officials to close schools, nonessential businesses, and public facilities. Stocks rebounded during the second quarter, driven by the Federal Reserve’s and federal government’s massive stimulus efforts, as well as slowing global coronavirus infection rates. The rebound continued during much of the third quarter, as a faster-than-expected rebound in the economy coupled with reports of progress in developing several possible coronavirus vaccines and treatments boosted stocks. During the final months of the year, stocks benefited from reduced political uncertainty as Vice President Joe Biden defeated incumbent President Donald Trump in the November 3 presidential election. Stocks also received a major boost following positive announcements in the development and eventual distribution of approved coronavirus vaccines. Large-cap shares outperformed their smaller peers. As measured by various Russell indices, growth stocks soundly outperformed value across all market capitalizations.
In information technology, stock choices detracted from relative results. Our underweight position in Apple detracted from relative performance as shares outperformed over the past 12 months, driven by strength from Mac and iPad (which benefited from work and learn-at-home dynamics) and better-than-feared iPhone results. We maintain an underweight position relative to the benchmark due to concerns over saturation and elongation of replacement cycles for smartphones and Apple’s ability to grow services enough to sustain high levels of growth.
Security selection in consumer discretionary also weighed on relative performance, driven by holdings in Alibaba Group Holding. However, the negative impact was slightly offset by a favorable overweight. Shares of Alibaba came under pressure following the announcement of an antitrust investigation and the cancellation of the Ant IPO, a company in which Alibaba owns a 33% stake. Alibaba continues its dominance in China’s fast-growing e-commerce industry, taking share from offline that is highly fragmented and underdeveloped.
Unfavorable stock choices in industrials and business services hindered relative results. Within the sector, our position in Boeing held back relative performance.
In contrast, the communication services sector contributed to relative returns due to strong stock choices, such as Snap. Shares of the company gained over the past 12 months due to increased user growth and engagement in response to social distancing measures, as well as higher advertiser demand and a mix shift toward higher-priced advertising solutions.
An underweight to consumer staples further contributed to relative performance as the defensive sector lagged the market in a risk-on environment.
Rapid progress with a first wave of new vaccines based on messenger RNA technology is clearly the most positive sign for the year ahead. As the pandemic hopefully recedes and economies reopen, a broader economic recovery is likely to benefit many of the sectors that were most damaged by the virus, such as travel and leisure. While a rapid economic recovery could also bring an accelerated earnings recovery, this might not translate into strong equity returns, with much of the recovery already priced into the markets. Investors seeking value opportunities will need to be careful about stock selection—seeking out companies that appear well positioned to emerge from the pandemic with lasting competitive advantages, while avoiding firms that face longer-term secular challenges.
Penn Mutual Asset Management, LLC
Investment Adviser
T. Rowe Price Associates, Inc.
Investment Sub-Adviser
 
8


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Large Growth Stock Fund on December 31, 2010 would have grown to $46,231. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 1000 Growth Index, during the same period. A $10,000 investment in the Russell 1000 Growth Index on December 31, 2010 would have grown to $48,929.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Large Growth Stock Fund 37.01%   18.87%   16.54%
Russell 1000 Growth Index 38.49%   21.00%   17.21%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Communications 32.8 %
Technology 31.7 %
Consumer, Non-cyclical 15.4 %
Consumer, Cyclical 8.6 %
Financial 6.5 %
Industrial 4.6 %
Basic Materials 0.4 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
9


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Large Cap Growth Fund
The Penn Series Large Cap Growth Fund returned 22.14% for the twelve-month period ending December 31, 2020, compared to the 38.49% return for its benchmark, the Russell 1000 Growth Index for the same time period.
Markets experienced an extraordinarily sharp selloff early in the period and, in many cases, an unusually rapid recovery later. Central banks and fiscal authorities undertook astonishing levels of stimulus to offset the economic effects of government-imposed social-distancing measures implemented to slow the spread of the COVID-19 virus. At this point, the global economy looks to have experienced the deepest, steepest and possibly shortest recession in the postwar period. However, the recovery remains subject to more than the usual number of uncertainties due to questions about the evolution of the virus, what its continued impact will be and how quickly vaccines to guard against it can be manufactured and distributed at scale, as well as the public's willingness to be inoculated.
Around the world, central banks responded quickly and massively to the crisis with programs to improve liquidity and support markets. These programs proved largely successful in helping to restore market function, ease volatility and stimulate a continued market rebound. Late in the period, the U.S. Federal Reserve adopted a new, flexible average-inflation-targeting framework, which is expected to result in the federal funds rate remaining at low levels longer than under its previous model. In developed countries, monetary easing measures were complemented by unusually large fiscal stimulus initiatives. Due to relatively manageable external liabilities and balances of payments in many countries, along with persistently low inflation, even emerging market countries were able to implement countercyclical policies — a departure from the usual market-dictated response to risk-off crises.
Compounding market uncertainty earlier in the pandemic was a crash in the price of crude oil due to a sharp drop in global demand and a disagreement between Saudi Arabia and Russia over production cuts, which resulted in an oil price war. The subsequent decline in prices undercut oil exporters, many of which are in emerging markets, as well as a large segment of the high-yield credit market. The OPEC+ group later agreed on output cuts, with shale oil producers in the U.S. also decreasing production, which, along with the gradual reopening of
some major economies and the resultant boost in demand, helped stabilize the price of crude oil.
In the immediate aftermath of the market disruption that accompanied the initial phases of the pandemic, many companies that had added significant leverage to their balance sheets in recent years by borrowing to fund dividend payments and stock buybacks halted those activities and some companies were forced to recapitalize. As markets and the economy stabilized later in the period, in many cases dividend payments and buybacks resumed. Conversely, some companies found themselves flush with liquidity, having borrowed preemptively during the worst of the crisis, only to end up with excess cash on their balance sheets.
Security selection and, to a lesser extent, an underweight position in both the information technology and consumer discretionary sectors weakened performance relative to the Russell 1000 Growth Index. Within the information technology sector, underweighting shares of computer and personal electronics maker Apple, not holding shares of computer graphics processor maker NVIDIA and the portfolio's overweight positions in financial technology service providers Fidelity National Information Services and Fiserv weighed on relative returns. Within the consumer discretionary sector, not holding shares of electric vehicle manufacturer Tesla and internet retailer Amazon.com, as well as the timing of the portfolio's overweight position in hotel operator Marriott, hurt relative results.
An overweight allocation to the financials sector also detracted from relative performance. Here, the portfolio's overweight position in risk management and human capital consulting services provider Aon hindered relative results as the stock lagged the benchmark over the reporting period.
Elsewhere, overweighting shares of medical technology companies Becton, Dickinson & Co. and Boston Scientific held back relative returns as both stocks declined during the reporting period.
Stock selection in both the industrials and health care sectors was a primary factor that benefited relative performance over the reporting period. Within the industrials sector, not holding shares of aerospace company Boeing and defense contractor Lockheed Martin both supported relative returns. Within the health care sector, not holding pharmaceutical company Merck & Co., biotechnology firm Amgen and health insurance and Medicare/Medicaid provider UnitedHealth Group, as
 
10


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
well as the timing of the portfolio's underweight position in pharmaceutical firm Eli Lilly, lifted relative performance.
Not holding any securities in the underperforming real estate sector also aided relative results. Here, not owning shares of broadcast and communication tower management firm American Tower and retail real estate property manager Simon Property were contributors to relative performance.
Stocks in other sectors that added positive relative value to performance included not holding poor-performing beverage manufacturer Coca-Cola and owning shares of strong-performing semiconductor firm Taiwan Semiconductor Manufacturing.
Penn Mutual Asset Management, LLC
Investment Adviser
MFS Investments
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Large Cap Growth Fund on December 31, 2010 would have grown to $32,825. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 1000 Growth Index, during the same period. A $10,000 investment in the Russell 1000 Growth Index on December 31, 2010 would have grown to $48,929.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Large Cap Growth Fund 22.14%   18.48%   12.62%
Russell 1000 Growth Index 38.49%   21.00%   17.21%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Technology 30.6 %
Consumer, Non-cyclical 24.1 %
Communications 12.1 %
Financial 11.1 %
Consumer, Cyclical 11.0%
Industrial 9.7 %
Basic Materials 1.4 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
 
11


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Large Core Growth Fund
The Penn Series Large Core Growth Fund returned 75.49% for the twelve-month period ending December 31, 2020, compared to the 38.49% return for its benchmark, the Russell 1000 Growth Index for the same time period.
U.S. equities reversed a steep sell-off caused by the COVID-19 pandemic shock, aided by massive fiscal and monetary stimulus that kept liquidity flowing and supported a faster-than-expected rebound in economic activity. Promising vaccine news throughout the year, along with the start of vaccine distribution across the U.S. and Europe in December 2020, also helped investors look past resurgences of the virus and renewed curbs on social and business activity that have slowed the economic recovery in the short term. Political uncertainty eased after the U.S. election in November 2020, with markets taking a positive stance on a Biden administration and the prospect for additional fiscal stimulus in 2021.
Within the Russell 1000 Growth Index, consumer discretionary, information technology and communication services were the top-performing sectors for the year, while energy (the only sector with a negative return), real estate and industrials were the weakest performers.
Counterpoint Global seeks high quality companies, which we define primarily as those with sustainable competitive advantages. We manage concentrated portfolios that are highly differentiated from the benchmark, with securities weighted on our assessment of the quality of the company and our conviction. The value added or detracted in any period of time will result from stock selection, given our philosophy and process. For the year, the Fund outperformed the Index.
The long-term investment horizon and conviction-weighted investment approach embraced by the team since 1998 can result in periods of performance deviation from the benchmark and peers. The Fund outperformed the Index in this reporting period largely due to favorable stock selection. Sector allocation had a neutral impact on relative performance.
Stock selection was the strongest across the information technology sector. Eight of the Fund’s top 10 largest contributors to relative performance were from the information technology sector. In addition, stock selection in the health care, industrials, communication
services, materials, financials and consumer discretionary sectors moderately contributed to relative outperformance.
Given the magnitude of the Fund’s outperformance relative to the benchmark, there were no meaningful sector detractors from performance. An overweight to the materials sector was unfavorable on a relative basis but was more than offset by the outperformance of our stock selection in the sector. An underweight to the consumer discretionary sector marginally detracted as well but was countered by a small relative gain from stock selection there, resulting in an overall neutral impact on relative performance.
As a team, we believe having a market outlook can be an anchor. Our focus is on assessing company prospects over a five-year horizon, and owning a portfolio of unique companies whose market value we believe can increase significantly for underlying fundamental reasons.
Penn Mutual Asset Management, LLC
Investment Adviser
Morgan Stanley Investment Management
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Large Core Growth Fund on December 31, 2010 would have grown to $51,176. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 1000 Growth Index, during the same period. A $10,000 investment in the Russell 1000 Growth Index on December 31, 2010 would have grown to $48,929.
 
12


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Large Core Growth Fund 75.49%   25.15%   17.74%
Russell 1000 Growth Index 38.49%   21.00%   17.21%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Communications 41.0%
Technology 24.2 %
Consumer, Non-cyclical 19.5 %
Industrial 7.0%
Consumer, Cyclical 3.8 %
Basic Materials 3.6 %
Financial 0.7 %
Energy 0.2 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
13


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Large Cap Value Fund
The Penn Series Large Cap Value Fund returned 2.32% for the twelve-month period ending December 31, 2020, compared to the 2.80% return for its benchmark, the Russell 1000 Value Index for the same time period.
U.S. markets recorded positive returns for the 12-month period ended December 31, 2020, erasing losses from lows reached in late March when the COVID-19 pandemic triggered a sharp decline. During the early stages of the recovery, global economies rebounded from record GDP contractions, supported by extensive monetary and fiscal stimulus, expedited vaccine development, and improving economic data. Favorable news about the efficacy of coronavirus vaccination candidates helped offset market volatility prompted by an inability to control the spread of the virus in many countries, a potentially contested U.S. presidential election and lack of additional U.S. fiscal stimulus. At the end of the period—despite surging infection rates and the emergence of a seemingly more transmissible strain of the virus—optimism over the start of vaccine distribution, clarity following the U.S. elections, and passage of both a U.S. relief package and a post-Brexit trade deal fueled a broad-based rally. For the 12-month period, large-cap stocks, led by U.S. technology companies, narrowly outperformed small-cap stocks, while growth stocks outperformed value stocks significantly in both the large- and small-cap categories.
For the year, the portfolio rose in absolute terms but, net of fees, underperformed its benchmark, the Russell 1000 Value Index, which was up 2.8%. Security selection detracted from relative performance, while sector selection contributed. Security selection within financials and industrials detracted, offsetting contributions from security selection within technology and an underweight to the energy.
Leading contributors to full-year relative returns included Alexion, after global pharmaceutical company, AstraZeneca, announced plans to acquire the rare disease drugmaker. Roche contributed as the market rewarded large-cap pharmaceutical companies as the coronavirus crisis persisted. Importantly, Roche has one of the highest returns on capital in the industry with a robust pipeline, free-cash-flow yield, and an attractive dividend yield. Walmart contributed as the discount retailer maintained sales momentum during the pandemic, continuing to serve customers both physically and digitally, with effective margin management.
Wells Fargo detracted from full-year relative returns due to investor uncertainty after the U.S. Federal Reserve (the Fed) committed to keeping interest rates low through 2022, introducing further doubt for the bank’s already precarious growth prospects. Midyear, Wells Fargo failed the Fed’s bank stress tests and, as a result, had to cut its dividend. Raytheon Technologies detracted as investors became worried about lower defense spending and aerospace weakness early in the year due to COVID-19. Toward the end of the year, vaccine news helped spur optimism that commercial air travel may begin to improve over the medium term. Phillips 66 detracted, due to a sharp decline in oil as prices and demand fell dramatically during the beginning stages of the pandemic. Weakness was further exacerbated by a Saudi-Russia oil price war during the first-quarter of the year.
Value has experienced historic underperformance versus growth this year, as COVID-19 has pressured many non-technology business models and investors have rewarded many work-from-home growth beneficiaries. This year’s challenges are providing an excellent opportunity to assess both business models and corporate cultures. We’re comforted by the fact that the portfolio continues to exhibit strong underlying fundamental integrity, while trading at attractive valuations versus the market. We remain optimistic about the recent broadening of the market and believe that vaccine deployment and extreme monetary and fiscal stimulus support a GDP recovery and possibly reflation in 2021. We seek to own attractively valued companies that are good businesses exhibiting signs of improving success. The portfolio’s holdings have attractive fundamentals that are consistent with our philosophy—high free-cash-flow yields, low earnings variability and low leverage. These well-managed companies deploy capital wisely, allowing them to grow dividends and enhance the long-term value of their shares.
Penn Mutual Asset Management, LLC
Investment Adviser
AllianceBernstein
Investment Sub-Adviser
 
14


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Large Cap Value Fund on December 31, 2010 would have grown to $22,903. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 1000 Value Index, during the same period. A $10,000 investment in the Russell 1000 Value Index on December 31, 2010 would have grown to $27,148.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Large Cap Value Fund 2.32%   8.33%   8.64%
Russell 1000 Value Index 2.80%   9.74%   10.50%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Financial 21.7 %
Consumer, Non-cyclical 19.2 %
Industrial 17.0%
Consumer, Cyclical 15.8 %
Communications 12.1 %
Technology 8.7 %
Energy 3.7 %
Basic Materials 1.8 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
15


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Large Core Value Fund
The Penn Series Large Core Value Fund returned 2.66% for the twelve-month period ending December 31, 2020, compared to the 2.80% return for its benchmark, the Russell 1000 Value Index for the same time period.
Following a relatively benign start to the year, the capital markets were upended in March with the emergence of a global pandemic as COVID-driven market volatility forced price declines across asset classes and market segments. As it became apparent that “social distancing” was one of the best ways to combat the virus, nations around the world ordered citizens to stay at home. Economic activity declined dramatically and weekly U.S. unemployment claims reached a record level of 6.6 million in the final full week of March.
Around the world, the U.S. Federal Reserve and other central banks rolled out stimulus programs to shore up their economies. The decline in asset classes quickly reversed across the capital markets with continued gains in both the second and third quarters of 2020. As October turned to November, Joe Biden’s decisive victory in the U.S. presidential election eased the political uncertainty in the market. That event, coupled with the announcement that two coronavirus vaccine candidates had proven more than 90% effective in late-stage trials, led investors to shift their focus from current mystery to the potential for a strong recovery in the second half of 2021.
Despite the multitude of challenges investors faced in 2020, most equity markets delivered double-digit gains over the period. The S&P 500 Index returned 18.40%, the Russell 2000 Index posted a 19.96% gain, while in international markets, the MSCI EAFE notched a more modest 7.82% return.
As has been the trend over the last several years, growth stocks continued their dominance over value stocks during the period. The Russell 1000 Growth Index outperformed the Russell 1000 Value Index by a whopping 35%, with the Indices delivering returns of 38.49% and 2.80% respectively.
The cumulative effect on relative performance for both security selection and sector allocation were roughly flat over the period. Eight of the 11 of the economic sectors within the Index registered positive returns, with materials, health care, and industrials delivering the strongest returns.
Stock selection results were additive across five of the 11 sectors, with the largest selection gains in financials, consumer discretionary, and real estate. The top relative contributor for the period was an overweight position in biopharmaceutical company Gilead Sciences. Within financials, the Fund’s position in insurance company Progressive and the avoidance of Wells Fargo, which underperformed the Index by a wide margin, contributed to relative performance. Within Consumer Discretionary, the Fund’s positions in Lowe’s and Tractor Supply aided relative performance. Elsewhere, the Fund’s position in Industrials company Parker-Hannifin and not owning AT& T benefited performance results.
Stock selection results were negative across six of the 11 sectors for the period, with the most challenged selection results within industrials and health care. The Fund’s three largest detractors over the period were positions in Industrials companies Hexcel, Boeing, and Huntington Ingalls Industries. Within health care, an overweight position in Johnson & Johnson and not owning Danaher hurt relative performance. Elsewhere, positions in Walmart, oilfield services company Schlumberger, and American International Group detracted.
Penn Mutual Asset Management, LLC
Investment Adviser
Eaton Vance Management
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Large Core Value Fund on December 31, 2010 would have grown to $24,898. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 1000 Value Index, during the same period. A $10,000 investment in the Russell 1000 Value Index on December 31, 2010 would have grown to $27,148.
 
16


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Large Core Value Fund 2.66%   9.43%   9.55%
Russell 1000 Value Index 2.80%   9.74%   10.50%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Financial 25.0%
Consumer, Non-cyclical 21.7 %
Industrial 13.9 %
Communications 11.4 %
Consumer, Cyclical 9.0%
Utilities 7.3 %
Technology 5.5 %
Energy 4.6 %
Basic Materials 1.6 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
17


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Index 500 Fund
The Penn Series Index 500 Fund returned 18.35% for the twelve-month period ending December 31, 2020, compared to the 18.40% return for its benchmark, the S&P 500 Index for the same time period.
The Fund and Index returns reflect the reinvestment of dividends and other income. The Fund’s performance reflects the expenses of managing the Fund, including brokerage and advisory expenses. The Index is unmanaged and Index returns do not reflect fees and expenses of any kind, which would have a negative impact on returns.
The economic landscape was justifiably dominated by the COVID-19 pandemic throughout most of the developed world during 2020. The U.S. fell hard to the virus from both health and economic perspectives. The S&P 500 did not start the year off strong (-19.6% in Q1) as the virus emerged and uncertainty followed. Companies began altering the ways that they operate amid ever-changing social distancing orders. The Index recouped its value in Q2 (+20.5%) as both consumers and businesses learned to adapt to the new terrain. Many Technology and Materials stocks actually benefitted from the various regional lockdowns and easily offset laggards such as Consumer Staples. For the overall calendar year, the Index gained 18.4% buoyed by the increased demand of technology, the U.S. Presidential election build up, federal stimulus legislation, and the hope for FDA approval of multiple COVID vaccines, which came to fruition as the year was coming to a close. The big non-COVID related event within the Index this past year was the long-anticipated addition of Tesla that finally occurred in mid-December. At the time of the official announcement, Tesla was ranked as the 12th largest U.S. company. The stock continued to ascend and finished the year a short time later with the fifth highest weight in the Index at just under 2%.
On an individual security level, the top positive contributors to the Fund’s performance during the reporting period were Apple Inc., Amazon.com, Inc., and Microsoft Corporation. The top negative contributors to the Fund’s performance during the reporting period were AT&T Inc., Wells Fargo & Company, and Exxon Mobil Corporation.
Penn Mutual Asset Management, LLC
Investment Adviser
State Street Global Advisors
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Index 500 Fund on December 31, 2020 would have grown to $35,545. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the S&P 500 Index, during the same period. A $10,000 investment in the S&P 500 Index on December 31, 2010 would have grown to $36,700.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Index 500 Fund 18.35%   14.89%   13.52%
S&P 500 Index 18.40%   15.22%   13.88%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
 
18


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Technology 23.2 %
Consumer, Non-cyclical 20.9 %
Communications 16.2 %
Financial 14.5 %
Consumer, Cyclical 9.7 %
Industrial 8.3 %
Utilities 2.8 %
Energy 2.3 %
Basic Materials 2.1 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
19


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Mid Cap Growth Fund
The Penn Series Mid Cap Growth Fund returned 49.48% for the twelve-month period ending December 31, 2020, compared to the 35.59% return for its benchmark, the Russell Midcap Growth Index for the same time period.
During the period, all sectors in the Index and Fund posted positive returns, except for energy, which suffered from global shelter-in-place mandates. Sector overweights and underweights were an overall detractor to the Fund’s relative performance; however, stock selection – the expected primary driver of returns for the strategy – more than made up for the negative performance.
The strongest sector contribution to relative outperformance came from information technology, followed by industrials, consumer discretionary, health care, financials, consumer staples and materials. We had no exposure to the real estate sector. Detractors to performance came from energy and communication services and utilities by way of no holdings in a very small allocation within the Index. Equity options detracted from performance by way of exposure throughout the calendar year to portfolio insurance in lieu of raising excess cash. While there was tremendous uncertainty throughout the period due to significant macroeconomic disruptions, the market largely shrugged off the uncertainty and thus, the portfolio insurance was not needed. Cash, as would be expected in a strong market environment, was also a drag on performance.
Information technology was the largest allocation and strongest relative contributor within the Fund for the measurement period. As the sector outperformed within the Index, our underweight position detracted to relative outperformance while our stock selection more than offset the underweight as the strongest returns to the Fund. The top three relative contributors to performance were Twilio, Inc., DocuSign, Inc. and Square, Inc.
Communication services was the largest relative detractor. We continue to gain exposure to this sector through two names, Twitter, Inc. and Electronic Arts, Inc., which is not held in the benchmark. While both posted solid positive absolute results and were relative contributors to performance, it was our lack of exposure to names like Roku, Spotify and Pinterest that created the drag on overall relative performance.
We witnessed a serious pandemic-wrought corporate profit recession in 2020, which was swiftly and steeply
discounted by gobsmacked investors. The recovery was also swift and even larger in magnitude, carried along by government stimulus, global interest rate maneuvering and a belief in the resilience of economies, particularly the domestic economy. While we believe world economies will recover and grow as vaccine distributions accelerate, we fear the underlying economic damage may be deeper than reflected in current equity levels. We wouldn’t be surprised to see the market pause while it digests the spectacular gains of the past six months, especially of companies that “over earned” during the pandemic. We believe inflation and interest rates could surprise to the upside as a result of persistent supply chain disruptions related to the lockdowns, as well as strong generational demand for housing in an under-inventoried market. Should this scenario occur, there is a risk the Federal Reserve could lag in its response, given its recent accommodative posture. While stock picking is always key to our process and performance, it will be paramount in this environment as we seek to manage valuation risk in the portfolio, while investing in durable growers, both secularly and cyclically.
Penn Mutual Asset Management, LLC
Investment Adviser
Ivy Investment Management
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Mid Cap Growth Fund on December 31, 2010 would have grown to $38,593. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell Midcap Growth Index, during the same period. A $10,000 investment in the Russell Midcap Growth Index on December 31, 2010 would have grown to $40,613.
 
20


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Mid Cap Growth Fund 49.48%   22.84%   14.46%
Russell Midcap Growth Index 35.59%   18.66%   15.04%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Consumer, Non-cyclical 30.5 %
Technology 26.0%
Consumer, Cyclical 16.6 %
Industrial 15.6 %
Communications 5.9 %
Financial 3.9 %
Basic Materials 1.5 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
21


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Mid Cap Value Fund
The Penn Series Mid Cap Value Fund returned (12.29%) for the twelve-month period ending December 31, 2020 to the 4.96% return for its benchmark, the Russell Midcap Value Index for the same time period.
Small and mid-cap stocks staged a big bounce off their bear market bottoms, but have significantly lagged larger capitalization and growth stocks. During April, the Fund outperformed the Russell Mid Cap Value Index, which was up 13% for the month. Despite outperforming in April, the Fund lagged the index for the first four months of 2020.
The shelter in place rules were successful, at least temporarily, in reducing the spread of COVID-19. However, economic activity was severely impacted, with GDP and employment falling at a record pace, quickly inducing a severe global recession. Stock prices reacted adversely to the downside. In unprecedented fashion, monetary authorities and governments around the world were quick to flood the markets with record amounts of liquidity. This policy response, coupled with extraordinary medical efforts leading to positive advances in treating COVID-19 and developing a vaccine against it, led investors to quickly bid up stocks ending the bear market.
The commentary provided above was from the former sub-adviser of the Fund, Neuberger Berman Investment Advisers LLC, who was the manager of the Fund until April 30, 2020.
Equities ended 2020 with strong positive performance despite heightened volatility. In the first quarter, stocks declined sharply after the COVID-19 pandemic halted travel and disrupted supply chains. The Federal Reserve responded aggressively, cutting policy rates to zero, and Congress passed a $2 trillion economic stimulus package. Equities staged a dramatic comeback in the second quarter and continued to rally through year-end as lower-quality factors such as high-beta stocks and non-earners drove the Index. Growth outperformed value across all market-cap segments. During the fourth quarter, the magnitude of growth’s outperformance narrowed as cyclicals such as energy and financials led the market higher. The emergency approval of several COVID-19 vaccines also helped boost market performance, as it raised hopes for a return to normalcy in 2021.
The Portfolio delivered positive returns but underperformed its benchmark, the Russell Midcap Value Index, for the period spanning the Portfolio’s inception date of May 1, 2020, through December 31, 2020. Stock selection in technology, materials and communication services detracted from relative performance. Stock selection in consumer discretionary and underweight allocations to energy and utilities contributed to relative results.
Technology was the Portfolio’s biggest detractor on a relative basis due to stock selection, followed by real estate, where both selection and an overweight allocation dragged on results. Equity Commonwealth, a real estate investment trust specializing in commercial office properties, and Equity Lifestyle Properties, the leading operator of manufactured home communities, RV resorts and campgrounds, were the largest detractors at the individual stock level.
Owing to the Portfolio’s sector underweight, energy was the biggest contributor to relative results. Stock selection in consumer discretionary was a bright spot, with Levi Strauss & Co. outperforming as it continued to successfully sell products in the direct-to-consumer channel. The largest individual contributor to relative performance was Discover Financial Services, which benefited late in the period from positive sentiment that the COVID-19 vaccine will lead to a quick recovery and fewer credit losses.
2020 saw unprecedented stimulus by governments and central banks globally, and while the amount could slow meaningfully, it is our belief that stimulus will not go away. In the U.S., stimulus programs that showered the markets with liquidity allowed even consumers who were temporarily unemployed to have greater discretionary income than if they had been working. Undoubtedly, these coordinated efforts helped to boost the prices of risk assets around the world. Even though the U.S. will run a $3 trillion budget deficit this year, we believe the will to spend more at the fiscal level likely will continue, thus providing a further tailwind for markets.
At least for the coming year, we believe the value segment is well positioned. We remain convinced that over the long term, investing in companies with strong balance sheets, durable franchises and other quality attributes will again become important contributors to outperformance.
 
22


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
The commentary provided above is from the current sub-adviser of the Fund, Janus Capital Management, LLC, who assumed day-to-day management of the Fund on May 1, 2020.
Penn Mutual Asset Management, LLC
Investment Adviser
Janus Capital Management, LLC
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Mid Cap Value Fund on December 31, 2010 would have grown to $18,427. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell Midcap Value Index, during the same period. A $10,000 investment in the Russell Midcap Value Index on December 31, 2010 would have grown to $27,115.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Mid Cap Value Fund (12.29%)   3.69%   6.30%
Russell Midcap Value Index 4.96%   9.73%   10.49%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Financial 34.0%
Industrial 16.9 %
Consumer, Cyclical 11.7 %
Technology 11.1 %
Utilities 7.6 %
Consumer, Non-cyclical 7.1 %
Basic Materials 6.3 %
Communications 4.3 %
Energy 1.0%
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
 
23


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Mid Core Value Fund
The Penn Series Mid Core Value Fund returned 1.60% for the twelve-month period ending December 31, 2020, compared to the 4.96% return for its benchmark, the Russell Midcap Value Index for the same time period.
Broad U.S. equity markets ended the year higher despite volatility in the first quarter, when markets plunged dramatically on pandemic fears and heightened global economic uncertainty. Stocks rapidly entered bear market territory as coronavirus containment efforts disrupted economic activity and fueled massive unemployment. Stocks recovered ground in the second quarter after the Federal Reserve intervened with several aggressive stimulus measures and Congress passed a $2 trillion economic relief package. This market recovery extended through the second half of the year, supported by stronger-than-expected economic and earnings growth. The approval of several COVID-19 vaccines and the passage of additional fiscal stimulus measures supported robust fourth-quarter gains. Against this backdrop, large-cap stocks outperformed mid- and small-cap stocks. Growth stocks outperformed value.
The portfolio’s lack of exposure to the cyclical metals and mining and chemicals industries detracted from returns. Not owning outperforming stocks in the interactive media and services industry weighed on relative performance, as those stocks were strong performers during the pandemic. The portfolio continued its notable underweight in the real estate sector, which positively impacted performance. Stock selection in information technology also aided relative performance.
Lower interest rates and increased credit risk from worsening economic conditions in the first half of the year drove Comerica Bank to underperform. Lack of exposure to the gold mining stock Newmont, detracted from performance. Market speculation over lower U.S. interest rates, the dollar’s weakness and geopolitical tensions in the Middle East boosted the price of gold and gold mining stocks. Sodexo, a food service and facilities maintenance operator, weighed on returns as COVID-19 caused business interruptions for many of its corporate, leisure and higher education customers. We think Sodexo has an attractive valuation, flexible cost structure and financial strength.
Applied Materials, a semiconductor equipment company, benefited from strong trends in key end markets and demand for connectivity during the pandemic. Hologic, a medical device company, outperformed due to significant
sales for its COVID-19 test. The economics of the test are extremely favorable as Hologic is able to capture three times the revenue of its core diagnostics tests with better gross margins. Along with other utilities, Xcel Evergy, a Minnesota-based electric and gas company, held its value better during the first-quarter market decline. Xcel also outperformed many other utilities because it is a fully regulated, higher-quality utility with a low range of outcomes.
We do not rely on impending catalysts in our process. Investors wonder if there are impending catalysts that might bring about a long-awaited and lasting shift toward value stocks. We believe value catalysts are embedded in our security selection. Our process involves buying higher-quality companies trading at a discount to fair value. We believe our fundamental analysis leads us to companies that are undervalued for transitory reasons, and their shares will inherently revert at some point. Relying on catalysts can be precarious. When a catalyst becomes recognizable to the market, the corresponding securities may have already become less attractive on a relative risk/reward basis.
Positive long-term demographic trends support demand for companies in the health care sector. We prefer more stable companies such as pharmaceutical distributors and those offering discretionary products and services that are likely to rebound in a post-pandemic economy.
Companies in the consumer staples sector generally offer strong defensive characteristics. Furthermore, we believe many of our holdings have taken steps to improve operations and strengthen their balance sheets.
We believe the financials sector offers select higher-quality companies that fit our process. We prefer trust banks and other financials that risk minimal capital as part of their business model. Our exposure to banks focuses on those we think are more likely to manage credit successfully through the ups and downs of the business cycle.
The pandemic accelerated paradigm-shifting structural trends. For example, dedensification has reshaped the real estate market as millennials migrate from urban cores, boosted by low mortgage interest rates and the acceptance of work-from-home practices. Declining technology costs and growing environmental concerns have created opportunities for utilities to transition power generation from coal and natural gas to renewable sources such as solar and wind. In addition, we believe government entities will support renewables by enacting
 
24


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
policies intended to combat global warming. These and other significant themes may create investment opportunities while increasing the importance of fundamental analysis and security selection.
Penn Mutual Asset Management, LLC
Investment Adviser
American Century Investment Management
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Mid Core Value Fund on December 31, 2010 would have grown to $25,460. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell Midcap Value Index, during the same period. A $10,000 investment in the Russell Midcap Value Index on December 31, 2010 would have grown to $27,115.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Mid Core Value Fund 1.60%   9.27%   9.80%
Russell Midcap Value Index 4.96%   9.73%   10.49%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Financial 25.3 %
Consumer, Non-cyclical 21.5 %
Industrial 20.3 %
Consumer, Cyclical 12.5 %
Utilities 8.0%
Technology 5.1 %
Communications 3.8 %
Energy 2.2 %
Basic Materials 1.3 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
 
25


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
SMID Cap Growth Fund
The Penn Series SMID Cap Growth Fund returned 52.31% for the twelve-month period ending December 31, 2020, compared to the 40.47% return for its benchmark, the Russell 2500 Growth Index for the same time period.
In the 12-month period, stock selection in the information technology and health care sectors contributed to relative returns, while stock selection in the consumer staples and materials sector detracted from relative performance.
Internet company, Cloudfare was a top contributor to relative returns during the year. Cloudflare introduced a new work-from-home service in January, named Cloudflare for Teams, which proved to be well-timed as the coronavirus pandemic has intensified. Furthermore, Cloudflare's online security services are in high demand given increased bandwidth usage around the world. In addition to these shorter term catalysts, we continue to like the company’s long-term business prospects. DocuSign was also a top contributor to relative returns during the year. DocuSign, Inc. provides cloud-based electronic signature solutions. Its cloud based electronic signature platform helps companies and individuals securely collect information, automate data workflows and sign anything. The company has benefitted from the shift to online business in the beginning of the year as revenues and billings growth have both increased. It also closed a deal with SEAL AI, which will further operationalize the system of record and contract approach inside organizations. The stock price continued to appreciate as demand for electronic signatures increased with more people working remotely as a result of the COVID-19 pandemic. We continue to like DocuSign as they are a beneficiary from the remote work environment and we believe there may be a more permanent shift in the way people deal with documents.
Commercial company Welbilt, Inc. was a top detractor from relative returns during the period. Shares fell in the first quarter after the company withdrew full year guidance and the company’s COO announced his departure from the company. The company experienced additional headwinds given some plant shutdowns. We continue to monitor the pace of capital spending for additional fabrication as the business continues to focus on liquidity management. We remain positive on the company’s management team and expect performance to pick up as macro conditions normalize. Amarin Corporation Plc Sponsored ADR was also a top detractor
from relative returns during the year. Amarin Corp. Plc is a biopharmaceutical company, which focuses on the commercialization and development of therapeutics for cardiovascular health. Shares declined significantly in the first quarter after a district court judge invalidated the patents behind Amarin’s only drug, Vascepa. This was a surprising result that now allows generic drugs to enter in the U.S. The company still has a surplus of cash and could rebound if the patent is reacquired. Management continues to feel strongly about its ability to win the Vascepa patent litigation upon an appeal, and we will monitor developments closely.
The U.S. equity market rebounded from pandemic-induced lows in the first quarter of 2020, rounding out the year with multiple tailwinds from pent-up demand to significant cash reserves. As the market anticipates a recovery alongside the rollout of the vaccine, we remain vigilant in navigating through optimistic market sentiment given the potential for volatility. While we see a path to an uptick in global economic activity to support further market upside, we caution that the economy remains in the infancy of its recovery and uneven progress suggests that full macro normalization will remain dependent on the trajectory of COVID-19 recovery, successful global vaccine distribution, and ongoing fiscal and monetary policy. As the economic expansion widens, we expect the equity market rally to continue, but with broader sector participation. Within this recovery period, we believe that it is crucial to stay true to our quality-first investment approach. As always, we seek to invest in businesses with healthy balance sheets, relatively stable free cash flow generation, and differentiated business models aligned to secular advantages. We continue to test our models and re-evaluate our assumptions with increasing information, and stay focused on the long-term investment horizon.
Penn Mutual Asset Management, LLC
Investment Adviser
Goldman Sachs Asset Management
Investment Sub-Adviser
 
26


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the SMID Cap Growth Fund on December 31, 2010 would have grown to $41,871. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 2500 Growth Index, during the same period. A $10,000 investment in the Russell 2500 Growth Index on December 31, 2010 would have grown to $40,450.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
SMID Cap Growth Fund 52.31%   21.90%   15.40%
Russell 2500 Growth Index 40.47%   18.68%   15.00%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Consumer, Non-cyclical 32.9 %
Technology 24.9 %
Industrial 18.8 %
Consumer, Cyclical 14.6 %
Communications 4.2 %
Basic Materials 2.4 %
Energy 1.1 %
Financial 1.1 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
27


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
SMID Cap Value Fund
The Penn Series SMID Cap Value Fund returned 1.45% for the twelve-month period ending December 31, 2020, compared to the 4.88% return for its benchmark, the Russell 2500 Value Index for the same time period.
Global equities recorded positive returns for the 12-month period ended December 31, 2020, erasing losses from lows reached in late March when the COVID-19 pandemic triggered a sharp decline. Favorable news about the efficacy of coronavirus vaccination candidates helped offset market volatility prompted by an inability to control the spread of the virus in many countries, a potentially contested U.S. presidential election and lack of additional U.S. fiscal stimulus.
For the year, the portfolio rose in absolute terms but underperformed its benchmark, the Russell 2500 Value Index. Overall stock selection detracted for the period, primarily owing to holdings in the energy and materials and sectors, while selection in real estate contributed. Overweights to technology and consumer discretionary contributed, while an underweight the healthcare detracted.
HollyFrontier detracted as the petroleum refiner continued to deal with weak COVID-19-related end demand for fuel products and resulting low asset utilization. Carpenter Technology, a specialty alloy manufacturer, also detracted. Carpenter has underperformed amid soft earnings due to weakness in its key aerospace end market. Reinsurance Group of America detracted after the life reinsurer raised equity capital that was dilutive to its book value. Management indicated that the capital would be an additional buffer against higher mortality claims and credit losses that could potentially come from the current volatile climate.
Papa John’s International contributed as the pizza restaurant continued to show strong comparable-store sales growth. Papa John's, and the pizza market in general, is experiencing robust demand from consumers who face fewer restaurant options due to restaurant closures and state and local mandated occupancy limits and closures. Packaged-foods company Hain Celestial beat expectations throughout the year, as shares rebounded off March lows. Quanta Services contributed after the utility contractor reported a series of better-than-expected quarterly earnings and cash flow results.
Smaller-cap value stocks enjoyed a strong 4Q20. Looking forward, investors are asking themselves
whether this is the start of a new trend or just a short-term bounce. Over the past four years, value stocks have faced multiple headwinds. A fragile economy followed by a recession that led to investors paying ever higher multiples for growth stocks. Increasing skepticism by investors that value company profits would survive the twin shocks of a slower economy and technological disruption. The sum of heightened risk and historically low interest rates led to the valuation spread between growth and value stocks widening out to discounts of a magnitude not seen in 20 years. There are considerable reasons to believe that the tide is turning. The economy is showing signs of recovering from the sharpest and deepest recession in a generation. Value stock profit concerns appear overstated with profit growth in 2Q20 and 3Q20 being materially stronger than anticipated. With the election passed and progress on fighting the pandemic, there are reasons to believe 2021 will be a quieter, more normal year from a risk standpoint. Our bias is to increase exposures to value stocks but to be selective and careful in doing so. Risks are diminishing but have not yet passed. We want companies that, in our view, combine the business model strength to navigate the current volatile climate, the flexibility to adapt to lasting changes in consumer and business behavior, and cash flows and valuations that can drive performance as the climate improves. The sell-off in value has created a large pool of candidates. We have focused our research on identifying companies with these distinctive attributes.
Penn Mutual Asset Management, LLC
Investment Adviser
AllianceBernstein
Investment Sub-Adviser
 
28


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the SMID Cap Value Fund on December 31, 2010 would have grown to $22,914. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 2500 Value Index, during the same period. A $10,000 investment in the Russell 2500 Value Index on December 31, 2010 would have grown to $24,402.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
SMID Cap Value Fund 1.45%   7.85%   8.65%
Russell 2500 Value Index 4.88%   9.43%   9.33%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Financial 31.3 %
Industrial 21.5 %
Consumer, Cyclical 20.1 %
Technology 7.7 %
Consumer, Non-cyclical 7.5 %
Basic Materials 5.2 %
Energy 3.5 %
Utilities 2.1 %
Communications 1.1 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
29


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Small Cap Growth Fund
The Penn Series Small Cap Growth Fund returned 32.06% for the twelve-month period ending December 31, 2020, compared to the 34.63% return for its benchmark, the Russell 2000 Growth Index for the same time period.
U.S. small-cap stocks ended 2020 with strong positive performance despite heightened volatility. Stocks declined sharply in the first quarter after the COVID-19 pandemic halted travel and disrupted supply chains. Efforts to contain the pandemic also led to a sharp economic contraction. The Federal Reserve responded aggressively to this crisis by cutting policy rates to zero, and Congress passed a $2 trillion economic stimulus package. Stocks regained ground in the second quarter and extended this rally into the third and fourth quarters, aided by signs of resilient economic growth. The emergency approval of several COVID-19 vaccines also helped boost market performance in the fourth quarter, as it raised hopes for a return to normalcy in 2021.
For the 12 months ending December 31, 2020, the Portfolio delivered positive returns but underperformed its benchmark, the Russell 2000 Growth Index. Stock selection in health care and information technology detracted from relative performance. Stock selection in consumer discretionary and financials contributed to relative results.
The Portfolio’s relative performance throughout the period was hindered by our more cautious approach to a narrow group of high-growth, high-valuation stocks that have led the market over the past 12 months, and across different market conditions. Many of these companies were perceived to be immune to or beneficiaries of the COVID-19 crisis, often because of their virtual business models. Even so, this extended outperformance is unusual and has left many of these companies with lofty valuations that in our view are not justified by their long-term earnings potential. We are not willing to pay any price for growth, even when we like underlying business models, and we see heightened risk attached to these soaring valuations, especially in cases where companies are not yet profitable and where the path to profitability may be less clear. We remain committed to our disciplined approach, which is designed to provide long-term risk-adjusted returns and has proven successful in the past.
The Portfolio’s investment in amusement park company Cedar Fair detracted from relative performance.
Amusement parks depend on human proximity, and the coronavirus crisis forced the company to delay the opening of its parks while also reducing attendance even after gates were opened. Due to near-term uncertainty for its business, we exited the position.
Euronet Worldwide was another notable detractor for the Portfolio. Euronet owns the largest ATM network in Europe, a business that typically provides consistent revenue streams. But as the pandemic kept Europeans inside, ATM usage plummeted. Euronet’s ATMs tend to be focused around popular tourist destinations, and its business was also slower to recover as European travel remained depressed. On a positive note, Euronet's money transfer business proved more resilient than investors had expected, while its digital payments business has benefited from e-commerce growth.
QuantumScape Corp. was a top positive contributor. This newly public company is developing a next-generation, solid-state battery that will allow electric vehicles to charge faster and travel farther. While the battery may not reach the market for several years, the company is already receiving interest from vehicle manufacturers such as Volkswagen. The stock has benefited as investors have looked to capitalize on long-term growth potential in the electric vehicle market.
The Trade Desk, another contributor, provides a cloud-based platform that automates advertising placement across different mediums. The stock outperformed as the company’s business remained resilient despite the pandemic. Given its market leadership and existing relationships with ad agencies, we believe The Trade Desk is well positioned to benefit from this growth.
As we look ahead, we are optimistic that the distribution of multiple vaccines could set the stage for a return to normal. We also recognize it could take time for vaccines to be widely available, and for consumers and businesses to return to pre-pandemic behaviors. As a result, we believe we could see a continued push and pull for market leadership as investors await more clarity on the economic outlook. In this environment, we remain committed to a disciplined, fundamental investment approach. Our focus remains on companies with long-term drivers of earnings growth that we believe will play out over the next 10 years. These are companies with sustainable competitive advantages, strong market positions and pricing power that will allow them to adapt to the possibility of higher inflation as the economy recovers. We will also look for opportunities to capitalize
 
30


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
on innovation and longer-term trends that may have accelerated during this unprecedented period.
Penn Mutual Asset Management, LLC
Investment Adviser
Janus Capital Management, LLC
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Small Cap Growth Fund on December 31, 2010 would have grown to $30,671. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 2000 Growth Index, during the same period. A $10,000 investment in the Russell 2000 Growth Index on December 31, 2010 would have grown to $35,424.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Small Cap Growth Fund 32.06%   17.00%   11.86%
Russell 2000 Growth Index 34.63%   16.36%   13.48%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Consumer, Non-cyclical 35.1 %
Technology 21.6 %
Industrial 18.9 %
Financial 8.9 %
Communications 7.2 %
Consumer, Cyclical 5.2 %
Basic Materials 2.6 %
Utilities 0.5 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
 
31


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Small Cap Value Fund
The Penn Series Small Cap Value Fund returned 2.34% for the twelve-month period ending December 31, 2020, compared to the 4.63% return for its benchmark, the Russell 2000 Value Index for the same time period.
In 2020, the Fund underperformed the Russell 2000 Value Index. Stock selection in the financials and consumer discretionary sectors contributed to returns, while holdings in the health care and materials sectors detracted from performance.
Kinsale Capital Group, Inc., a property and casualty insurer, was a top contributor for the year. The company benefitted from improved operational efficiency in 2019 and early 2020, yielding strong earnings and premium growth despite 90% of its workforce working remotely. More earnings beats and a secondary share offering drove the stock higher in the latter half of the year. We believe Kinsale’s low cost, technology-enhanced underwriting model, combined with an improving pricing environment for its excess and surplus lines, will continue to support profitable growth over the long term. Saia, Inc., a less than truckload (LTL) logistics company, also contributed to relative returns in 2020. The stock struggled toward the beginning of the year, reporting softer than expected fourth quarter earnings and operating metrics for LTL shipments in the early months of 2020. However, better than expected quarterly earnings releases and improving shipping efficiency data for the remainder of the year contributed to the stock’s strong performance. We believe Saia is well positioned to benefit from the continued shift toward ecommerce and the digitization of consumption.
Redwood Trust, Inc., a mortgage Real Estate Investment Trust (REIT), was a top detractor from relative returns. Prior to the onset of the pandemic, we were overweight residential mortgage credit within the mortgage REIT universe given the health of the consumer and home prices. Over a few trading days in late March, investors fled to safety and sold out of companies holding non-government-backed securities. We sold out of this mortgage REIT position as we were wary of its ability to meet high volumes of margin calls.
The U.S. equity market rebounded from pandemic-induced lows in the first quarter of 2020, rounding out the year with multiple tailwinds from pent-up demand to significant cash reserves. As the market anticipates a recovery alongside the rollout of the vaccine, we remain vigilant in navigating through optimistic market
sentiment given the potential for volatility. While we see a path to an uptick in global economic activity to support further market upside, we caution that the economy remains in the infancy of its recovery and uneven progress suggests that full macro normalization will remain dependent on the trajectory of COVID-19 recovery, successful global vaccine distribution, and ongoing fiscal and monetary policy. As the economic expansion widens, we expect the equity market rally to continue, but with broader sector participation. Within this recovery period, we believe that it is crucial to stay true to our quality-first investment approach. As always, we seek to invest in businesses with healthy balance sheets, relatively stable free cash flow generation, and differentiated business models aligned to secular advantages. We continue to test our models and re-evaluate our assumptions with increasing information, and stay focused on the long-term investment horizon.
Penn Mutual Asset Management, LLC
Investment Adviser
Goldman Sachs Asset Management
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Small Cap Value Fund on December 31, 2010 would have grown to $25,040. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 2000 Value Index, during the same period. A $10,000 investment in the Russell 2000 Value Index on December 31, 2010 would have grown to $22,943.
 
32


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Small Cap Value Fund 2.34%   8.71%   9.61%
Russell 2000 Value Index 4.63%   9.65%   8.66%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Financial 36.6 %
Consumer, Cyclical 16.6 %
Industrial 16.2 %
Consumer, Non-cyclical 12.0%
Basic Materials 5.2 %
Technology 4.6 %
Utilities 3.9 %
Energy 2.9 %
Communications 2.0%
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
33


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Small Cap Index Fund
The Penn Series Small Cap Index Fund returned 19.35% for the twelve-month period ending December 31, 2020, compared to the 19.96% return for its benchmark, the Russell 2000 Index for the same time period.
The Fund and Index returns reflect the reinvestment of dividends and other income. The Fund’s performance reflects the expenses of managing the Fund, including brokerage and advisory expenses. The Index is unmanaged and Index returns do not reflect fees and expenses of any kind, which would have a negative impact on returns. The cumulative effect of small weighting differences between the securities and the currencies in the Fund and the Index contributed to the difference between the Portfolio’s performance and that of the Index.
The Fund had positive performance in 2020. The positive performance was driven mostly by fiscal and monetary policy and progress towards COVID-19 vaccines in response to the global pandemic, despite the negative impact from the onset of the pandemic at the beginning of the year. The first quarter of the reporting period started on a positive note due to the trade deal between the U.S. and China and earnings reports. Performance turned negative as the coronavirus spread across the globe and governments and economies implemented quarantines, travel bans and economic shutdowns. Performance in the second quarter of the reporting period rallied due to efforts to stem the spread of the virus as well as continued easing of monetary and fiscal policy. The positive performance continued in the third quarter of the reporting period as economies began to reopen amid progress in the fight against the pandemic. The Fund’s performance in the fourth quarter of the reporting period was positive as vaccines for COVID-19 began to roll out, strong macro data, further fiscal stimulus and increased M&A activity, in spite of the second wave of COVID-19 infections.
The Fund used Russell 2000 Index futures contracts in order to gain exposure to the Index during the reporting period. The Fund’s use of index futures helped the Fund track the Index.
On an individual security level, the top positive contributors to the Fund’s performance during the reporting period were Teladoc Health, Inc., MyoKardia, Inc., and Plug Power Inc. The top negative contributors to the Fund’s performance during the reporting period
were Blackstone Mortgage Trust, Inc. Class A, Invesco Mortgage Capital Inc., and NovoCure Ltd.
Penn Mutual Asset Management, LLC
Investment Adviser
State Street Global Advisors
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Small Cap Index Fund on December 31, 2010 would have grown to $27,166. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the Russell 2000 Index, during the same period. A $10,000 investment in the Russell 2000 Index on December 31, 2010 would have grown to $28,920.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Small Cap Index Fund 19.35%   12.52%   10.51%
Russell 2000 Index 19.96%   13.26%   11.20%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
 
34


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Consumer, Non-cyclical 26.3 %
Financial 21.5 %
Consumer, Cyclical 14.3 %
Industrial 13.3 %
Technology 10.6 %
Communications 4.4 %
Basic Materials 3.4 %
Energy 3.3 %
Utilities 2.9 %
Government 0.0% 2
Diversified 0.0% 2
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent broad industry sectors. Each industry sector consists of one or more specific industry classifications.
2 Less than 0.05%.
35


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Developed International Index Fund
The Penn Series Developed International Index Fund returned 7.78% for the twelve-month period ending December 31, 2020, compared to the 7.82% return for its benchmark, the MSCI EAFE Index for the same time period.
The Fund and Index returns reflect the reinvestment of dividends and other income. The Fund’s performance reflects the expenses of managing the Fund, including brokerage and advisory expenses. The Index is unmanaged and Index returns do not reflect fees and expenses of any kind, which would have a negative impact on returns. The cumulative effect of small weighting differences between the securities and the currencies in the Fund and the Index contributed to the difference between the Portfolio’s performance and that of the Index.
The Fund had positive performance in 2020. The Fund’s performance was driven by the reopening of the global economy, accommodative monetary policy, and progress on the battle against COVID-19 despite the onset of the global coronavirus pandemic. In the first calendar quarter of 2020, strong macro and earnings data was offset by the coronavirus outbreak and its worldwide spread resulting in travel bans, quarantines, lockdowns and shuttered economies. Performance in the second calendar quarter of the reporting period was positive on optimism that the spread of COVID-19 was slowing, ongoing monetary and fiscal policy intervention, the reopening of some economies and positive news regarding the development of vaccines for the virus. Positive performance continued in the third calendar quarter of the reporting period on optimism around progress on treatments and vaccines for COVID-19, declining new virus cases, and strong macro and earnings data. The Fund had positive performance in the fourth quarter of the reporting period on the back of the rollout of a number of vaccines for COVID-19, ongoing fiscal stimulus, and a post-Brexit deal between the UK and EU despite the beginning of a second wave of the pandemic.
The Fund used MSCI EAFE index futures contracts in order to gain exposure to the Index during the reporting period. The Fund’s use of index futures helped the Fund track the Index.
On an individual security level, the top positive contributors to the Fund’s performance during the reporting period were ASML Holding NV, LVMH Moet Hennessy Louis Vuitton SE, and SoftBank Group Corp. The top negative contributors to the Fund’s performance during the reporting period were HSBC Holdings Plc, Royal Dutch Shell Plc Class A, and BP p.l.c.
Penn Mutual Asset Management, LLC
Investment Adviser
State Street Global Advisors
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Developed International Index Fund on December 31, 2010 would have grown to $16,216. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the MSCI EAFE Index, during the same period. A $10,000 investment in the MSCI EAFE Index on December 31, 2010 would have grown to $17,096.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Developed International Index Fund 7.78%   6.97%   4.95%
MSCI EAFE Index 7.82%   7.45%   5.51%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
 
36


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Japan 25.4 %
United Kingdom 11.9 %
France 10.3 %
Switzerland 10.0%
Germany 9.2 %
Australia 7.8 %
Netherlands 5.3 %
Sweden 3.2 %
Hong Kong 3.1 %
Denmark 2.5 %
Spain 2.5 %
Italy 2.1 %
Finland 1.2 %
Singapore 1.1 %
Ireland 1.0%
Belgium 0.9 %
Israel 0.6 %
Norway 0.6 %
New Zealand 0.4 %
Luxembourg 0.3 %
Austria 0.2 %
Portugal 0.2 %
Macao 0.1 %
Isle of Man 0.1 %
Jordan 0.0% 2
Bermuda 0.0% 2
Mexico 0.0% 2
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent the countries in which the securities are denominated.
2 Less than 0.05%.
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Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
International Equity Fund
The Penn Series International Equity Fund returned 14.93% for the twelve-month period ending December 31, 2020, compared to the 10.65% return for its benchmark, the MSCI ACWI ex-U.S. Index for the same time period.
Stocks that helped absolute performance were Flutter Entertainment PLC and Adyen N.V. Flutter Entertainment PLC’s strong performance was predominantly driven by news of the December 3rd agreement to acquire the entire 37.2% interest in FanDuel held by Fastball. This enhanced Flutter’s exposure to the U.S. gambling market. We believe FanDuel’s strength and leadership continues to grow and become more apparent over time. Paddy Power Betfair announced a name change to Flutter Entertainment in March 2019 to reflect its portfolio of brands after shareholders overwhelmingly backed the name change. The company was formed in 2016 through the combination of two fast-growing online gaming and betting operators in the UK: Paddy Power and Betfair. The group runs a dual brand strategy targeting multiple audiences through various channels. With above 20% market share, we believe the company is well positioned to capitalize on the rapid change to online and mobile betting and gaming. Adyen N.V. was a beneficiary of accelerated e-commerce adoption post-COVID. Adyen is a differentiated payment acquirer that has leveraged its global, single-integrated platform to amass an attractive merchant portfolio that includes the world's fastest growing tech companies. The company has multiple growth drivers from expanding wallet share of existing clients and taking share from legacy players, and should be well positioned to sustain its profitable growth, solid returns, and strong balance sheet.
Stocks that hurt absolute performance were HDFC Bank Ltd and Anheuser-Busch INB NPV. HDFC Bank Ltd. came down in the broad market sell-off in India earlier this year. The market was also relieved that its CEO transition has progressed with no issues. HDFC Bank is one of the leading private sector banks in India and a core holding of ours. We feel HDFC Bank is a high-quality Indian private sector bank which has been a cornerstone investment in the portfolio for many years. The bank has delivered solid growth while maintaining high credit and underwriting standards. We believe HDFC Bank has a strong deposit franchise and powerful technology backbone that should allow it to grow at a slightly faster rate than the industry. Anheuser-Busch INB NPV (ABI)
was negatively affected by social distancing and weak currencies early in 2020. However, ABI's stock price rebounded on news of successful COVID vaccines later in the year. ABI is the world's largest brewer and dominates the beer market in most of the countries in which it operates. Globally, it has roughly one fourth of beer volumes and close to one half of global beer profits. We believe ABI is best in class on costs among consumer staples companies, not just brewers. Management has historically executed well on its acquisitions and generates high levels of free cash.
The fight to contain COVID-19 and its impact on the economy dominated market movements in the first quarter of 2020. As the quarter progressed, COVID-19 cases and resulting fatalities surged in EU countries. Emerging markets endured declines similar to developed markets as the virus spread around the globe. China, first into the crisis, imposed stringent lockdowns and activity indicators slumped as a result. India brought in lockdown measures at short notice in March to slow the spread of the virus, putting pressure on the already slowing economy. In Latin America, the Brazilian and Mexican administrations drew criticism for their relaxed response to the coronavirus crisis. In the second quarter of 2020 investors looked past the deepening economic crisis. While the pace varied, European countries began reopening in the second half of the quarter, as they sought to kick-start their economies before the summer season. Emerging market equities followed a similar path to developed markets, although EM countries showed a greater variation in policy response to the pandemic. The Chinese economy continued to reopen, while other emerging markets, such as India and Brazil, remained in the thick of the pandemic. International equity markets continued to advance in the third quarter as investors were encouraged by the global monetary and fiscal response to the pandemic, the reopening of some economies, and accelerated vaccine development. The relaxation of lockdown restrictions in Europe contributed to a spike in cases. As new COVID-19 cases in Europe soared into the thousands, China’s infection rate at the end of September remained lower, enabling the authorities to push ahead with reopening plans. Indian infection rates and fatalities rose sharply as the country wrestled to impose lockdown restrictions on large parts of its migrant worker population. Brazil also struggled with the practicality of fighting the virus, as well as the cost of minimizing its economic impact. Mexico, already in recession before the impact of COVID-19, bucked the stimulus trend by sticking to tough austerity measures, leading to expectations of a slower rebound.
 
38


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
International equities gained strongly in the fourth quarter as positive news on vaccine development pushed most markets to new highs. After a rocky month in October when rising COVID-19 infection rates prompted renewed restrictions across many countries, successful trials of Pfizer/BioNTech and Moderna vaccines in early November fueled strong returns. European markets advanced over the quarter, in part due to the vaccine rollout, strong performance in more cyclical sectors and forecasts for a strong corporate earnings recovery. However, as the quarter wore on, heightened concerns about a no-deal Brexit weighed on sentiment. The rise in COVID-19 cases across Europe forced many countries to clamp down on business activity during the quarter. Emerging market equities also advanced during the quarter. Joe Biden’s win in the U.S. presidential election helped push Chinese shares higher as investors bet on a less confrontational stance between the two countries, while the economy benefited from the containment of the virus. The recovery story extended to other major emerging markets as India’s economy performed better than expected in the three months through September.
After a year heavily impacted by the effects of COVID-19, there will be more uncertainty to come. Changes in interest rates and political disruption could shake markets and companies. But as we enter 2021, we remain steadfast in our bottom-up research in pursuit of stable, quality growth companies at reasonable prices. There is also uncertainty about the trajectory of the economic recovery from COVID. Therefore, we seek to own companies that are resilient to macroeconomic dislocations. It is our goal to generate attractive returns while taking less risk, safely delivering our clients to their investment destinations.
Penn Mutual Asset Management, LLC
Investment Adviser
Vontobel Asset Management
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the International Equity Fund on December 31, 2010 would have grown to $22,234. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the MSCI ACWI ex-U.S. Index, during the same period. A $10,000 investment in the MSCI ACWI ex-U.S. Index on December 31, 2010 would have grown to $16,163.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
International Equity Fund 14.93%   10.00%   8.32%
MSCI ACWI ex-U.S. Index 10.65%   8.93%   4.92%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
 
39


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
United Kingdom 19.2 %
France 10.2 %
Japan 10.1 %
Canada 10.0%
Ireland 7.9 %
Switzerland 7.3 %
India 7.1 %
United States 5.5 %
Netherlands 5.4 %
Germany 4.5 %
China 4.4 %
Luxembourg 3.3 %
Italy 2.8 %
Hong Kong 1.4 %
Spain 0.9 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent the countries in which the securities are denominated.
40


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Emerging Markets Equity Fund
The Penn Series Emerging Markets Equity Fund returned 10.43% for the twelve-month period ending December 31, 2020, compared to the 18.31% return for its benchmark, the MSCI Emerging Markets Index for the same time period.
In the extraordinary sell-off triggered by the COVID-19 crisis and oil price collapse, investors flooded back to those emerging markets countries, sectors and stocks that were already outperforming—and relatively expensive—before the pandemic broke out (North Asia, technology, semiconductors and mega-cap stocks). This resulted in extreme clustering at the country and industry level on relative performance and valuation metrics. The larger, more liquid countries with more mega-cap technology names—China, Korea and Taiwan—outperformed. In sharp contrast, the EM countries lacking as many large and liquid names, and where the pandemic had not yet spread as widely, underperformed.
Even before the volatility, the stocks in our portfolio were largely oriented toward resilient domestic demand in quality companies with low debt capable of delivering reasonable earnings. In the year-to-date period through April 30, 2020, our country allocation detracted from returns largely due to four country positions: our underweight to China and our overweights to Brazil, Indonesia and Russia.
From a stock perspective, the largest detractor was India, driven by financials, where the market appeared to price in a risk of financial contagion and investors turned very negative when the 21-day lockdown was announced. Our stock selection in and overweight allocations to Peru and South Africa also hampered performance. However, our thematic plays in Korea continued to contribute to returns.
The Fund sometimes uses derivative instruments to manage certain market or currency exposures. In this period, the use of currency forward contracts had a negative impact.
We believe the pandemic is rapidly accelerating a worldwide turn inward that has been underway since the Global Financial Crisis (GFC) of 2008. We had expected the world to deliver disappointing growth before the pandemic, and had focused the Fund on high quality companies in countries expected to be most resilient to what the Sub-Adviser has dubbed the four
Ds: deglobalization, declining productivity, debt growth and depopulation.
The coronavirus hit at a time when the world was already turning inward, largely in reaction to the GFC, with deglobalization manifesting in a broad slowdown in cross-border flows of goods, money and people. Global trade as a percentage of gross domestic product is expected to fall from 60% in 2008 to 53% after this year as more countries institute greater protectionist measures.
The trend toward localization—companies looking to produce more locally, and consumers looking to buy from local brands—was already getting underway and is likely to pick up speed. The world has also suffered from declining labor productivity as most countries had already reaped the competitive gains to be made by entering global markets when the 2008 crisis hit. Since then, slowing cross-border flows of people, goods and capital have halted or reversed those gains.
The commentary provided above was from the former sub-adviser of the Fund, Morgan Stanley Investment Management Inc., who was the manager of the Fund until April 30, 2020.
Taiwan Semiconductor helped absolute performance. It continues to see strong demand for chips as several end customers update their products with the latest generation chips. Taiwan Semiconductor Manufacturing Co. (TSMC) pioneered the dedicated foundry industry. A foundry is a facility dedicated solely to chip manufacturing - from PC semiconductors to memory chips to digital signal processors - as opposed to a fabless semiconductor company, which focuses on chip design and does no manufacturing. TSMC has more than a dozen facilities in which it can produce the equivalent of over 10 million 12-inch wafers. The company has consistently captured 100% of industry profits. This is mainly due to better execution of a highly complex manufacturing process. TSMC has been able to patent its manufacturing processes, limiting the ability of competitors to copy its success. Semiconductors have continued to proliferate well beyond the realm of PC to where most manufactured goods now contain some silicon. Volume growth has been in the 15% range and will likely continue on this path in the future. The cost of building a fabrication plant continues to increase as chip manufacturing scales down to smaller geometries. As a result of the rising capital intensity of the business, as well as the increasing execution risks associated with
 
41


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
manufacturing at the nanoscale level, barriers to entry continue to increase.
Another stock that helped absolute performance was SK Hynix Inc. We believe the recent rally in memory stocks is typically what happens after trough inflections. We feel tactical positioning and foreign money inflow, earnings revisions and Micron’s updated guidance contributed to the recent stock price rally of memory players. Pricing outlook for 2021 appears stronger moving into early December given improving order trends from server customers as well as DRAM spot price acceleration. Thus, we believe there is a consensus for the memory industry to enter an upturn cycle in 2021. SK Hynix is a pure-play memory semiconductor company, specializing in DRAM (the source of more than 70% of its sales) and NAND flash memory chips, which are the key components of computing devices (e.g., PCs, servers) as well as mobile devices (e.g., smartphones, media tablets).
Alibaba Group Holding Ltd hurt absolute performance. The stock underperformed as a result of concern surrounding the new guidelines that came out from the market regulator regarding anti-monopoly practices for online players. In addition, there was a specific announcement of an investigation into Alibaba by the competition authorities on anti-monopoly practices. The key issue that would affect Alibaba is the one pressuring merchants to go exclusive which has helped drive traffic to Tmall, particularly in the apparel segment, where Alibaba has some key exclusive arrangements. We think that most of these relationships are on commercial terms and that Alibaba provides additional marketing and traffic resources in return for that exclusivity. We also believe Alibaba has a significant advantage regarding reach, merchant advantage and targeting capabilities for merchants. We also think that any gross merchandise volume (GMV) that might shift to alternate platforms can be managed and that there are other material drivers that can offset this including improving monetization and lower losses in new businesses like Cloud and Logisitics. Alibaba is the leading e-commerce platform operator in China with a dominant market share in terms of GMV. It is multiples larger in GMV than the second biggest player in China, JD.com. Alibaba's key advantage versus competitors is that it has the largest number of vendors, which in turn attracts a massive pool of buyers. Other markets like Japan and the U.S. have shown that it is difficult to displace a player who has a significant supplier/merchant advantage. This allows buyers to have access to the widest base of vendors and available inventory at the most competitive prices in almost any
category. Further, by segmenting the market to lower-priced merchants (Taobao) and more established/ trustworthy merchants in Tmall, it can cater to a wider base of consumers. There is also the tailwind from e-commerce penetration in China still being in relatively early stages. Operating as a platform business, Alibaba has maintained a higher ROE than its global peers.
Another stock that hurt absolute performance was Beijing Sinnet Technology Co. We reallocated capital to better opportunities as a result of a change in the investment thesis. Beijing Sinnet Technology is one of the premier data center companies in China. We think the Chinese data center industry is poised for strong growth over an elongated period of time. Beijing Sinnet has choice locations in Beijing and Shanghai, which act as a strong barrier versus competitors. The firm is also financially disciplined with low leverage and chooses projects that have strong returns on capital.
Emerging market equities rebounded strongly in the second quarter of 2020, as investors watched for positive news on the COVID-19 pandemic and looked through deepening economic turmoil. Emerging markets equities followed a similar path to developed markets, although countries showed a greater variation in policy response to the pandemic. The Chinese government implemented stimulus equivalent to more than 6% of nominal GDP. The Chinese economy continued to reopen, while other emerging markets, such as India and Brazil, remained in the thick of the pandemic. India’s lockdown hit the poorest migrant workers hard and was impacted by difficulties with contact tracing and testing. Late in the second quarter, Latin America became the epicenter of the COVID-19 pandemic.
Brazil’s toll of infections and deaths became the world’s second highest, leading to protests against President Jair Bolsonaro who opposed lockdowns imposed by state governors. A similar spike in COVID cases hampered Mexico’s attempt to deal with reopening its economy as infection rates continued to climb. Emerging markets advanced in the third quarter of 2020 as investors were encouraged by the global monetary and fiscal response to the pandemic, the reopening of some economies, and accelerated vaccine development. First into lockdown, and first to begin loosening restrictions, China’s rebound accelerated. In contrast to China’s success in handling the virus, India’s infection rates and fatalities rose as it wrestled to impose lockdown restrictions on large parts of its migrant worker population. Latin America’s largest countries also struggled with the practicality of fighting the virus, as well as the cost of minimizing its economic
 
42


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
impact. Emergency cash handouts to Brazil’s poorest contributed to an improved outlook, but also fueled investor concerns that the government might abandon its spending cap. Mexico, already in recession before the impact of COVID-19, bucked the stimulus trend by sticking to tough austerity measures, leading to expectations of a slower rebound. News in November of successful vaccine trials helped fuel emerging markets sentiment. In addition, the success of many countries (particularly China and others across Asia-Pacific) in containing the virus as cases spiked elsewhere underpinned confidence in economic growth in 2021. Emerging market outflows at the start of the pandemic reversed later in the year. China’s economic recovery continued. Joe Biden’s win in the U.S. presidential election helped push Chinese shares higher as investors bet on a less confrontational stance between the two countries. The recovery story extended to other major emerging markets as India’s economy performed better than expected in the three months through September. In Latin America, Brazil’s “coronavoucher” payments to almost a third of the population fueled GDP growth, but led to criticism from the country’s central bank and raised expectations of a rise in interest rates. Mexico’s economy grew, helped by an increase in demand for Mexican exports and remittances from Mexican workers in the U.S.
The International Monetary Fund is forecasting that large emerging market economies will recover faster than developed economies in 2021. However, we continue to believe investors should focus more closely on companies than on the macro environment. After a year heavily impacted by COVID-19, there will be more uncertainty to come. Changes in interest rates and political disruption could shake markets and companies. But as we enter 2021, we remain steadfast in our bottom-up research in pursuit of stable, quality growth companies at reasonable prices. There is also uncertainty about the trajectory of the economic recovery from COVID-19. Therefore, we seek to own companies that are resilient to macroeconomic dislocations. It is our goal to generate attractive returns while taking less risk, safely delivering our clients to their investment destinations.
The commentary provided above is from the current sub-adviser of the Fund, Vontobel Asset Management, Inc,. who assumed day-to-day management of the Fund on May 1, 2020.
Penn Mutual Asset Management, LLC
Investment Adviser
Vontobel Asset Management, Inc.
Investment Sub-Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Emerging Markets Equity Fund on December 31, 2010 would have grown to $12,631. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the MSCI Emerging Markets Index, during the same period. A $10,000 investment in the MSCI Emerging Markets Index on December 31, 2010 would have grown to $14,282.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Emerging Markets Equity Fund 10.43%   9.10%   2.36%
MSCI Emerging Markets Index 18.31%   12.81%   3.63%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
 
43


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
China 29.0%
India 14.1 %
South Korea 11.3 %
Taiwan 10.1 %
Hong Kong 6.3 %
Brazil 4.9 %
Indonesia 4.8 %
Netherlands 3.9 %
Mexico 3.2 %
Thailand 2.7 %
South Africa 2.6 %
Singapore 2.0%
Belgium 1.6 %
Malaysia 1.5 %
United Kingdom 1.5 %
Vietnam 0.5 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments. The categories shown represent the countries in which the securities are denominated.
44


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Real Estate Securities Fund
The Penn Series Real Estate Securities Fund returned (3.23%) for the twelve-month period ending December 31, 2020, compared to the (5.12%) return for its benchmark, the FTSE NAREIT All Equity REIT Index for the same time period.
U.S. real estate securities experienced their worst drawdown in more than a decade early in the year as the spread of COVID-19 led to widespread economic and social shutdowns. REITs recovered beginning in late March, with markets responding positively to massive and unprecedented fiscal and monetary relief and stimulus policies and as economies started to reopen. Investors were also generally heartened by news of advancements in therapeutics and vaccine development. The listed real estate market was further supported by mostly intact earnings and dividends, and encouraging rent collection data for most sectors. By year’s end, REITs as a whole had regained most of their early losses.
Returns in the year varied greatly by property type. Some areas of real estate saw increasing demand, benefiting from remote working and the acceleration of e-commerce. The growth of online shopping, video streaming and data networking drove demand for data centers, while cell towers worked with wireless carriers to roll out 5G networks. Industrial warehouses, which are at the center of online commerce (enabling fulfillment of home delivery), enjoyed strong demand. And an urban exodus that hurt apartments was positive for single-family rentals and self-storage REITs. The timber sector was another top performer, as homebuilding fundamentals improved and lumber prices rose. Health care REITs outperformed after declining materially earlier in the year, with skilled nursing benefiting from strong government financial support, medical offices aided by steady rental collections and a return to elective surgeries, and life sciences having no material negative impact from the virus.
Regional malls and shopping centers were severely impacted by a weakening economy and a threat to rental payments as malls and numerous stores temporarily closed around the country. These sectors were already contending with the secular trends of growing competition from e-commerce and tenants rationalizing their store counts. Hotels experienced sizable declines on economic uncertainty, compounded by a severe pullback in demand due to virus fears. The apartment sector underperformed on concerns about decelerating rents in key markets amid a migration of tenants from city
centers to suburbs. Offices underperformed (despite rents remaining strong), as many tenants showed success in transitioning from physical offices to work from home, which led to questions about the long-term future of office demand.
The portfolio had a negative total return for the year but outperformed its benchmark. Factors contributing to the portfolio’s relative performance included the timing of our allocations and security selection in the health care sector. An overweight and stock selection in data centers were also beneficial. Relative returns were additionally aided by an overweight allocation to the self-storage sector.
An underweight allocation in timber detracted from relative performance, as we viewed the sector’s valuations as being unattractive early in the year. An overweight in hotels also detracted, although this was partially offset by favorable security selection in the sector, including out-of-index positions in certain gaming companies that rose materially as markets reopened. Security selection in offices further hindered performance, although a favorable underweight in the sector partially offset this.
We believe REITs are well positioned for the year ahead. Just as COVID upended REITs in 2020, we think they could be a prime beneficiary of a widely available vaccine and continued economic expansion. Low interest rates, increasing fiscal spending and more aggressive vaccine distribution plans could help to accelerate the recovery. Today, valuations relative to the broad market and fixed income are at historic lows. In addition, we believe REITs’ attractive and growing dividends are likely to appeal to investors in an environment of very low interest rates.
Penn Mutual Asset Management, LLC
Investment Adviser
Cohen & Steers Capital Management
Investment Sub-Adviser
 
45


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Real Estate Securities Fund on December 31, 2010 would have grown to $24,417. For the purpose of comparison, the graph also shows the change in the Fund’s benchmark, the FTSE NAREIT All Equity REIT Index, during the same period. A $10,000 investment in the FTSE NAREIT All Equity REIT Index on December 31, 2010 would have grown to $24,269.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Real Estate Securities Fund (3.23%)   6.83%   9.34%
FTSE NAREIT All Equity REIT Index (5.12%)   6.70%   9.27%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Portfolio Composition as of 12/31/20
  Percent of
Total Investments1
Diversified 27.1 %
Healthcare 12.9 %
Industrial 10.3 %
Storage & Warehousing 9.7 %
Apartments 9.6 %
Regional Malls 5.4 %
Hotels & Resorts 5.3 %
Telecommunications 4.5 %
Office Property 4.2 %
Building & Real Estate 3.9 %
Manufactured Homes 2.2 %
Real Estate 1.6 %
Entertainment 1.5 %
Lodging 1.0%
Strip Centers 0.8 %
  100.0%

1 Portfolio holdings are presented as a percentage of total investments before short-term investments.
 
46


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Aggressive Allocation Fund
The Penn Series Aggressive Allocation Fund returned 9.25% for the twelve-month period ending December 31, 2020, compared to its benchmarks, the Russell 3000 Index’s return of 20.89% and the Bloomberg Barclays U.S. Aggregate Bond Index’s return of 7.51% for the same time period.
The Aggressive Allocation Fund is comprised of a target allocation of 90% equity funds and 10% fixed income funds. The equity allocation of the Fund is comprised of domestic equity funds ranging from large capitalization funds to small capitalization funds as well as developed international and emerging markets equity funds and the fixed income portion is primarily allocated to intermediate-term and short-term bond funds.
The asset allocation of the Aggressive Allocation Fund contributed negatively to its performance. During the period, the Fund’s allocation to value stocks, REITs, emerging markets and international equities underperformed the Russell 3000 Index. The allocation in growth stocks generated positive asset allocation performance. On the fixed income side, allocation to high yield bonds and short-term bonds contributed negatively to performance.
Fund selection of the Aggressive Allocation Fund contributed negatively to its performance. During the period, our managers for the Penn Series Mid Cap Growth, SMID Cap Growth, Flexibly Managed and International Equity Funds outperformed their respective benchmark by more than 2%, while the Penn Series Large Cap Growth, Mid Cap Value, Mid Core Value, SMID Cap Value, Small Cap Growth, Small Cap Value and Emerging Markets Equity Funds underperformed their respective benchmarks by more than 2%. On the fixed income side, all Funds outperformed their respective benchmarks.
In 2020, the COVID-19 pandemic had a profound impact on financial markets. The global economy dipped into a severe contraction due to the shutdown measures that were implemented to contain the spread of the virus. Equity markets sharply sold off in 1Q20 and subsequently recovered. In response, the Federal Reserve cut interest rates to zero and expanded the bond purchase program (quantitative easing). The U.S. government also provided fiscal stimulus packages to provide relief to individuals, families and businesses impacted by the economic slowdown due to the pandemic.
During the period, we reduced our mid cap value exposure due to its underperformance. We also moved allocation from value stocks to large cap index stocks to reduce both expense and exposure to companies vulnerable to the weak economy.
Looking ahead, U.S. economic growth is projected to be strong in 2021 predicated upon large government fiscal stimulus and successful vaccine distribution. Going forward, we will continually review the Fund to help ensure that it remains consistent with its investment objective by making adjustments, when necessary.
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Aggressive Allocation Fund on December 31, 2010 would have grown to $22,512. For the purpose of comparison, the graph also shows the change in the Fund’s benchmarks, the Russell 3000 Index and the Bloomberg Barclays U.S. Aggregate Bond Index, during the same period. A $10,000 investment in the Russell 3000 Index on December 31, 2010 would have grown to $36,407. A $10,000 investment in the Bloomberg Barclays U.S. Aggregate Bond Index on December 31, 2010 would have grown to $14,576.
 
47


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Aggressive Allocation Fund 9.25%   9.47%   8.45%
Russell 3000 Index 20.89%   15.43%   13.79%
Bloomberg Barclays U.S. Aggregate Bond Index 7.51%   4.44%   3.84%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Asset Allocation Target as of 12/31/20  
International Stocks 24.0%
Large Cap Value Stocks 23.0%
Large Cap Growth Stocks 12.0%
Mid Cap Value Stocks 10.0%
Emerging Markets Stocks 9.0%
Short Term Bonds 6.0%
Small Cap Growth Stocks 4.0%
Domestic REITs 3.0%
Mid Cap Growth Stocks 3.0%
High Yield Bonds 3.0%
Small Cap Value Stocks 2.0%
Intermediate Bonds 1.0%
  100.0%
48


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Moderately Aggressive Allocation Fund
The Penn Series Moderately Aggressive Allocation Fund returned 9.43% for the twelve-month period ending December 31, 2020, compared to its benchmarks, the Russell 3000 Index’s return of 20.89% and the Bloomberg Barclays U.S. Aggregate Bond Index’s return of 7.51% for the same time period.
The Moderately Aggressive Allocation Fund is comprised of a target allocation of 80% equity funds and 20% fixed income funds. The equity allocation of the Fund is comprised of domestic equity funds ranging from large capitalization funds to small capitalization funds as well as developed international and emerging markets equity funds and the fixed income portion is primarily allocated to intermediate-term and short-term bond funds.
The asset allocation of the Moderately Aggressive Allocation Fund contributed negatively to its performance. During the period, the Fund’s allocation to value stocks, REITs, emerging markets and international equities underperformed the Russell 3000 Index. The allocation in growth stocks generated positive asset allocation performance. On the fixed income side, allocation to high yield bonds and short-term bonds contributed negatively to performance.
Fund selection of the Moderately Aggressive Allocation Fund contributed negatively to its performance. During the period, our managers for the Penn Series Mid Cap Growth, SMID Cap Growth, Flexibly Managed and International Equity Funds outperformed their respective benchmark by more than 2%, while the Penn Series Large Cap Growth, Mid Cap Value, Mid Core Value, SMID Cap Value, Small Cap Growth, Small Cap Value and Emerging Markets Equity Funds underperformed their respective benchmarks by more than 2%. On the fixed income side, all Funds outperformed their respective benchmarks.
In 2020, the COVID-19 pandemic had a profound impact on the financial markets. The global economy dipped into a severe contraction due to the shutdown measures that were implemented to contain the virus. Equity markets sharply sold off in 1Q20 and subsequently recovered. In response, the Federal Reserve cut interest rates to zero and expanded the bond purchase program (quantitative easing). The U.S. government also provided fiscal stimulus packages to provide relief to individuals,
families and businesses impacted by the economic slowdown due to the pandemic.
During the period, we reduced our mid cap value exposure due to its underperformance. We also moved allocation from value stocks to large cap index stocks to reduce both expense and exposure to companies vulnerable to the weak economy.
Looking ahead, U.S. economic growth is projected to be strong in 2021 predicated upon large government fiscal stimulus and successful vaccine distribution. Going forward, we will continually review the Fund to help ensure that it remains consistent with its investment objective by making adjustments, when necessary.
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Moderately Aggressive Allocation Fund on December 31, 2010 would have grown to $21,689. For the purpose of comparison, the graph also shows the change in the Fund’s benchmarks, the Russell 3000 Index and the Bloomberg Barclays U.S. Aggregate Bond Index, during the same period. A $10,000 investment in the Russell 3000 Index on December 31, 2010 would have grown to $36,407. A $10,000 investment in the Bloomberg Barclays U.S. Aggregate Bond Index on December 31, 2010 would have grown to $14,576.
 
49


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Moderately Aggressive Allocation Fund 9.43%   9.19%   8.05%
Russell 3000 Index 20.89%   15.43%   13.79%
Bloomberg Barclays U.S. Aggregate Bond Index 7.51%   4.44%   3.84%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Asset Allocation Target as of 12/31/20  
Large Cap Value Stocks 23.0%
International Stocks 19.0%
Large Cap Growth Stocks 12.0%
Short Term Bonds 10.0%
Mid Cap Value Stocks 8.0%
Intermediate Bonds 7.0%
Emerging Markets Stocks 6.0%
Small Cap Value Stocks 3.0%
Small Cap Growth Stocks 3.0%
Domestic REITs 3.0%
Mid Cap Growth Stocks 3.0%
High Yield Bonds 3.0%
  100.0%
50


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Moderate Allocation Fund
The Penn Series Moderate Allocation Fund returned 9.77% for the twelve-month period ending December 31, 2020, compared to its benchmarks, the Russell 3000 Index’s return of 20.89% and the Bloomberg Barclays U.S. Aggregate Bond Index’s return of 7.51% for the same time period.
The Moderate Allocation Fund is comprised of a target allocation of 60% equity funds and 40% fixed income funds. The equity allocation of the Fund is comprised of domestic equity funds ranging from large capitalization funds to small capitalization funds as well as developed international and emerging markets equity funds and the fixed income portion is primarily allocated to intermediate-term and short-term bond funds.
The asset allocation of the Moderate Allocation Fund contributed negatively to its performance. During the period, the Fund’s allocation to value stocks, REITs, emerging markets and international equities underperformed the Russell 3000 Index. The allocation in growth stocks generated positive asset allocation performance. On the fixed income side, allocation to high yield bonds and short-term bonds contributed negatively to performance.
Fund selection of the Moderate Allocation Fund contributed negatively to its performance. During the period, our managers for the Penn Series Mid Cap Growth, SMID Cap Growth, Flexibly Managed and International Equity Funds outperformed their respective benchmark by more than 2%, while the Penn Series Large Cap Growth, Mid Core Value, SMID Cap Value, Small Cap Growth, Small Cap Value and Emerging Markets Equity Funds underperformed their respective benchmarks by more than 2%. On the fixed income side, all Funds outperformed their respective benchmarks.
In 2020, the COVID-19 pandemic had a profound impact on financial markets. The global economy dipped into a severe contraction due to the shutdown measures that were implemented to contain the spread of the virus. Equity markets sharply sold off in 1Q20 and subsequently recovered. In response, the Federal Reserve cut interest rates to zero and expanded the bond purchase program (quantitative easing). The U.S. government also provided fiscal stimulus packages to provide relief to individuals, families and businesses impacted by the economic slowdown due to the pandemic.
During the period, we reduced our mid cap value exposure due to its underperformance. We also moved allocation from value stocks to large cap index stocks to reduce both expense and exposure to companies vulnerable to the weak economy.
Looking ahead, U.S. economic growth is projected to be strong in 2021 predicated upon large government fiscal stimulus and successful vaccine distribution. Going forward, we will continually review the Fund to help ensure that it remains consistent with its investment objective by making adjustments, when necessary.
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Moderate Allocation Fund on December 31, 2010 would have grown to $20,000. For the purpose of comparison, the graph also shows the change in the Fund’s benchmarks, the Russell 3000 Index and the Bloomberg Barclays U.S. Aggregate Bond Index, during the same period. A $10,000 investment in the Russell 3000 Index on December 31, 2010 would have grown to $36,407. A $10,000 investment in the Bloomberg Barclays U.S. Aggregate Bond Index on December 31, 2010 would have grown to $14,576.
 
51


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Moderate Allocation Fund 9.77%   8.37%   7.18%
Russell 3000 Index 20.89%   15.43%   13.79%
Bloomberg Barclays U.S. Aggregate Bond Index 7.51%   4.44%   3.84%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Asset Allocation Target as of 12/31/20  
Intermediate Bonds 22.0%
Large Cap Value Stocks 17.0%
Short Term Bonds 14.0%
International Stocks 12.0%
Large Cap Growth Stocks 10.0%
Mid Cap Value Stocks 7.0%
Emerging Markets Stocks 5.0%
High Yield Bonds 4.0%
Mid Cap Growth Stocks 3.0%
Small Cap Value Stocks 2.0%
Small Cap Growth Stocks 2.0%
Domestic REITs 2.0%
  100.0%
52


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Moderately Conservative Allocation Fund
The Penn Series Moderately Conservative Allocation Fund returned 8.02% for the twelve-month period ending December 31, 2020, compared to its benchmarks, the Russell 3000 Index’s return of 20.89% and the Bloomberg Barclays U.S. Aggregate Bond Index’s return of 7.51% for the same time period.
The Moderately Conservative Allocation Fund is comprised of a target allocation of 40% equity funds and 60% fixed income funds. The equity allocation of the Fund is comprised of domestic equity funds ranging from large capitalization funds to small capitalization funds as well as developed international and emerging markets equity funds and the fixed income portion is primarily allocated to intermediate-term and short-term bond funds.
The asset allocation of the Moderately Conservative Allocation Fund contributed negatively to its performance. During the period, the Fund’s allocation to value stocks, REITs, emerging markets and international equities underperformed the Russell 3000 Index. The allocation in large cap growth stocks generated positive asset allocation performance. On the fixed income side, allocation to high yield bonds and short-term bonds contributed negatively to performance.
Fund selection of the Moderately Conservative Allocation Fund contributed negatively to its performance. During the period, our managers for the Penn Series Flexibly Managed and International Equity Funds outperformed their respective benchmark by more than 2%, while the Penn Series Large Cap Growth, Mid Core Value, SMID Cap Value, Small Cap Value and Emerging Markets Equity Funds underperformed their respective benchmarks by more than 2%. On the fixed income side, all Funds outperformed their respective benchmarks.
In 2020, the COVID-19 pandemic had a profound impact on financial markets. The global economy dipped into a severe contraction due to the shutdown measures that were implemented to contain the spread of the virus. Equity markets sharply sold off in 1Q20 and subsequently recovered. In response, the Federal Reserve cut interest rates to zero and expanded the bond purchase program (quantitative easing). The U.S. government also provided fiscal stimulus packages to provide relief to individuals, families and businesses impacted by the economic slowdown due to the pandemic.
During the period, we reduced our mid cap value exposure due to its underperformance. We also moved allocation from value stocks to large cap index stocks to reduce both expense and exposure to companies vulnerable to the weak economy.
Looking ahead, U.S. economic growth is projected to be strong in 2021 predicated upon large government fiscal stimulus and successful vaccine distribution. Going forward, we will continually review the Fund to help ensure that it remains consistent with its investment objective by making adjustments, when necessary.
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Moderately Conservative Allocation Fund on December 31, 2010 would have grown to $17,798. For the purpose of comparison, the graph also shows the change in the Fund’s benchmarks, the Russell 3000 Index and the Bloomberg Barclays U.S. Aggregate Bond Index, during the same period. A $10,000 investment in the Russell 3000 Index on December 31, 2010 would have grown to $36,407. A $10,000 investment in the Bloomberg Barclays U.S. Aggregate Bond Index on December 31, 2010 would have grown to $14,576.
 
53


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Moderately Conservative Allocation Fund 8.02%   6.90%   5.93%
Russell 3000 Index 20.89%   15.43%   13.79%
Bloomberg Barclays U.S. Aggregate Bond Index 7.51%   4.44%   3.84%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
Asset Allocation Target as of 12/31/20  
Intermediate Bonds 32.0%
Short Term Bonds 23.0%
Large Cap Value Stocks 15.0%
International Stocks 8.0%
Large Cap Growth Stocks 7.0%
High Yield Bonds 5.0%
Mid Cap Value Stocks 4.0%
Emerging Markets Stocks 2.0%
Small Cap Value Stocks 2.0%
Domestic REITs 2.0%
  100.0%
54


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Conservative Allocation Fund
The Penn Series Conservative Allocation Fund returned 7.03% for the twelve-month period ending December 31, 2020, compared to its benchmarks, the Russell 3000 Index’s return of 20.89% and the Bloomberg Barclays U.S. Aggregate Bond Index’s return of 7.51% for the same time period.
The Conservative Allocation Fund is comprised of a target allocation of 20% equity funds and 80% fixed income funds. The equity allocation of the Fund is comprised of domestic equity funds ranging from large capitalization funds to small capitalization funds as well as developed international and emerging markets equity funds and the fixed income portion is primarily allocated to intermediate-term and short-term bond funds.
The asset allocation of the Conservative Allocation Fund contributed negatively to its performance. During the period, the Fund’s allocation to value stocks, REITs and international equities underperformed the Russell 3000 Index. The allocation in large cap growth stocks generated positive asset allocation performance. On the fixed income side, allocation to high yield bonds and short-term bonds contributed negatively to performance.
Fund selection of the Conservative Allocation Fund contributed negatively to its performance. During the period, our managers for the Penn Series Flexibly Managed and International Equity Funds outperformed their respective benchmark by more than 2%, while the Penn Series Mid Core Value and SMID Cap Value Funds underperformed their respective benchmarks by more than 2%. On the fixed income side, all Funds outperformed their respective benchmarks.
In 2020, the COVID-19 pandemic had a profound impact on financial markets. The global economy dipped into a severe contraction due to the shutdown measures that were implemented to contain the spread of the virus. Equity markets sharply sold off in 1Q20 and subsequently recovered. In response, the Federal Reserve cut interest rates to zero and expanded the bond purchase program (quantitative easing). The U.S. government also provided fiscal stimulus packages to provide relief to individuals, families and businesses impacted by the economic slowdown due to the pandemic.
During the period, we reduced our mid cap value exposure due to its underperformance. We also moved allocation from value stocks to large cap index stocks to
reduce both expense and exposure to companies vulnerable to the weak economy.
Looking ahead, U.S. economic growth is projected to be strong in 2021 predicated upon large government fiscal stimulus and successful vaccine distribution. Going forward, we will continually review the Fund to help ensure that it remains consistent with its investment objective by making adjustments, when necessary.
Penn Mutual Asset Management, LLC
Investment Adviser
Cumulative Performance Comparison
December 31, 2010 — December 31, 2020
An investment of $10,000 in the Conservative Allocation Fund on December 31, 2010 would have grown to $15,500. For the purpose of comparison, the graph also shows the change in the Fund’s benchmarks, the Russell 3000 Index and the Bloomberg Barclays U.S. Aggregate Bond Index, during the same period. A $10,000 investment in the Russell 3000 Index on December 31, 2010 would have grown to $36,407. A $10,000 investment in the Bloomberg Barclays U.S. Aggregate Bond Index on December 31, 2010 would have grown to $14,576.
Average Annual Total Returns1 as of 12/31/20
  1 Year   5 Year   10 Year
Conservative Allocation Fund 7.03%   5.45%   4.48%
Russell 3000 Index 20.89%   15.43%   13.79%
Bloomberg Barclays U.S. Aggregate Bond Index 7.51%   4.44%   3.84%

1 The performance information shown here does not reflect variable account charges and fees. Past performance is not predictive of future performance. Shares may be worth more or less when redeemed than when purchased. Assumes reinvestment of all dividends.
    
 
55


Penn Series Funds, Inc.
Management’s Discussion of Fund Performance
Asset Allocation Target as of 12/31/20  
Intermediate Bonds 42.0%
Short Term Bonds 33.0%
Large Cap Value Stocks 10.0%
High Yield Bonds 5.0%
Large Cap Growth Stocks 4.0%
International Stocks 3.0%
Mid Cap Value Stocks 2.0%
Domestic REITs 1.0%
  100.0%
56


Important Information about Fund Expenses
Hypothetical Examples of a $1,000 Investment (Unaudited)
We believe that it is important for you to understand the effect of fees on your investment. All mutual funds have operating expenses. As a participant in any of the Penn Series Funds, you incur ongoing costs, which include costs for portfolio management, administrative services, and shareholder reports among others. Operating expenses, which are deducted from a fund’s gross income, directly reduce the investment return of the fund. A fund’s expenses are expressed as a percentage of its average net assets. This figure is known as the expense ratio.
The Penn Series Funds are the underlying investment vehicles for the variable life and variable annuity contracts issued by The Penn Mutual Life Insurance Company and its subsidiary, The Penn Insurance and Annuity Company. These contracts have transaction costs, additional administrative expense fees and mortality and expense risk charges. Because of these additional expenses, the costs to investors will be higher than the figures shown in the following expense examples. The expense examples below are intended to help you understand your ongoing costs (in dollars) of investing in each fund and to compare these costs with the ongoing costs of investing in other funds.
These examples are based on an investment of $1,000 invested for six months beginning July 1, 2020 and held through December 31, 2020. The examples illustrate your fund’s costs in two ways:
Actual Fund Performance in the table below provides information about actual account values and actual expenses. The “Ending Value” shown is derived from the fund’s actual return, and “Expenses Paid During Period” shows the dollar amount that would have been paid by an investor who started with $1,000 in the fund. You may use this information, together with the amount you invested, to estimate the expenses that you paid over the period. To do so, simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number given for your fund under the heading entitled “Expenses Paid During Period.”
Hypothetical 5% Annual Return is intended to help you compare your fund’s costs with those of other mutual funds. It assumes that the fund had a return of 5% before expenses during the period shown, but that the expense ratio is unchanged. In this case — because the return used is not the fund’s actual return — the results do not apply to your investment. The example is useful in making comparisons because the Securities and Exchange Commission requires all mutual funds to calculate expenses based on a 5% return. You can assess your fund’s cost by comparing this hypothetical example with the hypothetical examples that appear in shareholders reports of other funds. Because the return used is not an actual return, it may not be used to estimate the actual ending account value or expenses you paid for the period.
Please note that the expenses shown in the table are only meant to highlight and help you compare your ongoing costs of investing in the funds and do not reflect any fees and charges deducted under your insurance contract. The “Annualized Expense Ratio” represents the actual expenses for the six-month period indicated and will be different from the expense ratio in the Financial Highlights which is for the year ended December 31, 2020.
Disclosure of Fund Expenses
For the Period July 1, 2020 to December 31, 2020
Expense Table
  Beginning
Value
July 1,
2020
Ending
Value
December 31,
2020
Annualized
Expense
Ratio
Expenses
Paid During
Period*
Money Market Fund        
Actual $1,000.00 $1,000.06 0.10% $0.50
Hypothetical $1,000.00 $ 1,024.63 0.10% $0.51
Limited Maturity Bond Fund        
Actual $1,000.00 $ 1,018.33 0.70% $ 3.55
Hypothetical $1,000.00 $ 1,021.58 0.70% $ 3.56
57


Important Information about Fund Expenses
Hypothetical Examples of a $1,000 Investment (Unaudited)
  Beginning
Value
July 1,
2020
Ending
Value
December 31,
2020
Annualized
Expense
Ratio
Expenses
Paid During
Period*
Quality Bond Fund        
Actual $1,000.00 $ 1,026.62 0.66% $ 3.36
Hypothetical $1,000.00 $ 1,021.78 0.66% $ 3.36
High Yield Bond Fund        
Actual $1,000.00 $ 1,095.02 0.72% $ 3.79
Hypothetical $1,000.00 $ 1,021.47 0.72% $ 3.67
Flexibly Managed Fund        
Actual $1,000.00 $ 1,180.48 0.88% $ 4.82
Hypothetical $1,000.00 $ 1,020.66 0.88% $ 4.48
Balanced Fund        
Actual $1,000.00 $ 1,139.59 0.20% $ 1.08
Hypothetical $1,000.00 $ 1,024.12 0.20% $ 1.02
Large Growth Stock Fund        
Actual $1,000.00 $ 1,260.71 0.96% $ 5.46
Hypothetical $1,000.00 $ 1,020.25 0.96% $ 4.89
Large Cap Growth Fund        
Actual $1,000.00 $ 1,233.74 0.88% $ 4.94
Hypothetical $1,000.00 $ 1,020.66 0.88% $ 4.48
Large Core Growth Fund        
Actual $1,000.00 $ 1,330.78 0.85% $ 4.98
Hypothetical $1,000.00 $ 1,020.81 0.85% $ 4.33
Large Cap Value Fund        
Actual $1,000.00 $ 1,223.79 0.91% $ 5.09
Hypothetical $1,000.00 $ 1,020.51 0.91% $ 4.63
Large Core Value Fund        
Actual $1,000.00 $ 1,221.93 0.91% $ 5.08
Hypothetical $1,000.00 $ 1,020.51 0.91% $ 4.63
Index 500 Fund        
Actual $1,000.00 $ 1,220.64 0.35% $ 1.95
Hypothetical $1,000.00 $ 1,023.36 0.35% $ 1.78
Mid Cap Growth Fund        
Actual $1,000.00 $ 1,333.69 0.95% $ 5.57
Hypothetical $1,000.00 $ 1,020.30 0.95% $ 4.84
Mid Cap Value Fund        
Actual $1,000.00 $ 1,210.85 0.81% $ 4.50
Hypothetical $1,000.00 $ 1,021.02 0.81% $ 4.12
Mid Core Value Fund        
Actual $1,000.00 $ 1,214.30 1.05% $ 5.84
Hypothetical $1,000.00 $ 1,019.79 1.05% $ 5.35
SMID Cap Growth Fund        
Actual $1,000.00 $ 1,365.49 1.05% $ 6.24
Hypothetical $1,000.00 $ 1,019.79 1.05% $ 5.35
SMID Cap Value Fund        
Actual $1,000.00 $ 1,347.36 1.19% $ 7.02
Hypothetical $1,000.00 $ 1,019.08 1.19% $ 6.06
58


Important Information about Fund Expenses
Hypothetical Examples of a $1,000 Investment (Unaudited)
  Beginning
Value
July 1,
2020
Ending
Value
December 31,
2020
Annualized
Expense
Ratio
Expenses
Paid During
Period*
Small Cap Growth Fund        
Actual $1,000.00 $ 1,385.35 1.00% $ 6.00
Hypothetical $1,000.00 $ 1,020.05 1.00% $ 5.09
Small Cap Value Fund        
Actual $1,000.00 $ 1,352.14 1.02% $ 6.03
Hypothetical $1,000.00 $ 1,019.95 1.02% $ 5.19
Small Cap Index Fund        
Actual $1,000.00 $ 1,374.43 0.74% $ 4.42
Hypothetical $1,000.00 $ 1,021.37 0.74% $ 3.77
Developed International Index Fund        
Actual $1,000.00 $ 1,208.49 0.89% $ 4.94
Hypothetical $1,000.00 $ 1,020.61 0.89% $ 4.53
International Equity Fund        
Actual $1,000.00 $ 1,211.41 1.04% $ 5.78
Hypothetical $1,000.00 $ 1,019.85 1.04% $ 5.29
Emerging Markets Equity Fund        
Actual $1,000.00 $ 1,274.98 1.27% $ 7.26
Hypothetical $1,000.00 $ 1,018.68 1.27% $ 6.46
Real Estate Securities Fund        
Actual $1,000.00 $ 1,113.13 0.96% $ 5.10
Hypothetical $1,000.00 $ 1,020.25 0.96% $ 4.89
Aggressive Allocation Fund        
Actual $1,000.00 $ 1,213.17 0.32% $ 1.78
Hypothetical $1,000.00 $ 1,023.51 0.32% $ 1.63
Moderately Aggressive Allocation Fund        
Actual $1,000.00 $ 1,190.92 0.29% $ 1.60
Hypothetical $1,000.00 $ 1,023.66 0.29% $ 1.48
Moderate Allocation Fund        
Actual $1,000.00 $ 1,150.66 0.30% $ 1.62
Hypothetical $1,000.00 $ 1,023.61 0.30% $ 1.53
Moderately Conservative Allocation Fund        
Actual $1,000.00 $ 1,103.43 0.31% $ 1.64
Hypothetical $1,000.00 $ 1,023.56 0.31% $ 1.58
Conservative Allocation Fund        
Actual $1,000.00 $ 1,062.07 0.33% $ 1.71
Hypothetical $1,000.00 $ 1,023.46 0.33% $ 1.68

* Expenses are equal to the Fund’s annualized expense ratio multiplied by the average value over the period, multiplied by the number of days in the most recent fiscal half-year (184), then divided by 366.
59


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Money Market Fund
  Par
(000)
Value†
AGENCY OBLIGATION — 67.7%
Federal Farm Credit Banks    
2.070%, 01/04/21 $ 5,000 $ 5,000,797
0.070%, 01/12/21 5,000 4,999,893
0.080%, 01/14/21 5,001 5,000,856
0.120%, 03/26/21 5,000 4,998,600
0.120%, 03/29/21 10,000 9,997,100
Federal Home Loan Banks    
(3 M ICE LIBOR + (0.170%)), 0.060%, 01/08/21• 10,000 9,999,971
0.080%, 01/13/21 5,000 4,999,867
0.065%, 01/20/21 5,134 5,133,824
0.090%, 01/27/21 2,000 1,999,870
0.071%, 02/05/21 10,000 9,999,310
0.030%, 03/02/21 8,000 7,999,600
Federal Home Loan Mortgage Corp.    
2.375%, 02/16/21 1,500 1,504,273
0.091%, 05/10/21 10,000 10,000,000
1.550%, 05/27/21 3,000 3,017,393
Federal National Mortgage Association    
0.075%, 01/27/21 10,000 9,999,458
1.375%, 02/26/21 8,974 8,991,357
0.070%, 05/13/21 5,000 4,998,717
TOTAL AGENCY OBLIGATION
(Cost $108,640,886)
  108,640,886
U.S. TREASURY OBLIGATIONS — 25.5%
U.S. Treasury Bills    
0.103%, 01/07/21 6,000 5,999,897
0.076%, 01/14/21 10,000 9,999,726
0.085%, 01/19/21 5,000 4,999,787
0.070%, 01/21/21 10,000 9,999,611
0.071%, 02/02/21 10,000 9,999,373
TOTAL U.S. TREASURY OBLIGATIONS
(Cost $40,998,394)
40,998,394
  Number of
Shares
 
SHORT-TERM INVESTMENTS — 6.7%
Goldman Sachs Financial Square Funds - Government Fund Institutional Shares (seven-day effective yield 0.020%)
(Cost $10,713,151)
10,713,151 10,713,151
TOTAL INVESTMENTS — 99.9%
(Cost $160,352,431)
  $ 160,352,431
Other Assets & Liabilities — 0.1% 114,735
TOTAL NET ASSETS — 100.0%   $ 160,467,166

See Security Valuation Note.
Variable rate security. The rate disclosed is the rate in effect on the report date. The information in parenthesis represents the benchmark and reference rate for each relevant security and the rate floats based upon the reference rate and spread. The security may be further subject to interest rate floors and caps. For loan agreements, the rate shown may represent a weighted average interest rate. Certain variable rate securities are not based on a published reference rate and spread, but are determined by the issuer or agent and are based on current market conditions, or, for mortgage-backed securities, are impacted by the individual mortgages which are paying off over time. These securities do not indicate a reference rate and spread in their descriptions.
ICE— Intercontinental Exchange.
LIBOR— London Interbank Offered Rate.
M— Month.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Agency Obligation $108,640,886 $ $108,640,886 $—
U.S. Treasury Obligations 40,998,394 40,998,394
Short-Term Investments 10,713,151 10,713,151
Total Investments $ 160,352,431 $ 10,713,151 $ 149,639,280 $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
60


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Limited Maturity Bond Fund
  Par
(000)
Value†
ASSET BACKED SECURITIES — 28.6%
522 Funding CLO Ltd., Series 2018-2A Class A (3 M ICE LIBOR + 1.040%, Floor 1.040%), 144A
1.258%, 04/20/31@,•
$ 2,400 $ 2,382,247
ACIS CLO Ltd., Series 2014-4A Class B (3 M ICE LIBOR + 1.770%), 144A
1.984%, 05/01/26@,•
2,000 1,995,056
Adams Mill CLO Ltd., Series 2014-1A Class B2R, 144A
3.350%, 07/15/26@
2,750 2,751,235
Babson CLO Ltd.,    
Series 2014-IA Class BR (3 M ICE LIBOR + 2.200%), 144A, 2.418%, 07/20/25@,• 2,500 2,500,360
Series 2014-IA Class C (3 M ICE LIBOR + 3.450%), 144A, 3.668%, 07/20/25@,• 1,500 1,500,429
Barings CLO Ltd., Series 2017-1A Class B1 (3 M ICE LIBOR + 1.700%), 144A
1.918%, 07/18/29@,•
1,500 1,500,105
Benefit Street Partners CLO VIII Ltd., Series 2015-8A Class A1AR (3 M ICE LIBOR + 1.100%, Floor 1.100%), 144A
1.318%, 01/20/31@,•
2,500 2,488,890
BlueMountain CLO Ltd., Series 2015-1A Class A1R (3 M ICE LIBOR + 1.330%), 144A
1.554%, 04/13/27@,•
345 345,628
CIFC Funding Ltd., Series 2014-2RA Class A1 (3 M ICE LIBOR + 1.050%, Floor 1.050%), 144A
1.265%, 04/24/30@,•
2,000 1,994,878
Crestline Denali CLO XVI Ltd., Series 2018-1A Class A (3 M ICE LIBOR + 1.120%, Floor 1.120%), 144A
1.338%, 01/20/30@,•
3,000 2,987,583
ECMC Group Student Loan Trust, Series 2019-1A Class A1A, 144A
2.720%, 07/25/69@
1,838 1,916,422
Edsouth Indenture No 4 LLC, Series 2013-1 Class A (1 M ICE LIBOR + 0.570%), 144A
0.718%, 02/26/29@,•
3,797 3,783,319
Elm CLO Ltd., Series 2014-1A Class BRR (3 M ICE LIBOR + 1.750%), 144A
1.968%, 01/17/29@,•
2,000 1,995,480
First Eagle BSL CLO Ltd., Series 2019-1A Class B (3 M ICE LIBOR + 3.250%, Floor 3.250%), 144A
3.468%, 01/20/33@,•
1,500 1,502,493
  Par
(000)
Value†
 
Ford Credit Auto Owner Trust, Series 2020-B Class A2,
0.500%, 02/15/23
$ 5,410 $ 5,415,831
GM Financial Consumer Automobile Receivables Trust, Series 2020-2 Class A2A,
1.500%, 03/16/23
1,043 1,048,205
Halcyon Loan Advisors Funding Ltd., Series 2015-2A Class AR (3 M ICE LIBOR + 1.080%, Floor 1.080%), 144A
1.295%, 07/25/27@,•
1,680 1,673,759
Limerock CLO III LLC, Series 2014-3A Class A1R (3 M ICE LIBOR + 1.200%), 144A
1.418%, 10/20/26@,•
410 410,212
Mariner CLO LLC, Series 2018-6A Class B (3 M ICE LIBOR + 1.680%), 144A
1.902%, 07/28/31@,•
2,000 2,000,066
Navient Private Education Loan Trust,    
Series 2015-AA Class A3 (1 M ICE LIBOR + 1.700%), 144A, 1.859%, 11/15/30@,• 1,500 1,533,136
Series 2014-AA Class A3 (1 M ICE LIBOR + 1.600%), 144A, 1.759%, 10/15/31@,• 1,499 1,518,069
Series 2015-BA Class A3 (1 M ICE LIBOR + 1.450%), 144A, 1.609%, 07/16/40@,• 2,790 2,826,178
Navient Private Education Refi Loan Trust, Series 2020-EA Class A, 144A
1.690%, 05/15/69@
3,257 3,324,151
NZCG Funding Ltd., Series 2015-1A Class A2R (3 M ICE LIBOR + 1.550%, Floor 1.550%), 144A
1.783%, 02/26/31@,•
3,350 3,329,873
Ocean Trails CLO V, Series 2014-5A Class ARR (3 M ICE LIBOR + 1.280%, Floor 1.280%), 144A
1.504%, 10/13/31@,•
1,966 1,959,470
Recette CLO Ltd., Series 2015-1A Class DR (3 M ICE LIBOR + 2.750%), 144A
2.968%, 10/20/27@,•
2,300 2,289,659
SLM Student Loan Trust, Series 2014-2 Class A3 (1 M ICE LIBOR + 0.590%),
0.738%, 03/25/55•
3,337 3,280,962
SMB Private Education Loan Trust, Series 2015-C Class A3 (1 M ICE LIBOR + 1.950%), 144A
2.109%, 08/16/32@,•
2,405 2,463,313
 
61


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Limited Maturity Bond Fund
  Par
(000)
Value†
ASSET BACKED SECURITIES — (continued)
Sound Point CLO V-R Ltd., Series 2014-1RA Class B (3 M ICE LIBOR + 1.750%, Floor 1.750%), 144A
1.968%, 07/18/31@,•
$ 2,000 $ 1,945,338
Towd Point Mortgage Trust,    
Series 2015-1 Class A2, 144A, 3.250%, 10/25/53@,• 2,526 2,557,620
Series 2015-4 Class A1B, 144A, 2.750%, 04/25/55@,• 2,322 2,329,168
TRESTLES CLO Ltd., Series 2017-1A Class A1A (3 M ICE LIBOR + 1.290%), 144A
1.505%, 07/25/29@,•
1,250 1,250,065
Trinitas CLO XII Ltd., Series 2020-12A Class C (3 M ICE LIBOR + 3.000%, Floor 3.000%), 144A
3.215%, 04/25/33@,•
1,500 1,500,566
Verizon Owner Trust, Series 2017-3A Class B, 144A
2.380%, 04/20/22@
641 642,104
TOTAL ASSET BACKED SECURITIES
(Cost $72,809,602)
72,941,870
COMMERCIAL MORTGAGE BACKED SECURITIES — 11.8%
BX Commercial Mortgage Trust, Series 2019-XL Class B (1 M ICE LIBOR + 1.080%, Floor 1.080%), 144A
1.239%, 10/15/36@,•
1,424 1,423,946
Citigroup Commercial Mortgage Trust, Series 2018-TBR Class D (1 M ICE LIBOR + 1.800%, Floor 1.800%), 144A
1.959%, 12/15/36@,•
1,000 916,957
COMM Mortgage Trust, Series 2014-CR20 Class A3
3.326%, 11/10/47
3,000 3,200,077
FHLMC Multifamily Structured Pass-Through Certificates,    
Series K019 Class X1, 1.585%, 03/25/22• 24,761 312,589
Series K021 Class A2, 2.396%, 06/25/22 3,000 3,079,252
Series KC02 Class X3, 3.065%, 08/25/25• 14,500 1,636,254
FREMF Mortgage Trust,    
Series 2013-K25 Class C, 144A, 3.619%, 11/25/45@,• 2,110 2,190,799
Series 2013-K27 Class C, 144A, 3.496%, 01/25/46@,• 2,000 2,082,406
Series 2013-K35 Class B, 144A, 3.935%, 12/25/46@,• 2,260 2,436,590
Series 2011-K14 Class B, 144A, 5.209%, 02/25/47@,• 1,050 1,060,684
  Par
(000)
Value†
 
Series 2014-K716 Class B, 144A, 3.929%, 08/25/47@,• $ 2,550 $ 2,576,986
Series 2014-K717 Class C, 144A, 3.630%, 11/25/47@,• 1,500 1,516,994
GS Mortgage Securities Corp. Trust, Series 2018-HULA Class B (1 M ICE LIBOR + 1.250%, Floor 1.250%), 144A
1.409%, 07/15/25@,•
1,947 1,900,639
GS Mortgage Securities Trust,    
Series 2010-C1 Class A2, 144A, 4.592%, 08/10/43@ 199 199,036
Series 2010-C1 Class B, 144A, 5.148%, 08/10/43@ 2,000 1,930,822
Hawaii Hotel Trust, Series 2019-MAUI Class C (1 M ICE LIBOR + 1.650%, Floor 1.650%), 144A
1.809%, 05/15/38@,•
1,500 1,438,062
J.P. Morgan Chase Commercial Mortgage Securities Trust, Series 2018-PHH Class C (1 M ICE LIBOR + 1.360%, Floor 2.860%), 144A
2.860%, 06/15/35@,•
2,000 1,704,857
WFRBS Commercial Mortgage Trust, Series 2012-C7 Class XA, 144A
1.306%, 06/15/45@,•
45,762 524,810
TOTAL COMMERCIAL MORTGAGE BACKED SECURITIES
(Cost $32,523,264)
30,131,760
CORPORATE BONDS — 43.5%
Aerospace & Defense — 1.1%
The Boeing Co.
4.508%, 05/01/23
2,500 2,702,081
Agriculture — 1.0%
Altria Group, Inc.
3.490%, 02/14/22
1,500 1,551,537
Cargill, Inc., 144A
3.050%, 04/19/21@
1,000 1,008,245
    2,559,782
Airlines — 1.6%
Air Canada Pass Through Trust, Series 2013-1 Class B, 144A
5.375%, 11/15/22@
731 732,933
Continental Airlines Pass Through Trust, Series 2000-2 Class A-1
7.707%, 10/02/22
63 63,023
Delta Air Lines Pass Through Trust, Series 2007-1 Class B
8.021%, 02/10/24
594 580,487
U.S. Airways Pass Through Trust, Series 2012-2 Class B
6.750%, 12/03/22
2,029 1,972,634
 
62


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Limited Maturity Bond Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Airlines — (continued)
UAL Pass Through Trust, Series 2007-1 Class A
6.636%, 01/02/24
$ 793 $ 808,614
    4,157,691
Apparel — 0.9%
VF Corp.
2.050%, 04/23/22
2,250 2,298,330
Auto Manufacturers — 2.9%
BMW US Capital LLC, 144A
3.800%, 04/06/23@
2,250 2,416,494
Ford Motor Credit Co., LLC
3.470%, 04/05/21
2,250 2,250,000
General Motors Financial Co., Inc. (3 M ICE LIBOR + 0.850%)
1.080%, 04/09/21•
1,000 1,000,609
Volkswagen Group of America Finance LLC, 144A
3.125%, 05/12/23@
1,500 1,584,284
    7,251,387
Banks — 3.2%
Central Fidelity Capital Trust I (3 M ICE LIBOR + 1.000%)
1.237%, 04/15/27•
1,750 1,647,773
CIT Group, Inc.
4.125%, 03/09/21
1,000 1,003,000
Citibank NA
3.400%, 07/23/21
1,500 1,522,094
JPMorgan Chase & Co. (3 M ICE LIBOR + 3.470%)
3.684%µ,•
1,022 1,019,909
Mitsubishi UFJ Financial Group, Inc.
3.535%, 07/26/21
1,500 1,527,201
The Bank of Nova Scotia
3.125%, 04/20/21
1,500 1,512,866
    8,232,843
Beverages — 0.6%
Keurig Dr Pepper, Inc.
3.551%, 05/25/21
1,500 1,518,708
Biotechnology — 0.6%
Gilead Sciences, Inc.
0.750%, 09/29/23
1,500 1,504,559
Building Materials — 1.2%
Builders FirstSource, Inc., 144A
6.750%, 06/01/27@
1,500 1,627,065
Vulcan Materials Co. (3 M ICE LIBOR + 0.650%)
0.875%, 03/01/21•
1,500 1,500,635
    3,127,700
Commercial Services — 0.9%
Service Corp International
8.000%, 11/15/21
2,100 2,220,750
  Par
(000)
Value†
 
Computers — 0.6%
Hewlett Packard Enterprise Co.
1.450%, 04/01/24
$ 1,500 $ 1,541,278
Diversified Financial Services — 2.6%
AerCap Ireland Capital DAC
4.450%, 12/16/21
1,000 1,029,880
BOC Aviation Ltd. (3 M ICE LIBOR + 1.050%), 144A
1.264%, 05/02/21@,•
2,000 1,996,200
Intercontinental Exchange, Inc.
0.700%, 06/15/23
1,500 1,510,389
OneMain Finance Corp.
8.250%, 10/01/23
1,000 1,147,500
Park Aerospace Holdings Ltd., 144A
3.625%, 03/15/21@
1,000 1,002,698
    6,686,667
Electric — 7.4%
American Electric Power Co., Inc.
0.750%, 11/01/23
2,500 2,505,609
CenterPoint Energy, Inc.
3.600%, 11/01/21
1,000 1,026,661
DTE Electric Co.
3.900%, 06/01/21
2,000 2,011,370
Edison International
3.125%, 11/15/22
1,000 1,038,243
Georgia Power Co.
2.100%, 07/30/23
1,900 1,984,544
NextEra Energy Capital Holdings, Inc.
2.900%, 04/01/22
1,500 1,547,836
Niagara Mohawk Power Corp., 144A
3.508%, 10/01/24@
2,000 2,196,191
NRG Energy, Inc.
7.250%, 05/15/26
1,600 1,688,000
Pacific Gas and Electric Co.
1.750%, 06/16/22
1,500 1,504,233
San Diego Gas & Electric Co.
1.914%, 02/01/22
344 345,762
Southern California Edison Co.
3.700%, 08/01/25
2,750 3,085,104
    18,933,553
Electronics — 0.6%
Honeywell International, Inc. (3 M ICE LIBOR + 0.370%)
0.583%, 08/08/22•
1,500 1,506,600
Food — 0.9%
Albertsons Cos., Inc., 144A
3.500%, 02/15/23@
1,300 1,332,500
General Mills, Inc.
3.200%, 04/16/21
1,000 1,007,674
    2,340,174
Healthcare Products — 0.9%
Stryker Corp.
0.600%, 12/01/23
1,500 1,502,370
 
63


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Limited Maturity Bond Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Healthcare Products — (continued)
Zimmer Biomet Holdings, Inc. (3 M ICE LIBOR + 0.750%)
0.989%, 03/19/21•
$ 888 $ 888,000
    2,390,370
Healthcare Services — 0.8%
UnitedHealth Group, Inc.
3.150%, 06/15/21
2,000 2,025,101
Home Builders — 0.6%
Lennar Corp.
4.125%, 01/15/22
1,500 1,535,625
Lodging — 0.6%
Marriott International, Inc. (3 M ICE LIBOR + 0.650%)
0.876%, 03/08/21•
1,500 1,500,569
Machinery — Construction & Mining — 0.6%
Caterpillar Financial Services Corp.
3.150%, 09/07/21
1,500 1,528,991
Machinery — Diversified — 1.7%
CNH Industrial Capital LLC
1.950%, 07/02/23
2,250 2,316,253
John Deere Capital Corp. (3 M ICE LIBOR + 0.240%)
0.460%, 03/12/21•
2,000 2,000,662
    4,316,915
Media — 1.2%
Charter Communications Operating LLC
4.464%, 07/23/22
1,500 1,581,365
Fox Corp.
3.666%, 01/25/22
1,500 1,552,405
    3,133,770
Miscellaneous Manufacturing — 0.6%
Trane Technologies Global Holding Co., Ltd.
2.900%, 02/21/21
1,500 1,504,747
Oil & Gas — 3.1%
HollyFrontier Corp.
2.625%, 10/01/23
1,500 1,533,009
Occidental Petroleum Corp. (3 M ICE LIBOR + 1.450%)
1.671%, 08/15/22•
2,250 2,205,000
Phillips 66    
(3 M ICE LIBOR + 0.600%), 0.833%, 02/26/21• 2,000 2,000,230
0.900%, 02/15/24 2,000 2,004,844
    7,743,083
Packaging and Containers — 1.0%
Ball Corp.
4.000%, 11/15/23
2,250 2,396,250
  Par
(000)
Value†
 
Pharmaceuticals — 4.1%
AbbVie, Inc.
2.300%, 11/21/22
$ 1,500 $ 1,554,600
Bayer US Finance II LLC, 144A
3.500%, 06/25/21@
2,000 2,024,315
Bristol-Myers Squibb Co.    
2.875%, 02/19/21 1,500 1,504,861
2.600%, 05/16/22 1,000 1,031,832
Elanco Animal Health, Inc.
5.272%, 08/28/23
1,645 1,797,163
Viatris, Inc., 144A
1.125%, 06/22/22@
1,000 1,009,451
Zoetis, Inc.
3.250%, 08/20/21
1,500 1,527,664
    10,449,886
Real Estate Investment Trusts — 0.4%
Simon Property Group LP
3.500%, 09/01/25
1,000 1,110,512
Retail — 0.6%
Family Dollar Stores, Inc.
5.000%, 02/01/21
1,500 1,504,506
Semiconductors — 0.4%
Micron Technology, Inc.
2.497%, 04/24/23
1,000 1,042,018
Telecommunications — 0.8%
Sprint Spectrum Co., LLC, 144A
3.360%, 03/20/23@
375 378,525
T-Mobile USA, Inc., 144A
3.500%, 04/15/25@
1,500 1,657,470
    2,035,995
TOTAL CORPORATE BONDS
(Cost $109,067,968)
  110,800,441
RESIDENTIAL MORTGAGE BACKED SECURITIES — 4.5%
Collateralized Mortgage Obligations — 3.4%
Citigroup Mortgage Loan Trust, Series 2014-J1 Class A1, 144A
3.500%, 06/25/44@,•
1,524 1,559,477
CSMC Trust, Series 2018-J1 Class A26, 144A
3.500%, 02/25/48@,•
2,952 2,962,595
Flagstar Mortgage Trust, Series 2017-1 Class 1A5, 144A
3.500%, 03/25/47@,•
693 694,883
OBX Trust, Series 2019-INV2 Class A5, 144A
4.000%, 05/27/49@,•
1,160 1,192,901
Visio Trust, Series 2019-1 Class A1, 144A
3.572%, 06/25/54@,•
2,258 2,286,790
    8,696,646
 
64


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Limited Maturity Bond Fund
  Par
(000)
Value†
RESIDENTIAL MORTGAGE BACKED SECURITIES — (continued)
Freddie Mac REMICS — 1.1%
Series 4413 Class HP, 3.500%, 03/15/40 $ 1,901 $ 1,922,381
Series 4895 Class C, 4.500%, 02/15/49 929 948,378
    2,870,759
TOTAL RESIDENTIAL MORTGAGE BACKED SECURITIES
(Cost $11,607,332)
  11,567,405
U.S. TREASURY OBLIGATIONS — 9.1%
U.S. Treasury Bill
0.173%, 05/20/21¤
8,000 7,997,545
U.S. Treasury Note
1.125%, 08/31/21
15,000 15,101,953
TOTAL U.S. TREASURY OBLIGATIONS
(Cost $23,094,533)
23,099,498
  Number of
Shares
 
SHORT-TERM INVESTMENTS — 2.4%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $5,990,829)
5,990,829 5,990,829
TOTAL INVESTMENTS — 99.9%
(Cost $255,093,528)
  $ 254,531,803
Other Assets & Liabilities — 0.1% 346,070
TOTAL NET ASSETS — 100.0%   $ 254,877,873

See Security Valuation Note.
@ Security exempt from registration under Rule 144A of the Securities Act of 1933, as amended. At December 31, 2020, the aggregate value of Rule 144A securities was $112,763,477, which represents 44.2% of the Fund’s net assets.
Variable rate security. The rate disclosed is the rate in effect on the report date. The information in parenthesis represents the benchmark and reference rate for each relevant security and the rate floats based upon the reference rate and spread. The security may be further subject to interest rate floors and caps. For loan agreements, the rate shown may represent a weighted average interest rate. Certain variable rate securities are not based on a published reference rate and spread, but are determined by the issuer or agent and are based on current market conditions, or, for mortgage-backed securities, are impacted by the individual mortgages which are paying off over time. These securities do not indicate a reference rate and spread in their descriptions.
µ Perpetual security with no stated maturity date.
¤ Zero Coupon Bond. The interest rate disclosed represents the effective yield from the date of acquisition to maturity.
CLO— Collateralized Loan Obligation.
FHLMC— Federal Home Loan Mortgage Corporation.
ICE— Intercontinental Exchange.
LIBOR— London Interbank Offered Rate.
LLC— Limited Liability Company.
LP— Limited Partnership.
M— Month.
NA— National Association.
REMICS— Real Estate Mortgage Investment Conduits.
Country Weightings as of 12/31/2020††
United States 81%
Cayman Islands 16
Canada 1
Ireland 1
Singapore 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Asset Backed Securities $ 72,941,870 $ $ 72,941,870 $—
Commercial Mortgage Backed Securities 30,131,760 30,131,760
Corporate Bonds 110,800,441 110,800,441
Residential Mortgage Backed Securities 11,567,405 11,567,405
U.S. Treasury Obligations 23,099,498 23,099,498
Short-Term Investments 5,990,829 5,990,829
Total Investments $ 254,531,803 $ 5,990,829 $ 248,540,974 $
Other Financial Instruments(1)        
Futures Contracts $ 96,946 $ 96,946 $ $—
Total Assets—Other Financial Instruments $ 96,946 $ 96,946 $ $
LIABILITIES TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Other Financial Instruments(1)        
Futures Contracts $(29,876) $(29,876) $— $—
Total Liabilities—Other Financial Instruments $ (29,876) $ (29,876) $ $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
 
65


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Limited Maturity Bond Fund
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
Futures contracts held by the Fund at December 31, 2020 are as follows:
Futures Contracts:
Exchange Traded
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Long   U.S. Treasury 2 Year Note   03/31/2021   340   2,000   $ 111   $ 75,132,031   $ 75,258   $
Long   U.S. Treasury 10 Year Note   03/22/2021   140   1,000   138   19,330,937   21,688  
Long   U.S. Treasury 10 Year Ultra Note   03/22/2021   20   1,000   156   3,127,188     (9,882)
                            $96,946   $(9,882)
 
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Short   U.S. Treasury 5 Year Note   03/31/2021   (67)   1,000   $126   $(8,452,992)   $   $ (19,994)
                            $   $ (19,994)
                            $96,946   $(29,876)
The accompanying notes are an integral part of these financial statements.
66


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Quality Bond Fund
  Par
(000)
Value†
ASSET BACKED SECURITIES — 12.8%
Crown Point CLO III Ltd., Series 2015-3A Class A1AR (3 M ICE LIBOR + 0.910%), 144A
1.147%, 12/31/27@,•
$ 3,373 $ 3,369,668
First Eagle BSL CLO Ltd., Series 2019-1A Class B (3 M ICE LIBOR + 3.250%, Floor 3.250%), 144A
3.468%, 01/20/33@,•
5,000 5,008,310
Fortress Credit BSL III Ltd., Series 2015-1A Class B1R (3 M ICE LIBOR + 1.730%, Floor 1.730%), 144A
1.948%, 04/18/31@,•
3,000 2,973,567
Highbridge Loan Management Ltd., Series 7A-2015 Class A2R (3 M ICE LIBOR + 0.900%), 144A
1.121%, 03/15/27@,•
2,000 1,993,168
Mountain View CLO LLC, Series 2017-2A Class A (3 M ICE LIBOR + 1.210%), 144A
1.440%, 01/16/31@,•
3,500 3,486,003
Nelnet Student Loan Trust, Series 2019-5 Class A, 144A
2.530%, 10/25/67@
3,210 3,358,259
PHEAA Student Loan Trust, Series 2013-1A Class A (1 M ICE LIBOR + 0.500%), 144A
0.648%, 11/25/36@,•
3,057 2,972,007
Recette CLO Ltd., Series 2015-1A Class DR (3 M ICE LIBOR + 2.750%), 144A
2.968%, 10/20/27@,•
1,500 1,493,256
SLM Student Loan Trust,    
Series 2012-6 Class B (1 M ICE LIBOR + 1.000%), 1.148%, 04/27/43• 4,860 4,496,095
Series 2014-2 Class A3 (1 M ICE LIBOR + 0.590%), 0.738%, 03/25/55• 4,672 4,593,347
SMB Private Education Loan Trust,    
Series 2015-C Class A3 (1 M ICE LIBOR + 1.950%), 144A, 2.109%, 08/16/32@,• 5,000 5,121,233
Series 2014-A Class B, 144A, 4.000%, 09/15/42@ 1,930 2,024,786
Series 2015-C Class B, 144A, 3.500%, 09/15/43@ 5,000 5,237,120
Steele Creek CLO Ltd., Series 2016-1A Class BR (3 M ICE LIBOR + 1.650%, Floor 1.650%), 144A
1.867%, 06/15/31@,•
3,250 3,144,447
Toyota Auto Receivables Owner Trust, Series 2018-D Class A3,
3.180%, 03/15/23
1,610 1,636,353
  Par
(000)
Value†
 
Trinitas CLO III Ltd., Series 2015-3A Class BR (3 M ICE LIBOR + 1.400%), 144A
1.637%, 07/15/27@,•
$ 4,000 $ 3,979,700
Trinitas CLO XII Ltd., Series 2020-12A Class C (3 M ICE LIBOR + 3.000%, Floor 3.000%), 144A
3.215%, 04/25/33@,•
2,000 2,000,754
Venture 37 CLO Ltd., Series 2019-37A Class A1F, 144A
3.657%, 07/15/32@
5,000 5,059,175
TOTAL ASSET BACKED SECURITIES
(Cost $61,457,942)
61,947,248
COMMERCIAL MORTGAGE BACKED SECURITIES — 18.0%
Benchmark Mortgage Trust, Series 2019-B9 Class A5
4.016%, 03/15/52
5,000 5,938,170
CFCRE Commercial Mortgage Trust, Series 2011-C1 Class A4, 144A
4.961%, 04/15/44@,•
72 72,246
COMM Mortgage Trust, Series 2014-CR20 Class A3
3.326%, 11/10/47
5,000 5,333,462
FHLMC Multifamily Structured Pass-Through Certificates,    
Series K019 Class X1, 1.585%, 03/25/22• 44,672 563,936
Series K043 Class A2, 3.062%, 12/25/24 3,000 3,298,631
Series K058 Class A2, 2.653%, 08/25/26 5,000 5,520,355
Series K061 Class A2, 3.347%, 11/25/26• 4,750 5,422,123
Series K094 Class A2, 2.903%, 06/25/29 2,000 2,277,326
Series K107 Class A1, 1.228%, 10/25/29 7,443 7,613,209
Fontainebleau Miami Beach Trust, Series 2019-FBLU Class B, 144A
3.447%, 12/10/36@
2,500 2,581,188
FREMF Mortgage Trust,    
Series 2018-K731 Class B, 144A, 3.933%, 02/25/25@,• 6,610 7,217,021
Series 2019-K735 Class B, 144A, 4.018%, 05/25/26@,• 6,000 6,647,157
Series 2012-K17 Class B, 144A, 4.319%, 12/25/44@,• 4,000 4,122,873
Series 2012-K19 Class C, 144A, 4.017%, 05/25/45@,• 4,500 4,631,996
Series 2012-K23 Class C, 144A, 3.656%, 10/25/45@,• 5,000 5,176,194
Series 2013-K27 Class C, 144A, 3.496%, 01/25/46@,• 3,647 3,797,267
 
67


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Quality Bond Fund
  Par
(000)
Value†
COMMERCIAL MORTGAGE BACKED SECURITIES — (continued)
Series 2015-K48 Class B, 144A, 3.640%, 08/25/48@,• $ 5,000 $ 5,425,129
Series 2016-K52 Class B, 144A, 3.925%, 01/25/49@,• 5,065 5,592,993
Series 2019-K102 Class B, 144A, 3.530%, 12/25/51@,• 5,000 5,491,520
Government National Mortgage Association, Series 2011-77 Class D
4.149%, 10/16/45•
359 371,408
TOTAL COMMERCIAL MORTGAGE BACKED SECURITIES
(Cost $81,826,174)
87,094,204
CORPORATE BONDS — 43.0%
Aerospace & Defense — 1.5%
General Dynamics Corp.
3.500%, 05/15/25
3,000 3,353,407
The Boeing Co.    
1.950%, 02/01/24 2,000 2,059,757
3.250%, 02/01/35 1,950 1,999,734
    7,412,898
Agriculture — 0.7%
Cargill, Inc., 144A
3.250%, 03/01/23@
3,000 3,181,469
Airlines — 4.1%
Air Canada Pass Through Trust, Series 2013-1 Class B, 144A
5.375%, 11/15/22@
2,672 2,678,310
Delta Air Lines Pass Through Trust,    
Series 2007-1 Class A, 6.821%, 02/10/24 2,672 2,736,987
Series 2007-1 Class B, 8.021%, 02/10/24 2,732 2,668,887
Series 2015-1 Class B, 4.250%, 01/30/25 2,012 2,056,847
JetBlue Pass Through Trust, Series 2019-1 Class A
2.950%, 11/15/29
2,890 2,666,386
UAL Pass Through Trust, Series 2007-1 Class A
6.636%, 01/02/24
2,844 2,900,856
United Airlines Pass Through Trust,    
Series 2014-1 Class B, 4.750%, 10/11/23 1,456 1,461,933
Series 2016-1 Class AA, 3.100%, 01/07/30 2,525 2,555,714
    19,725,920
Apparel — 0.7%
VF Corp.
2.800%, 04/23/27
3,000 3,281,443
Auto Manufacturers — 1.3%
BMW US Capital LLC, 144A
3.450%, 04/12/23@
4,000 4,262,615
  Par
(000)
Value†
 
Auto Manufacturers — (continued)
Ford Motor Credit Co., LLC
3.470%, 04/05/21
$ 2,100 $ 2,100,000
    6,362,615
Banks — 3.1%
JPMorgan Chase & Co.    
(3 M ICE LIBOR + 0.500%), 0.714%, 02/01/27• 3,200 3,033,030
(3 M ICE LIBOR + 3.470%), 3.684%µ,• 2,000 1,995,909
KeyCorp. Capital I (3 M ICE LIBOR + 0.740%)
0.978%, 07/01/28•
2,640 2,453,525
NTC Capital I (3 M ICE LIBOR + 0.520%)
0.757%, 01/15/27•
4,595 4,371,250
State Street Corp. (3 M ICE LIBOR + 0.560%)
0.781%, 05/15/28•
1,665 1,572,672
Wachovia Capital Trust III (3 M ICE LIBOR + 0.930%)
5.570%µ,•
1,510 1,529,071
    14,955,457
Biotechnology — 1.7%
Amgen, Inc.    
2.700%, 05/01/22 3,000 3,086,812
2.650%, 05/11/22 2,000 2,061,874
Gilead Sciences, Inc.
1.650%, 10/01/30
3,000 3,010,309
    8,158,995
Building Materials — 1.5%
Martin Marietta Materials, Inc.
4.250%, 07/02/24
3,000 3,345,285
Vulcan Materials Co.
4.500%, 04/01/25
3,565 4,077,894
    7,423,179
Commercial Services — 2.4%
Drawbridge Special Opportunities Fund LP, 144A
5.000%, 08/01/21@
2,000 2,019,247
IHS Markit Ltd., 144A
5.000%, 11/01/22@
2,500 2,673,150
Northwestern University
4.643%, 12/01/44
645 853,168
The Georgetown University
4.315%, 04/01/49
2,485 3,175,879
University of Southern California
3.028%, 10/01/39
2,820 3,067,874
    11,789,318
Computers — 0.7%
Dell International LLC, 144A
5.450%, 06/15/23@
3,000 3,318,062
 
68


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Quality Bond Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Diversified Financial Services — 0.4%
Air Lease Corp.
3.750%, 02/01/22
$ 2,000 $ 2,053,312
Electric — 3.5%
ComEd Financing III
6.350%, 03/15/33
3,355 4,038,317
Edison International
3.550%, 11/15/24
2,000 2,153,424
Louisville Gas and Electric Co.
4.250%, 04/01/49
3,000 3,875,765
Northern States Power Co.
3.600%, 09/15/47
4,000 4,928,691
Pacific Gas and Electric Co.
1.750%, 06/16/22
2,000 2,005,644
    17,001,841
Electronics — 0.3%
Roper Technologies, Inc.
1.400%, 09/15/27
1,500 1,519,034
Food — 3.5%
Kellogg Co.
2.650%, 12/01/23
2,501 2,668,755
Land O' Lakes, Inc., 144A
6.000%, 11/15/22@
3,500 3,756,582
Mars, Inc., 144A
1.625%, 07/16/32@
3,000 2,975,634
Smithfield Foods, Inc., 144A
3.350%, 02/01/22@
3,000 3,041,237
The Hershey Co.
1.700%, 06/01/30
2,000 2,057,687
The J.M. Smucker Co.
3.375%, 12/15/27
2,000 2,222,917
    16,722,812
Forest Products & Paper — 0.5%
Georgia-Pacific LLC, 144A
3.163%, 11/15/21@
2,500 2,546,852
Gas — 0.6%
The Brooklyn Union Gas Co., 144A
3.407%, 03/10/26@
2,500 2,791,721
Healthcare Products — 1.2%
Boston Scientific Corp.
3.750%, 03/01/26
3,000 3,404,520
DENTSPLY SIRONA, Inc.
3.250%, 06/01/30
1,500 1,670,597
Zimmer Biomet Holdings, Inc. (3 M ICE LIBOR + 0.750%)
0.989%, 03/19/21•
666 666,000
    5,741,117
Healthcare Services — 0.4%
Health Care Service Corp. A Mutual Legal Reserve Co., 144A
2.200%, 06/01/30@
2,000 2,092,258
  Par
(000)
Value†
 
Household Products & Wares — 0.5%
Kimberly-Clark Corp.
3.100%, 03/26/30
$ 2,000 $ 2,303,161
Internet — 0.2%
Alibaba Group Holding Ltd.
3.400%, 12/06/27
1,000 1,119,501
Media — 2.6%
Charter Communications Operating LLC
4.464%, 07/23/22
3,000 3,162,730
Comcast Cable Holdings LLC
9.875%, 06/15/22
1,000 1,123,228
Comcast Corp.
3.950%, 10/15/25
4,000 4,595,520
The Walt Disney Co.
2.200%, 01/13/28
3,600 3,853,319
    12,734,797
Mining — 0.2%
Newmont Corp.
3.625%, 06/09/21
1,000 1,008,974
Oil & Gas — 0.8%
BG Energy Capital PLC, 144A
4.000%, 10/15/21@
1,000 1,026,664
BP Capital Markets PLC
2.500%, 11/06/22
2,500 2,597,875
    3,624,539
Pharmaceuticals — 3.8%
AbbVie, Inc.
2.300%, 05/14/21
3,000 3,016,600
Becton Dickinson and Co.
3.700%, 06/06/27
1,956 2,244,728
CVS Health Corp.
1.300%, 08/21/27
3,000 3,013,932
GlaxoSmithKline Capital, Inc.
5.375%, 04/15/34
1,000 1,427,311
Johnson & Johnson
3.550%, 03/01/36
2,337 2,886,095
Mead Johnson Nutrition Co.
4.125%, 11/15/25
2,000 2,307,619
Zoetis, Inc.
4.500%, 11/13/25
3,000 3,501,834
    18,398,119
Pipelines — 1.7%
Energy Transfer Partners LP
5.875%, 03/01/22
2,000 2,091,052
MPLX LP (3 M ICE LIBOR + 1.100%)
1.330%, 09/09/22•
3,000 3,000,509
Transcanada Trust (3 M ICE LIBOR + 4.640%)
5.875%, 08/15/76•
3,000 3,345,000
    8,436,561
 
69


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Quality Bond Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Real Estate Investment Trusts — 1.5%
American Tower Corp.
4.700%, 03/15/22
$ 2,500 $ 2,623,412
Kimco Realty Corp.
2.800%, 10/01/26
3,000 3,271,517
SBA Tower Trust, 144A
1.884%, 01/15/26@
1,500 1,543,835
    7,438,764
Semiconductors — 0.5%
NXP, 144A
3.150%, 05/01/27@
2,000 2,205,104
Software — 0.6%
VMware, Inc.
2.950%, 08/21/22
3,000 3,112,059
Telecommunications — 1.0%
Crown Castle Towers LLC, 144A
3.663%, 05/15/45@
4,000 4,308,371
Sprint Spectrum Co., LLC, 144A
3.360%, 03/20/23@
563 567,787
    4,876,158
Transportation — 1.5%
BNSF Railway Co. Pass Through Trust, Series 2015-1, 144A
3.442%, 06/16/28@
2,379 2,687,709
Federal Express Corp. Pass Through Trust, Series 1999
7.650%, 07/15/24
408 422,854
Union Pacific Corp.
3.375%, 02/01/35
3,336 3,904,099
    7,014,662
TOTAL CORPORATE BONDS
(Cost $197,344,288)
  208,350,702
MUNICIPAL BONDS — 3.3%
State of Texas, Public Finance Authority
3.952%, 10/01/37
3,725 4,356,276
University of Massachusetts Building Authority, Series 3
2.417%, 11/01/28
4,690 5,059,291
University of Michigan, Series B
2.562%, 04/01/50
3,725 3,956,136
West Virginia University, Series A
4.000%, 10/01/47
2,125 2,487,610
TOTAL MUNICIPAL BONDS
(Cost $14,834,832)
  15,859,313
RESIDENTIAL MORTGAGE BACKED SECURITIES — 12.8%
Collateralized Mortgage Obligations — 4.1%
Agate Bay Mortgage Trust, Series 2016-3 Class A5, 144A
3.500%, 08/25/46@,•
486 486,950
  Par
(000)
Value†
 
Collateralized Mortgage Obligations — (continued)
Chase Home Lending Mortgage Trust, Series 2019-1 Class A4, 144A
3.500%, 03/25/50@,•
$ 1,493 $ 1,502,169
GS Mortgage-Backed Securities Corp. Trust, Series 2020-PJ3 Class A13, 144A
2.500%, 10/25/50@
4,022 4,119,163
JP Morgan Mortgage Trust, Series 2017-1 Class A5, 144A
3.500%, 01/25/47@,•
907 907,257
Sequoia Mortgage Trust,    
Series 2017-5 Class A1, 144A, 3.500%, 08/25/47@,• 2,421 2,477,332
Series 2017-CH2 Class A1, 144A, 4.000%, 12/25/47@,• 2,025 2,085,078
Visio Trust, Series 2020-1 Class A3, 144A
3.521%, 08/25/55@,•
4,545 4,721,264
Wells Fargo Mortgage Backed Securities Trust, Series 2020-3 Class A1, 144A
3.000%, 06/25/50@,•
3,448 3,552,599
    19,851,812
Fannie Mae Pool — 6.5%
2.000%, 11/01/40 5,951 6,182,913
2.500%, 01/01/43 1,652 1,767,459
2.500%, 02/01/43 4,668 4,996,444
3.500%, 11/01/44 2,138 2,231,489
3.000%, 01/01/50 3,299 3,459,140
3.000%, 03/01/50 8,543 9,109,684
3.000%, 04/01/50 3,534 3,627,746
    31,374,875
Freddie Mac REMICS — 2.2%
Series 4640 Class LG, 3.500%, 09/15/43 5,899 6,132,978
Series 4800 Class ED, 4.000%, 07/15/44 1,200 1,210,845
Series 4743 Class PA, 3.500%, 01/15/45 2,237 2,259,973
Series 4800 Class KB, 5.000%, 11/15/45 1,110 1,125,238
    10,729,034
TOTAL RESIDENTIAL MORTGAGE BACKED SECURITIES
(Cost $60,955,402)
  61,955,721
U.S. TREASURY OBLIGATIONS — 5.9%
U.S. Treasury Bill
0.075%, 02/18/21¤
10,000 9,999,188
U.S. Treasury Bond    
1.125%, 08/15/40 500 473,359
2.750%, 08/15/42 1,800 2,231,578
 
70


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Quality Bond Fund
  Par
(000)
Value†
U.S. TREASURY OBLIGATIONS — (continued)
2.875%, 05/15/43 $ 2,150 $ 2,718,070
3.625%, 08/15/43 2,850 4,024,957
U.S. Treasury Inflation Indexed Bonds    
0.125%, 07/15/30 4,570 5,126,191
1.000%, 02/15/46 1,923 2,621,662
U.S. Treasury Notes    
2.000%, 07/31/22(a) 600 617,672
1.500%, 11/30/24 500 524,316
1.125%, 02/28/25 500 517,637
TOTAL U.S. TREASURY OBLIGATIONS
(Cost $26,767,378)
28,854,630
  Number of
Shares
 
SHORT-TERM INVESTMENTS — 2.2%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $10,708,186)
10,708,186 10,708,186
TOTAL INVESTMENTS — 98.0%
(Cost $453,894,202)
  $ 474,770,004
Other Assets & Liabilities — 2.0% 9,704,162
TOTAL NET ASSETS — 100.0%   $ 484,474,166

See Security Valuation Note.
@ Security exempt from registration under Rule 144A of the Securities Act of 1933, as amended. At December 31, 2020, the aggregate value of Rule 144A securities was $169,505,456, which represents 35.0% of the Fund’s net assets.
Variable rate security. The rate disclosed is the rate in effect on the report date. The information in parenthesis represents the benchmark and reference rate for each relevant security and the rate floats based upon the reference rate and spread. The security may be further subject to interest rate floors and caps. For loan agreements, the rate shown may represent a weighted average interest rate. Certain variable rate securities are not based on a published reference rate and spread, but are determined by the issuer or agent and are based on current market conditions, or, for mortgage-backed securities, are impacted by the individual mortgages which are paying off over time. These securities do not indicate a reference rate and spread in their descriptions.
µ Perpetual security with no stated maturity date.
¤ Zero Coupon Bond. The interest rate disclosed represents the effective yield from the date of acquisition to maturity.
(a) All or portion of securities segregated as collateral for futures contracts.
CLO— Collateralized Loan Obligation.
FHLMC— Federal Home Loan Mortgage Corporation.
ICE— Intercontinental Exchange.
LIBOR— London Interbank Offered Rate.
LLC— Limited Liability Company.
LP— Limited Partnership.
M— Month.
PLC— Public Limited Company.
REMICS— Real Estate Mortgage Investment Conduits.
Country Weightings as of 12/31/2020††
United States 90%
Cayman Islands 7
United Kingdom 1
Canada 1
Netherlands 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Asset Backed Securities $ 61,947,248 $ $ 61,947,248 $—
Commercial Mortgage Backed Securities 87,094,204 87,094,204
Corporate Bonds 208,350,702 208,350,702
Municipal Bonds 15,859,313 15,859,313
Residential Mortgage Backed Securities 61,955,721 61,955,721
U.S. Treasury Obligations 28,854,630 28,854,630
Short-Term Investments 10,708,186 10,708,186
Total Investments $ 474,770,004 $ 10,708,186 $ 464,061,818 $
Other Financial Instruments(1)        
Futures Contracts $ 299,623 $ 299,623 $ $—
Total Assets—Other Financial Instruments $ 299,623 $ 299,623 $ $
LIABILITIES TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Other Financial Instruments(1)        
Futures Contracts $(220,350) $(220,350) $— $—
Total Liabilities—Other Financial Instruments $ (220,350) $ (220,350) $ $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
 
71


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Quality Bond Fund
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
Futures contracts held by the Fund at December 31, 2020 are as follows:
Futures Contracts:
Exchange Traded
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Long   U.S. Treasury 5 Year Note   03/31/2021   860   1,000   $126   $108,501,094   $ 255,083   $
Long   U.S. Treasury 10 Year Note   03/22/2021   257   1,000   138   35,486,078   39,812  
Long   U.S. Treasury Ultra Bond   03/22/2021   59   1,000   214   12,600,188     (174,829)
                            $294,895   $(174,829)
 
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Short   U.S. Treasury 2 Year Note   03/31/2021   (200)   2,000   $ 110   $(44,195,312)   $   $ (45,521)
Short   U.S. Treasury Long Bond   03/22/2021   (3)   1,000   173   (519,563)   4,728  
                            $ 4,728   $ (45,521)
                            $299,623   $(220,350)
The accompanying notes are an integral part of these financial statements.
72


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
High Yield Bond Fund
  Par
(000)
Value†
ASSET BACKED SECURITIES — 0.9%
First Eagle BSL CLO, Ltd., Series 2019-1A (3 M ICE LIBOR + 4.350%, Floor 4.350%), 144A
4.568%, 01/20/33@,•
(Cost $1,483,950)
$1,500 $ 1,509,036
TOTAL ASSET BACKED SECURITIES
(Cost $1,483,950)
1,509,036
  Number of
Shares
 
COMMON STOCKS — 0.4%
Entertainment — 0.0%
New Cotai Participation, Class B(1),* 1 0
Oil & Gas — 0.4%
Denbury, Inc.* 23,922 614,556
TOTAL COMMON STOCKS
(Cost $466,782)
614,556
PREFERRED STOCKS — 0.7%
Packaging and Containers — 0.0%
Smurfit-Stone Container Corp. (Escrow) CONV.(1),* 725 0
Pipelines — 0.7%
Targa Resources Corp. CONV 1,175 1,211,262
TOTAL PREFERRED STOCKS
(Cost $1,304,279)
  1,211,262
  Par
(000)
 
CORPORATE BONDS — 89.2%
Aerospace & Defense — 1.4%
Howmet Aerospace, Inc.
6.875%, 05/01/25
$ 700 819,000
TransDigm, Inc., 144A
6.250%, 03/15/26@
1,400 1,491,000
    2,310,000
Airlines — 4.7%
American Airlines, Inc., 144A
11.750%, 07/15/25@
700 807,275
Continental Airlines Pass Through Trust, Series 2007-1 Class A
5.983%, 10/19/23
1,026 1,038,287
Delta Air Lines, Inc./SkyMiles IP Ltd., 144A
4.750%, 10/20/28@
700 764,059
JetBlue Airways Corp. Pass Through Trust, Series 2020-1 Class B
7.750%, 05/15/30
1,400 1,523,462
  Par
(000)
Value†
 
Airlines — (continued)
Mileage Plus Holdings LLC/Mileage Plus Intellectual Property Assets Ltd., 144A
6.500%, 06/20/27@
$ 700 $ 752,500
U.S. Airways Pass Through Trust, Series 2012-2 Class B
6.750%, 12/03/22
1,374 1,335,574
UAL Pass Through Trust, Series 2007-1 Class A
6.636%, 01/02/24
793 808,614
United Airlines, Inc. Pass-Through Trust, Series 2020-1 Class A
5.875%, 04/15/29
700 756,149
    7,785,920
Apparel — 1.8%
Hanesbrands, Inc., 144A
5.375%, 05/15/25@
700 740,614
PVH Corp.
4.625%, 07/10/25
1,400 1,577,439
The William Carter Co., 144A
5.500%, 05/15/25@
700 743,390
    3,061,443
Auto Manufacturers — 1.3%
Ford Motor Co.
8.500%, 04/21/23
1,200 1,350,612
Ford Motor Credit Co., LLC
5.125%, 06/16/25
700 761,110
    2,111,722
Auto Parts & Equipment — 1.4%
Adient U.S. LLC, 144A
9.000%, 04/15/25@
700 780,500
Clarios Global LP/Clarios US Finance Co., 144A
8.500%, 05/15/27@
700 760,487
Tenneco, Inc., 144A
7.875%, 01/15/29@
770 864,525
    2,405,512
Building Materials — 1.3%
Builders FirstSource, Inc., 144A
5.000%, 03/01/30@
1,400 1,516,368
Summit Materials LLC/Summit Materials Finance Corp., 144A
5.250%, 01/15/29@
700 735,000
    2,251,368
Chemicals — 1.9%
Axalta Coating Systems LLC/Axalta Coating Systems Dutch Holding B BV, 144A
4.750%, 06/15/27@
700 744,625
Olin Corp., 144A
9.500%, 06/01/25@
700 874,685
 
73


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
High Yield Bond Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Chemicals — (continued)
Tronox, Inc., 144A
6.500%, 05/01/25@
$ 700 $ 749,000
WR Grace & Co-Conn, 144A
4.875%, 06/15/27@
700 742,364
    3,110,674
Commercial Services — 3.9%
ASGN, Inc., 144A
4.625%, 05/15/28@
700 728,000
Ashtead Capital, Inc., 144A
4.250%, 11/01/29@
700 766,388
Jaguar Holding Co. II/PPD Development LP, 144A
5.000%, 06/15/28@
1,250 1,334,375
Nielsen Finance LLC/Nielsen Finance Co., 144A
5.625%, 10/01/28@
700 760,585
Service Corp. International    
7.500%, 04/01/27 1,750 2,130,625
5.125%, 06/01/29 750 830,625
    6,550,598
Computers — 2.0%
Booz Allen Hamilton, Inc., 144A
3.875%, 09/01/28@
700 721,000
MTS Systems Corp., 144A
5.750%, 08/15/27@
1,000 1,085,200
NCR Corp.    
144A, 5.750%, 09/01/27@ 750 796,875
144A, 5.000%, 10/01/28@ 700 738,500
    3,341,575
Distribution & Wholesale — 0.6%
IAA, Inc., 144A
5.500%, 06/15/27@
1,000 1,060,000
Diversified Financial Services — 1.5%
LPL Holdings, Inc., 144A
4.625%, 11/15/27@
700 724,500
OneMain Finance Corp.    
5.625%, 03/15/23 1,000 1,072,500
4.000%, 09/15/30 700 726,327
    2,523,327
Electric — 2.8%
Clearway Energy Operating LLC, 144A
4.750%, 03/15/28@
700 750,750
NRG Energy, Inc., 144A
5.250%, 06/15/29@
1,150 1,265,000
Talen Energy Supply LLC, 144A
7.625%, 06/01/28@
700 754,250
Vistra Operations Co., LLC    
144A, 5.625%, 02/15/27@ 750 797,730
144A, 5.000%, 07/31/27@ 1,000 1,060,000
    4,627,730
  Par
(000)
Value†
 
Electrical Components & Equipment — 0.5%
WESCO Distribution, Inc.    
144A, 7.125%, 06/15/25@ $ 350 $ 384,941
144A, 7.250%, 06/15/28@ 350 398,051
    782,992
Electronics — 0.6%
Itron, Inc., 144A
5.000%, 01/15/26@
1,000 1,021,250
Energy-Alternate Sources — 1.0%
TerraForm Power Operating LLC, 144A
5.000%, 01/31/28@
1,500 1,685,475
Entertainment — 1.9%
Affinity Gaming, 144A
6.875%, 12/15/27@
1,200 1,257,348
Churchill Downs, Inc., 144A
5.500%, 04/01/27@
750 794,063
Downstream Development Authority of the Quapaw Tribe of Oklahoma, 144A
10.500%, 02/15/23@
1,050 1,065,750
    3,117,161
Environmental Control — 1.6%
Clean Harbors, Inc.    
144A, 4.875%, 07/15/27@ 750 782,483
144A, 5.125%, 07/15/29@ 750 819,375
Waste Pro USA, Inc., 144A
5.500%, 02/15/26@
1,000 1,022,500
    2,624,358
Food — 4.4%
Albertsons Cos, Inc./Safeway, Inc./New Albertsons LP/Albertsons LLC    
144A, 4.625%, 01/15/27@ 700 744,625
144A, 4.875%, 02/15/30@ 700 771,316
JBS USA LUX S.A./JBS USA Food Co./JBS USA Finance, Inc., 144A
5.500%, 01/15/30@
1,500 1,723,140
Kraft Heinz Foods Co., 144A
4.250%, 03/01/31@
700 780,540
Lamb Weston Holdings, Inc.    
144A, 4.875%, 11/01/26@ 1,000 1,045,300
144A, 4.875%, 05/15/28@ 500 558,125
Post Holdings, Inc., 144A
5.750%, 03/01/27@
1,000 1,058,750
SEG Holding LLC/SEG Finance Corp., 144A
5.625%, 10/15/28@
700 738,500
    7,420,296
Food Service — 0.4%
Aramark Services, Inc., 144A
6.375%, 05/01/25@
700 748,125
 
74


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
High Yield Bond Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Forest Products & Paper — 0.7%
Clearwater Paper Corp., 144A
4.750%, 08/15/28@
$ 1,050 $ 1,086,750
Gas — 0.6%
NiSource, Inc. (UST Yield Curve CMT 5 Yr + 2.843%)
5.650%µ,•
1,000 1,027,500
Healthcare — 0.5%
The Scotts Miracle-Gro Co.
4.500%, 10/15/29
700 754,250
Healthcare Products — 1.2%
Avantor Funding, Inc., 144A
4.625%, 07/15/28@
750 793,125
Hill-Rom Holdings, Inc., 144A
4.375%, 09/15/27@
500 528,223
Ortho-Clinical Diagnostics, Inc./Ortho-Clinical Diagnostics S.A., 144A
7.375%, 06/01/25@
700 745,500
    2,066,848
Healthcare Services — 4.8%
Acadia Healthcare Co., Inc., 144A
5.500%, 07/01/28@
700 751,835
Charles River Laboratories International, Inc., 144A
4.250%, 05/01/28@
1,050 1,099,875
CHS/Community Health Systems, Inc., 144A
8.000%, 12/15/27@
1,050 1,139,250
Encompass Health Corp.
4.750%, 02/01/30
1,400 1,499,750
HCA, Inc.
5.250%, 06/15/26
1,500 1,775,252
IQVIA, Inc., 144A
5.000%, 10/15/26@
1,000 1,045,000
RP Escrow Issuer LLC, 144A
5.250%, 12/15/25@
770 804,696
    8,115,658
Home Builders — 0.4%
Williams Scotsman International, Inc., 144A
4.625%, 08/15/28@
700 724,500
Insurance — 0.5%
CNO Financial Group, Inc.
5.250%, 05/30/25
750 870,583
Internet — 1.4%
Arches Buyer, Inc., 144A
6.125%, 12/01/28@
770 795,179
Go Daddy Operating Co., LLC/GD Finance Co., Inc., 144A
5.250%, 12/01/27@
1,400 1,473,500
    2,268,679
  Par
(000)
Value†
 
Iron & Steel — 0.5%
Cleveland-Cliffs, Inc., 144A
9.875%, 10/17/25@
$ 700 $ 823,375
Machinery — Construction & Mining — 0.6%
Terex Corp., 144A
5.625%, 02/01/25@
1,050 1,081,631
Machinery — Diversified — 3.0%
Granite US Holdings Corp., 144A
11.000%, 10/01/27@
1,050 1,165,500
Mueller Water Products, Inc., 144A
5.500%, 06/15/26@
1,000 1,036,250
RBS Global, Inc./Rexnord LLC, 144A
4.875%, 12/15/25@
1,500 1,528,125
Stevens Holding Co., Inc., 144A
6.125%, 10/01/26@
1,200 1,296,000
    5,025,875
Media — 6.2%
CCO Holdings LLC/CCO Holdings Capital Corp.    
144A, 5.125%, 05/01/27@ 1,000 1,061,190
144A, 4.500%, 08/15/30@ 700 742,875
144A, 4.500%, 05/01/32@ 875 934,255
CSC Holdings LLC    
144A, 6.500%, 02/01/29@ 2,150 2,427,457
144A, 4.625%, 12/01/30@ 300 313,125
DISH DBS Corp.
7.375%, 07/01/28
700 745,500
iHeartCommunications, Inc., 144A
5.250%, 08/15/27@
700 735,000
Nexstar Broadcasting, Inc., 144A
5.625%, 07/15/27@
700 749,875
Sinclair Television Group, Inc., 144A
5.125%, 02/15/27@
700 714,805
Sirius XM Radio, Inc., 144A
5.500%, 07/01/29@
750 825,234
Townsquare Media, Inc., 144A
6.875%, 02/01/26@
350 366,566
Ziggo Bond Co. BV, 144A
5.125%, 02/28/30@
700 738,710
    10,354,592
Mining — 1.6%
Alcoa Nederland Holding BV, 144A
7.000%, 09/30/26@
1,000 1,065,000
Arconic Corp., 144A
6.125%, 02/15/28@
875 943,359
Freeport-McMoRan, Inc.
5.000%, 09/01/27
700 742,000
    2,750,359
Miscellaneous Manufacturing — 1.5%
Amsted Industries, Inc., 144A
4.625%, 05/15/30@
1,050 1,099,875
 
75


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
High Yield Bond Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Miscellaneous Manufacturing — (continued)
FXI Holdings, Inc., 144A
12.250%, 11/15/26@
$ 1,293 $ 1,474,020
    2,573,895
Oil & Gas — 5.7%
Apache Corp.
6.000%, 01/15/37
1,200 1,326,000
Ascent Resources Utica Holdings LLC/ARU Finance Corp., 144A
8.250%, 12/31/28@
700 698,250
Comstock Resources, Inc.    
9.750%, 08/15/26 700 752,500
9.750%, 08/15/26 700 754,250
Continental Resources, Inc., 144A
5.750%, 01/15/31@
1,050 1,165,479
HollyFrontier Corp.
4.500%, 10/01/30
1,550 1,637,340
Occidental Petroleum Corp.
6.125%, 01/01/31
1,050 1,123,710
Parkland Corp., 144A
5.875%, 07/15/27@
1,150 1,243,414
Southwestern Energy Co.
8.375%, 09/15/28
700 759,500
    9,460,443
Oil & Gas Services — 0.5%
Archrock Partners LP/Archrock Partners Finance Corp., 144A
6.875%, 04/01/27@
700 753,375
Packaging and Containers — 3.0%
Ardagh Packaging Finance PLC/Ardagh Holdings USA, Inc., 144A
5.250%, 08/15/27@
700 734,867
Berry Global, Inc., 144A
5.625%, 07/15/27@
750 806,484
Graham Packaging Co., Inc., 144A
7.125%, 08/15/28@
700 773,500
Mauser Packaging Solutions Holding Co., 144A
8.500%, 04/15/24@
1,575 1,630,125
TriMas Corp., 144A
4.875%, 10/15/25@
1,000 1,025,000
    4,969,976
Pharmaceuticals — 1.2%
Bausch Health Cos., Inc., 144A
5.250%, 02/15/31@
700 731,304
Elanco Animal Health, Inc.
5.900%, 08/28/28
1,050 1,239,000
    1,970,304
Pipelines — 2.7%
Blue Racer Midstream LLC/Blue Racer Finance Corp., 144A
7.625%, 12/15/25@
350 372,750
  Par
(000)
Value†
 
Pipelines — (continued)
Cheniere Energy, Inc., 144A
4.625%, 10/15/28@
$ 1,200 $1,260,000
EnLink Midstream LLC, 144A
5.625%, 01/15/28@
700 714,140
Harvest Midstream I LP, 144A
7.500%, 09/01/28@
1,050 1,116,938
Tallgrass Energy Partners LP/Tallgrass Energy Finance Corp., 144A
7.500%, 10/01/25@
1,050 1,133,569
    4,597,397
Real Estate — 1.7%
Greystar Real Estate Partners LLC, 144A
5.750%, 12/01/25@
750 764,250
Realogy Group LLC/Realogy Co-Issuer Corp., 144A
7.625%, 06/15/25@
1,050 1,140,006
The Howard Hughes Corp., 144A
5.375%, 08/01/28@
875 941,063
    2,845,319
Real Estate Investment Trusts — 1.5%
MGM Growth Properties Operating Partnership LP/MGP Finance Co-Issuer, Inc.
5.750%, 02/01/27
1,000 1,121,870
MPT Operating Partnership LP/MPT Finance Corp.    
5.000%, 10/15/27 700 744,625
3.500%, 03/15/31 700 722,750
    2,589,245
Retail — 7.6%
Bed Bath & Beyond, Inc.    
3.749%, 08/01/24 700 697,295
4.915%, 08/01/34 1,550 1,379,391
Burlington Coat Factory Warehouse Corp., 144A
6.250%, 04/15/25@
700 743,750
Ferrellgas LP/Ferrellgas Finance Corp., 144A
10.000%, 04/15/25@
1,200 1,326,624
Ken Garff Automotive LLC, 144A
4.875%, 09/15/28@
700 728,000
KFC Holding Co./Pizza Hut Holdings LLC/Taco Bell of America LLC, 144A
5.250%, 06/01/26@
1,000 1,037,500
L Brands, Inc., 144A
6.625%, 10/01/30@
700 778,750
Lithia Motors, Inc., 144A
4.375%, 01/15/31@
700 750,750
Murphy Oil USA, Inc.
5.625%, 05/01/27
1,050 1,110,375
New Red Finance, Inc., 144A
4.250%, 05/15/24@
516 526,320
 
76


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
High Yield Bond Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Retail — (continued)
QVC, Inc.
4.750%, 02/15/27
$ 750 $ 804,375
White Cap Buyer LLC, 144A
6.875%, 10/15/28@
700 746,375
Yum! Brands, Inc.    
144A, 7.750%, 04/01/25@ 1,200 1,329,000
144A, 4.750%, 01/15/30@ 700 767,550
    12,726,055
Semiconductors — 0.7%
Sensata Technologies BV, 144A
5.625%, 11/01/24@
1,000 1,117,540
Software — 0.5%
ACI Worldwide, Inc., 144A
5.750%, 08/15/26@
750 793,125
Telecommunications — 5.2%
CommScope, Inc., 144A
7.125%, 07/01/28@
700 745,500
Connect Finco SARL/Connect US Finco LLC, 144A
6.750%, 10/01/26@
1,050 1,131,060
Frontier Communications Corp.    
144A, 5.875%, 10/15/27@ 700 756,875
144A, 6.750%, 05/01/29@ 1,050 1,123,500
Hughes Satellite Systems Corp.
5.250%, 08/01/26
1,000 1,103,750
Level 3 Financing, Inc., 144A
4.625%, 09/15/27@
1,050 1,096,656
Telesat Canada/Telesat LLC, 144A
4.875%, 06/01/27@
700 724,500
ViaSat, Inc.    
144A, 5.625%, 04/15/27@ 1,050 1,102,500
144A, 6.500%, 07/15/28@ 875 946,934
    8,731,275
Transportation — 0.4%
Cargo Aircraft Management, Inc., 144A
4.750%, 02/01/28@
700 721,875
TOTAL CORPORATE BONDS
(Cost $140,181,820)
  149,339,950
LOAN AGREEMENTS‡ — 0.9%
Insurance — 0.9%
Asurion LLC (1 M ICE LIBOR + 6.500%)
6.647%, 08/04/25•
(Cost $1,404,351)
1,404 1,413,171
    
  Number of
Shares
Value†
SHORT-TERM INVESTMENTS — 5.1%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $8,537,685)
8,537,685 $ 8,537,685
TOTAL INVESTMENTS — 97.2%
(Cost $153,378,867)
  $ 162,625,660
Other Assets & Liabilities — 2.8% 4,765,795
TOTAL NET ASSETS — 100.0%   $ 167,391,455

See Security Valuation Note.
@ Security exempt from registration under Rule 144A of the Securities Act of 1933, as amended. At December 31, 2020, the aggregate value of Rule 144A securities was $113,427,096, which represents 67.8% of the Fund’s net assets.
Variable rate security. The rate disclosed is the rate in effect on the report date. The information in parenthesis represents the benchmark and reference rate for each relevant security and the rate floats based upon the reference rate and spread. The security may be further subject to interest rate floors and caps. For loan agreements, the rate shown may represent a weighted average interest rate. Certain variable rate securities are not based on a published reference rate and spread, but are determined by the issuer or agent and are based on current market conditions, or, for mortgage-backed securities, are impacted by the individual mortgages which are paying off over time. These securities do not indicate a reference rate and spread in their descriptions.
(1) The value of this security was determined using significant unobservable inputs and is reported as a Level 3 security in the Valuation Hierarchy table located at the end of the Schedule of Investments.
* Non-income producing security.
µ Perpetual security with no stated maturity date.
Loan Agreements in which the Fund invests generally pay interest at rates which are periodically predetermined by reference to a base lending rate plus a premium. These base lending rates are generally (i) the Prime Rate offered by one or more major U.S. banks, (ii) the lending rate offered by one or more European banks such as the London Interbank Offered Rate (“LIBOR”) or (iii) the Certificate of Deposit rate. Rate shown represents the actual rate at December 31, 2020. Loan Agreements, while exempt from registration under the Security Act of 1933, as amended (the “1933 Act”), contain certain restrictions on resale and cannot be sold publicly. Floating rate Loan Agreements often require repayments from excess cash flow or permit the borrower to repay at its election. The degree to which borrowers repay, whether as a contractual requirement or at their election, cannot be predicted with accuracy. As a result, the actual remaining maturity may be substantially less than the stated maturity shown.
CLO— Collateralized Loan Obligation.
CMT— Constant Maturity Treasury.
CONV— Convertible Security.
 
77


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
High Yield Bond Fund
ICE— Intercontinental Exchange.
LIBOR— London Interbank Offered Rate.
LLC— Limited Liability Company.
LP— Limited Partnership.
M— Month.
S.A.— Societe Anonyme.
UST— US Treasury.
Yr— Year.
Country Weightings as of 12/31/2020††
United States 96%
Canada 2
Netherlands 1
Cayman Islands 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Asset Backed Securities $ 1,509,036 $ $ 1,509,036 $—
Common Stocks 614,556 614,556
Preferred Stocks 1,211,262 1,211,262
Corporate Bonds 149,339,950 149,339,950
Loan Agreements 1,413,171 1,413,171
Short-Term Investments 8,537,685 8,537,685
Total Investments $ 162,625,660 $ 10,363,503 $ 152,262,157 $
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Other Financial Instruments(1)        
Futures Contracts $ 31,835 $ 31,835 $ $—
Total Assets—Other Financial Instruments $ 31,835 $ 31,835 $ $
LIABILITIES TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Other Financial Instruments(1)        
Futures Contracts $(45,081) $(45,081) $— $—
Total Liabilities—Other Financial Instruments $ (45,081) $ (45,081) $ $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
 
Futures contracts held by the Fund at December 31, 2020 are as follows:
Futures Contracts:
Exchange Traded
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Long   U.S. Treasury 5 Year Note   03/31/2021   296   1,000   $126   $37,344,563   $31,835   $—
                            $31,835   $—
 
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Short   US Treasury Ultra Bond   03/22/2021   (40)   1,000   $214   $(8,542,500)   $   $(45,081)
                            $   $(45,081)
                            $31,835   $(45,081)
The accompanying notes are an integral part of these financial statements.
78


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Flexibly Managed Fund
  Par
(000)
Value†
ASSET BACKED SECURITIES — 0.4%
Continental Airlines Pass Through Trust, Series 2012-1, Class A,
4.150%, 10/11/25
$ 1,394 $ 1,403,126
Domino's Pizza Master Issuer LLC,    
Series 2017-1A A23, 144A, 4.118%, 07/25/47@ 4,864 5,211,393
Series 2018-1A A2I, 144A, 4.116%, 07/25/48@ 4,570 4,798,669
Series 2019-1A A2, 144A, 3.668%, 10/25/49@ 2,193 2,329,267
Wendy's Funding LLC, Series 2018-1A A2I, 144A
3.573%, 03/15/48@
3,115 3,210,726
TOTAL ASSET BACKED SECURITIES
(Cost $16,025,014)
16,953,181
  Number of
Shares
 
COMMON STOCKS — 67.4%
Aerospace & Defense — 0.4%
Teledyne Technologies, Inc.* 48,096 18,852,670
Banks — 5.7%
Bank of America Corp. 3,530,519 107,010,031
Huntington Bancshares, Inc. 459,594 5,804,672
The PNC Financial Services Group, Inc. 1,113,444 165,903,156
    278,717,859
Beverages — 1.6%
Keurig Dr Pepper, Inc. 2,438,530 78,032,960
Commercial Services — 2.5%
Global Payments, Inc. 569,105 122,596,599
Diversified Financial Services — 5.0%
CME Group, Inc. 145,768 26,537,065
Intercontinental Exchange, Inc. 415,366 47,887,546
Mastercard, Inc., Class A 103,232 36,847,630
Visa, Inc., Class A 615,634 134,657,625
    245,929,866
Electric — 7.0%
Ameren Corp. 996,514 77,787,883
American Electric Power Co., Inc. 1,707,492 142,182,859
Exelon Corp. 1,415,625 59,767,687
Public Service Enterprise Group, Inc. 1,057,559 61,655,690
    341,394,119
Electronics — 2.9%
PerkinElmer, Inc. 206,218 29,592,283
Roper Technologies, Inc. 94,800 40,867,332
TE Connectivity Ltd. 577,007 69,858,238
    140,317,853
Environmental Control — 0.6%
Waste Connections, Inc. 286,805 29,417,589
  Number of
Shares
Value†
 
Gas — 1.2%
NiSource, Inc. 2,438,153 $ 55,931,230
Healthcare Products — 4.2%
Boston Scientific Corp.* 445,352 16,010,404
Danaher Corp. 384,589 85,432,601
Envista Holdings Corp.* 1,307,564 44,104,134
Thermo Fisher Scientific, Inc. 131,640 61,315,279
    206,862,418
Healthcare Services — 4.7%
Humana, Inc. 315,143 129,293,719
UnitedHealth Group, Inc. 288,459 101,156,802
    230,450,521
Insurance — 3.6%
Arthur J. Gallagher & Co. 217,096 26,856,946
Marsh & McLennan Cos., Inc. 1,258,972 147,299,724
    174,156,670
Internet — 8.1%
Alphabet, Inc., Class A* 7,202 12,622,513
Alphabet, Inc., Class C* 93,198 163,271,712
Amazon.com, Inc.* 55,437 180,554,429
Facebook, Inc., Class A* 150,210 41,031,364
    397,480,018
Lodging — 1.6%
Hilton Worldwide Holdings, Inc. 317,545 35,330,057
Marriott International, Inc., Class A 340,804 44,958,863
    80,288,920
Machinery — Diversified — 1.0%
Ingersoll Rand, Inc.* 1,056,715 48,143,935
Miscellaneous Manufacturing — 3.6%
General Electric Co. 16,141,936 174,332,909
Pharmaceuticals — 0.3%
Becton Dickinson and Co. 65,200 16,314,344
Retail — 2.7%
Ross Stores, Inc. 280,410 34,437,152
Yum! Brands, Inc. 903,745 98,110,557
    132,547,709
Semiconductors — 1.8%
NXP Semiconductors N.V. 549,534 87,381,401
Software — 8.9%
Fiserv, Inc.* 1,270,138 144,617,912
Microsoft Corp. 1,137,585 253,021,656
salesforce.com, Inc.* 161,700 35,983,101
    433,622,669
TOTAL COMMON STOCKS
(Cost $2,503,723,608)
3,292,772,259
 
79


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Flexibly Managed Fund
  Number of
Shares
Value†
PREFERRED STOCKS — 2.7%
Auto Manufacturers — 0.4%
Waymo LLC, Series A-2, CONV(1),*,# 245,568 $ 21,086,236
Diversified Financial Services — 0.0%
The Charles Schwab Corp., Series D 12,000 312,480
Electric — 1.2%
Alabama Power Co., Series A 55,754 1,558,324
American Electric Power Co., Inc., CONV 132,344 6,630,434
CMS Energy Corp., 2078 434,600 12,342,640
CMS Energy Corp., 2079 577,700 16,123,607
DTE Energy Co., Series E 295,483 8,037,138
Duke Energy Corp. 266,780 7,675,261
SCE Trust III, Series H (3 M ICE LIBOR + 2.990%) 8,337 204,256
SCE Trust IV, Series J (3 M ICE LIBOR + 3.132%) 311,544 7,545,596
    60,117,256
Gas — 0.2%
NiSource, Inc., Series B (UST Yield Curve CMT 5 Yr + 3.632%) 293,640 8,365,804
Healthcare Products — 0.8%
Avantor, Inc., Series A, CONV 252,536 22,452,976
Boston Scientific Corp., Series A, CONV 135,006 14,792,607
    37,245,583
Internet — 0.1%
Aurora Innovation, Inc., Series B, CONV(1),*,# 354,540 6,969,109
TOTAL PREFERRED STOCKS
(Cost $113,644,385)
  134,096,468
  Par
(000)
 
CORPORATE BONDS — 9.1%
Airlines — 0.4%
Delta Air Lines, Inc./SkyMiles IP Ltd.    
144A, 4.500%, 10/20/25@ $ 7,490 8,005,755
144A, 4.750%, 10/20/28@ 4,165 4,546,149
Mileage Plus Holdings LLC/Mileage Plus Intellectual Property Assets Ltd., 144A
6.500%, 06/20/27@
4,500 4,837,500
U.S. Airways Pass Through Trust,    
Series 2012-2 Class B, 6.750%, 12/03/22 341 331,612
Series 2013-1 Class B, 5.375%, 05/15/23 4 3,209
Series 2010-1 Class A, 6.250%, 10/22/24 955 911,618
  Par
(000)
Value†
 
Airlines — (continued)
Series 2012-2 Class A, 4.625%, 12/03/26 $ 155 $ 138,364
Series 2013-1 Class B, 3.950%, 05/15/27 3 2,686
    18,776,893
Banks — 0.3%
State Street Corp., Series F (3 M ICE LIBOR + 3.597%)
3.813%µ,•
4,360 4,338,200
The Bank of New York Mellon Corp., Series E (3 M ICE LIBOR + 3.420%)
3.659%µ,•
5,000 5,005,150
The PNC Financial Services Group, Inc., Series S (3 M ICE LIBOR + 3.300%)
5.000%µ,•
5,235 5,719,238
    15,062,588
Building Materials — 0.0%
Lennox International, Inc.
3.000%, 11/15/23
760 801,040
Commercial Services — 0.3%
Korn Ferry, 144A
4.625%, 12/15/27@
1,405 1,461,200
Refinitiv US Holdings, Inc.    
144A, 6.250%, 05/15/26@ 5,610 5,988,675
144A, 8.250%, 11/15/26@ 6,535 7,131,319
    14,581,194
Entertainment — 1.3%
Cedar Fair LP
5.250%, 07/15/29
8,321 8,566,886
Cedar Fair LP/Canada's Wonderland Co./Magnum Management Corp.    
5.375%, 06/01/24 11,251 11,279,128
144A, 5.500%, 05/01/25@ 380 396,150
5.375%, 04/15/27 7,825 8,001,063
144A, 6.500%, 10/01/28@ 6,445 6,988,958
Six Flags Entertainment Corp.    
144A, 4.875%, 07/31/24@ 14,158 14,170,317
144A, 5.500%, 04/15/27@ 11,079 11,383,672
Six Flags Theme Parks, Inc., 144A
7.000%, 07/01/25@
4,774 5,155,920
    65,942,094
Gas — 0.1%
NiSource, Inc. (UST Yield Curve CMT 5 Yr + 2.843%)
5.650%µ,•
5,825 5,985,188
Healthcare Products — 0.1%
Teleflex, Inc.    
4.875%, 06/01/26 4,245 4,420,276
 
80


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Flexibly Managed Fund
  Par
(000)
Value†
CORPORATE BONDS — (continued)
Healthcare Products — (continued)
4.625%, 11/15/27 $ 2,880 $ 3,095,165
    7,515,441
Insurance — 0.3%
AmWINS Group, Inc., 144A
7.750%, 07/01/26@
335 359,757
HUB International Ltd., 144A
7.000%, 05/01/26@
9,722 10,167,170
USI, Inc., 144A
6.875%, 05/01/25@
3,789 3,883,725
    14,410,652
Internet — 1.9%
Netflix, Inc.    
5.500%, 02/15/22 1,100 1,150,875
5.875%, 02/15/25 6,510 7,489,559
4.375%, 11/15/26 15,365 17,035,944
4.875%, 04/15/28 17,923 20,211,767
5.875%, 11/15/28 25,165 30,166,544
6.375%, 05/15/29 13,850 17,104,750
    93,159,439
Lodging — 0.1%
Marriott International, Inc.    
(3 M ICE LIBOR + 0.650%), 0.876%, 03/08/21• 1,435 1,435,544
3.125%, 06/15/26 1,290 1,376,376
    2,811,920
Machinery — Diversified — 0.1%
Welbilt, Inc.
9.500%, 02/15/24
3,543 3,661,832
Xylem, Inc.
4.875%, 10/01/21
415 428,407
    4,090,239
Media — 1.0%
CCO Holdings LLC/CCO Holdings Capital Corp.    
144A, 4.000%, 03/01/23@ 5,250 5,282,812
144A, 5.125%, 05/01/27@ 15,425 16,368,856
144A, 5.000%, 02/01/28@ 22,611 23,911,132
Liberty Broadband Corp., 144A
2.750%, 09/30/50@
2,061 2,204,780
Sirius XM Radio, Inc., 144A
3.875%, 08/01/22@
630 639,450
    48,407,030
Miscellaneous Manufacturing — 0.6%
General Electric Co., Series D (3 M ICE LIBOR + 3.330%)
5.000%µ,•
32,300 30,047,075
Packaging and Containers — 0.0%
Reynolds Group Issuer, Inc., 144A
5.125%, 07/15/23@
154 155,894
  Par
(000)
Value†
 
Pharmaceuticals — 0.1%
Elanco Animal Health, Inc.
4.912%, 08/27/21
$ 4,820 $ 4,928,450
Real Estate Investment Trusts — 0.3%
SBA Communications Corp.    
4.000%, 10/01/22 8,045 8,125,450
4.875%, 09/01/24 4,175 4,282,423
144A, 3.875%, 02/15/27 2,085 2,189,875
    14,597,748
Retail — 1.3%
KFC Holding Co./Pizza Hut Holdings LLC/Taco Bell of America LLC    
144A, 5.250%, 06/01/26@ 12,598 13,070,425
144A, 4.750%, 06/01/27@ 16,795 17,735,688
Yum! Brands, Inc.    
3.750%, 11/01/21 11,215 11,327,150
3.875%, 11/01/23 4,905 5,131,856
144A, 4.750%, 01/15/30@ 1,300 1,425,450
6.875%, 11/15/37 3,540 4,548,900
5.350%, 11/01/43 8,185 9,249,050
    62,488,519
Semiconductors — 0.2%
Sensata Technologies BV    
144A, 4.875%, 10/15/23@ 2,595 2,799,356
144A, 5.625%, 11/01/24@ 880 983,435
144A, 5.000%, 10/01/25@ 3,150 3,504,375
Sensata Technologies UK Financing Co. PLC, 144A
6.250%, 02/15/26@
2,000 2,078,750
    9,365,916
Software — 0.6%
Solera LLC/Solera Finance, Inc., 144A
10.500%, 03/01/24@
29,706 30,782,842
Telecommunications — 0.1%
T-Mobile USA, Inc.    
6.000%, 03/01/23 1,770 1,772,213
6.500%, 01/15/26 845 874,575
    2,646,788
TOTAL CORPORATE BONDS
(Cost $413,678,881)
  446,556,950
LOAN AGREEMENTS‡ — 11.2%
Airlines — 0.7%
Delta Air Lines, Inc. (3 M ICE LIBOR + 3.750%)
4.750%, 10/20/27•
10,040 10,394,814
Mileage Plus Holdings LLC (3 M ICE LIBOR + 5.250%)
6.250%, 06/21/27•
22,985 23,890,149
    34,284,963
 
81


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Flexibly Managed Fund
  Par
(000)
Value†
LOAN AGREEMENTS‡ — (continued)
Chemicals — 0.0%
HB Fuller Co. (1 M ICE LIBOR + 2.000%)
2.152%, 10/20/24•
$ 1,317 $ 1,307,077
Commercial Services — 2.2%
Financial & Risk US Holdings, Inc. (1 M ICE LIBOR + 3.250%)
3.397%, 10/01/25•
107,896 107,671,858
Cosmetics & Personal Care — 0.3%
Sunshine Luxembourg VII Sarl (3 M ICE LIBOR + 4.000%)
4.220%, 10/01/26•
13,908 13,933,661
Entertainment — 0.4%
Alpha Topco. Ltd. - Delta 2 (Lux) Sarl (1 M ICE LIBOR + 2.500%)
3.500%, 02/01/24•
19,740 19,500,356
SeaWorld Parks & Entertainment, Inc. (1 M ICE LIBOR + 3.000%)
3.750%, 03/31/24•
2,528 2,452,580
    21,952,936
Environmental Control — 0.2%
Filtration Group Corp.    
0.000%, 03/29/25× 5,630 6,837,035
(1 M ICE LIBOR + 3.750%), 4.500%, 03/29/25• 1,062 1,062,338
(3 M ICE LIBOR + 3.000%), 3.147%, 03/31/25• 1,682 1,661,842
    9,561,215
Healthcare Products — 0.0%
CPI Holdco LLC (1 M ICE LIBOR + 4.250%)
4.397%, 11/04/26(1),•
1,251 1,250,550
Healthcare Services — 0.5%
ADMI Corp.
0.000%, 12/15/27×
4,535 4,533,866
Dentalcorp Perfect Smile ULC (1 M ICE LIBOR + 3.750%)
4.750%, 06/06/25•
1,117 1,096,190
Heartland Dental LLC    
(1 M ICE LIBOR + 3.500%), 3.647%, 04/30/25• 6,611 6,439,363
(1 M ICE LIBOR + 4.500%), 4.647%, 04/30/25• 613 598,870
Loire US Holdco 1, Inc. (1 M ICE LIBOR + 3.500%)
3.647%, 04/21/27•
12,403 12,154,698
    24,822,987
Household Products & Wares — 0.0%
Prestige Brands, Inc. (1 M ICE LIBOR + 2.000%)
2.147%, 01/26/24•
183 183,391
  Par
(000)
Value†
 
Insurance — 3.0%
Alliant Holdings Intermediate LLC    
(1 M ICE LIBOR + 3.250%), 3.397%, 05/09/25• $ 4,311 $ 4,239,033
(1 M ICE LIBOR + 3.250%), 3.397%, 05/09/25• 3,532 3,468,953
(1 M ICE LIBOR + 3.750%), 4.250%, 11/05/27• 4,879 4,875,972
AmWINS Group, Inc. (1 M ICE LIBOR + 6.750%)
3.750%, 01/25/24•
2,264 2,259,044
HIG Finance 2 Limited
0.000%, 11/12/27×
4,830 4,815,414
HUB International Ltd.    
(3 M ICE LIBOR + 2.750%), 2.965%, 04/25/25• 66,689 65,418,160
(3 M ICE LIBOR + 4.000%), 5.000%, 04/25/25• 28,313 28,357,049
Ryan Specialty Group LLC (1 M ICE LIBOR + 3.250%)
4.000%, 09/01/27•
2,588 2,578,805
USI, Inc.    
(3 M ICE LIBOR + 3.000%), 3.254%, 05/16/24• 19,141 18,849,969
(3 M ICE LIBOR + 4.000%), 4.254%, 12/02/26• 5,480 5,462,834
(3 M ICE LIBOR + 4.000%), 4.500%, 12/02/26• 4,314 4,300,727
    144,625,960
Leisure Time — 0.2%
Life Time, Inc. (3 M ICE LIBOR + 2.750%)
3.750%, 06/10/22•
8,880 8,618,170
Lodging — 0.1%
Four Seasons Hotels Ltd. (3 M ICE LIBOR + 2.000%)
2.147%, 11/30/23•
3,059 3,034,852
Machinery — Diversified — 0.4%
Gardner Denver, Inc. (1 M ICE LIBOR + 2.750%)
2.897%, 03/01/27•
1,224 1,222,626
Vertical Midco Gmbh (6 M ICE LIBOR + 4.250%)
4.567%, 07/30/27•
16,509 16,564,589
Welbilt, Inc. (1 M ICE LIBOR + 2.500%)
2.645%, 10/23/25•
1,825 1,724,625
    19,511,840
Pharmaceuticals — 0.3%
NVA Holdings, Inc. (1 M ICE LIBOR + 2.250%)
2.438%, 01/01/30•
9,100 8,918,000
 
82


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Flexibly Managed Fund
  Par
(000)
Value†
LOAN AGREEMENTS‡ — (continued)
Pharmaceuticals — (continued)
Pearl Intermediate Parent LLC (1 M ICE LIBOR + 2.750%)
2.897%, 02/14/25•
$ 1,076 $ 1,050,800
PetVet Care Centers LLC    
(1 M ICE LIBOR + 3.250%), 3.397%, 02/14/25• 1,769 1,743,354
(1 M ICE LIBOR + 4.250%), 5.250%, 02/14/25• 1,677 1,678,733
    13,390,887
Retail — 0.1%
IRB Holding Corp. (3 M ICE LIBOR + 3.250%)
4.250%, 12/15/27•
4,110 4,111,274
Woof Holdings, Inc. (3 M ICE LIBOR + 3.750%)
4.500%, 12/21/27•
1,675 1,671,095
    5,782,369
Software — 2.8%
Applied Systems, Inc. (3 M ICE LIBOR + 3.000%)
4.000%, 09/19/24•
2,140 2,137,807
Ascend Learning LLC
0.000%, 07/12/24×
374 371,696
Azalea Topco, Inc. (3 M ICE LIBOR + 4.000%)
4.750%, 07/24/26•
1,960 1,955,100
Azalea TopCo, Inc. (3 M ICE LIBOR + 3.500%)
3.714%, 07/27/26•
12,064 11,897,967
Camelot US Acquisition I Co. (1 M ICE LIBOR + 3.000%)
4.000%, 10/30/26•
10,550 10,540,083
Cypress Intermediate Holdings III, Inc. (1 M ICE LIBOR + 3.000%)
4.000%, 04/29/24•
47,898 47,718,217
The Ultimate Software Group, Inc.    
(1 M ICE LIBOR + 3.750%), 3.897%, 05/04/26• 1,743 1,740,219
(3 M ICE LIBOR + 4.000%), 4.750%, 05/04/26• 57,466 57,720,549
(3 M ICE LIBOR + 6.750%), 7.500%, 05/03/27• 1,825 1,872,906
    135,954,544
Telecommunications — 0.0%
Eagle Broadband Investments LLC (3 M ICE LIBOR + 3.000%)
3.750%, 11/12/27•
1,520 1,517,158
TOTAL LOAN AGREEMENTS
(Cost $542,607,427)
  547,404,418
    
  Number of
Shares
Value†
SHORT-TERM INVESTMENTS — 10.6%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%) 20,649,785 $ 20,649,785
T. Rowe Price Government Reserve Investment Fund (seven-day effective yield 0.080%) 498,364,209 498,364,209
TOTAL SHORT-TERM INVESTMENTS
(Cost $519,013,994)
  519,013,994
TOTAL INVESTMENTS — 101.4%
(Cost $4,108,693,309)
  $ 4,956,797,270
Other Assets & Liabilities — (1.4)% (70,441,893)
TOTAL NET ASSETS — 100.0%   $ 4,886,355,377
  Number of
Contracts
 
WRITTEN OPTIONS — (1.2)%
Call Options    
TOTAL WRITTEN OPTIONS    
(See open written options schedule)
(Premiums $(30,759,176)) (71,877) $ (57,303,523)

See Security Valuation Note.
@ Security exempt from registration under Rule 144A of the Securities Act of 1933, as amended. At December 31, 2020, the aggregate value of Rule 144A securities was $220,969,567, which represents 4.5% of the Fund’s net assets.
* Non-income producing security.
(1) The value of this security was determined using significant unobservable inputs and is reported as a Level 3 security in the Valuation Hierarchy table located at the end of the Schedule of Investments.
# Restricted Security. These investments are in securities not registered under the Securities Act of 1933, as amended, and have certain restrictions on resale which may limit their liquidity. At December 31, 2020, the aggregate value of restricted securities was $28,055,345 which represented 0.6% of the Fund's net assets. The Fund has various registration rights (exercisable under a variety of circumstances) with respect to these securities.
Investment Date of
Acquisition
Cost   Value
Aurora Innovation, Inc., Series B 3/1/2019 $ 3,276,056   $ 6,969,109
Waymo LLC, Series A-2 5/8/2020 21,086,237   21,086,236
Total   $24,362,293   $28,055,345
 
83


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Flexibly Managed Fund
µ Perpetual security with no stated maturity date.
Variable rate security. The rate disclosed is the rate in effect on the report date. The information in parenthesis represents the benchmark and reference rate for each relevant security and the rate floats based upon the reference rate and spread. The security may be further subject to interest rate floors and caps. For loan agreements, the rate shown may represent a weighted average interest rate. Certain variable rate securities are not based on a published reference rate and spread, but are determined by the issuer or agent and are based on current market conditions, or, for mortgage-backed securities, are impacted by the individual mortgages which are paying off over time. These securities do not indicate a reference rate and spread in their descriptions.
Loan Agreements in which the Fund invests generally pay interest at rates which are periodically predetermined by reference to a base lending rate plus a premium. These base lending rates are generally (i) the Prime Rate offered by one or more major U.S. banks, (ii) the lending rate offered by one or more European banks such as the London Interbank Offered Rate (“LIBOR”) or (iii) the Certificate of Deposit rate. Rate shown represents the actual rate at December 31, 2020. Loan Agreements, while exempt from registration under the Security Act of 1933, as amended (the “1933 Act”), contain certain restrictions on resale and cannot be sold publicly. Floating rate Loan Agreements often require repayments from excess cash flow or permit the borrower to repay at its election. The degree to which borrowers repay, whether as a contractual requirement or at their election, cannot be predicted with accuracy. As a result, the actual remaining maturity may be substantially less than the stated maturity shown.
× This loan will settle after December 31, 2020, at which time the interest rate, based on the LIBOR and the agreed upon spread on trade date, will be reflected.
CMT— Constant Maturity Treasury.
CONV— Convertible Security.
ICE— Intercontinental Exchange.
LIBOR— London Interbank Offered Rate.
LLC— Limited Liability Company.
LP— Limited Partnership.
M— Month.
N.V.— Naamloze Vennootschap.
PLC— Public Limited Company.
UST— US Treasury.
Yr— Year.
Country Weightings as of 12/31/2020††
United States 95%
Netherlands 2
Switzerland 2
Luxembourg 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Asset Backed Securities $ 16,953,181 $ $ 16,953,181 $
Common Stocks 3,292,772,259 3,292,772,259
Preferred Stocks        
Auto Manufacturers 21,086,236 21,086,236
Diversified Financial Services 312,480 312,480
Electric 60,117,256 60,117,256
Gas 8,365,804 8,365,804
Healthcare Products 37,245,583 37,245,583
Internet 6,969,109 6,969,109
Total Preferred Stocks 134,096,468 106,041,123 28,055,345
Corporate Bonds 446,556,950 446,556,950
Loan Agreements 547,404,418 546,153,868 1,250,550
Short-Term Investments 519,013,994 519,013,994
Total Investments $ 4,956,797,270 $ 3,917,827,376 $ 1,009,663,999 $ 29,305,895
LIABILITIES TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Other Financial Instruments(1)        
Written Options $(57,303,523) $(57,293,085) $(10,438) $—
Total Liabilities—Other Financial Instruments $ (57,303,523) $ (57,293,085) $ (10,438) $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
 
84


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Flexibly Managed Fund
Open written options contracts held by the Fund at December 31, 2020 are as follows:
Open Written Options
Exchange Traded
Call Options                    
Description   # of
Contracts
  Notional   Exercise
Price
  Expiration
Date
  Value
Alphabet, Inc.   (82)   $ 12,300,000   $ 1,500   1/15/2021   $ (2,038,520)
Alphabet, Inc.   (24)   4,176,000   1,740   1/15/2021   (100,800)
Alphabet, Inc.   (24)   4,224,000   1,760   1/15/2021   (70,080)
Alphabet, Inc.   (24)   4,272,000   1,780   1/15/2021   (53,040)
Alphabet, Inc.   (24)   4,320,000   1,800   1/15/2021   (39,600)
Alphabet, Inc.   (50)   8,800,000   1,760   1/21/2022   (1,095,800)
Alphabet, Inc.   (50)   8,900,000   1,780   1/21/2022   (1,036,500)
Alphabet, Inc.   (50)   9,000,000   1,800   1/21/2022   (1,006,000)
Amazon.com, Inc.   (23)   8,740,000   3,800   1/21/2022   (624,680)
Amazon.com, Inc.   (32)   12,480,000   3,900   1/21/2022   (784,704)
Amazon.com, Inc.   (46)   18,400,000   4,000   1/21/2022   (1,017,612)
Amazon.com, Inc.   (23)   9,430,000   4,100   1/21/2022   (459,586)
Amazon.com, Inc.   (23)   9,660,000   4,200   1/21/2022   (412,850)
Amazon.com, Inc.   (25)   10,750,000   4,300   1/21/2022   (402,400)
American Electric Power Co., Inc.   (1,180)   12,390,000   105   1/15/2021   (7,080)
American Electric Power Co., Inc.   (354)   4,071,000   115   1/15/2021   (1,770)
American Electric Power Co., Inc.   (868)   7,812,000   90   1/21/2022   (286,440)
American Electric Power Co., Inc.   (1,061)   10,079,500   95   1/21/2022   (198,407)
Bank of America Corp.   (7,167)   21,501,000   30   1/21/2022   (2,830,965)
Bank of America Corp.   (1,398)   4,473,600   32   1/21/2022   (426,390)
Bank of America Corp.   (2,797)   9,789,500   35   1/21/2022   (587,370)
Becton Dickinson & Co.   (397)   11,910,000   300   1/15/2021   (1,588)
Becton Dickinson & Co.   (73)   1,898,000   260   1/15/2021   (9,855)
Becton Dickinson & Co.   (73)   1,971,000   270   1/15/2021   (2,336)
Becton Dickinson & Co.   (109)   3,052,000   280   1/15/2021   (545)
Danaher Corp.   (433)   10,825,000   250   1/21/2022   (707,955)
Facebook, Inc.   (205)   5,432,500   265   1/15/2021   (255,225)
Facebook, Inc.   (205)   5,535,000   270   1/15/2021   (190,650)
Facebook, Inc.   (205)   5,637,500   275   1/15/2021   (135,300)
Facebook, Inc.   (146)   2,847,000   195   1/15/2021   (1,130,040)
Facebook, Inc.   (146)   2,920,000   200   1/15/2021   (1,051,200)
Facebook, Inc.   (535)   21,400,000   400   1/21/2022   (433,350)
Facebook, Inc.   (60)   2,280,000   380   1/21/2022   (63,900)
General Electric Co.   (20,691)   31,036,500   15   1/15/2021   (20,691)
General Electric Co.   (11,437)   9,149,600   8   1/15/2021   (3,225,234)
General Electric Co.   (7,784)   7,005,600   9   1/15/2021   (1,416,688)
Hilton Worldwide Holdings, Inc.   (106)   1,325,000   125   1/15/2021   (1,908)
Hilton Worldwide Holdings, Inc.   (106)   1,378,000   130   1/15/2021   (530)
Hilton Worldwide Holdings, Inc.   (37)   323,750   88   1/15/2021   (87,320)
Hilton Worldwide Holdings, Inc.   (37)   333,000   90   1/15/2021   (76,590)
Humana, Inc.   (72)   2,664,000   370   1/15/2021   (287,280)
Humana, Inc.   (72)   2,736,000   380   1/15/2021   (221,760)
Humana, Inc.   (54)   2,268,000   420   1/15/2021   (33,480)
Humana, Inc.   (54)   2,322,000   430   1/15/2021   (17,010)
Intercontinental Exchange, Inc.   (216)   2,160,000   100   1/15/2021   (311,040)
Intercontinental Exchange, Inc.   (216)   2,268,000   105   1/15/2021   (216,000)
Mastercard, Inc.   (316)   12,640,000   400   1/21/2022   (879,744)
Microsoft Corp.   (1,893)   31,234,500   165   1/15/2021   (10,515,615)
Microsoft Corp.   (2,100)   35,700,000   170   1/15/2021   (10,716,300)
Microsoft Corp.   (695)   19,460,000   280   1/21/2022   (567,815)
NXP Semiconductors N.V.   (1,171)   16,394,000   140   1/15/2021   (2,257,688)
NXP Semiconductors N.V.   (91)   1,137,500   125   1/15/2021   (299,390)
NXP Semiconductors N.V.   (248)   3,348,000   135   1/15/2021   (566,680)
85


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Flexibly Managed Fund
Call Options                    
Description   # of
Contracts
  Notional   Exercise
Price
  Expiration
Date
  Value
NXP Semiconductors N.V.   (248)   $ 3,596,000   $ 145   1/15/2021   $ (344,720)
Roper Technologies, Inc.   (87)   3,654,000   420   5/21/2021   (271,875)
Roper Technologies, Inc.   (104)   4,576,000   440   5/21/2021   (214,240)
Thermo Fisher Scientific, Inc.   (68)   2,516,000   370   1/15/2021   (635,800)
Thermo Fisher Scientific, Inc.   (68)   2,652,000   390   1/15/2021   (491,844)
UnitedHealth Group, Inc.   (443)   14,176,000   320   1/15/2021   (1,413,170)
UnitedHealth Group, Inc.   (72)   2,376,000   330   1/15/2021   (159,840)
Visa, Inc.   (639)   14,697,000   230   1/15/2021   (60,066)
Visa, Inc.   (639)   15,336,000   240   1/15/2021   (15,336)
Visa, Inc.   (476)   11,186,000   235   1/15/2021   (21,896)
Visa, Inc.   (73)   1,350,500   185   1/15/2021   (238,345)
Visa, Inc.   (73)   1,423,500   195   1/15/2021   (173,740)
Visa, Inc.   (146)   2,920,000   200   1/15/2021   (275,940)
Visa, Inc.   (510)   10,710,000   210   1/15/2021   (531,420)
Visa, Inc.   (183)   4,026,000   220   1/15/2021   (68,625)
Visa, Inc.   (111)   2,386,500   215   1/15/2021   (71,595)
Visa, Inc.   (292)   6,570,000   225   1/21/2022   (637,144)
Visa, Inc.   (292)   6,716,000   230   1/21/2022   (579,620)
Visa, Inc.   (604)   15,100,000   250   1/21/2022   (724,800)
Visa, Inc.   (142)   3,692,000   260   1/21/2022   (142,000)
Visa, Inc.   (142)   3,834,000   270   1/21/2022   (103,660)
Yum! Brands, Inc.   (218)   2,071,000   95   1/15/2021   (301,276)
Yum! Brands, Inc.   (579)   5,790,000   100   1/15/2021   (515,310)
Yum! Brands, Inc.   (360)   3,780,000   105   1/15/2021   (129,960)
Total Written Options                   $ (57,303,523)
The accompanying notes are an integral part of these financial statements.
86


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Balanced Fund
  Number of
Shares
Value†
AFFILIATED EQUITY FUNDS — 59.8%
Penn Series Index 500 Fund*
(Cost $22,601,770)
1,560,448 $ 50,418,091
AFFILIATED FIXED INCOME FUNDS — 39.3%
Penn Series Quality Bond Fund*
(Cost $27,749,479)
1,908,586 33,133,049
SHORT-TERM INVESTMENTS — 0.4%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $337,817)
337,817 337,817
TOTAL INVESTMENTS — 99.5%
(Cost $50,689,066)
  $ 83,888,957
Other Assets & Liabilities — 0.5% 458,773
TOTAL NET ASSETS — 100.0%   $ 84,347,730

See Security Valuation Note.
* Non-income producing security.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Affiliated Equity Funds $50,418,091 $50,418,091 $— $—
Affiliated Fixed Income Funds 33,133,049 33,133,049
Short-Term Investments 337,817 337,817
Total Investments $ 83,888,957 $ 83,888,957 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
87


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Growth Stock Fund
  Number of
Shares
Value†
COMMON STOCKS — 98.6%
Aerospace & Defense — 0.7%
Teledyne Technologies, Inc.* 6,853 $ 2,686,239
Apparel — 0.9%
NIKE, Inc., Class B 26,695 3,776,542
Auto Manufacturers — 1.9%
Cummins, Inc. 8,369 1,900,600
Ferrari N.V. 14,577 3,345,713
Tesla, Inc.* 3,301 2,329,417
    7,575,730
Auto Parts & Equipment — 0.5%
Aptiv PLC 14,390 1,874,873
Biotechnology — 1.4%
Argenx S.E., ADR* 1,476 434,077
Incyte Corp.* 16,508 1,435,866
Vertex Pharmaceuticals, Inc.* 15,381 3,635,145
    5,505,088
Chemicals — 0.4%
Linde PLC 5,519 1,454,312
Commercial Services — 5.4%
Avalara, Inc.* 9,559 1,576,183
Cintas Corp. 8,155 2,882,466
Equifax, Inc. 1,837 354,247
Global Payments, Inc. 21,198 4,566,473
PayPal Holdings, Inc.* 27,740 6,496,708
S&P Global, Inc. 6,327 2,079,875
StoneCo Ltd., Class A* 17,006 1,427,144
TransUnion 27,237 2,702,455
    22,085,551
Computers — 6.1%
Apple, Inc. 175,116 23,236,142
Crowdstrike Holdings, Inc., Class A* 7,478 1,583,990
    24,820,132
Diversified Financial Services — 6.1%
Ant Group Co. Ltd.(1),*,# 189,827 1,651,495
Mastercard, Inc., Class A 28,092 10,027,158
Tradeweb Markets, Inc., Class A 11,721 731,976
Visa, Inc., Class A 49,120 10,744,018
XP, Inc., Class A* 40,359 1,601,042
    24,755,689
Electronics — 1.7%
Fortive Corp. 32,467 2,299,313
Roper Technologies, Inc. 10,281 4,432,036
    6,731,349
Entertainment — 0.3%
DraftKings, Inc., Class A* 27,512 1,280,959
Healthcare Products — 3.1%
Align Technology, Inc.* 1,318 704,313
Avantor, Inc.* 32,991 928,697
Intuitive Surgical, Inc.* 6,983 5,712,792
  Number of
Shares
Value†
 
Healthcare Products — (continued)
Stryker Corp. 21,739 $ 5,326,924
    12,672,726
Healthcare Services — 4.3%
Anthem, Inc. 9,082 2,916,139
Centene Corp.* 36,341 2,181,550
HCA Healthcare, Inc. 17,989 2,958,471
Humana, Inc. 3,884 1,593,489
UnitedHealth Group, Inc. 22,821 8,002,868
    17,652,517
Insurance — 0.4%
Chubb Ltd. 10,587 1,629,551
Internet — 32.5%
Airbnb, Inc., Class A* 1,806 265,121
Airbnb, Inc., Class B*,> 27,386 3,819,252
Alibaba Group Holding Ltd., ADR* 38,486 8,956,847
Alphabet, Inc., Class A* 6,888 12,072,184
Alphabet, Inc., Class C* 5,875 10,292,295
Amazon.com, Inc.* 13,252 43,164,092
Booking Holdings, Inc.* 1,008 2,245,088
Doordash, Inc., Class A*,> 6,905 936,404
DoorDash, Inc., Class A* 1,458 208,129
Facebook, Inc., Class A* 73,544 20,089,279
Farfetch Ltd., Class A* 24,900 1,588,869
IAC* 315 59,645
Match Group, Inc.* 22,329 3,375,922
Netflix, Inc.* 17,324 9,367,607
Shopify, Inc., Class A* 1,453 1,644,723
Snap, Inc., Class A* 132,423 6,630,420
Spotify Technology S.A.* 9,587 3,016,645
Tencent Holdings Ltd. 47,300 3,403,415
Wix.com Ltd.* 2,600 649,896
    131,785,833
Lodging — 1.3%
Las Vegas Sands Corp. 29,800 1,776,080
Wynn Resorts Ltd. 31,893 3,598,487
    5,374,567
Miscellaneous Manufacturing — 0.6%
Parker-Hannifin Corp. 9,238 2,516,524
Pharmaceuticals — 1.1%
Cigna Corp. 21,163 4,405,713
Retail — 3.2%
Carvana Co.* 10,205 2,444,506
Chipotle Mexican Grill, Inc.* 1,917 2,658,323
JD Health International, Inc.* 6,050 117,060
Lululemon Athletica, Inc.* 8,781 3,056,051
Ross Stores, Inc. 39,836 4,892,259
    13,168,199
Semiconductors — 4.5%
Advanced Micro Devices, Inc.* 52,098 4,777,908
ASML Holding N.V. 10,414 5,079,116
 
88


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Growth Stock Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Semiconductors — (continued)
Marvell Technology Group Ltd. 45,301 $ 2,153,609
NVIDIA Corp. 6,885 3,595,347
Taiwan Semiconductor Manufacturing Co., Ltd., ADR 23,141 2,523,295
    18,129,275
Software — 20.7%
Activision Blizzard, Inc. 7,411 688,111
Adobe, Inc.* 4,143 2,071,997
Black Knight, Inc.* 11,000 971,850
Coupa Software, Inc.* 1,765 598,176
Datadog, Inc., Class A* 22,108 2,176,312
Fidelity National Information Services, Inc. 29,559 4,181,416
Fiserv, Inc.* 41,599 4,736,462
Intuit, Inc. 15,985 6,071,902
Microsoft Corp. 145,350 32,328,747
MSCI, Inc. 2,029 906,009
Paycom Software, Inc.* 5,106 2,309,189
salesforce.com, Inc.* 32,498 7,231,780
Sea Ltd., ADR* 34,418 6,850,903
ServiceNow, Inc.* 8,851 4,871,856
Slack Technologies, Inc., Class A* 56,019 2,366,243
Snowflake, Inc., Class A* 1,333 375,106
Snowflake, Inc., Class B*,> 807 215,735
Splunk, Inc.* 23,018 3,910,528
Stripe, Inc., Class B(1),*,# 8,608 135,060
Workday, Inc., Class A* 4,465 1,069,859
    84,067,241
Transportation — 1.5%
FedEx Corp. 13,916 3,612,872
Norfolk Southern Corp. 4,972 1,181,397
Union Pacific Corp. 5,913 1,231,205
    6,025,474
TOTAL COMMON STOCKS
(Cost $213,288,049)
399,974,084
PREFERRED STOCKS — 1.1%
Auto Manufacturers — 0.4%
Rivian Automotive, Series D, CONV(1),*,# 91,993 1,460,849
Waymo LLC, Series A-2, CONV(1),*,# 3,737 320,886
    1,781,735
Electronics — 0.1%
GM Cruise, Class F, CONV(1),*,# 27,200 496,400
Internet — 0.3%
Aurora Innovation, Inc., Series B, CONV(1),*,# 27,730 545,082
Xiaoju Kuaizhi, Inc. (didi), CONV(1),*,# 11,920 500,640
    1,045,722
  Number of
Shares
Value†
 
Real Estate — 0.0%
WeWork Companies, Inc., Series E, CONV(1),*,# 7,802 $ 0
Software — 0.3%
Magic Leap Inc., Series C, CONV(1),*,# 15,808 36,410
Magic Leap, Inc., Series D, CONV(1),*,# 10,934 29,522
Uipath, Inc., Series D-1, CONV(1),*,# 29,238 850,601
Uipath, Inc., Series D-2, CONV(1),*,# 4,911 142,872
    1,059,405
TOTAL PREFERRED STOCKS
(Cost $3,752,681)
  4,383,262
     
SHORT-TERM INVESTMENTS — 0.1%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%) 560,283 560,283
T. Rowe Price Government Reserve Investment Fund (seven-day effective yield 0.080%) 114 114
TOTAL SHORT-TERM INVESTMENTS
(Cost $560,397)
  560,397
TOTAL INVESTMENTS — 99.8%
(Cost $217,601,127)
  $ 404,917,743
Other Assets & Liabilities — 0.2% 868,971
TOTAL NET ASSETS — 100.0%   $ 405,786,714

See Security Valuation Note.
* Non-income producing security.
(1) The value of this security was determined using significant unobservable inputs and is reported as a Level 3 security in the Valuation Hierarchy table located at the end of the Schedule of Investments.
# Restricted Security. These investments are in securities not registered under the Securities Act of 1933, as amended, and have certain restrictions on resale which may limit their liquidity. At December 31, 2020, the aggregate value of restricted securities was $6,169,817 which represented 1.5% of the Fund's net assets. The Fund has various registration rights (exercisable under a variety of circumstances) with respect to these securities.
Investment Date of
Acquisition
Cost Value
Ant Group Co. Ltd. 6/7/2018 $ 1,064,929 $ 1,651,495
Aurora Innovation, Inc., Series B 3/1/2019 256,234 545,082
GM Cruise, Class F 5/7/2019 496,400 496,400
Magic Leap Inc., Series C 1/20/2016 364,105 36,410
Magic Leap, Inc., Series D 10/12/2017 295,218 29,522
 
89


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Growth Stock Fund
Investment Date of
Acquisition
Cost   Value
Rivian Automotive, Series D 12/23/2019 $ 988,373   $1,460,849
Stripe, Inc., Class B 12/17/2019 135,060   135,060
Uipath, Inc., Series D-1 4/26/2019 383,522   850,601
Uipath, Inc., Series D-2 4/26/2019 64,419   142,872
Waymo LLC, Series A-2 5/8/2020 320,885   320,886
WeWork Companies, Inc., Series E 6/23/2015 256,605   0
Xiaoju Kuaizhi, Inc. (didi) 10/19/2015 326,920   500,640
Total   $4,952,670   $ 6,169,817
> Restricted Security. These investments are restricted due to a lock up provision which may limit their liquidity for 180 days after the effective date of registration under the Securities Act of 1933. At December 31, 2020, the aggregate value of restricted securities was $4,971,391 which represented 1.2% of the Fund's net assets. The Fund has various registration rights (exercisable under a variety of circumstances) with respect to these securities.
Investment Date of
Acquisition
Cost   Value
Airbnb, Inc., Class B 7/14/2015 $ 750,980   $3,819,252
Doordash, Inc., Class A 11/12/2019 261,972   936,404
Snowflake, Inc., Class B 3/17/2020 31,301   215,735
Total   $1,044,253   $ 4,971,391
ADR— American Depositary Receipt.
CONV— Convertible Security.
LLC— Limited Liability Company.
N.V.— Naamloze Vennootschap.
PLC— Public Limited Company.
S.A.— Societe Anonyme.
S.E.— Societas Europaea.
Country Weightings as of 12/31/2020††
United States 88%
China 3
Singapore 2
Netherlands 1
Canada 1
Italy 1
United Kingdom 1
Other 3
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Aerospace & Defense $ 2,686,239 $ 2,686,239 $ $
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Apparel $ 3,776,542 $ 3,776,542 $ $
Auto Manufacturers 7,575,730 7,575,730
Auto Parts & Equipment 1,874,873 1,874,873
Biotechnology 5,505,088 5,505,088
Chemicals 1,454,312 1,454,312
Commercial Services 22,085,551 22,085,551
Computers 24,820,132 24,820,132
Diversified Financial Services 24,755,689 23,104,194 1,651,495
Electronics 6,731,349 6,731,349
Entertainment 1,280,959 1,280,959
Healthcare Products 12,672,726 12,672,726
Healthcare Services 17,652,517 17,652,517
Insurance 1,629,551 1,629,551
Internet 131,785,833 123,626,762 8,159,071
Lodging 5,374,567 5,374,567
Miscellaneous Manufacturing 2,516,524 2,516,524
Pharmaceuticals 4,405,713 4,405,713
Retail 13,168,199 13,168,199
Semiconductors 18,129,275 18,129,275
Software 84,067,241 83,716,446 215,735 135,060
Transportation 6,025,474 6,025,474
Total Common Stocks 399,974,084 389,812,723 8,374,806 1,786,555
Preferred Stocks 4,383,262 4,383,262
Short-Term Investments 560,397 560,397
Total Investments $ 404,917,743 $ 390,373,120 $ 8,374,806 $ 6,169,817
Following is a reconciliation of Level 3 investments for which significant unobservable inputs were used to determine fair value:
  Investments in
Securities
(Market Value)
Balance as of 12/31/19 $ 6,782,797
Change in Appreciation/(Depreciation) 79,086
Purchases 320,886
Sales/Exchange (1,012,952)
Balance as of 12/31/20 $ 6,169,817
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
90


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Cap Growth Fund
  Number of
Shares
Value†
COMMON STOCKS — 99.6%
Apparel — 5.4%
adidas AG* 2,907 $ 1,057,581
LVMH Moet Hennessy Louis Vuitton S.E. 1,459 913,336
NIKE, Inc., Class B 8,380 1,185,519
VF Corp. 6,411 547,563
    3,703,999
Beverages — 1.9%
PepsiCo, Inc. 8,845 1,311,713
Chemicals — 1.4%
The Sherwin-Williams Co. 1,317 967,876
Commercial Services — 2.7%
Equifax, Inc. 4,372 843,097
Moody's Corp. 2,322 673,937
Verisk Analytics, Inc. 1,653 343,146
    1,860,180
Computers — 10.9%
Accenture PLC, Class A 11,002 2,873,833
Apple, Inc. 25,816 3,425,525
Cognizant Technology Solutions Corp., Class A 13,878 1,137,302
    7,436,660
Cosmetics & Personal Care — 4.4%
Colgate-Palmolive Co. 24,179 2,067,546
The Estee Lauder Cos., Inc., Class A 3,541 942,579
    3,010,125
Diversified Financial Services — 6.4%
Mastercard, Inc., Class A 451 160,980
The Charles Schwab Corp. 38,337 2,033,394
Visa, Inc., Class A 9,987 2,184,457
    4,378,831
Electronics — 7.1%
Agilent Technologies, Inc. 10,332 1,224,239
Amphenol Corp., Class A 11,634 1,521,378
Fortive Corp. 13,095 927,388
Mettler-Toledo International, Inc.* 128 145,879
TE Connectivity Ltd. 8,383 1,014,930
    4,833,814
Healthcare Products — 8.3%
Abbott Laboratories 6,523 714,203
Boston Scientific Corp.* 43,523 1,564,652
Danaher Corp. 2,098 466,050
Medtronic PLC 5,962 698,389
Stryker Corp. 5,531 1,355,316
Thermo Fisher Scientific, Inc. 1,903 886,379
    5,684,989
Household Products & Wares — 1.5%
Church & Dwight Co., Inc. 12,030 1,049,377
Insurance — 4.0%
Aon PLC, Class A 8,245 1,741,921
  Number of
Shares
Value†
 
Insurance — (continued)
Marsh & McLennan Cos., Inc. 8,302 $ 971,334
    2,713,255
Internet — 9.8%
Alibaba Group Holding Ltd., ADR* 5,214 1,213,454
Alphabet, Inc., Class A* 2,684 4,704,086
Tencent Holdings Ltd. 11,100 798,687
    6,716,227
Machinery — Diversified — 1.1%
Otis Worldwide Corp. 11,505 777,163
Media — 2.3%
Comcast Corp., Class A 29,524 1,547,058
Pharmaceuticals — 5.1%
Becton Dickinson and Co. 5,305 1,327,417
Cigna Corp. 3,592 747,783
PRA Health Sciences, Inc.* 9,305 1,167,219
Roche Holding AG 744 259,134
    3,501,553
Private Equity — 0.7%
The Blackstone Group, Inc., Class A 7,763 503,120
Retail — 5.6%
Dollarama, Inc. 29,897 1,218,522
Ross Stores, Inc. 6,757 829,827
Starbucks Corp. 9,164 980,365
The TJX Cos., Inc. 11,678 797,490
    3,826,204
Semiconductors — 3.2%
Analog Devices, Inc. 5,107 754,457
Taiwan Semiconductor Manufacturing Co., Ltd., ADR 5,173 564,064
Texas Instruments, Inc. 5,471 897,955
    2,216,476
Software — 16.4%
Electronic Arts, Inc. 11,262 1,617,223
Fidelity National Information Services, Inc. 7,848 1,110,178
Fiserv, Inc.* 14,830 1,688,544
Microsoft Corp. 30,649 6,816,951
    11,232,896
Transportation — 1.4%
Union Pacific Corp. 4,630 964,059
TOTAL COMMON STOCKS
(Cost $42,697,692)
68,235,575
    
 
91


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Cap Growth Fund
  Number ofShares Value†
SHORT-TERM INVESTMENTS — 0.1%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $100,753)
100,753 $ 100,753
TOTAL INVESTMENTS — 99.7%
(Cost $42,798,445)
  $ 68,336,328
Other Assets & Liabilities — 0.3% 199,697
TOTAL NET ASSETS — 100.0%   $ 68,536,025

See Security Valuation Note.
* Non-income producing security.
ADR— American Depositary Receipt.
AG— Aktiengesellschaft.
PLC— Public Limited Company.
S.E.— Societas Europaea.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Apparel $ 3,703,999 $ 1,733,082 $1,970,917 $—
Beverages 1,311,713 1,311,713
Chemicals 967,876 967,876
Commercial Services 1,860,180 1,860,180
Computers 7,436,660 7,436,660
Cosmetics & Personal Care 3,010,125 3,010,125
Diversified Financial Services 4,378,831 4,378,831
Electronics 4,833,814 4,833,814
Healthcare Products 5,684,989 5,684,989
Household Products & Wares 1,049,377 1,049,377
Insurance 2,713,255 2,713,255
Internet 6,716,227 5,917,540 798,687
Machinery — Diversified 777,163 777,163
Media 1,547,058 1,547,058
Pharmaceuticals 3,501,553 3,242,419 259,134
Private Equity 503,120 503,120
Retail 3,826,204 3,826,204
Semiconductors 2,216,476 2,216,476
Software 11,232,896 11,232,896
Transportation 964,059 964,059
Total Common Stocks 68,235,575 65,206,837 3,028,738
Short-Term Investments 100,753 100,753
Total Investments $ 68,336,328 $ 65,307,590 $ 3,028,738 $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
92


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Core Growth Fund
  Number of
Shares
Value†
COMMON STOCKS — 94.4%
Aerospace & Defense — 2.3%
HEICO Corp., Class A 44,392 $ 5,196,527
Biotechnology — 2.2%
Royalty Pharma PLC, Class A 97,118 4,860,756
Building Materials — 2.3%
Martin Marietta Materials, Inc. 18,109 5,142,413
Chemicals — 3.3%
Ecolab, Inc. 23,637 5,114,101
The Sherwin-Williams Co. 2,996 2,201,791
    7,315,892
Commercial Services — 9.0%
Adyen N.V.* 1,426 3,313,371
Avalara, Inc.* 20,270 3,342,320
S&P Global, Inc. 6,973 2,292,234
Square, Inc., Class A* 51,143 11,130,763
    20,078,688
Diversified Financial Services — 0.7%
Intercontinental Exchange, Inc. 13,392 1,543,964
Electronics — 1.0%
Roper Technologies, Inc. 5,286 2,278,742
Healthcare Products — 6.1%
Danaher Corp. 10,333 2,295,373
Intuitive Surgical, Inc.* 13,755 11,252,965
    13,548,338
Internet — 38.8%
Amazon.com, Inc.* 5,089 16,574,517
Chewy, Inc., Class A* 60,728 5,458,840
Facebook, Inc., Class A* 39,388 10,759,226
Farfetch Ltd., Class A* 60,036 3,830,897
IAC* 27,109 5,133,089
Match Group, Inc.* 22,834 3,452,272
Okta, Inc.* 29,251 7,437,359
Shopify, Inc., Class A* 9,483 10,734,282
Spotify Technology S.A.* 34,561 10,874,964
Twitter, Inc.* 218,031 11,806,379
    86,061,825
Mining — 0.1%
Royal Gold, Inc. 2,453 260,901
Oil & Gas — 0.2%
Texas Pacific Land Trust 691 502,357
Packaging and Containers — 0.9%
Ball Corp. 20,834 1,941,312
Pharmaceuticals — 1.1%
Zoetis, Inc. 14,241 2,356,885
Retail — 3.5%
Costco Wholesale Corp. 14,870 5,602,719
  Number of
Shares
Value†
 
Retail — (continued)
Lululemon Athletica, Inc.* 6,513 $ 2,266,719
    7,869,438
Software — 22.9%
Activision Blizzard, Inc. 39,076 3,628,207
Coupa Software, Inc.* 16,024 5,430,694
ServiceNow, Inc.* 10,139 5,580,810
Snowflake, Inc., Class A* 10,020 2,819,628
Take-Two Interactive Software, Inc.* 11,719 2,435,091
Twilio, Inc., Class A* 22,462 7,603,387
Tyler Technologies, Inc.* 4,872 2,126,725
Veeva Systems, Inc., Class A* 38,941 10,601,687
Workday, Inc., Class A* 23,591 5,652,639
Zoom Video Communications, Inc., Class A* 14,440 4,870,901
    50,749,769
TOTAL COMMON STOCKS
(Cost $133,657,698)
209,707,807
     
SHORT-TERM INVESTMENTS — 6.0%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $13,274,566)
13,274,566 13,274,566
TOTAL INVESTMENTS — 100.4%
(Cost $146,932,264)
  $ 222,982,373
Other Assets & Liabilities — (0.4)% (954,360)
TOTAL NET ASSETS — 100.0%   $ 222,028,013

See Security Valuation Note.
* Non-income producing security.
N.V.— Naamloze Vennootschap.
PLC— Public Limited Company.
S.A.— Societe Anonyme.
Country Weightings as of 12/31/2020††
United States 85%
Canada 6
Sweden 5
United Kingdom 2
Netherlands 2
Total 100%
†† % of total investments as of December 31, 2020.
 
93


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Core Growth Fund
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Aerospace & Defense $ 5,196,527 $ 5,196,527 $ $—
Biotechnology 4,860,756 4,860,756
Building Materials 5,142,413 5,142,413
Chemicals 7,315,892 7,315,892
Commercial Services 20,078,688 16,765,317 3,313,371
Diversified Financial Services 1,543,964 1,543,964
Electronics 2,278,742 2,278,742
Healthcare Products 13,548,338 13,548,338
Internet 86,061,825 86,061,825
Mining 260,901 260,901
Oil & Gas 502,357 502,357
Packaging and Containers 1,941,312 1,941,312
Pharmaceuticals 2,356,885 2,356,885
Retail 7,869,438 7,869,438
Software 50,749,769 50,749,769
Total Common Stocks 209,707,807 206,394,436 3,313,371
Short-Term Investments 13,274,566 13,274,566
Total Investments $ 222,982,373 $ 219,669,002 $ 3,313,371 $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
94


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — 97.7%
Aerospace & Defense — 2.4%
Hexcel Corp. 30,454 $ 1,476,715
Raytheon Technologies Corp. 39,600 2,831,796
    4,308,511
Agriculture — 2.8%
Philip Morris International, Inc. 59,583 4,932,877
Airlines — 0.4%
Southwest Airlines Co. 14,722 686,192
Apparel — 1.0%
Deckers Outdoor Corp.* 6,250 1,792,375
Auto Parts & Equipment — 2.4%
BorgWarner, Inc. 54,094 2,090,192
Gentex Corp. 64,170 2,177,288
    4,267,480
Banks — 8.5%
Citigroup, Inc. 48,846 3,011,844
JPMorgan Chase & Co. 33,178 4,215,929
Northern Trust Corp. 25,210 2,348,059
The Goldman Sachs Group, Inc. 4,777 1,259,743
Wells Fargo & Co. 141,683 4,275,993
    15,111,568
Biotechnology — 5.3%
Alexion Pharmaceuticals, Inc.* 27,082 4,231,292
Amgen, Inc. 22,961 5,279,193
    9,510,485
Commercial Services — 1.5%
Robert Half International, Inc. 43,516 2,718,880
Computers — 6.0%
Cognizant Technology Solutions Corp., Class A 21,498 1,761,761
Leidos Holdings, Inc. 45,909 4,825,954
Lumentum Holdings, Inc.* 7,631 723,419
MAXIMUS, Inc. 45,200 3,308,188
    10,619,322
Distribution & Wholesale — 2.2%
LKQ Corp.* 109,804 3,869,493
Diversified Financial Services — 1.3%
Capital One Financial Corp. 8,679 857,919
LPL Financial Holdings, Inc. 14,783 1,540,684
    2,398,603
Electrical Components & Equipment — 2.9%
Emerson Electric Co. 56,181 4,515,267
Littelfuse, Inc. 2,831 720,942
    5,236,209
Electronics — 3.6%
Dolby Laboratories, Inc., Class A 11,456 1,112,721
Garmin Ltd. 12,147 1,453,510
Hubbell, Inc. 13,278 2,081,858
  Number of
Shares
Value†
 
Electronics — (continued)
Keysight Technologies, Inc.* 13,374 $ 1,766,572
    6,414,661
Engineering & Construction — 1.1%
EMCOR Group, Inc. 20,950 1,916,087
Healthcare Services — 2.3%
Anthem, Inc. 10,702 3,436,305
Quest Diagnostics, Inc. 4,850 577,975
    4,014,280
Home Builders — 1.9%
D.R. Horton, Inc. 49,695 3,424,979
Household Products & Wares — 0.5%
Avery Dennison Corp. 5,520 856,207
Insurance — 9.2%
Aflac, Inc. 25,572 1,137,187
Berkshire Hathaway, Inc., Class B* 31,423 7,286,051
Fidelity National Financial, Inc. 68,854 2,691,503
Reinsurance Group of America, Inc. 5,612 650,431
The Allstate Corp. 41,325 4,542,857
    16,308,029
Internet — 2.1%
F5 Networks, Inc.* 21,675 3,813,500
Iron & Steel — 0.6%
Steel Dynamics, Inc. 28,720 1,058,906
Machinery — Diversified — 3.2%
Altra Industrial Motion Corp. 30,730 1,703,364
Crane Co. 19,290 1,498,061
Curtiss-Wright Corp. 12,055 1,402,599
The Middleby Corp.* 6,242 804,719
Westinghouse Air Brake Technologies Corp. 4,430 324,276
    5,733,019
Media — 4.9%
Comcast Corp., Class A 132,504 6,943,209
Discovery, Inc., Class A* 56,331 1,695,000
    8,638,209
Metal Fabricate/Hardware — 1.2%
Valmont Industries, Inc. 11,730 2,051,929
Mining — 1.2%
BHP Group Ltd., ADR 32,245 2,106,888
Miscellaneous Manufacturing — 0.8%
3M Co. 7,840 1,370,354
Oil & Gas — 3.7%
Chevron Corp. 9,714 820,347
ConocoPhillips 17,220 688,628
EOG Resources, Inc. 26,683 1,330,681
Helmerich & Payne, Inc. 27,941 647,114
 
95


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Oil & Gas — (continued)
Murphy USA, Inc. 15,616 $ 2,043,666
Phillips 66 14,261 997,414
    6,527,850
Pharmaceuticals — 6.4%
Cigna Corp. 16,991 3,537,186
Pfizer, Inc. 68,559 2,523,657
Roche Holding AG, ADR 121,012 5,305,166
    11,366,009
Real Estate — 1.8%
CBRE Group, Inc., Class A* 51,341 3,220,108
Retail — 6.9%
AutoZone, Inc.* 1,150 1,363,256
Dollar General Corp. 7,400 1,556,220
MSC Industrial Direct Co., Inc., Class A 14,413 1,216,313
Target Corp. 20,242 3,573,320
Walmart, Inc. 32,240 4,647,396
    12,356,505
Semiconductors — 1.7%
Lam Research Corp. 3,584 1,692,616
MKS Instruments, Inc. 8,290 1,247,230
    2,939,846
Software — 0.9%
Akamai Technologies, Inc.* 15,239 1,599,943
Telecommunications — 4.9%
Ciena Corp.* 14,270 754,170
Cisco Systems, Inc. 56,422 2,524,884
Verizon Communications, Inc. 91,677 5,386,024
    8,665,078
Transportation — 2.1%
Kansas City Southern 10,752 2,194,806
Knight-Swift Transportation Holdings, Inc. 38,564 1,612,746
    3,807,552
TOTAL COMMON STOCKS
(Cost $144,100,407)
173,641,934
REAL ESTATE INVESTMENT TRUSTS — 0.4%
Apartments — 0.4%
Mid-America Apartment Communities, Inc.
(Cost $660,243)
6,290 796,880
    
  Number ofShares Value†
SHORT-TERM INVESTMENTS — 2.5%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $4,375,128)
4,375,128 $ 4,375,128
TOTAL INVESTMENTS — 100.6%
(Cost $149,135,778)
  $ 178,813,942
Other Assets & Liabilities — (0.6)% (1,002,955)
TOTAL NET ASSETS — 100.0%   $ 177,810,987

See Security Valuation Note.
* Non-income producing security.
ADR— American Depositary Receipt.
AG— Aktiengesellschaft.
Country Weightings as of 12/31/2020††
United States 95%
Switzerland 4
Australia 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $173,641,934 $173,641,934 $— $—
Real Estate Investment Trusts 796,880 796,880
Short-Term Investments 4,375,128 4,375,128
Total Investments $ 178,813,942 $ 178,813,942 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
96


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Core Value Fund
  Number of
Shares
Value†
COMMON STOCKS — 96.4%
Aerospace & Defense — 1.2%
Hexcel Corp. 42,521 $ 2,061,843
Apparel — 1.1%
Capri Holdings Ltd.* 24,054 1,010,268
PVH Corp. 10,663 1,001,149
    2,011,417
Auto Manufacturers — 1.9%
General Motors Co. 43,461 1,809,716
PACCAR, Inc. 18,121 1,563,480
    3,373,196
Banks — 10.3%
Bank of America Corp. 152,523 4,622,972
JPMorgan Chase & Co. 12,531 1,592,314
KeyCorp. 162,883 2,672,910
The Goldman Sachs Group, Inc. 13,586 3,582,764
The PNC Financial Services Group, Inc. 16,865 2,512,885
Truist Financial Corp. 71,576 3,430,638
    18,414,483
Beverages — 2.4%
Constellation Brands, Inc., Class A 9,181 2,011,098
PepsiCo, Inc. 15,925 2,361,678
    4,372,776
Biotechnology — 0.8%
Royalty Pharma PLC, Class A 28,702 1,436,535
Building Materials — 1.5%
Johnson Controls International PLC 57,030 2,657,028
Commercial Services — 1.9%
Euronet Worldwide, Inc.* 23,673 3,430,691
Computers — 2.7%
Cognizant Technology Solutions Corp., Class A 36,232 2,969,213
HP, Inc. 75,085 1,846,340
    4,815,553
Diversified Financial Services — 1.2%
Raymond James Financial, Inc. 23,054 2,205,576
Electric — 7.3%
CMS Energy Corp. 45,076 2,750,087
Edison International 60,139 3,777,932
NextEra Energy, Inc. 57,944 4,470,380
Sempra Energy 16,008 2,039,579
    13,037,978
Food — 2.6%
General Mills, Inc. 32,014 1,882,423
Mondelez International, Inc., Class A 46,753 2,733,648
    4,616,071
Hand & Machine Tools — 1.7%
Stanley Black & Decker, Inc. 16,974 3,030,877
  Number of
Shares
Value†
 
Healthcare Products — 7.1%
Abbott Laboratories 27,804 $ 3,044,260
Boston Scientific Corp.* 43,227 1,554,011
Medtronic PLC 44,311 5,190,590
Thermo Fisher Scientific, Inc. 6,393 2,977,732
    12,766,593
Healthcare Services — 1.3%
UnitedHealth Group, Inc. 6,462 2,266,094
Home Builders — 0.6%
D.R. Horton, Inc. 15,115 1,041,726
Insurance — 9.6%
American International Group, Inc. 66,995 2,536,431
Arch Capital Group Ltd.* 54,643 1,970,973
Berkshire Hathaway, Inc., Class B* 27,068 6,276,257
MetLife, Inc. 28,477 1,336,995
Reinsurance Group of America, Inc. 11,629 1,347,801
The Allstate Corp. 15,721 1,728,210
The Travelers Cos., Inc. 14,652 2,056,701
    17,253,368
Internet — 2.1%
Alphabet, Inc., Class A* 2,161 3,787,455
Iron & Steel — 1.6%
Steel Dynamics, Inc. 77,390 2,853,369
Machinery — Diversified — 2.7%
Caterpillar, Inc. 15,955 2,904,129
Ingersoll Rand, Inc.* 41,603 1,895,433
    4,799,562
Media — 4.3%
Fox Corp., Class A 66,818 1,945,740
The Walt Disney Co.* 31,751 5,752,646
    7,698,386
Miscellaneous Manufacturing — 3.8%
A.O. Smith Corp. 23,278 1,276,100
Eaton Corp. PLC 25,323 3,042,305
Parker-Hannifin Corp. 9,325 2,540,223
    6,858,628
Oil & Gas — 4.7%
Chevron Corp. 35,219 2,974,245
EOG Resources, Inc. 47,930 2,390,269
Phillips 66 24,852 1,738,149
Valero Energy Corp. 21,911 1,239,505
    8,342,168
Packaging and Containers — 1.7%
Packaging Corp. of America 21,928 3,024,090
Pharmaceuticals — 5.7%
Sanofi, ADR 47,855 2,325,274
Johnson & Johnson 41,949 6,601,934
Neurocrine Biosciences, Inc.* 12,521 1,200,138
    10,127,346
 
97


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Large Core Value Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Retail — 5.4%
Best Buy Co., Inc. 18,605 $ 1,856,593
Lowe's Cos., Inc. 12,175 1,954,209
Starbucks Corp. 15,232 1,629,520
Walmart, Inc. 29,849 4,302,733
    9,743,055
Shipbuilding — 1.4%
Huntington Ingalls Industries, Inc. 14,417 2,457,810
Software — 2.8%
Fidelity National Information Services, Inc. 27,163 3,842,478
VMware, Inc., Class A* 8,528 1,196,137
    5,038,615
Telecommunications — 5.0%
Cisco Systems, Inc. 86,095 3,852,751
Verizon Communications, Inc. 87,607 5,146,912
    8,999,663
TOTAL COMMON STOCKS
(Cost $146,510,190)
172,521,952
REAL ESTATE INVESTMENT TRUSTS — 3.9%
Apartments — 1.7%
Mid-America Apartment Communities, Inc. 23,907 3,028,778
Industrial — 0.8%
EastGroup Properties, Inc. 9,787 1,351,193
Office Property — 0.8%
Cousins Properties, Inc. 45,440 1,522,240
Storage & Warehousing — 0.6%
CubeSmart 31,234 1,049,775
TOTAL REAL ESTATE INVESTMENT TRUSTS
(Cost $6,461,292)
  6,951,986
     
SHORT-TERM INVESTMENTS — 0.0%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $49,221)
49,221 49,221
TOTAL INVESTMENTS — 100.3%
(Cost $153,020,703)
  $ 179,523,159
Other Assets & Liabilities — (0.3)% (564,312)
TOTAL NET ASSETS — 100.0%   $ 178,958,847

See Security Valuation Note.
* Non-income producing security.
ADR— American Depositary Receipt.
PLC— Public Limited Company.
Country Weightings as of 12/31/2020††
United States 94%
Ireland 3
France 1
Bermuda 1
United Kingdom 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $172,521,952 $172,521,952 $— $—
Real Estate Investment Trusts 6,951,986 6,951,986
Short-Term Investments 49,221 49,221
Total Investments $ 179,523,159 $ 179,523,159 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
98


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Index 500 Fund
  Number of
Shares
Value†
COMMON STOCKS — 96.5%
Advertising — 0.1%
Omnicom Group, Inc. 4,012 $ 250,228
The Interpublic Group of Cos., Inc. 6,992 164,452
    414,680
Aerospace & Defense — 1.5%
General Dynamics Corp. 4,311 641,563
Howmet Aerospace, Inc. 6,825 194,786
L3Harris Technologies, Inc. 4,019 759,671
Lockheed Martin Corp. 4,611 1,636,813
Northrop Grumman Corp. 2,888 880,031
Raytheon Technologies Corp. 28,080 2,008,001
Teledyne Technologies, Inc.* 700 274,386
The Boeing Co. 9,964 2,132,894
TransDigm Group, Inc.* 1,004 621,325
    9,149,470
Agriculture — 0.7%
Altria Group, Inc. 34,809 1,427,169
Archer-Daniels-Midland Co. 10,253 516,854
Philip Morris International, Inc. 28,827 2,386,587
    4,330,610
Airlines — 0.3%
Alaska Air Group, Inc. 2,219 115,388
American Airlines Group, Inc. 10,078 158,930
Delta Air Lines, Inc. 11,758 472,789
Southwest Airlines Co. 10,881 507,164
United Airlines Holdings, Inc.* 5,189 224,424
    1,478,695
Apparel — 0.7%
Hanesbrands, Inc. 6,506 94,857
NIKE, Inc., Class B 23,414 3,312,379
PVH Corp. 1,321 124,029
Ralph Lauren Corp. 856 88,801
Tapestry, Inc. 5,367 166,806
Under Armour, Inc., Class A* 3,386 58,138
Under Armour, Inc., Class C* 3,927 58,434
VF Corp. 5,897 503,663
    4,407,107
Auto Manufacturers — 2.1%
Cummins, Inc. 2,735 621,119
Ford Motor Co. 72,475 637,055
General Motors Co. 23,491 978,165
PACCAR, Inc. 6,400 552,192
Tesla, Inc.* 14,102 9,951,358
    12,739,889
Auto Parts & Equipment — 0.1%
Aptiv PLC 5,002 651,711
BorgWarner, Inc. 4,705 181,801
    833,512
Banks — 4.6%
Bank of America Corp. 141,175 4,279,014
Citigroup, Inc. 38,526 2,375,513
Citizens Financial Group, Inc. 7,856 280,931
  Number of
Shares
Value†
 
Banks — (continued)
Comerica, Inc. 2,778 $ 155,179
Fifth Third Bancorp 12,820 353,447
First Republic Bank 3,151 462,976
Huntington Bancshares, Inc. 18,896 238,657
JPMorgan Chase & Co. 56,592 7,191,145
KeyCorp. 17,412 285,731
M&T Bank Corp. 2,446 311,376
Morgan Stanley 26,771 1,834,617
Northern Trust Corp. 3,744 348,716
Regions Financial Corp. 19,210 309,665
State Street Corp. 6,489 472,269
SVB Financial Group* 931 361,070
The Bank of New York Mellon Corp. 15,097 640,717
The Goldman Sachs Group, Inc. 6,447 1,700,138
The PNC Financial Services Group, Inc. 7,933 1,182,017
Truist Financial Corp. 25,191 1,207,405
US Bancorp 25,619 1,193,589
Wells Fargo & Co. 77,377 2,335,238
Zions Bancorp NA 2,900 125,976
    27,645,386
Beverages — 1.6%
Brown-Forman Corp., Class B 3,552 282,136
Constellation Brands, Inc., Class A 3,118 682,998
Molson Coors Beverage Co., Class B 3,554 160,605
Monster Beverage Corp.* 6,839 632,471
PepsiCo, Inc. 25,621 3,799,594
The Coca-Cola Co. 71,712 3,932,686
    9,490,490
Biotechnology — 1.6%
Alexion Pharmaceuticals, Inc.* 4,064 634,959
Amgen, Inc. 10,777 2,477,848
Biogen, Inc.* 2,942 720,378
Bio-Rad Laboratories, Inc., Class A* 400 233,176
Corteva, Inc. 13,833 535,614
Gilead Sciences, Inc. 23,468 1,367,246
Illumina, Inc.* 2,723 1,007,510
Incyte Corp.* 3,567 310,258
Regeneron Pharmaceuticals, Inc.* 1,949 941,581
Vertex Pharmaceuticals, Inc.* 4,866 1,150,030
    9,378,600
Building Materials — 0.4%
Carrier Global Corp. 15,063 568,176
Fortune Brands Home & Security, Inc. 2,781 238,387
Johnson Controls International PLC 13,791 642,523
Martin Marietta Materials, Inc. 1,114 316,343
Masco Corp. 4,843 266,026
Vulcan Materials Co. 2,554 378,784
    2,410,239
Chemicals — 1.7%
Air Products and Chemicals, Inc. 4,126 1,127,306
Albemarle Corp. 1,895 279,550
Celanese Corp. 2,085 270,925
 
99


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Index 500 Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Chemicals — (continued)
CF Industries Holdings, Inc. 3,956 $ 153,137
Dow, Inc. 13,774 764,457
DuPont de Nemours, Inc. 13,682 972,927
Eastman Chemical Co. 2,620 262,734
Ecolab, Inc. 4,634 1,002,612
FMC Corp. 2,573 295,715
International Flavors & Fragrances, Inc. 2,063 224,537
Linde PLC 9,716 2,560,263
LyondellBasell Industries N.V., Class A 4,652 426,402
PPG Industries, Inc. 4,373 630,674
The Mosaic Co. 6,834 157,250
The Sherwin-Williams Co. 1,531 1,125,147
    10,253,636
Commercial Services — 2.4%
Automatic Data Processing, Inc. 8,050 1,418,410
Cintas Corp. 1,608 568,364
Equifax, Inc. 2,202 424,634
FleetCor Technologies, Inc.* 1,510 411,973
Gartner, Inc.* 1,667 267,037
Global Payments, Inc. 5,589 1,203,982
IHS Markit Ltd. 6,909 620,635
MarketAxess Holdings, Inc. 686 391,404
Moody's Corp. 3,006 872,461
Nielsen Holdings PLC 6,921 144,441
PayPal Holdings, Inc.* 21,741 5,091,742
Quanta Services, Inc. 2,677 192,798
Robert Half International, Inc. 2,079 129,896
Rollins, Inc. 4,204 164,250
S&P Global, Inc. 4,513 1,483,559
United Rentals, Inc.* 1,356 314,470
Verisk Analytics, Inc. 3,006 624,016
    14,324,072
Computers — 8.0%
Accenture PLC, Class A 11,739 3,066,344
Apple, Inc. 297,134 39,426,710
Cognizant Technology Solutions Corp., Class A 10,089 826,793
DXC Technology Co. 4,316 111,137
Fortinet, Inc.* 2,420 359,443
Hewlett Packard Enterprise Co. 23,895 283,156
HP, Inc. 25,442 625,619
International Business Machines Corp. 16,718 2,104,462
Leidos Holdings, Inc. 2,377 249,870
NetApp, Inc. 4,268 282,712
Seagate Technology PLC 4,306 267,661
Western Digital Corp. 5,440 301,322
    47,905,229
Cosmetics & Personal Care — 1.5%
Colgate-Palmolive Co. 16,048 1,372,265
The Estee Lauder Cos., Inc., Class A 4,213 1,121,458
The Procter & Gamble Co. 46,031 6,404,753
    8,898,476
  Number of
Shares
Value†
 
Distribution & Wholesale — 0.3%
Copart, Inc.* 4,000 $ 509,000
Fastenal Co. 10,593 517,256
LKQ Corp.* 4,999 176,165
Pool Corp. 800 298,000
W.W. Grainger, Inc. 848 346,272
    1,846,693
Diversified Financial Services — 4.0%
American Express Co. 12,213 1,476,674
Ameriprise Financial, Inc. 2,133 414,506
BlackRock, Inc. 2,660 1,919,296
Capital One Financial Corp. 8,495 839,731
Cboe Global Markets, Inc. 2,172 202,257
CME Group, Inc. 6,705 1,220,645
Discover Financial Services 5,650 511,494
Franklin Resources, Inc. 5,190 129,698
Intercontinental Exchange, Inc. 10,490 1,209,392
Invesco Ltd. 7,349 128,093
Mastercard, Inc., Class A 16,327 5,827,759
Nasdaq, Inc. 2,231 296,143
Raymond James Financial, Inc. 2,349 224,729
Synchrony Financial 10,646 369,523
T. Rowe Price Group, Inc. 4,207 636,898
The Charles Schwab Corp. 27,733 1,470,958
The Western Union Co. 7,491 164,353
Visa, Inc., Class A 31,481 6,885,839
    23,927,988
Electric — 2.6%
Alliant Energy Corp. 4,954 255,280
Ameren Corp. 4,699 366,804
American Electric Power Co., Inc. 9,225 768,166
CenterPoint Energy, Inc. 10,877 235,378
CMS Energy Corp. 5,654 344,951
Consolidated Edison, Inc. 6,152 444,605
Dominion Energy, Inc. 15,019 1,129,429
DTE Energy Co. 3,543 430,156
Duke Energy Corp. 13,754 1,259,316
Edison International 6,854 430,568
Entergy Corp. 3,608 360,223
Evergy, Inc. 4,387 243,522
Eversource Energy 6,332 547,781
Exelon Corp. 18,121 765,069
FirstEnergy Corp. 10,280 314,671
NextEra Energy, Inc. 36,279 2,798,925
NRG Energy, Inc. 4,833 181,479
Pinnacle West Capital Corp. 2,115 169,094
PPL Corp. 13,872 391,190
Public Service Enterprise Group, Inc. 9,344 544,755
Sempra Energy 5,370 684,192
The AES Corp. 13,234 310,999
The Southern Co. 19,743 1,212,812
WEC Energy Group, Inc. 5,828 536,351
Xcel Energy, Inc. 9,739 649,299
    15,375,015
 
100


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Index 500 Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Electrical Components & Equipment — 0.2%
AMETEK, Inc. 4,235 $ 512,181
Emerson Electric Co. 11,137 895,081
    1,407,262
Electronics — 1.4%
Agilent Technologies, Inc. 5,721 677,881
Allegion PLC 1,732 201,570
Amphenol Corp., Class A 5,543 724,858
FLIR Systems, Inc. 2,637 115,580
Fortive Corp. 6,522 461,888
Garmin Ltd. 2,676 320,210
Honeywell International, Inc. 12,995 2,764,037
Keysight Technologies, Inc.* 3,600 475,524
Mettler-Toledo International, Inc.* 442 503,739
PerkinElmer, Inc. 2,001 287,144
Roper Technologies, Inc. 1,949 840,194
TE Connectivity Ltd. 6,129 742,038
Vontier Corp.* 2,608 87,107
Waters Corp.* 1,107 273,894
    8,475,664
Engineering & Construction — 0.1%
Jacobs Engineering Group, Inc. 2,302 250,826
Entertainment — 0.0%
Live Nation Entertainment, Inc.* 2,600 191,048
Environmental Control — 0.2%
Pentair PLC 2,923 155,182
Republic Services, Inc. 4,141 398,778
Waste Management, Inc. 7,236 853,342
    1,407,302
Food — 1.1%
Campbell Soup Co. 3,917 189,387
Conagra Brands, Inc. 9,627 349,075
General Mills, Inc. 11,335 666,498
Hormel Foods Corp. 5,195 242,139
Kellogg Co. 4,901 304,989
Lamb Weston Holdings, Inc. 2,600 204,724
McCormick & Co., Inc. 4,502 430,391
Mondelez International, Inc., Class A 26,758 1,564,540
Sysco Corp. 9,442 701,163
The Hershey Co. 2,826 430,485
The J.M. Smucker Co. 2,060 238,136
The Kraft Heinz Co. 11,714 406,007
The Kroger Co. 14,309 454,454
Tyson Foods, Inc., Class A 5,788 372,979
    6,554,967
Forest Products & Paper — 0.1%
International Paper Co. 7,076 351,819
Gas — 0.1%
Atmos Energy Corp. 2,319 221,302
NiSource, Inc. 6,920 158,745
    380,047
  Number of
Shares
Value†
 
Hand & Machine Tools — 0.1%
Snap-on, Inc. 994 $ 170,113
Stanley Black & Decker, Inc. 2,949 526,574
    696,687
Healthcare Products — 4.0%
Abbott Laboratories 32,855 3,597,294
ABIOMED, Inc.* 833 270,058
Align Technology, Inc.* 1,331 711,260
Baxter International, Inc. 9,410 755,058
Boston Scientific Corp.* 26,675 958,966
Danaher Corp. 11,706 2,600,371
DENTSPLY SIRONA, Inc. 4,008 209,859
Edwards Lifesciences Corp.* 11,599 1,058,177
Hologic, Inc.* 5,002 364,296
IDEXX Laboratories, Inc.* 1,581 790,294
Intuitive Surgical, Inc.* 2,194 1,794,911
Medtronic PLC 24,932 2,920,534
ResMed, Inc. 2,680 569,661
STERIS PLC 1,700 322,218
Stryker Corp. 6,119 1,499,400
Teleflex, Inc. 900 370,413
The Cooper Cos., Inc. 956 347,334
Thermo Fisher Scientific, Inc. 7,346 3,421,620
Varian Medical Systems, Inc.* 1,777 310,993
West Pharmaceutical Services, Inc. 1,332 377,369
Zimmer Biomet Holdings, Inc. 3,830 590,165
    23,840,251
Healthcare Services — 2.1%
Anthem, Inc. 4,588 1,473,161
Catalent, Inc.* 3,200 333,024
Centene Corp.* 10,748 645,203
DaVita, Inc.* 1,536 180,326
HCA Healthcare, Inc. 4,905 806,676
Humana, Inc. 2,468 1,012,546
IQVIA Holdings, Inc.* 3,544 634,979
Laboratory Corp. of America Holdings* 1,877 382,063
Quest Diagnostics, Inc. 2,648 315,562
UnitedHealth Group, Inc. 17,612 6,176,176
Universal Health Services, Inc., Class B 1,475 202,813
    12,162,529
Home Builders — 0.2%
D.R. Horton, Inc. 6,008 414,072
Lennar Corp., Class A 4,971 378,939
NVR, Inc.* 63 257,031
PulteGroup, Inc. 4,726 203,785
    1,253,827
Home Furnishings — 0.1%
Leggett & Platt, Inc. 2,436 107,915
Whirlpool Corp. 1,130 203,953
    311,868
Household Products & Wares — 0.4%
Avery Dennison Corp. 1,642 254,691
 
101


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Index 500 Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Household Products & Wares — (continued)
Church & Dwight Co., Inc. 4,840 $ 422,193
Kimberly-Clark Corp. 6,352 856,440
Newell Brands, Inc. 6,989 148,376
The Clorox Co. 2,442 493,089
    2,174,789
Insurance — 3.3%
Aflac, Inc. 12,255 544,980
American International Group, Inc. 15,958 604,170
Aon PLC, Class A 3,126 660,430
Arthur J. Gallagher & Co. 3,523 435,830
Assurant, Inc. 1,127 153,520
Berkshire Hathaway, Inc., Class B* 36,142 8,380,246
Chubb Ltd. 8,445 1,299,854
Cincinnati Financial Corp. 2,844 248,480
Everest Re Group Ltd. 725 169,715
Globe Life, Inc. 1,873 177,860
Lincoln National Corp. 3,150 158,477
Loews Corp. 4,441 199,934
Marsh & McLennan Cos., Inc. 9,462 1,107,054
MetLife, Inc. 14,312 671,948
Principal Financial Group, Inc. 4,871 241,650
Prudential Financial, Inc. 7,307 570,457
The Allstate Corp. 5,786 636,055
The Hartford Financial Services Group, Inc. 6,415 314,207
The Progressive Corp. 10,929 1,080,660
The Travelers Cos., Inc. 4,695 659,037
Unum Group 4,002 91,806
W.R. Berkley Corp. 2,600 172,692
Willis Towers Watson PLC 3,789 798,267
    19,377,329
Internet — 11.2%
Alphabet, Inc., Class A* 5,585 9,788,494
Alphabet, Inc., Class C* 5,392 9,446,137
Amazon.com, Inc.* 7,928 25,820,941
Booking Holdings, Inc.* 767 1,708,316
CDW Corp. 2,800 369,012
eBay, Inc. 12,334 619,784
Etsy, Inc.* 2,300 409,193
Expedia Group, Inc. 2,434 322,262
F5 Networks, Inc.* 1,163 204,618
Facebook, Inc., Class A* 44,666 12,200,965
Netflix, Inc.* 8,195 4,431,282
Nortonlifelock, Inc. 10,440 216,943
Twitter, Inc.* 14,715 796,817
VeriSign, Inc.* 1,814 392,550
    66,727,314
Iron & Steel — 0.1%
Nucor Corp. 5,697 303,023
Leisure Time — 0.1%
Carnival Corp. 11,314 245,061
Norwegian Cruise Line Holdings Ltd.* 5,241 133,279
  Number of
Shares
Value†
 
Leisure Time — (continued)
Royal Caribbean Cruises Ltd. 3,305 $ 246,850
    625,190
Lodging — 0.3%
Hilton Worldwide Holdings, Inc. 5,123 569,985
Las Vegas Sands Corp. 5,905 351,938
Marriott International, Inc., Class A 4,931 650,498
MGM Resorts International 7,436 234,308
Wynn Resorts Ltd. 1,824 205,802
    2,012,531
Machinery — Diversified — 1.0%
Caterpillar, Inc. 10,157 1,848,777
Deere & Co. 5,871 1,579,592
Dover Corp. 2,703 341,254
Flowserve Corp. 2,355 86,782
IDEX Corp. 1,400 278,880
Ingersoll Rand, Inc.* 6,657 303,293
Otis Worldwide Corp. 7,506 507,030
Rockwell Automation, Inc. 2,142 537,235
Westinghouse Air Brake Technologies Corp. 3,394 248,441
Xylem, Inc. 3,235 329,291
    6,060,575
Media — 2.3%
Charter Communications, Inc., Class A* 2,696 1,783,539
Comcast Corp., Class A 84,688 4,437,651
Discovery, Inc., Class A* 2,889 86,930
Discovery, Inc., Class C* 6,249 163,661
DISH Network Corp., Class A* 4,587 148,344
Fox Corp., Class A 6,568 191,260
Fox Corp., Class B 3,120 90,106
News Corp., Class A 7,615 136,841
News Corp., Class B 2,500 44,425
The Walt Disney Co.* 33,604 6,088,373
ViacomCBS, Inc., Class B 10,714 399,204
    13,570,334
Mining — 0.3%
Freeport-McMoRan, Inc. 26,936 700,874
Newmont Corp. 14,966 896,314
    1,597,188
Miscellaneous Manufacturing — 1.2%
3M Co. 10,807 1,888,956
A.O. Smith Corp. 2,467 135,241
Eaton Corp. PLC 7,452 895,283
General Electric Co. 164,162 1,772,950
Illinois Tool Works, Inc. 5,374 1,095,651
Parker-Hannifin Corp. 2,384 649,426
Textron, Inc. 4,198 202,889
Trane Technologies PLC 4,434 643,639
    7,284,035
 
102


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Index 500 Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Office & Business Equipment — 0.1%
Xerox Holdings Corp. 3,386 $ 78,521
Zebra Technologies Corp., Class A* 1,000 384,330
    462,851
Oil & Gas — 1.8%
Apache Corp. 7,042 99,926
Cabot Oil & Gas Corp. 7,932 129,133
Chevron Corp. 35,670 3,012,332
Concho Resources, Inc. 3,754 219,046
ConocoPhillips 19,971 798,640
Devon Energy Corp. 6,551 103,571
Diamondback Energy, Inc. 2,900 140,360
EOG Resources, Inc. 10,770 537,100
Exxon Mobil Corp. 78,368 3,230,329
Hess Corp. 5,203 274,666
HollyFrontier Corp. 2,881 74,474
Marathon Oil Corp. 13,811 92,119
Marathon Petroleum Corp. 12,004 496,485
Occidental Petroleum Corp. 14,979 259,287
Phillips 66 8,071 564,486
Pioneer Natural Resources Co. 2,956 336,659
Valero Energy Corp. 7,377 417,317
    10,785,930
Oil & Gas Services — 0.2%
Baker Hughes Co. 12,203 254,433
Halliburton Co. 15,860 299,754
National Oilwell Varco, Inc.* 7,110 97,620
Schlumberger Ltd. 25,694 560,900
TechnipFMC PLC 7,506 70,556
    1,283,263
Packaging and Containers — 0.3%
Amcor PLC 29,432 346,415
Ball Corp. 6,036 562,434
Packaging Corp. of America 1,747 240,929
Sealed Air Corp. 2,786 127,571
Westrock Co. 5,192 226,008
    1,503,357
Pharmaceuticals — 5.4%
AbbVie, Inc. 32,723 3,506,269
AmerisourceBergen Corp. 2,912 284,677
Becton Dickinson and Co. 5,424 1,357,193
Bristol-Myers Squibb Co. 42,358 2,627,467
Cardinal Health, Inc. 5,242 280,762
Cigna Corp. 6,661 1,386,687
CVS Health Corp. 24,535 1,675,741
DexCom, Inc.* 1,774 655,883
Eli Lilly and Co. 14,698 2,481,610
Henry Schein, Inc.* 2,784 186,138
Johnson & Johnson 48,884 7,693,364
McKesson Corp. 2,994 520,717
Merck & Co., Inc. 46,907 3,836,993
Perrigo Co. PLC 2,383 106,568
Pfizer, Inc. 103,067 3,793,896
Viatris, Inc.* 21,779 408,138
  Number of
Shares
Value†
 
Pharmaceuticals — (continued)
Zoetis, Inc. 8,896 $ 1,472,288
    32,274,391
Pipelines — 0.2%
Kinder Morgan, Inc. 35,950 491,436
ONEOK, Inc. 8,760 336,209
The Williams Cos., Inc. 22,374 448,599
    1,276,244
Real Estate — 0.1%
CBRE Group, Inc., Class A* 6,460 405,171
Retail — 5.2%
Advance Auto Parts, Inc. 1,375 216,576
AutoZone, Inc.* 431 510,925
Best Buy Co., Inc. 4,236 422,710
CarMax, Inc.* 2,935 277,240
Chipotle Mexican Grill, Inc.* 520 721,089
Costco Wholesale Corp. 8,174 3,079,800
Darden Restaurants, Inc. 2,583 307,687
Dollar General Corp. 4,646 977,054
Dollar Tree, Inc.* 4,377 472,891
Domino's Pizza, Inc. 723 277,242
Genuine Parts Co. 2,844 285,623
L Brands, Inc. 4,435 164,938
Lowe's Cos., Inc. 13,556 2,175,874
McDonald's Corp. 13,803 2,961,848
O'Reilly Automotive, Inc.* 1,373 621,379
Ross Stores, Inc. 6,616 812,511
Starbucks Corp. 21,953 2,348,532
Target Corp. 9,382 1,656,204
The Gap, Inc. 4,382 88,473
The Home Depot, Inc. 19,980 5,307,088
The TJX Cos., Inc. 22,459 1,533,725
Tiffany & Co. 2,141 281,434
Tractor Supply Co. 2,086 293,250
Ulta Beauty, Inc.* 1,059 304,102
Walgreens Boots Alliance, Inc. 13,289 529,965
Walmart, Inc. 25,703 3,705,087
Yum! Brands, Inc. 5,581 605,873
    30,939,120
Savings & Loans — 0.0%
People's United Financial, Inc. 7,929 102,522
Semiconductors — 5.1%
Advanced Micro Devices, Inc.* 22,041 2,021,380
Analog Devices, Inc. 4,850 716,491
Applied Materials, Inc. 17,108 1,476,420
Broadcom, Inc. 7,564 3,311,897
Intel Corp. 75,984 3,785,523
IPG Photonics Corp.* 667 149,268
KLA Corp. 2,890 748,250
Lam Research Corp. 2,654 1,253,405
Maxim Integrated Products, Inc. 9,129 809,286
Microchip Technology, Inc. 4,682 646,631
Micron Technology, Inc.* 20,812 1,564,646
 
103


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Index 500 Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Semiconductors — (continued)
NVIDIA Corp. 11,490 $ 6,000,078
Qorvo, Inc.* 2,048 340,521
QUALCOMM, Inc. 20,956 3,192,437
Skyworks Solutions, Inc. 3,074 469,953
Teradyne, Inc. 3,200 383,648
Texas Instruments, Inc. 17,000 2,790,210
Xilinx, Inc. 4,535 642,927
    30,302,971
Shipbuilding — 0.0%
Huntington Ingalls Industries, Inc. 741 126,326
Software — 9.7%
Activision Blizzard, Inc. 14,438 1,340,568
Adobe, Inc.* 8,898 4,450,068
Akamai Technologies, Inc.* 3,096 325,049
ANSYS, Inc.* 1,586 576,987
Autodesk, Inc.* 4,099 1,251,589
Broadridge Financial Solutions, Inc. 2,272 348,070
Cadence Design Systems, Inc.* 5,170 705,343
Cerner Corp. 5,988 469,938
Citrix Systems, Inc. 2,201 286,350
Electronic Arts, Inc. 5,369 770,988
Fidelity National Information Services, Inc. 11,615 1,643,058
Fiserv, Inc.* 10,390 1,183,005
Intuit, Inc. 4,910 1,865,063
Jack Henry & Associates, Inc. 1,400 226,786
Microsoft Corp. 140,555 31,262,243
MSCI, Inc. 1,552 693,015
Oracle Corp. 35,094 2,270,231
Paychex, Inc. 5,925 552,092
Paycom Software, Inc.* 900 407,025
salesforce.com, Inc.* 16,965 3,775,221
ServiceNow, Inc.* 3,599 1,980,998
Synopsys, Inc.* 2,818 730,538
Take-Two Interactive Software, Inc.* 2,249 467,320
Tyler Technologies, Inc.* 734 320,406
    57,901,951
Telecommunications — 2.5%
Arista Networks, Inc.* 972 282,434
AT&T, Inc. 132,134 3,800,174
CenturyLink, Inc. 19,700 192,075
Cisco Systems, Inc. 78,325 3,505,044
Corning, Inc. 14,043 505,548
Juniper Networks, Inc. 6,659 149,894
Motorola Solutions, Inc. 3,135 533,138
T-Mobile US, Inc.* 10,892 1,468,786
Verizon Communications, Inc. 76,765 4,509,944
    14,947,037
Textiles — 0.0%
Mohawk Industries, Inc.* 1,128 158,992
Toys, Games & Hobbies — 0.0%
Hasbro, Inc. 2,506 234,411
  Number of
Shares
Value†
 
Transportation — 1.7%
C.H. Robinson Worldwide, Inc. 2,589 $ 243,029
CSX Corp. 14,311 1,298,723
Expeditors International of Washington, Inc. 3,212 305,493
FedEx Corp. 4,510 1,170,886
J.B. Hunt Transport Services, Inc. 1,592 217,547
Kansas City Southern 1,682 343,347
Norfolk Southern Corp. 4,765 1,132,212
Old Dominion Freight Line, Inc. 1,730 337,661
Union Pacific Corp. 12,475 2,597,545
United Parcel Service, Inc., Class B 13,278 2,236,015
    9,882,458
Water — 0.1%
American Water Works Co., Inc. 3,343 513,050
TOTAL COMMON STOCKS
(Cost $278,615,933)
574,926,237
REAL ESTATE INVESTMENT TRUSTS — 2.3%
Apartments — 0.3%
AvalonBay Communities, Inc. 2,525 405,086
Equity Residential 6,174 365,995
Essex Property Trust, Inc. 1,263 299,861
Mid-America Apartment Communities, Inc. 2,116 268,076
UDR, Inc. 5,687 218,551
    1,557,569
Diversified — 0.9%
American Tower Corp. 8,320 1,867,507
Crown Castle International Corp. 7,846 1,249,005
Digital Realty Trust, Inc. 4,988 695,876
Duke Realty Corp. 6,867 274,474
SBA Communications Corp. 2,071 584,291
Vornado Realty Trust 2,813 105,038
Weyerhaeuser Co. 13,744 460,836
    5,237,027
Healthcare — 0.2%
Healthpeak Properties, Inc. 10,663 322,342
Ventas, Inc. 6,740 330,530
Welltower, Inc. 7,702 497,703
    1,150,575
Hotels & Resorts — 0.0%
Host Hotels & Resorts, Inc. 12,690 185,655
Industrial — 0.2%
Prologis, Inc. 13,829 1,378,198
Office Property — 0.1%
Alexandria Real Estate Equities, Inc. 2,237 398,678
Boston Properties, Inc. 2,616 247,291
SL Green Realty Corp. 1,350 80,433
    726,402
 
104


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Index 500 Fund
  Number of
Shares
Value†
REAL ESTATE INVESTMENT TRUSTS — (continued)
Regional Malls — 0.1%
Simon Property Group, Inc. 6,008 $ 512,362
Single Tenant — 0.1%
Realty Income Corp. 6,696 416,290
Storage & Warehousing — 0.2%
Extra Space Storage, Inc. 2,412 279,454
Iron Mountain, Inc. 5,224 154,004
Public Storage 2,819 650,992
    1,084,450
Strip Centers — 0.0%
Federal Realty Investment Trust 1,233 104,953
Kimco Realty Corp. 8,160 122,482
Regency Centers Corp. 3,024 137,864
    365,299
Telecommunications — 0.2%
Equinix, Inc. 1,655 1,181,968
TOTAL REAL ESTATE INVESTMENT TRUSTS
(Cost $9,833,740)
  13,795,795
     
SHORT-TERM INVESTMENTS — 0.9%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $5,658,995)
5,658,995 5,658,995
TOTAL INVESTMENTS — 99.7%
(Cost $294,108,668)
  $ 594,381,027
Other Assets & Liabilities — 0.3% 1,551,883
TOTAL NET ASSETS — 100.0%   $ 595,932,910

See Security Valuation Note.
* Non-income producing security.
    
N.V.— Naamloze Vennootschap.
NA— National Association.
PLC— Public Limited Company.
S&P— Standards & Poor's
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $574,926,237 $574,926,237 $— $—
Real Estate Investment Trusts 13,795,795 13,795,795
Short-Term Investments 5,658,995 5,658,995
Total Investments $ 594,381,027 $ 594,381,027 $ $
Other Financial Instruments(1)        
Futures Contracts $ 165,487 $ 165,487 $— $—
Total Assets—Other Financial Instruments $ 165,487 $ 165,487 $ $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
 
Futures contracts held by the Fund at December 31, 2020 are as follows:
Futures Contracts:
Exchange Traded
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Long   E-mini S&P 500 Index   03/19/2021   35   50   $3,749   $6,560,400   $165,487   $—
                            $165,487   $—
The accompanying notes are an integral part of these financial statements.
105


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Cap Growth Fund
  Number of
Shares
Value†
COMMON STOCKS — 98.5%
Apparel — 0.9%
Canada Goose Holdings, Inc.* 60,051 $ 1,787,718
Auto Parts & Equipment — 1.4%
BorgWarner, Inc. 73,479 2,839,229
Banks — 3.8%
First Republic Bank 25,072 3,683,829
SVB Financial Group* 9,995 3,876,361
    7,560,190
Biotechnology — 3.3%
Genmab A/S, ADR* 55,788 2,268,340
Maravai LifeSciences Holdings, Inc., Class A* 43,083 1,208,478
Seagen, Inc.* 17,731 3,105,408
    6,582,226
Building Materials — 1.8%
Trex Co., Inc.* 42,825 3,585,309
Chemicals — 1.4%
RPM International, Inc. 31,194 2,831,791
Commercial Services — 9.7%
CoStar Group, Inc.* 7,413 6,851,688
MarketAxess Holdings, Inc. 10,156 5,794,607
Square, Inc., Class A* 10,151 2,209,264
TransUnion 43,327 4,298,905
    19,154,464
Computers — 1.6%
Crowdstrike Holdings, Inc., Class A* 14,838 3,142,985
Distribution & Wholesale — 2.2%
Fastenal Co. 89,498 4,370,187
Electrical Components & Equipment — 2.1%
Novanta, Inc.* 9,437 1,115,642
Universal Display Corp. 12,770 2,934,546
    4,050,188
Electronics — 5.1%
Agilent Technologies, Inc. 21,068 2,496,347
II-VI, Inc.* 45,992 3,493,552
Keysight Technologies, Inc.* 30,373 4,011,970
    10,001,869
Food — 1.2%
The Hershey Co. 16,099 2,452,361
Healthcare Products — 10.9%
10X Genomics, Inc., Class A* 8,035 1,137,756
ABIOMED, Inc.* 12,153 3,940,003
Align Technology, Inc.* 3,373 1,802,464
Bio-Techne Corp. 6,839 2,171,724
Edwards Lifesciences Corp.* 34,069 3,108,115
Envista Holdings Corp.* 62,982 2,124,383
Glaukos Corp.* 25,216 1,897,756
Intuitive Surgical, Inc.* 4,051 3,314,123
  Number of
Shares
Value†
 
Healthcare Products — (continued)
Masimo Corp.* 7,243 $ 1,943,876
    21,440,200
Healthcare Services — 2.5%
Laboratory Corp. of America Holdings* 13,807 2,810,415
Teladoc Health, Inc.* 10,263 2,052,189
    4,862,604
Household Products & Wares — 1.8%
The Scotts Miracle-Gro Co. 17,320 3,449,105
Internet — 4.2%
Palo Alto Networks, Inc.* 7,764 2,759,248
Twitter, Inc.* 54,317 2,941,266
Zendesk, Inc.* 17,950 2,569,004
    8,269,518
Machinery — Diversified — 3.7%
IDEX Corp. 15,650 3,117,480
The Middleby Corp.* 31,773 4,096,175
    7,213,655
Miscellaneous Manufacturing — 2.7%
A.O. Smith Corp. 55,248 3,028,695
Trane Technologies PLC 15,868 2,303,399
    5,332,094
Pharmaceuticals — 2.4%
DexCom, Inc.* 12,707 4,698,032
Retail — 10.1%
Chipotle Mexican Grill, Inc.* 4,814 6,675,622
Dollar Tree, Inc.* 23,345 2,522,194
Lululemon Athletica, Inc.* 6,597 2,295,954
National Vision Holdings, Inc.* 50,988 2,309,246
Nordstrom, Inc. 35,173 1,097,749
Ollie's Bargain Outlet Holdings, Inc.* 13,574 1,109,946
Ulta Beauty, Inc.* 13,405 3,849,380
    19,860,091
Semiconductors — 9.5%
Brooks Automation, Inc. 24,249 1,645,295
Marvell Technology Group Ltd. 57,977 2,756,226
Microchip Technology, Inc. 28,359 3,916,661
Monolithic Power Systems, Inc. 14,573 5,337,070
Teradyne, Inc. 41,429 4,966,923
    18,622,175
Software — 14.6%
Cerner Corp. 41,865 3,285,565
DocuSign, Inc.* 22,872 5,084,446
Electronic Arts, Inc. 37,928 5,446,461
Guidewire Software, Inc.* 28,284 3,640,999
Paycom Software, Inc.* 5,226 2,363,459
Twilio, Inc., Class A* 16,345 5,532,782
Tyler Technologies, Inc.* 7,784 3,397,872
    28,751,584
 
106


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Cap Growth Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Telecommunications — 1.6%
Arista Networks, Inc.* 10,804 $ 3,139,318
TOTAL COMMON STOCKS
(Cost $99,187,164)
193,996,893
  Number of
Contracts
 
PURCHASED OPTIONS — 0.2%
Call Options    
Put Options    
TOTAL PURCHASED OPTIONS    
(See open purchased options schedule)
(Cost $667,977) 1,549 345,492
  Number of
Shares
 
SHORT-TERM INVESTMENTS — 2.3%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $4,666,897)
4,666,897 4,666,897
TOTAL INVESTMENTS — 101.0%
(Cost $104,522,038)
  $ 199,009,282
Other Assets & Liabilities — (1.0)% (2,016,987)
TOTAL NET ASSETS — 100.0%   $ 196,992,295
  Number of
Contracts
 
WRITTEN OPTIONS — (0.0)%
Call Options    
Put Options    
TOTAL WRITTEN OPTIONS    
(See open written options schedule)
(Premiums $(132,247)) (1,483) $ (31,903)

See Security Valuation Note.
* Non-income producing security.
    
A/S— Aktieselskab.
ADR— American Depositary Receipt.
PLC— Public Limited Company.
ETF— Exchange-Traded Fund.
S&P— Standards & Poor's
SPDR— Standard & Poor's Depositary Receipt.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $193,996,893 $193,996,893 $ $—
Purchased Options 345,492 293,922 51,570
Short-Term Investments 4,666,897 4,666,897
Total Investments $ 199,009,282 $ 198,957,712 $ 51,570 $
LIABILITIES TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Other Financial Instruments(1)        
Written Options $(31,903) $(31,903) $— $—
Total Liabilities—Other Financial Instruments $ (31,903) $ (31,903) $ $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
 
107


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Cap Growth Fund
Open purchased options contracts held by the Fund at December 31, 2020 are as follows:
Open Purchased Options
Exchange Traded
Call Options                    
Description   # of
Contracts
  Notional   Exercise
Price
  Expiration
Date
  Value
Marvell Technology Group Ltd.   203   $ 913,500   $45   1/15/2021   $ 63,539
Twitter, Inc.   269   1,452,600   54   1/22/2021   59,987
Total Call Options Purchased                   $123,526
Put Options                    
Description   # of
Contracts
  Notional   Exercise
Price
  Expiration
Date
  Value
Invesco QQQ Trust   513   $15,390,000   $ 300   1/15/2021   $ 117,990
iShares Russell 2000 ETF   182   3,421,600   188   1/15/2021   33,306
SPDR S&P MidCap 400 ETF Trust   191   7,640,000   400   1/15/2021   51,570
SPDR S&P MidCap 400 ETF Trust   191   7,735,500   405   1/15/2021   19,100
Total Put Options Purchased                   $ 221,966
Total Purchased Options                   $345,492
Open written options contracts held by the Fund at December 31, 2020 are as follows:
Open Written Options
Exchange Traded
Call Options                    
Description   # of
Contracts
  Notional   Exercise
Price
  Expiration
Date
  Value
Marvell Technology Group Ltd.   (203)   $1,116,500   $55   1/15/2021   $(2,842)
Put Options                    
Description   # of
Contracts
  Notional   Exercise
Price
  Expiration
Date
  Value
Invesco QQQ Trust   (513)   $13,440,600   $262   1/15/2021   $(10,260)
iShares Russell 2000 ETF   (182)   2,984,800   164   1/15/2021   (2,912)
Marvell Technology Group Ltd.   (203)   710,500   35   1/15/2021   (609)
SPDR S&P MidCap 400 ETF Trust   (382)   13,561,000   355   1/15/2021   (15,280)
Total Put Options Written                   $ (29,061)
Total Written Options                   $ (31,903)
The accompanying notes are an integral part of these financial statements.
108


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — 87.0%
Apparel — 2.9%
Carter's, Inc. 3,058 $ 287,666
Columbia Sportswear Co. 10,459 913,908
Levi Strauss & Co., Class A 76,116 1,528,409
    2,729,983
Auto Parts & Equipment — 1.1%
Aptiv PLC 8,108 1,056,391
Banks — 8.8%
Citizens Financial Group, Inc. 65,858 2,355,082
Fifth Third Bancorp 39,410 1,086,534
First Horizon Corp. 115,781 1,477,366
M&T Bank Corp. 16,034 2,041,128
Regions Financial Corp. 83,792 1,350,727
    8,310,837
Biotechnology — 1.0%
Corteva, Inc. 25,085 971,291
Building Materials — 1.1%
Martin Marietta Materials, Inc. 3,612 1,025,700
Chemicals — 6.3%
Axalta Coating Systems Ltd.* 40,907 1,167,895
NewMarket Corp. 4,618 1,839,303
Nutrien Ltd. 25,923 1,248,452
W.R. Grace & Co. 16,416 899,925
Westlake Chemical Corp. 9,581 781,809
    5,937,384
Commercial Services — 0.8%
Global Payments, Inc. 3,740 805,671
Computers — 1.4%
Check Point Software Technologies Ltd.* 9,804 1,303,050
Distribution & Wholesale — 1.3%
IAA, Inc.* 18,610 1,209,278
Diversified Financial Services — 1.7%
Discover Financial Services 17,797 1,611,162
Electric — 6.6%
Alliant Energy Corp. 45,979 2,369,298
Entergy Corp. 18,768 1,873,797
Evergy, Inc. 35,931 1,994,530
    6,237,625
Electrical Components & Equipment — 1.9%
AMETEK, Inc. 14,880 1,799,587
Electronics — 1.4%
Agilent Technologies, Inc. 8,706 1,031,574
Avnet, Inc. 8,007 281,126
    1,312,700
Engineering & Construction — 1.1%
EMCOR Group, Inc. 11,324 1,035,693
  Number of
Shares
Value†
 
Environmental Control — 1.4%
Waste Connections, Inc. 12,571 $ 1,289,407
Food — 1.6%
Sanderson Farms, Inc. 1,545 204,249
Tyson Foods, Inc., Class A 21,161 1,363,615
    1,567,864
Gas — 0.9%
Southwest Gas Holdings, Inc. 14,594 886,585
Hand & Machine Tools — 1.9%
Lincoln Electric Holdings, Inc. 15,346 1,783,972
Healthcare Services — 2.6%
Laboratory Corp. of America Holdings* 12,281 2,499,798
Home Furnishings — 0.3%
Leggett & Platt, Inc. 6,993 309,790
Insurance — 10.0%
Axis Capital Holdings Ltd. 32,998 1,662,769
First American Financial Corp. 13,187 680,845
Globe Life, Inc. 28,931 2,747,288
RenaissanceRe Holdings Ltd. 11,858 1,966,294
The Hartford Financial Services Group, Inc. 49,838 2,441,065
    9,498,261
Internet — 1.6%
F5 Networks, Inc.* 8,928 1,570,792
Machinery — Construction & Mining — 3.0%
BWX Technologies, Inc. 47,588 2,868,605
Media — 1.8%
Fox Corp., Class B 58,414 1,686,996
Miscellaneous Manufacturing — 1.1%
Carlisle Cos., Inc. 6,750 1,054,215
Oil & Gas — 1.0%
Pioneer Natural Resources Co. 8,389 955,423
Packaging and Containers — 1.8%
Graphic Packaging Holding Co. 101,756 1,723,747
Pharmaceuticals — 0.8%
Henry Schein, Inc.* 11,401 762,271
Retail — 6.0%
AutoZone, Inc.* 632 749,198
Casey's General Stores, Inc. 8,280 1,478,974
MSC Industrial Direct Co., Inc., Class A 13,493 1,138,674
O'Reilly Automotive, Inc.* 1,298 587,436
Qurate Retail, Inc., Class A 81,626 895,437
Ross Stores, Inc. 6,816 837,073
    5,686,792
Savings & Loans — 1.3%
Washington Federal, Inc. 46,966 1,208,905
 
109


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Semiconductors — 2.3%
Analog Devices, Inc. 3,319 $ 490,316
Maxim Integrated Products, Inc. 18,827 1,669,013
    2,159,329
Software — 7.3%
CDK Global, Inc. 33,161 1,718,735
Cerner Corp. 14,067 1,103,978
Citrix Systems, Inc. 10,819 1,407,552
Electronic Arts, Inc. 11,974 1,719,466
Synopsys, Inc.* 3,628 940,523
    6,890,254
Telecommunications — 0.8%
Motorola Solutions, Inc. 4,511 767,141
Trucking and Leasing — 2.1%
GATX Corp. 23,803 1,979,933
TOTAL COMMON STOCKS
(Cost $64,381,565)
82,496,432
REAL ESTATE INVESTMENT TRUSTS — 11.9%
Apartments — 1.9%
Camden Property Trust 17,709 1,769,483
Building & Real Estate — 2.8%
Equity LifeStyle Properties, Inc. 42,198 2,673,665
Diversified — 1.6%
Lamar Advertising Co., Class A 18,236 1,517,600
Hotels & Resorts — 0.6%
Apple Hospitality REIT, Inc. 43,590 562,747
Industrial — 1.4%
Americold Realty Trust 36,417 1,359,447
Office Property — 1.7%
Equity Commonwealth 58,955 1,608,293
Storage & Warehousing — 1.9%
Public Storage 7,685 1,774,697
TOTAL REAL ESTATE INVESTMENT TRUSTS
(Cost $10,031,654)
  11,265,932
     
SHORT-TERM INVESTMENTS — 1.7%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $1,560,819)
1,560,819 1,560,819
TOTAL INVESTMENTS — 100.6%
(Cost $75,974,038)
  $ 95,323,183
Other Assets & Liabilities — (0.6)% (561,300)
TOTAL NET ASSETS — 100.0%   $ 94,761,883

See Security Valuation Note.
* Non-income producing security.
PLC— Public Limited Company.
REIT— Real Estate Investment Trust.
Country Weightings as of 12/31/2020††
United States 92%
Bermuda 4
Israel 2
Canada 1
Ireland 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $82,496,432 $82,496,432 $— $—
Real Estate Investment Trusts 11,265,932 11,265,932
Short-Term Investments 1,560,819 1,560,819
Total Investments $ 95,323,183 $ 95,323,183 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
110


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Core Value Fund
  Number of
Shares
Value†
COMMON STOCKS — 93.0%
Aerospace & Defense — 2.1%
BAE Systems PLC 134,735 $ 898,517
General Dynamics Corp. 6,947 1,033,853
    1,932,370
Airlines — 1.7%
Southwest Airlines Co. 34,158 1,592,104
Auto Manufacturers — 2.7%
Cummins, Inc. 2,592 588,643
Honda Motor Co., Ltd., ADR 33,511 946,686
PACCAR, Inc. 11,225 968,493
    2,503,822
Auto Parts & Equipment — 1.4%
Aptiv PLC 4,784 623,307
BorgWarner, Inc. 18,748 724,423
    1,347,730
Banks — 9.8%
Commerce Bancshares, Inc. 16,909 1,110,921
Eastern Bankshares, Inc.* 14,425 235,272
M&T Bank Corp. 5,919 753,489
Northern Trust Corp. 24,229 2,256,689
State Street Corp. 8,493 618,120
The Bank of New York Mellon Corp. 38,468 1,632,582
The PNC Financial Services Group, Inc. 4,454 663,646
Truist Financial Corp. 25,945 1,243,544
Westamerica BanCorp 12,642 698,976
    9,213,239
Building Materials — 1.4%
Johnson Controls International PLC 27,790 1,294,736
Computers — 1.3%
HP, Inc. 50,922 1,252,172
Diversified Financial Services — 2.5%
Ameriprise Financial, Inc. 6,656 1,293,461
T. Rowe Price Group, Inc. 6,754 1,022,488
    2,315,949
Electric — 6.3%
Ameren Corp. 4,819 376,171
Edison International 22,433 1,409,241
Evergy, Inc. 9,957 552,713
Eversource Energy 1,431 123,796
NorthWestern Corp. 22,373 1,304,570
Pinnacle West Capital Corp. 19,343 1,546,473
Xcel Energy, Inc. 8,587 572,495
    5,885,459
Electrical Components & Equipment — 2.3%
Emerson Electric Co. 27,352 2,198,280
Electronics — 4.3%
Hubbell, Inc. 9,600 1,505,184
nVent Electric PLC 72,416 1,686,569
  Number of
Shares
Value†
 
Electronics — (continued)
TE Connectivity Ltd. 6,929 $ 838,894
    4,030,647
Environmental Control — 1.6%
Republic Services, Inc. 15,480 1,490,724
Food — 7.9%
Conagra Brands, Inc. 41,166 1,492,679
Kellogg Co. 14,486 901,464
Koninklijke Ahold Delhaize N.V. 56,135 1,583,643
Mondelez International, Inc., Class A 7,490 437,941
Orkla ASA 80,092 813,129
Sysco Corp. 11,296 838,841
The J.M. Smucker Co. 11,472 1,326,163
    7,393,860
Food Service — 1.1%
Sodexo S.A. 12,258 1,036,705
Forest Products & Paper — 1.3%
Mondi PLC 52,840 1,238,140
Gas — 1.7%
Atmos Energy Corp. 8,391 800,753
Spire, Inc. 11,859 759,450
    1,560,203
Healthcare Products — 5.0%
Envista Holdings Corp.* 32,593 1,099,362
Hill-Rom Holdings, Inc. 5,345 523,649
Hologic, Inc.* 4,978 362,548
Zimmer Biomet Holdings, Inc. 17,488 2,694,726
    4,680,285
Healthcare Services — 3.2%
Quest Diagnostics, Inc. 11,588 1,380,942
Universal Health Services, Inc., Class B 12,140 1,669,250
    3,050,192
Household Products & Wares — 0.8%
Kimberly-Clark Corp. 5,253 708,262
Insurance — 5.9%
Aflac, Inc. 28,137 1,251,252
Arthur J. Gallagher & Co. 5,707 706,013
Brown & Brown, Inc. 3,650 173,047
Chubb Ltd. 14,203 2,186,126
Reinsurance Group of America, Inc. 11,061 1,281,970
    5,598,408
Internet — 1.6%
F5 Networks, Inc.* 8,526 1,500,064
Leisure Time — 0.6%
Polaris, Inc. 6,322 602,360
Machinery — Construction & Mining — 1.1%
Oshkosh Corp. 12,407 1,067,870
 
111


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Core Value Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Machinery — Diversified — 0.6%
Crane Co. 6,984 $ 542,377
Media — 1.2%
Fox Corp., Class B 37,673 1,087,996
Miscellaneous Manufacturing — 2.0%
IMI PLC 67,310 1,072,613
Textron, Inc. 17,394 840,652
    1,913,265
Oil & Gas — 1.9%
Cimarex Energy Co. 14,602 547,721
ConocoPhillips 31,163 1,246,208
    1,793,929
Oil & Gas Services — 0.3%
Baker Hughes Co. 12,961 270,237
Packaging and Containers — 3.3%
Graphic Packaging Holding Co. 48,341 818,897
Packaging Corp. of America 5,779 796,982
Sonoco Products Co. 25,409 1,505,483
    3,121,362
Pharmaceuticals — 4.6%
Becton Dickinson and Co. 4,125 1,032,158
Cardinal Health, Inc. 22,421 1,200,869
Henry Schein, Inc.* 15,049 1,006,176
McKesson Corp. 6,057 1,053,433
    4,292,636
Retail — 4.6%
Advance Auto Parts, Inc. 9,026 1,421,685
Dollar Tree, Inc.* 8,428 910,561
Genuine Parts Co. 9,459 949,968
MSC Industrial Direct Co., Inc., Class A 12,970 1,094,538
    4,376,752
Savings & Loans — 0.6%
Capitol Federal Financial, Inc. 42,647 533,088
Semiconductors — 1.7%
Applied Materials, Inc. 12,850 1,108,955
Maxim Integrated Products, Inc. 5,034 446,264
Microchip Technology, Inc. 415 57,316
    1,612,535
Software — 2.0%
Cerner Corp. 17,152 1,346,089
Open Text Corp. 11,320 514,607
    1,860,696
Telecommunications — 1.0%
Rogers Communications, Inc., Class B 20,845 970,441
Textiles — 0.2%
Mohawk Industries, Inc.* 1,388 195,639
Transportation — 1.4%
Heartland Express, Inc. 40,304 729,502
  Number of
Shares
Value†
 
Transportation — (continued)
Norfolk Southern Corp. 2,613 $ 620,875
    1,350,377
TOTAL COMMON STOCKS
(Cost $75,973,624)
87,414,911
REAL ESTATE INVESTMENT TRUSTS — 4.0%
Diversified — 0.9%
Weyerhaeuser Co. 25,346 849,852
Healthcare — 2.1%
Healthcare Trust of America, Inc., Class A 19,707 542,731
Healthpeak Properties, Inc. 29,217 883,230
Welltower, Inc. 8,064 521,095
    1,947,056
Hotels & Resorts — 1.0%
MGM Growth Properties LLC, Class A 30,936 968,297
TOTAL REAL ESTATE INVESTMENT TRUSTS
(Cost $3,201,910)
  3,765,205
EXCHANGE TRADED FUNDS — 2.3%
Investment Companies — 2.3%
iShares Russell Mid-Cap Value ETF
(Cost $1,927,073)
22,471 2,178,788
     
SHORT-TERM INVESTMENTS — 0.6%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $596,973)
596,973 596,973
TOTAL INVESTMENTS — 99.9%
(Cost $81,699,580)
  $ 93,955,877
Other Assets & Liabilities — 0.1% 120,936
TOTAL NET ASSETS — 100.0%   $ 94,076,813

See Security Valuation Note.
* Non-income producing security.
ADR— American Depositary Receipt.
ASA— Allmennaksjeselskap.
ETF— Exchange-Traded Fund.
LLC— Limited Liability Company.
N.V.— Naamloze Vennootschap.
PLC— Public Limited Company.
S.A.— Societe Anonyme.
    
 
112


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Core Value Fund
Country Weightings as of 12/31/2020††
United States 84%
United Kingdom 5
Switzerland 3
Netherlands 2
Canada 2
France 1
Japan 1
Other 2
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Aerospace & Defense $ 1,932,370 $ 1,033,853 $ 898,517 $—
Airlines 1,592,104 1,592,104
Auto Manufacturers 2,503,822 2,503,822
Auto Parts & Equipment 1,347,730 1,347,730
Banks 9,213,239 9,213,239
Building Materials 1,294,736 1,294,736
Computers 1,252,172 1,252,172
Diversified Financial Services 2,315,949 2,315,949
Electric 5,885,459 5,885,459
Electrical Components & Equipment 2,198,280 2,198,280
Electronics 4,030,647 4,030,647
Environmental Control 1,490,724 1,490,724
Food 7,393,860 4,997,088 2,396,772
Food Service 1,036,705 1,036,705
Forest Products & Paper 1,238,140 1,238,140
Gas 1,560,203 1,560,203
Healthcare Products 4,680,285 4,680,285
Healthcare Services 3,050,192 3,050,192
Household Products & Wares 708,262 708,262
Insurance 5,598,408 5,598,408
Internet 1,500,064 1,500,064
Leisure Time 602,360 602,360
Machinery — Construction & Mining 1,067,870 1,067,870
Machinery — Diversified 542,377 542,377
Media 1,087,996 1,087,996
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Miscellaneous Manufacturing $ 1,913,265 $ 840,652 $ 1,072,613 $—
Oil & Gas 1,793,929 1,793,929
Oil & Gas Services 270,237 270,237
Packaging and Containers 3,121,362 3,121,362
Pharmaceuticals 4,292,636 4,292,636
Retail 4,376,752 4,376,752
Savings & Loans 533,088 533,088
Semiconductors 1,612,535 1,612,535
Software 1,860,696 1,860,696
Telecommunications 970,441 970,441
Textiles 195,639 195,639
Transportation 1,350,377 1,350,377
Total Common Stocks 87,414,911 80,772,164 6,642,747
Real Estate Investment Trusts 3,765,205 3,765,205
Exchange Traded Funds 2,178,788 2,178,788
Short-Term Investments 596,973 596,973
Total Investments $ 93,955,877 $ 87,313,130 $ 6,642,747 $
Other Financial Instruments(1)        
Forward Foreign Currency Contracts $ 9,241 $ $ 9,241 $—
Total Assets—Other Financial Instruments $ 9,241 $ $ 9,241 $
LIABILITIES TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Other Financial Instruments(1)        
Forward Foreign Currency Contracts $(57,919) $— $(57,919) $—
Total Liabilities—Other Financial Instruments $ (57,919) $ $ (57,919) $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
 
113


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Mid Core Value Fund
Open forward foreign currency contracts held by Mid Core Value Fund at December 31, 2020 were as follows:
Open forward foreign currency contracts                    
  Currency   Counterparty   Settlement
Date
  Foreign
Currency
Contract
  Forward
Rate
  U.S.
Contract
Amount
  U.S.
Contract
Value
  Unrealized
Foreign
Exchange
Gain
  Unrealized
Foreign
Exchange
Loss
Buy Japanese Yen   Bank of America   3/31/2021   2,075,389   103.14350   $20,048   $20,121   $73   $—
Sell Japanese Yen   Bank of America   3/31/2021   (61,783,113)   103.14350   (595,729)   (599,001)     (3,272)
Buy Euro   Credit Suisse   3/31/2021   63,472   0.81687   77,430   77,701   271  
Sell Euro   Credit Suisse   3/31/2021   (1,919,516)   0.81687   (2,356,972)   (2,349,834)   7,138  
Sell Norwegian Krone   Goldman Sachs   3/31/2021   (5,926,888)   8.57727   (682,171)   (690,999)     (8,828)
Buy Pound Sterling   JPMorgan   3/31/2021   58,016   0.73085   77,623   79,382   1,759  
Sell Pound Sterling   JPMorgan   3/31/2021   (2,078,365)   0.73085   (2,798,731)   (2,843,765)     (45,034)
Sell Canadian Dollar   Morgan Stanley   3/31/2021   (1,059,906)   1.27260   (832,081)   (832,866)     (785)
  Total                           $9,241   $(57,919)
The accompanying notes are an integral part of these financial statements.
114


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
SMID Cap Growth Fund
  Number of
Shares
Value†
COMMON STOCKS — 100.3%
Aerospace & Defense — 3.3%
Aerojet Rocketdyne Holdings, Inc.* 22,312 $ 1,179,189
HEICO Corp., Class A 5,965 698,263
Teledyne Technologies, Inc.* 3,252 1,274,719
    3,152,171
Apparel — 1.3%
Deckers Outdoor Corp.* 4,319 1,238,603
Auto Parts & Equipment — 0.5%
Fox Factory Holding Corp.* 4,999 528,444
Beverages — 0.8%
The Boston Beer Co., Inc., Class A* 757 752,678
Biotechnology — 12.0%
Allogene Therapeutics, Inc.* 10,684 269,664
Alnylam Pharmaceuticals, Inc.* 5,479 712,106
Arena Pharmaceuticals, Inc.* 6,858 526,900
Argenx S.E., ADR* 2,167 637,293
Atea Pharmaceuticals, Inc.* 7,365 307,710
Beam Therapeutics, Inc.* 22,113 1,805,305
Berkeley Lights, Inc.* 4,444 397,338
Certara, Inc.* 7,503 253,001
Exelixis, Inc.* 36,556 733,679
Guardant Health, Inc.* 14,964 1,928,560
Halozyme Therapeutics, Inc.* 28,384 1,212,281
Relay Therapeutics, Inc.* 6,902 286,847
Seer, Inc.* 3,740 209,964
Turning Point Therapeutics, Inc.* 3,799 462,908
Twist Bioscience Corp.* 1,925 271,983
Ultragenyx Pharmaceutical, Inc.* 6,568 909,208
Y-mAbs Therapeutics, Inc.* 11,262 557,582
    11,482,329
Building Materials — 1.5%
Lennox International, Inc. 1,998 547,392
The AZEK Co., Inc* 22,161 852,091
    1,399,483
Chemicals — 2.5%
Ashland Global Holdings, Inc. 9,624 762,221
RPM International, Inc. 17,569 1,594,914
    2,357,135
Commercial Services — 4.0%
Avalara, Inc.* 10,224 1,685,835
Booz Allen Hamilton Holding Corp. 13,179 1,148,945
Shift4 Payments, Inc., Class A* 13,782 1,039,163
    3,873,943
Computers — 3.9%
Lumentum Holdings, Inc.* 6,399 606,625
Rapid7, Inc.* 14,979 1,350,507
Varonis Systems, Inc.* 4,280 700,251
Zscaler, Inc.* 5,553 1,108,989
    3,766,372
  Number of
Shares
Value†
 
Distribution & Wholesale — 2.2%
Pool Corp. 2,940 $ 1,095,150
SiteOne Landscape Supply, Inc.* 6,153 976,050
    2,071,200
Diversified Financial Services — 0.4%
Tradeweb Markets, Inc., Class A 6,072 379,196
Electrical Components & Equipment — 3.0%
Generac Holdings, Inc.* 7,734 1,758,789
Novanta, Inc.* 9,579 1,132,429
    2,891,218
Electronics — 4.1%
Allegion PLC 8,998 1,047,187
Badger Meter, Inc. 10,612 998,165
PerkinElmer, Inc. 13,018 1,868,083
    3,913,435
Energy-Alternate Sources — 1.1%
Enphase Energy, Inc.* 6,069 1,064,927
Engineering & Construction — 0.9%
Jacobs Engineering Group, Inc. 7,799 849,779
Entertainment — 0.5%
Churchill Downs, Inc. 2,553 497,299
Food — 0.4%
Beyond Meat, Inc.* 2,901 362,625
Hand & Machine Tools — 1.6%
Colfax Corp.* 40,935 1,565,354
Healthcare Products — 9.2%
10X Genomics, Inc., Class A* 5,779 818,306
Bio-Techne Corp. 4,395 1,395,632
Castle Biosciences, Inc.* 8,301 557,412
iRhythm Technologies, Inc.* 2,423 574,760
Neogen Corp.* 6,254 495,942
Nevro Corp.* 5,232 905,659
Repligen Corp.* 4,614 884,181
Tandem Diabetes Care, Inc.* 8,933 854,710
Teleflex, Inc. 2,672 1,099,715
West Pharmaceutical Services, Inc. 4,305 1,219,650
    8,805,967
Healthcare Services — 1.8%
American Well Corp., Class A* 14,728 373,060
Molina Healthcare, Inc.* 6,282 1,336,056
    1,709,116
Household Products & Wares — 1.5%
Avery Dennison Corp. 4,290 665,422
The Scotts Miracle-Gro Co. 4,012 798,950
    1,464,372
Insurance — 0.7%
Kinsale Capital Group, Inc. 3,422 684,845
 
115


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
SMID Cap Growth Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Internet — 4.2%
Anaplan, Inc.* 6,816 $ 489,729
Etsy, Inc.* 7,733 1,375,778
Zendesk, Inc.* 14,949 2,139,501
    4,005,008
Leisure Time — 1.5%
Brunswick Corp. 10,946 834,523
YETI Holdings, Inc.* 9,534 652,793
    1,487,316
Lodging — 0.9%
Choice Hotels International, Inc. 8,068 861,098
Machinery — Diversified — 2.6%
Chart Industries, Inc.* 4,110 484,117
IDEX Corp. 5,845 1,164,324
Xylem, Inc. 8,024 816,763
    2,465,204
Metal Fabricate/Hardware — 1.2%
RBC Bearings, Inc.* 6,625 1,186,140
Pharmaceuticals — 4.2%
Agios Pharmaceuticals, Inc.* 16,692 723,264
Elanco Animal Health, Inc.* 26,665 817,816
Neurocrine Biosciences, Inc.* 12,379 1,186,527
Sarepta Therapeutics, Inc.* 7,803 1,330,334
    4,057,941
Retail — 6.8%
Five Below, Inc.* 7,318 1,280,504
Floor & Decor Holdings, Inc., Class A* 13,142 1,220,235
Freshpet, Inc.* 7,270 1,032,267
Ollie's Bargain Outlet Holdings, Inc.* 4,910 401,491
RH* 2,264 1,013,185
Texas Roadhouse, Inc. 11,165 872,656
Vroom, Inc.* 7,185 294,369
Wingstop, Inc. 3,140 416,207
    6,530,914
Semiconductors — 7.9%
Allegro MicroSystems, Inc.* 19,235 512,805
Brooks Automation, Inc. 6,240 423,384
Entegris, Inc. 17,268 1,659,455
Lattice Semiconductor Corp.* 12,120 555,339
MKS Instruments, Inc. 8,820 1,326,969
Monolithic Power Systems, Inc. 4,449 1,629,357
Teradyne, Inc. 12,426 1,489,753
    7,597,062
Software — 13.1%
Bandwidth, Inc., Class A* 4,316 663,240
Bill.com Holdings, Inc.* 5,848 798,252
Blackline, Inc.* 9,447 1,260,041
Cloudflare, Inc., Class A* 12,946 983,767
Dynatrace, Inc.* 33,215 1,437,213
Elastic N.V.* 10,677 1,560,230
HubSpot, Inc.* 4,973 1,971,496
  Number of
Shares
Value†
 
Software — (continued)
JFrog Ltd.* 10,757 $ 675,862
MongoDB, Inc.* 3,943 1,415,695
nCino, Inc.* 5,244 379,718
Sumo Logic, Inc.* 18,861 539,047
Vertex, Inc., Class A* 25,821 899,862
    12,584,423
Transportation — 0.7%
XPO Logistics, Inc.* 5,867 699,346
TOTAL COMMON STOCKS
(Cost $67,983,571)
96,284,943
     
SHORT-TERM INVESTMENTS — 1.1%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $1,063,569)
1,063,569 1,063,569
TOTAL INVESTMENTS — 101.4%
(Cost $69,047,140)
  $ 97,348,512
Other Assets & Liabilities — (1.4)% (1,338,702)
TOTAL NET ASSETS — 100.0%   $ 96,009,810

See Security Valuation Note.
* Non-income producing security.
ADR— American Depositary Receipt.
N.V.— Naamloze Vennootschap.
PLC— Public Limited Company.
S.E.— Societas Europaea.
Country Weightings as of 12/31/2020††
United States 97%
Ireland 1
Israel 1
Netherlands 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $96,284,943 $96,284,943 $— $—
Short-Term Investments 1,063,569 1,063,569
Total Investments $ 97,348,512 $ 97,348,512 $ $
 
116


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
SMID Cap Growth Fund
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
117


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
SMID Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — 92.6%
Aerospace & Defense — 1.0%
AAR Corp. 15,960 $ 578,071
Airlines — 2.0%
Alaska Air Group, Inc. 10,413 541,476
SkyWest, Inc. 15,650 630,852
    1,172,328
Apparel — 5.1%
Kontoor Brands, Inc. 14,870 603,127
Ralph Lauren Corp. 7,510 779,088
Skechers U.S.A., Inc., Class A* 11,640 418,342
Steven Madden Ltd. 17,720 625,870
Tapestry, Inc. 16,900 525,252
    2,951,679
Auto Parts & Equipment — 3.4%
Cooper Tire & Rubber Co. 11,741 475,510
Dana, Inc. 38,712 755,658
Lear Corp. 4,623 735,196
    1,966,364
Banks — 11.6%
Associated Banc-Corp. 23,223 395,952
BankUnited, Inc. 22,875 795,593
Comerica, Inc. 12,845 717,522
First Citizens BancShares, Inc., Class A 1,591 913,664
Synovus Financial Corp. 24,520 793,712
Texas Capital Bancshares, Inc.* 12,357 735,242
Umpqua Holdings Corp. 33,494 507,099
Webster Financial Corp. 17,492 737,288
Wintrust Financial Corp. 8,260 504,603
Zions Bancorp NA 13,101 569,107
    6,669,782
Beverages — 0.6%
Primo Water Corp. 23,918 375,034
Building Materials — 0.8%
Masonite International Corp.* 4,954 487,176
Chemicals — 3.0%
GCP Applied Technologies, Inc.* 13,718 324,431
Innospec, Inc. 3,387 307,302
Orion Engineered Carbons S.A. 35,206 603,431
Westlake Chemical Corp. 6,469 527,870
    1,763,034
Commercial Services — 2.4%
Robert Half International, Inc. 11,849 740,326
United Rentals, Inc.* 2,730 633,114
    1,373,440
Computers — 2.6%
Genpact Ltd. 10,542 436,017
NCR Corp.* 19,441 730,398
NetScout Systems, Inc.* 12,339 338,336
    1,504,751
  Number of
Shares
Value†
 
Diversified Financial Services — 3.4%
Moelis & Co., Class A 16,379 $ 765,882
OneMain Holdings, Inc. 10,624 511,652
Stifel Financial Corp. 13,710 691,806
    1,969,340
Electric — 1.3%
IDACORP, Inc. 6,219 597,211
PNM Resources, Inc. 2,719 131,953
    729,164
Electrical Components & Equipment — 1.5%
Belden, Inc. 13,994 586,349
EnerSys 3,516 292,039
    878,388
Electronics — 1.9%
Arrow Electronics, Inc.* 5,620 546,826
Vishay Intertechnology, Inc. 25,703 532,309
    1,079,135
Engineering & Construction — 1.4%
AECOM* 16,900 841,282
Food — 3.0%
Nomad Foods Ltd.* 19,661 499,782
The Hain Celestial Group, Inc.* 19,128 767,989
US Foods Holding Corp.* 13,502 449,752
    1,717,523
Gas — 0.8%
Southwest Gas Holdings, Inc. 7,832 475,794
Hand & Machine Tools — 3.1%
Kennametal, Inc. 21,234 769,520
Regal Beloit Corp. 8,434 1,035,780
    1,805,300
Healthcare Services — 1.6%
MEDNAX, Inc.* 25,910 635,831
Molina Healthcare, Inc.* 1,347 286,480
    922,311
Home Builders — 2.9%
KB Home 15,890 532,633
PulteGroup, Inc. 16,930 730,021
Taylor Morrison Home Corp.* 16,364 419,737
    1,682,391
Home Furnishings — 1.1%
Herman Miller, Inc. 18,350 620,230
Insurance — 7.0%
American Financial Group, Inc. 6,488 568,479
Essent Group Ltd. 8,968 387,418
Everest Re Group Ltd. 3,217 753,067
Reinsurance Group of America, Inc. 5,125 593,987
Selective Insurance Group, Inc. 6,960 466,181
The Hanover Insurance Group, Inc. 5,234 611,959
 
118


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
SMID Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Insurance — (continued)
Voya Financial, Inc. 11,000 $ 646,910
    4,028,001
Internet — 0.8%
Criteo S.A., ADR* 21,798 447,077
Iron & Steel — 2.2%
Carpenter Technology Corp. 15,267 444,575
Reliance Steel & Aluminum Co. 6,911 827,592
    1,272,167
Leisure Time — 1.1%
Brunswick Corp. 8,027 611,978
Lodging — 1.0%
Hilton Grand Vacations, Inc.* 18,730 587,186
Machinery — Construction & Mining — 1.6%
Oshkosh Corp. 10,600 912,342
Machinery — Diversified — 1.2%
Crane Co. 3,112 241,678
The Middleby Corp.* 2,160 278,467
Welbilt, Inc.* 11,249 148,487
    668,632
Media — 0.3%
Houghton Mifflin Harcourt Co.* 50,599 168,495
Miscellaneous Manufacturing — 2.4%
Hillenbrand, Inc. 15,220 605,756
Trinseo S.A. 14,877 761,851
    1,367,607
Oil & Gas — 2.1%
Cimarex Energy Co. 11,524 432,265
HollyFrontier Corp. 29,261 756,397
    1,188,662
Oil & Gas Services — 1.5%
Dril-Quip, Inc.* 15,119 447,825
MRC Global, Inc.* 59,803 396,494
    844,319
Packaging and Containers — 2.4%
Graphic Packaging Holding Co. 41,050 695,387
Sealed Air Corp. 14,602 668,626
    1,364,013
Retail — 3.7%
Foot Locker, Inc. 18,131 733,218
Papa John's International, Inc. 4,650 394,552
The Gap, Inc. 25,940 523,729
Williams-Sonoma, Inc. 4,564 464,798
    2,116,297
Savings & Loans — 1.3%
Sterling Bancorp 41,842 752,319
  Number of
Shares
Value†
 
Semiconductors — 1.6%
Kulicke & Soffa Industries, Inc. 16,901 $ 537,621
MaxLinear, Inc.* 10,968 418,868
    956,489
Software — 2.7%
Change Healthcare, Inc.* 47,380 883,637
CommVault Systems, Inc.* 12,293 680,663
    1,564,300
Telecommunications — 0.8%
Amdocs Ltd. 6,611 468,918
Transportation — 3.1%
Knight-Swift Transportation Holdings, Inc. 20,242 846,520
XPO Logistics, Inc.* 7,933 945,614
    1,792,134
Trucking and Leasing — 1.3%
GATX Corp. 8,800 731,984
TOTAL COMMON STOCKS
(Cost $45,723,596)
53,405,437
REAL ESTATE INVESTMENT TRUSTS — 8.4%
Apartments — 2.2%
American Campus Communities, Inc. 13,712 586,462
Camden Property Trust 7,030 702,438
    1,288,900
Healthcare — 1.0%
Physicians Realty Trust 33,855 602,619
Hotels & Resorts — 2.0%
MGM Growth Properties LLC, Class A 21,979 687,943
RLJ Lodging Trust 33,562 474,902
    1,162,845
Industrial — 1.1%
STAG lndustrial, Inc. 19,535 611,836
Office Property — 0.9%
Cousins Properties, Inc. 15,130 506,855
Storage & Warehousing — 1.2%
CubeSmart 19,704 662,252
TOTAL REAL ESTATE INVESTMENT TRUSTS
(Cost $4,399,531)
  4,835,307
    
 
119


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
SMID Cap Value Fund
  Number ofShares Value†
SHORT-TERM INVESTMENTS — 1.6%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $950,743)
950,743 $ 950,743
TOTAL INVESTMENTS — 102.6%
(Cost $51,073,870)
  $ 59,191,487
Other Assets & Liabilities — (2.6)% (1,519,752)
TOTAL NET ASSETS — 100.0%   $ 57,671,735

See Security Valuation Note.
* Non-income producing security.
ADR— American Depositary Receipt.
LLC— Limited Liability Company.
NA— National Association.
S.A.— Societe Anonyme.
Country Weightings as of 12/31/2020††
United States 95%
Bermuda 1
Luxembourg 1
Singapore 1
United Kingdom 1
France 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $53,405,437 $53,405,437 $— $—
Real Estate Investment Trusts 4,835,307 4,835,307
Short-Term Investments 950,743 950,743
Total Investments $ 59,191,487 $ 59,191,487 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
120


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Growth Fund
  Number of
Shares
Value†
COMMON STOCKS — 100.9%
Advertising — 1.2%
The Trade Desk, Inc., Class A* 2,181 $ 1,746,981
Aerospace & Defense — 0.0%
HEICO Corp., Class A 442 51,740
Apparel — 0.4%
Carter's, Inc. 6,203 583,516
Auto Parts & Equipment — 0.8%
Visteon Corp.* 9,542 1,197,712
Banks — 0.6%
Walker & Dunlop, Inc. 9,892 910,262
Biotechnology — 7.5%
ACADIA Pharmaceuticals, Inc.* 10,589 566,088
Amicus Therapeutics, Inc.* 37,694 870,354
Ascendis Pharma A/S, ADR* 4,277 713,318
Emergent BioSolutions, Inc.* 7,913 709,005
Fate Therapeutics, Inc.* 13,420 1,220,281
FibroGen, Inc.* 12,694 470,820
Global Blood Therapeutics, Inc.* 14,265 617,817
Insmed, Inc.* 23,470 781,316
Ligand Pharmaceuticals, Inc.* 11,947 1,188,129
NeoGenomics, Inc.* 34,978 1,883,216
Relay Therapeutics, Inc.* 10,429 433,429
Rocket Pharmaceuticals, Inc.* 9,122 500,251
Sage Therapeutics, Inc.* 7,726 668,376
    10,622,400
Building Materials — 0.5%
Summit Materials, Inc., Class A* 33,883 680,371
Chemicals — 2.7%
H.B. Fuller Co. 11,839 614,207
Rogers Corp.* 5,199 807,353
Sensient Technologies Corp. 32,479 2,395,976
    3,817,536
Commercial Services — 7.7%
Alarm.com Holdings, Inc.* 13,062 1,351,264
Avalara, Inc.* 10,000 1,648,900
Cimpress PLC* 4,661 408,956
Euronet Worldwide, Inc.* 10,608 1,537,312
HealthEquity, Inc.* 10,476 730,282
Shift4 Payments, Inc., Class A* 4,692 353,777
Stride, Inc.* 33,558 712,436
Terminix Global Holdings, Inc.* 43,920 2,240,359
TriNet Group, Inc.* 13,350 1,076,010
WEX, Inc.* 4,755 967,785
    11,027,081
Computers — 2.8%
Cubic Corp. 12,641 784,247
MAXIMUS, Inc. 8,732 639,095
NCR Corp.* 28,054 1,053,989
WNS Holdings Ltd., ADR* 21,796 1,570,402
    4,047,733
  Number of
Shares
Value†
 
Diversified Financial Services — 2.7%
Cboe Global Markets, Inc. 10,076 $ 938,277
LendingTree, Inc.* 3,283 898,853
LPL Financial Holdings, Inc. 19,745 2,057,824
    3,894,954
Electric — 0.5%
NRG Energy, Inc. 20,197 758,397
Electrical Components & Equipment — 1.5%
EnerSys 14,201 1,179,535
Novanta, Inc.* 7,762 917,624
    2,097,159
Electronics — 3.2%
Brady Corp., Class A 30,642 1,618,511
Itron, Inc.* 10,317 989,400
National Instruments Corp. 16,026 704,182
OSI Systems, Inc.* 12,572 1,171,962
    4,484,055
Engineering & Construction — 0.7%
frontdoor, Inc.* 20,377 1,023,129
Entertainment — 0.4%
Manchester United PLC, Class A 30,270 506,720
Environmental Control — 0.5%
Montrose Environmental Group, Inc.* 21,068 652,265
Food — 2.8%
BellRing Brands, Inc., Class A* 25,317 615,456
Hostess Brands, Inc.* 65,992 966,123
Laird Superfood, Inc.* 33,521 1,586,214
Premium Brands Holdings Corp. 9,888 782,479
    3,950,272
Healthcare Products — 9.1%
Bio-Techne Corp. 4,204 1,334,980
Bruker Corp. 27,158 1,470,063
Cantel Medical Corp. 11,514 907,994
Eargo, Inc.* 8,925 400,019
Glaukos Corp.* 14,265 1,073,584
Globus Medical, Inc., Class A* 27,069 1,765,440
ICU Medical, Inc.* 5,479 1,175,191
Integra LifeSciences Holdings Corp.* 36,521 2,370,943
Pulmonx Corp.* 11,222 774,542
Quidel Corp.* 2,218 398,464
STERIS PLC 7,215 1,367,531
    13,038,751
Healthcare Services — 3.7%
Catalent, Inc.* 40,177 4,181,221
Chemed Corp. 2,017 1,074,274
    5,255,495
Holding Companies — 4.2%
QuantumScape Corp.* 71,157 6,009,209
 
121


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Growth Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Home Builders — 0.5%
Thor Industries, Inc. 7,830 $ 728,112
Home Furnishings — 1.1%
The Lovesac Co.* 36,475 1,571,708
Household Products & Wares — 0.8%
Helen of Troy Ltd.* 4,186 930,087
Ontex Group N.V.* 17,174 230,886
    1,160,973
Insurance — 0.8%
RLI Corp. 10,914 1,136,693
Internet — 2.0%
ChannelAdvisor Corp.* 47,532 759,561
Zendesk, Inc.* 14,599 2,089,409
    2,848,970
Machinery — Diversified — 4.4%
CSW Industrials, Inc. 16,049 1,796,044
Gates Industrial Corp. PLC* 38,642 493,072
Hydrofarm Holdings Group, Inc.* 9,940 522,645
Kornit Digital Ltd.* 19,999 1,782,511
Nordson Corp. 5,752 1,155,864
Westinghouse Air Brake Technologies Corp. 6,472 473,750
    6,223,886
Metal Fabricate/Hardware — 1.2%
Rexnord Corp. 42,522 1,679,194
Miscellaneous Manufacturing — 2.6%
Carlisle Cos., Inc. 9,638 1,505,263
ITT, Inc. 16,820 1,295,476
Standex International Corp. 11,346 879,542
    3,680,281
Packaging and Containers — 2.3%
Crown Holdings, Inc.* 32,153 3,221,731
Pharmaceuticals — 4.0%
Eagle Pharmaceuticals, Inc.* 12,133 565,034
GW Pharmaceuticals PLC, ADR* 5,757 664,415
Heska Corp.* 4,870 709,315
Neurocrine Biosciences, Inc.* 11,679 1,119,432
Prestige Consumer Healthcare, Inc.* 22,499 784,540
Rhythm Pharmaceuticals, Inc.* 18,833 559,905
Sarepta Therapeutics, Inc.* 4,391 748,622
uniQure N.V.* 6,318 228,269
Vaxcyte, Inc.* 13,029 346,181
    5,725,713
Retail — 2.1%
Casey's General Stores, Inc. 4,556 813,793
National Vision Holdings, Inc.* 22,083 1,000,139
Vroom, Inc.* 7,724 316,452
Williams-Sonoma, Inc. 7,718 786,001
    2,916,385
  Number of
Shares
Value†
 
Semiconductors — 3.1%
Cree, Inc.* 9,098 $ 963,478
Entegris, Inc. 19,450 1,869,145
ON Semiconductor Corp.* 49,845 1,631,427
    4,464,050
Software — 15.4%
ACI Worldwide, Inc.* 22,798 876,127
Blackbaud, Inc. 21,520 1,238,691
Broadridge Financial Solutions, Inc. 14,738 2,257,862
Clarivate PLC* 61,641 1,831,354
Dynatrace, Inc.* 18,968 820,745
Envestnet, Inc.* 13,851 1,139,799
Guidewire Software, Inc.* 7,065 909,477
Intelligent Systems Corp.* 19,684 789,525
J2 Global, Inc.* 11,359 1,109,661
LivePerson, Inc.* 25,717 1,600,369
Oak Street Health, Inc.* 6,647 406,531
RealPage, Inc.* 20,253 1,766,872
Sailpoint Technologies Holdings, Inc.* 33,421 1,779,334
SS&C Technologies Holdings, Inc. 35,763 2,601,758
The Descartes Systems Group, Inc.* 33,632 1,967,085
Vertex, Inc., Class A* 7,480 260,678
Yext, Inc.* 38,028 597,800
    21,953,668
Telecommunications — 4.6%
Nice Ltd., ADR* 15,190 4,306,973
PagerDuty, Inc.* 19,824 826,661
Vonage Holdings Corp.* 115,238 1,483,689
    6,617,323
Transportation — 2.5%
CryoPort, Inc.* 30,785 1,350,846
Saia, Inc.* 12,543 2,267,774
    3,618,620
TOTAL COMMON STOCKS
(Cost $78,359,539)
143,903,045
REAL ESTATE INVESTMENT TRUSTS — 0.7%
Diversified — 0.7%
Lamar Advertising Co., Class A
(Cost $663,692)
12,095 1,006,546
     
SHORT-TERM INVESTMENTS — 0.6%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $785,316)
785,316 785,316
TOTAL INVESTMENTS — 102.2%
(Cost $79,808,547)
  $ 145,694,907
Other Assets & Liabilities — (2.2)% (3,099,932)
TOTAL NET ASSETS — 100.0%   $ 142,594,975
 
122


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Growth Fund

See Security Valuation Note.
* Non-income producing security.
A/S— Aktieselskab.
ADR— American Depositary Receipt.
N.V.— Naamloze Vennootschap.
PLC— Public Limited Company.
Country Weightings as of 12/31/2020††
United States 90%
Israel 4
United Kingdom 2
Canada 2
India 1
Denmark 1
Total 100%
†† % of total investments as of December 31, 2020.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Advertising $ 1,746,981 $ 1,746,981 $ $—
Aerospace & Defense 51,740 51,740
Apparel 583,516 583,516
Auto Parts & Equipment 1,197,712 1,197,712
Banks 910,262 910,262
Biotechnology 10,622,400 10,622,400
Building Materials 680,371 680,371
Chemicals 3,817,536 3,817,536
Commercial Services 11,027,081 11,027,081
Computers 4,047,733 4,047,733
Diversified Financial Services 3,894,954 3,894,954
Electric 758,397 758,397
Electrical Components & Equipment 2,097,159 2,097,159
Electronics 4,484,055 4,484,055
Engineering & Construction 1,023,129 1,023,129
Entertainment 506,720 506,720
Environmental Control 652,265 652,265
Food 3,950,272 3,950,272
Healthcare Products 13,038,751 13,038,751
Healthcare Services 5,255,495 5,255,495
Holding Companies 6,009,209 6,009,209
Home Builders 728,112 728,112
Home Furnishings 1,571,708 1,571,708
Household Products & Wares 1,160,973 930,087 230,886
Insurance 1,136,693 1,136,693
Internet 2,848,970 2,848,970
Machinery — Diversified 6,223,886 6,223,886
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Metal Fabricate/Hardware $ 1,679,194 $ 1,679,194 $ $—
Miscellaneous Manufacturing 3,680,281 3,680,281
Packaging and Containers 3,221,731 3,221,731
Pharmaceuticals 5,725,713 5,725,713
Retail 2,916,385 2,916,385
Semiconductors 4,464,050 4,464,050
Software 21,953,668 21,953,668
Telecommunications 6,617,323 6,617,323
Transportation 3,618,620 3,618,620
Total Common Stocks 143,903,045 137,662,950 6,240,095
Real Estate Investment Trusts 1,006,546 1,006,546
Short-Term Investments 785,316 785,316
Total Investments $ 145,694,907 $ 139,454,812 $ 6,240,095 $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
123


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — 90.0%
Aerospace & Defense — 1.4%
AAR Corp. 26,595 $ 963,271
Ducommun, Inc.* 9,372 503,276
Kaman Corp. 17,908 1,023,084
    2,489,631
Agriculture — 1.4%
Darling Ingredients, Inc.* 44,655 2,575,700
Airlines — 0.6%
Allegiant Travel Co. 2,768 523,816
SkyWest, Inc. 14,763 595,097
    1,118,913
Apparel — 2.1%
Capri Holdings Ltd.* 24,652 1,035,384
Crocs, Inc.* 12,747 798,727
Deckers Outdoor Corp.* 309 88,615
Tapestry, Inc. 30,650 952,602
Wolverine World Wide, Inc. 25,989 812,156
    3,687,484
Auto Manufacturers — 0.2%
Navistar International Corp.* 5,533 243,231
Workhorse Group, Inc.* 9,779 193,428
    436,659
Auto Parts & Equipment — 1.5%
Adient PLC* 46,804 1,627,375
Cooper Tire & Rubber Co. 13,907 563,233
Visteon Corp.* 3,957 496,683
    2,687,291
Banks — 15.5%
Alerus Financial Corp. 6,140 168,052
Amalgamated Bank, Class A 12,122 166,556
Ameris Bancorp 36,704 1,397,321
Atlantic Union Bankshares Corp. 34,427 1,134,025
BancorpSouth Bank 43,150 1,184,036
Bank of Hawaii Corp. 3,908 299,431
Banner Corp. 24,106 1,123,099
Bryn Mawr Bank Corp. 2,656 81,260
Columbia Banking System, Inc. 36,533 1,311,535
Community Bank System, Inc. 19,280 1,201,337
ConnectOne Bancorp, Inc. 30,313 599,894
CVB Financial Corp. 56,661 1,104,889
FB Financial Corp. 25,762 894,714
First Financial Bankshares, Inc. 28,944 1,047,049
First Merchants Corp. 32,847 1,228,806
First Midwest Bancorp, Inc. 23,480 373,802
German American Bancorp, Inc. 14,837 490,956
Glacier Bancorp, Inc. 33,848 1,557,346
Great Western Bancorp, Inc. 21,480 448,932
Heritage Financial Corp. 22,005 514,697
Home BancShares, Inc. 42,047 819,076
Independent Bank Corp. 17,382 1,269,581
Lakeland Financial Corp. 20,600 1,103,748
PacWest Bancorp 17,163 435,940
  Number of
Shares
Value†
 
Banks — (continued)
Pinnacle Financial Partners, Inc. 13,832 $ 890,781
Renasant Corp. 38,847 1,308,367
Sandy Spring Bancorp, Inc. 6,077 195,619
South State Corp. 22,166 1,602,602
The First of Long Island Corp. 6,702 119,631
Towne Bank 20,996 492,986
TriCo Bancshares 19,313 681,363
United Community Banks, Inc. 49,563 1,409,572
Walker & Dunlop, Inc. 13,303 1,224,142
    27,881,145
Beverages — 0.0%
Primo Water Corp. 4,377 68,631
Biotechnology — 0.4%
Arena Pharmaceuticals, Inc.* 7,590 583,140
Emergent BioSolutions, Inc.* 2,360 211,456
    794,596
Building Materials — 1.0%
Gibraltar Industries, Inc.* 10,456 752,205
Griffon Corp. 16,206 330,278
Summit Materials, Inc., Class A* 27,646 555,132
The AZEK Co., Inc* 3,607 138,689
    1,776,304
Chemicals — 1.5%
H.B. Fuller Co. 12,811 664,635
Kraton Corp.* 12,919 359,019
Quaker Chemical Corp. 1,212 307,109
Rogers Corp.* 6,904 1,072,122
Stepan Co. 707 84,359
Tronox Holdings PLC, Class A 13,284 194,212
    2,681,456
Coal — 0.1%
Warrior Met Coal, Inc. 7,778 165,827
Commercial Services — 3.4%
ABM Industries, Inc. 20,020 757,557
AMN Healthcare Services, Inc.* 8,841 603,398
ASGN, Inc.* 16,230 1,355,692
FTI Consulting, Inc.* 2,579 288,126
Green Dot Corp., Class A* 11,139 621,556
Herc Holdings, Inc.* 15,325 1,017,733
ICF International, Inc. 6,033 448,433
Laureate Education, Inc., Class A* 23,064 335,812
Rent-A-Center, Inc. 16,478 630,943
    6,059,250
Computers — 0.5%
Cubic Corp. 3,603 223,530
NetScout Systems, Inc.* 24,653 675,985
    899,515
Distribution & Wholesale — 1.9%
Avient Corp. 53,564 2,157,558
 
124


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Distribution & Wholesale — (continued)
Resideo Technologies, Inc.* 58,704 $ 1,248,047
    3,405,605
Diversified Financial Services — 2.6%
Hamilton Lane, Inc., Class A 9,311 726,724
Houlihan Lokey, Inc. 9,434 634,248
Oportun Financial Corp.* 9,221 178,611
PJT Partners, Inc., Class A 8,490 638,872
PROG Holdings, Inc. 11,619 625,916
Stifel Financial Corp. 34,931 1,762,618
Virtu Financial, Inc., Class A 7,890 198,591
    4,765,580
Electric — 2.6%
ALLETE, Inc. 16,568 1,026,222
Clearway Energy, Inc., Class A 9,796 289,472
IDACORP, Inc. 6,609 634,662
MGE Energy, Inc. 11,793 825,864
PNM Resources, Inc. 12,842 623,222
Portland General Electric Co. 28,502 1,219,031
    4,618,473
Electronics — 1.4%
Brady Corp., Class A 11,012 581,654
FARO Technologies, Inc.* 9,553 674,728
Knowles Corp.* 25,772 474,978
TTM Technologies, Inc.* 53,480 737,757
    2,469,117
Energy-Alternate Sources — 0.3%
Renewable Energy Group, Inc.* 6,919 490,004
Engineering & Construction — 3.7%
AECOM* 9,290 462,456
EMCOR Group, Inc. 10,403 951,458
KBR, Inc. 69,623 2,153,440
MasTec, Inc.* 24,163 1,647,433
TopBuild Corp.* 3,684 678,151
WillScot Mobile Mini Holdings Corp.* 36,193 838,592
    6,731,530
Entertainment — 2.7%
Caesars Entertainment, Inc.* 14,135 1,049,806
IMAX Corp.* 26,292 473,782
Live Nation Entertainment, Inc.* 1,387 101,917
Marriott Vacations Worldwide Corp. 10,142 1,391,685
Penn National Gaming, Inc.* 9,632 831,916
SeaWorld Entertainment, Inc.* 29,582 934,495
    4,783,601
Environmental Control — 0.3%
Casella Waste Systems, Inc., Class A* 9,571 592,923
Food — 2.3%
Hostess Brands, Inc.* 38,977 570,623
Performance Food Group Co.* 35,651 1,697,344
Sanderson Farms, Inc. 1,848 244,306
The Simply Good Foods Co.* 25,046 785,442
  Number of
Shares
Value†
 
Food — (continued)
Utz Brands, Inc. 38,081 $ 840,067
    4,137,782
Forest Products & Paper — 0.1%
Domtar Corp. 4,338 137,298
Gas — 1.1%
Chesapeake Utilities Corp. 5,047 546,136
ONE Gas, Inc. 18,279 1,403,279
    1,949,415
Hand & Machine Tools — 1.2%
Colfax Corp.* 29,119 1,113,511
Kennametal, Inc. 30,980 1,122,715
    2,236,226
Healthcare Products — 1.9%
Avanos Medical, Inc.* 23,088 1,059,277
CONMED Corp. 8,510 953,120
Globus Medical, Inc., Class A* 1,383 90,199
LivaNova PLC* 7,461 493,993
Luminex Corp. 15,115 349,459
Merit Medical Systems, Inc.* 9,059 502,865
    3,448,913
Healthcare Services — 1.8%
Acadia Healthcare Co., Inc.* 18,108 910,108
Magellan Health, Inc.* 8,226 681,442
Syneos Health, Inc.* 10,002 681,436
Tenet Healthcare Corp.* 24,095 962,114
    3,235,100
Home Builders — 1.2%
KB Home 5,177 173,533
Meritage Homes Corp.* 12,621 1,045,271
Taylor Morrison Home Corp.* 35,940 921,861
    2,140,665
Home Furnishings — 0.1%
Sleep Number Corp.* 3,145 257,450
Household Products & Wares — 0.1%
Helen of Troy Ltd.* 1,136 252,408
Insurance — 5.1%
AMERISAFE, Inc. 7,792 447,495
BRP Group, Inc., Class A* 25,107 752,457
CNO Financial Group, Inc. 13,415 298,215
Enstar Group Ltd.* 4,516 925,283
Kemper Corp. 5,998 460,826
Kinsale Capital Group, Inc. 3,218 644,018
MGIC Investment Corp. 89,714 1,125,911
NMI Holdings, Inc., Class A* 33,246 753,022
Palomar Holdings, Inc.* 7,017 623,390
Primerica, Inc. 8,192 1,097,155
RLI Corp. 8,718 907,980
Selective Insurance Group, Inc. 18,061 1,209,726
    9,245,478
 
125


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Iron & Steel — 1.5%
Allegheny Technologies, Inc.* 29,524 $ 495,118
Cleveland-Cliffs, Inc. 116,763 1,700,069
Commercial Metals Co. 22,150 454,961
    2,650,148
Leisure Time — 0.4%
Callaway Golf Co. 18,258 438,374
Malibu Boats, Inc., Class A* 5,418 338,300
    776,674
Lodging — 1.3%
Boyd Gaming Corp.* 38,200 1,639,544
Wyndham Destinations, Inc. 16,032 719,196
    2,358,740
Machinery — Construction & Mining — 0.5%
Astec Industries, Inc. 15,489 896,503
Machinery — Diversified — 2.8%
Cactus, Inc., Class A 25,402 662,230
Chart Industries, Inc.* 12,072 1,421,961
CIRCOR International, Inc.* 12,219 469,698
Columbus McKinnon Corp. 18,135 697,109
SPX FLOW, Inc.* 19,603 1,136,190
Watts Water Technologies, Inc., Class A 5,635 685,780
    5,072,968
Media — 0.9%
Nexstar Media Group, Inc., Class A 9,034 986,423
TEGNA, Inc. 41,831 583,542
    1,569,965
Metal Fabricate/Hardware — 1.5%
Rexnord Corp. 46,410 1,832,731
The Timken Co. 11,007 851,501
    2,684,232
Mining — 2.2%
Alcoa Corp.* 25,673 591,763
Arconic Corp.* 53,922 1,606,876
Coeur Mining, Inc.* 67,150 695,002
Constellium S.E.* 62,798 878,544
Sandstorm Gold Ltd.* 29,882 214,254
    3,986,439
Miscellaneous Manufacturing — 0.6%
Federal Signal Corp. 30,294 1,004,852
Oil & Gas — 1.6%
Brigham Minerals, Inc., Class A 34,298 376,935
EQT Corp. 55,644 707,235
Viper Energy Partners LP 70,581 820,151
WPX Energy, Inc.* 118,785 968,098
    2,872,419
Oil & Gas Services — 0.9%
ChampionX Corp.* 101,137 1,547,396
  Number of
Shares
Value†
 
Packaging and Containers — 0.5%
TriMas Corp.* 28,528 $ 903,482
Pharmaceuticals — 0.8%
Owens & Minor, Inc. 16,435 444,567
PRA Health Sciences, Inc.* 4,523 567,365
Prestige Consumer Healthcare, Inc.* 12,010 418,789
    1,430,721
Pipelines — 0.2%
Rattler Midstream LP 30,207 286,362
Real Estate — 0.3%
Kennedy-Wilson Holdings, Inc. 31,680 566,755
Retail — 4.9%
Abercrombie & Fitch Co., Class A 7,787 158,543
American Eagle Outfitters, Inc. 55,195 1,107,764
At Home Group, Inc.* 5,460 84,412
Beacon Roofing Supply, Inc.* 23,510 944,867
Big Lots, Inc. 2,024 86,890
BMC Stock Holdings, Inc.* 22,288 1,196,420
Brinker International, Inc. 20,485 1,158,836
Burlington Stores, Inc.* 394 103,051
FirstCash, Inc. 6,141 430,116
Five Below, Inc.* 1,167 204,202
Jack in the Box, Inc. 6,418 595,590
Lithia Motors, Inc., Class A 3,657 1,070,294
RH* 1,245 557,162
Sonic Automotive, Inc., Class A 11,879 458,173
Zumiez, Inc.* 16,356 601,574
    8,757,894
Savings & Loans — 1.9%
Brookline Bancorp, Inc. 47,728 574,645
OceanFirst Financial Corp. 38,447 716,268
Pacific Premier Bancorp, Inc. 29,882 936,203
Provident Financial Services, Inc. 10,696 192,100
Washington Federal, Inc. 35,984 926,228
    3,345,444
Semiconductors — 2.4%
Allegro MicroSystems, Inc.* 14,325 381,904
Cohu, Inc. 30,081 1,148,493
CTS Corp. 21,920 752,514
Onto Innovation, Inc.* 19,653 934,500
Semtech Corp.* 6,464 465,990
Silicon Laboratories, Inc.* 4,918 626,258
    4,309,659
Software — 1.8%
Allscripts Healthcare Solutions, Inc.* 42,696 616,530
Bottomline Technologies, Inc.* 12,104 638,365
Cloudera, Inc.* 51,625 718,104
ManTech International Corp., Class A 7,418 659,757
Verint Systems, Inc.* 9,186 617,115
    3,249,871
 
126


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Value Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Telecommunications — 1.1%
InterDigital, Inc. 8,581 $ 520,695
Viavi Solutions, Inc.* 53,019 793,960
Vonage Holdings Corp.* 55,589 715,708
    2,030,363
Transportation — 1.5%
Air Transport Services Group, Inc.* 18,803 589,286
ArcBest Corp. 14,952 638,002
Golar LNG Ltd.* 51,026 491,891
Saia, Inc.* 5,849 1,057,499
    2,776,678
Water — 0.4%
SJW Group 9,281 643,730
TOTAL COMMON STOCKS
(Cost $127,224,132)
161,941,265
REAL ESTATE INVESTMENT TRUSTS — 10.5%
Apartments — 0.1%
Preferred Apartment Communities, Inc., Class A 25,260 186,924
Building & Real Estate — 1.1%
PennyMac Mortgage Investment Trust 49,812 876,193
Two Harbors Investment Corp. 171,762 1,094,124
    1,970,317
Diversified — 0.4%
PS Business Parks, Inc. 5,297 703,812
Diversified Financial Services — 0.4%
KKR Real Estate Finance Trust, Inc. 45,618 817,475
Healthcare — 2.0%
Healthcare Realty Trust, Inc. 41,059 1,215,346
National Health Investors, Inc. 19,206 1,328,479
Physicians Realty Trust 56,687 1,009,029
    3,552,854
Hotels & Resorts — 1.9%
Park Hotels & Resorts, Inc. 45,740 784,441
Pebblebrook Hotel Trust 84,319 1,585,197
RLJ Lodging Trust 80,596 1,140,434
    3,510,072
Industrial — 1.6%
CyrusOne, Inc. 11,135 814,525
EastGroup Properties, Inc. 5,624 776,449
STAG lndustrial, Inc. 39,002 1,221,543
    2,812,517
Office Property — 0.8%
Highwoods Properties, Inc. 18,786 744,489
Hudson Pacific Properties, Inc. 25,597 614,840
    1,359,329
Real Estate — 0.3%
Safehold, Inc. 8,077 585,502
  Number of
Shares
Value†
 
Storage & Warehousing — 1.3%
Life Storage, Inc. 10,767 $ 1,285,472
Terreno Realty Corp. 18,097 1,058,856
    2,344,328
Strip Centers — 0.6%
Acadia Realty Trust 81,502 1,156,513
TOTAL REAL ESTATE INVESTMENT TRUSTS
(Cost $19,770,979)
  18,999,643
EXCHANGE TRADED FUNDS — 1.3%
Investment Companies — 1.3%
iShares Russell 2000 Value ETF
(Cost $2,072,437)
17,704 2,332,502
     
SHORT-TERM INVESTMENTS — 1.5%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $2,660,266)
2,660,266 2,660,266
TOTAL INVESTMENTS — 103.3%
(Cost $151,727,814)
  $ 185,933,676
Other Assets & Liabilities — (3.3)% (6,021,521)
TOTAL NET ASSETS — 100.0%   $ 179,912,155

See Security Valuation Note.
* Non-income producing security.
ETF— Exchange-Traded Fund.
LP— Limited Partnership.
PLC— Public Limited Company.
S.E.— Societas Europaea.
 
127


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Value Fund
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $161,941,265 $161,941,265 $— $—
Real Estate Investment Trusts 18,999,643 18,999,643
Exchange Traded Funds 2,332,502 2,332,502
Short-Term Investments 2,660,266 2,660,266
Total Investments $ 185,933,676 $ 185,933,676 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
128


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — 95.2%
Advertising — 0.1%
Boston Omaha Corp., Class A* 400 $ 11,060
Fluent, Inc.* 1,700 9,027
National CineMedia, Inc. 1,874 6,971
Quotient Technology, Inc.* 2,700 25,434
    52,492
Aerospace & Defense — 0.7%
AAR Corp. 1,069 38,719
Aerojet Rocketdyne Holdings, Inc.* 2,240 118,384
AeroVironment, Inc.* 618 53,704
Astronics Corp.* 795 10,518
Barnes Group, Inc. 1,465 74,261
Ducommun, Inc.* 300 16,110
Kaman Corp. 848 48,446
Kratos Defense & Security Solutions, Inc.* 3,722 102,094
Moog, Inc., Class A 891 70,656
National Presto Industries, Inc. 146 12,911
Park Aerospace Corp. 533 7,148
Triumph Group, Inc. 1,600 20,096
    573,047
Agriculture — 0.6%
Alico, Inc. 151 4,684
Cadiz, Inc.* 800 8,520
Darling Ingredients, Inc.* 5,067 292,265
Fresh Del Monte Produce, Inc. 1,016 24,455
Limoneira Co. 600 9,990
Tejon Ranch Co.* 825 11,921
The Andersons, Inc. 932 22,843
Turning Point Brands, Inc. 300 13,368
Universal Corp. 755 36,701
Vector Group Ltd. 4,157 48,429
Vital Farms, Inc.* 300 7,593
    480,769
Airlines — 0.3%
Allegiant Travel Co. 402 76,075
Hawaiian Holdings, Inc. 1,526 27,010
Mesa Air Group, Inc.* 900 6,021
SkyWest, Inc. 1,581 63,730
Spirit Airlines, Inc.* 3,100 75,795
    248,631
Apparel — 1.0%
Crocs, Inc.* 2,100 131,586
Deckers Outdoor Corp.* 882 252,940
Kontoor Brands, Inc. 1,600 64,896
Lakeland Industries, Inc.* 300 8,175
Oxford Industries, Inc. 508 33,279
Rocky Brands, Inc. 200 5,614
Steven Madden Ltd. 2,573 90,878
Superior Group of Cos, Inc. 400 9,296
Unifi, Inc.* 460 8,160
Urban Outfitters, Inc.* 2,100 53,760
Weyco Group, Inc. 200 3,168
  Number of
Shares
Value†
 
Apparel — (continued)
Wolverine World Wide, Inc. 2,482 $ 77,563
    739,315
Auto Manufacturers — 0.2%
Blue Bird Corp.* 392 7,158
Navistar International Corp.* 1,600 70,336
REV Group, Inc. 1,000 8,810
Wabash National Corp. 1,800 31,014
Workhorse Group, Inc.* 2,900 57,362
    174,680
Auto Parts & Equipment — 1.4%
Adient PLC* 2,700 93,879
American Axle & Manufacturing Holdings, Inc.* 3,716 30,991
Cooper Tire & Rubber Co. 1,549 62,734
Cooper-Standard Holdings, Inc.* 600 20,802
Dana, Inc. 4,496 87,762
Dorman Products, Inc.* 857 74,405
Douglas Dynamics, Inc. 700 29,939
Fox Factory Holding Corp.* 1,300 137,423
Gentherm, Inc.* 1,068 69,655
Meritor, Inc.* 2,245 62,658
Methode Electronics, Inc. 1,060 40,577
Miller Industries, Inc. 343 13,041
Modine Manufacturing Co.* 1,577 19,807
Motorcar Parts of America, Inc.* 700 13,734
Standard Motor Products, Inc. 700 28,322
Telenav, Inc.* 1,000 4,700
Tenneco, Inc., Class A* 1,600 16,960
The Goodyear Tire & Rubber Co. 7,100 77,461
The Shyft Group, Inc. 1,000 28,380
Visteon Corp.* 800 100,416
XPEL, Inc.* 500 25,780
    1,039,426
Banks — 8.0%
1st Constitution Bancorp 400 6,348
1st Source Corp. 488 19,666
ACNB Corp. 200 5,000
Alerus Financial Corp. 400 10,948
Allegiance Bancshares, Inc. 600 20,478
Altabancorp 600 16,752
Amalgamated Bank, Class A 300 4,122
American National Bankshares, Inc. 400 10,484
Ameris Bancorp 2,012 76,597
Ames National Corp. 299 7,182
Arrow Financial Corp. 436 13,041
Atlantic Capital Bancshares, Inc.* 800 12,736
Atlantic Union Bankshares Corp. 2,407 79,287
Auburn National BanCorp, Inc. 100 4,169
BancFirst Corp. 620 36,394
Banco Latinoamericano de Comercio Exterior S.A. 1,110 17,571
BancorpSouth Bank 3,049 83,665
Bank First Corp. 200 12,964
 
129


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Banks — (continued)
Bank of Commerce Holdings 800 $ 7,920
Bank of Marin Bancorp 480 16,483
BankUnited, Inc. 2,900 100,862
Bankwell Financial Group, Inc. 300 5,865
Banner Corp. 1,100 51,249
Bar Harbor Bankshares 597 13,486
BayCom Corp.* 400 6,068
BCB Bancorp, Inc. 400 4,428
Bridge Bancorp, Inc. 507 12,259
Bridgewater Bancshares Inc.* 700 8,743
Bryn Mawr Bank Corp. 632 19,336
Business First Bancshares, Inc. 700 14,252
Byline Bancorp, Inc. 700 10,815
C&F Financial Corp. 100 3,711
Cadence BanCorp 4,006 65,779
California BanCorp* 300 4,668
Cambridge Bancorp 200 13,950
Camden National Corp. 539 19,285
Capital Bancorp, Inc.* 400 5,572
Capital City Bank Group, Inc. 469 11,528
Capstar Financial Holdings, Inc. 600 8,850
Carter Bankshares, Inc. 800 8,576
Cathay General Bancorp 2,350 75,647
CB Financial Services, Inc. 200 4,002
CBTX, Inc. 500 12,755
Central Pacific Financial Corp. 900 17,109
Central Valley Community Bancorp 400 5,956
Century Bancorp, Inc., Class A 69 5,338
Chemung Financial Corp. 100 3,395
ChoiceOne Financial Services, Inc. 300 9,243
CIT Group, Inc. 3,100 111,290
Citizens & Northern Corp. 356 7,063
Citizens Holding Co. 200 4,190
City Holding Co. 450 31,298
Civista Bancshares, Inc. 400 7,012
CNB Financial Corp. 474 10,091
Coastal Financial Corp.* 300 6,300
Codorus Valley Bancorp, Inc. 276 4,681
Colony Bankcorp, Inc. 300 4,395
Columbia Banking System, Inc. 2,168 77,831
Community Bank System, Inc. 1,637 102,002
Community Trust Bancorp, Inc. 483 17,895
ConnectOne Bancorp, Inc. 1,160 22,956
County Bancorp, Inc. 200 4,416
CrossFirst Bankshares, Inc.* 1,500 16,125
Customers Bancorp, Inc.* 980 17,816
CVB Financial Corp. 3,992 77,844
Eagle Bancorp, Inc. 1,073 44,315
Eastern Bankshares, Inc.* 5,200 84,812
Enterprise Bancorp, Inc. 313 7,997
Enterprise Financial Services Corp. 782 27,331
Equity Bancshares, Inc., Class A* 500 10,795
Esquire Financial Holdings, Inc.* 300 5,757
Evans Bancorp, Inc. 200 5,508
Farmers & Merchants Bancorp, Inc. 400 9,200
  Number of
Shares
Value†
 
Banks — (continued)
Farmers National Banc Corp. 700 $ 9,289
FB Financial Corp. 886 30,771
Fidelity D&D Bancorp, Inc. 100 6,436
Financial Institutions, Inc. 440 9,900
First Bancorp 924 31,259
First BanCorp Puerto Rico 6,600 60,852
First Bank/Hamilton NJ 400 3,752
First Busey Corp. 1,713 36,915
First Business Financial Services, Inc. 200 3,682
First Choice Bancorp 300 5,547
First Commonwealth Financial Corp. 2,821 30,862
First Community Bankshares, Inc. 626 13,509
First Community Corp. 300 5,097
First Financial Bancorp 2,982 52,275
First Financial Bankshares, Inc. 4,004 144,845
First Financial Corp. 380 14,763
First Foundation, Inc. 1,200 24,000
First Guaranty Bancshares, Inc. 220 3,909
First Internet Bancorp 300 8,622
First Interstate BancSystem, Inc., Class A 1,287 52,471
First Merchants Corp. 1,630 60,978
First Mid Bancshares, Inc. 500 16,830
First Midwest Bancorp, Inc. 3,714 59,127
First Northwest Bancorp 200 3,120
First United Corp. 300 4,650
Flagstar Bancorp, Inc. 1,400 57,064
FNCB Bancorp, Inc. 800 5,120
Franklin Financial Services Corp. 200 5,406
Fulton Financial Corp. 4,803 61,094
FVCBankcorp, Inc.* 500 7,350
German American Bancorp, Inc. 838 27,729
Glacier Bancorp, Inc. 3,021 138,996
Great Southern Bancorp, Inc. 371 18,142
Great Western Bancorp, Inc. 1,600 33,440
Guaranty Bancshares, Inc. 300 8,985
Hancock Whitney Corp. 2,678 91,106
Hanmi Financial Corp. 913 10,353
HarborOne Bancorp, Inc. 1,877 20,384
Hawthorn Bancshares, Inc. 208 4,555
HBT Financial, Inc. 400 6,060
Heartland Financial USA, Inc. 1,117 45,093
Heritage Commerce Corp. 1,900 16,853
Heritage Financial Corp. 1,230 28,770
Hilltop Holdings, Inc. 2,342 64,428
Home BancShares, Inc. 4,735 92,238
HomeStreet, Inc. 600 20,250
Hope Bancorp, Inc. 3,467 37,825
Horizon Bancorp, Inc. 1,350 21,411
Howard Bancorp, Inc.* 500 5,905
Independent Bank Corp. 1,055 77,057
Independent Bank Corp. 800 14,776
Independent Bank Group, Inc. 1,150 71,898
International Bancshares Corp. 1,625 60,840
Investar Holding Corp. 300 4,962
 
130


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Banks — (continued)
Kearny Financial Corp. 2,745 $ 28,987
Lakeland Bancorp, Inc. 1,711 21,730
Lakeland Financial Corp. 791 42,382
Landmark Bancorp, Inc. 210 4,799
LCNB Corp. 400 5,876
Level One Bancorp, Inc. 200 4,046
Live Oak Bancshares, Inc. 900 42,714
Luther Burbank Corp. 800 7,840
Macatawa Bank Corp. 800 6,696
Mackinac Financial Corp. 400 5,104
MainStreet Bancshares, Inc.* 300 5,073
Mercantile Bank Corp. 500 13,585
Merchants Bancorp 200 5,526
Meridian Corp. 300 6,240
Meta Financial Group, Inc. 1,100 40,216
Metrocity Bankshares, Inc. 600 8,652
Metropolitan Bank Holding Corp.* 200 7,254
Mid Penn Bancorp, Inc. 200 4,380
Middlefield Banc Corp. 300 6,750
Midland States Bancorp, Inc. 700 12,509
MidWestOne Financial Group, Inc. 400 9,800
MVB Financial Corp. 200 4,536
National Bank Holdings Corp., Class A 1,000 32,760
National Bankshares, Inc. 219 6,857
NBT Bancorp, Inc. 1,369 43,945
Nicolet Bankshares, Inc.* 300 19,905
Northeast Bank 300 6,756
Northrim BanCorp, Inc. 200 6,790
Norwood Financial Corp. 200 5,234
Oak Valley Bancorp 113 1,878
OFG Bancorp 1,610 29,849
Ohio Valley Banc Corp. 200 4,720
Old National Bancorp 5,061 83,810
Old Second Bancorp, Inc. 800 8,080
OP Bancorp 700 5,390
Origin Bancorp, Inc. 800 22,216
Orrstown Financial Services, Inc. 400 6,620
Park National Corp. 424 44,524
Parke Bancorp, Inc. 440 6,864
PCB Bancorp 300 3,033
PCSB Financial Corp. 500 7,970
Peapack-Gladstone Financial Corp. 636 14,475
Penns Woods Bancorp, Inc. 252 6,555
Peoples Bancorp of North Carolina, Inc. 200 4,604
Peoples Bancorp, Inc. 572 15,496
Peoples Financial Services Corp. 200 7,352
Pioneer Bancorp, Inc.* 500 5,285
Plumas Bancorp 200 4,700
Preferred Bank 400 20,188
Premier Financial Bancorp, Inc. 550 7,310
Premier Financial Corp. 1,231 28,313
Provident Bancorp, Inc. 404 4,848
QCR Holdings, Inc. 500 19,795
RBB Bancorp 600 9,228
Red River Bancshares, Inc. 200 9,910
  Number of
Shares
Value†
 
Banks — (continued)
Reliant Bancorp, Inc. 400 $ 7,448
Renasant Corp. 1,635 55,067
Republic Bancorp, Inc., Class A 287 10,352
Republic First Bancorp, Inc.* 1,700 4,845
Richmond Mutual BanCorp, Inc. 600 8,196
S&T Bancorp, Inc. 1,281 31,820
Salisbury Bancorp, Inc. 100 3,727
Sandy Spring Bancorp, Inc. 1,450 46,676
SB Financial Group, Inc. 300 5,484
Seacoast Banking Corp of Florida* 1,540 45,353
Select Bancorp, Inc.* 300 2,841
ServisFirst Bancshares, Inc. 1,600 64,464
Shore Bancshares, Inc. 300 4,380
Sierra Bancorp 412 9,855
Silvergate Capital Corp., Class A* 500 37,155
Simmons First National Corp., Class A 3,296 71,161
SmartFinancial, Inc. 400 7,256
South Plains Financial, Inc. 400 7,580
South State Corp. 2,211 159,855
Southern First Bancshares, Inc.* 200 7,070
Southern National Bancorp of Virginia, Inc. 600 7,266
Southside Bancshares, Inc. 1,071 33,233
Spirit of Texas Bancshares, Inc. 400 6,720
Standard AVB Financial Corp. 200 6,518
Sterling Bancorp, Inc. 700 3,178
Stock Yards Bancorp, Inc. 667 27,000
Summit Financial Group, Inc. 400 8,832
Texas Capital Bancshares, Inc.* 1,600 95,200
The Bancorp, Inc.* 1,512 20,639
The Bank of NT Butterfield & Son Ltd. 1,500 46,740
The Bank of Princeton 200 4,682
The Community Financial Corp. 100 2,648
The First Bancorp, Inc. 434 11,024
The First Bancshares, Inc. 700 21,616
The First of Long Island Corp. 689 12,299
Tompkins Financial Corp. 458 32,335
Towne Bank 2,177 51,116
TriCo Bancshares 898 31,681
TriState Capital Holdings, Inc.* 800 13,920
Triumph Bancorp, Inc.* 700 33,985
TrustCo Bank Corp. 3,252 21,691
Trustmark Corp. 2,030 55,439
UMB Financial Corp. 1,381 95,275
United Bankshares, Inc. 3,860 125,064
United Community Banks, Inc. 2,378 67,630
United Security Bancshares 300 2,115
Unity Bancorp, Inc. 200 3,510
Univest Corp. 987 20,312
Valley National Bancorp 12,383 120,734
Veritex Holdings, Inc. 1,453 37,284
Walker & Dunlop, Inc. 900 82,818
Washington Trust Bancorp, Inc. 570 25,536
WesBanco, Inc. 2,130 63,815
West BanCorp, Inc. 478 9,225
 
131


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Banks — (continued)
Westamerica BanCorp 873 $ 48,268
Western New England Bancorp, Inc. 1,000 6,890
    6,101,783
Beverages — 0.3%
Celsius Holdings, Inc.* 1,100 55,341
Coca-Cola Consolidated, Inc. 152 40,473
Farmer Bros Co.* 204 952
MGP Ingredients, Inc. 400 18,824
National Beverage Corp. 342 29,036
NewAge, Inc.* 2,800 7,364
Primo Water Corp. 4,700 73,696
    225,686
Biotechnology — 10.2%
Abeona Therapeutics, Inc.* 2,500 3,925
ADMA Biologics, Inc.* 1,300 2,535
Adverum Biotechnologies, Inc.* 2,600 28,184
Affimed N.V.* 2,600 15,132
Agenus, Inc.* 5,000 15,900
Akero Therapeutics, Inc.* 400 10,320
Akouos, Inc.* 400 7,932
Albireo Pharma, Inc.* 500 18,755
Aligos Therapeutics, Inc.* 300 8,295
Allakos, Inc.* 800 112,000
Allogene Therapeutics, Inc.* 1,800 45,432
ALX Oncology Holdings, Inc.* 300 25,860
Amicus Therapeutics, Inc.* 8,000 184,720
AnaptysBio, Inc.* 600 12,900
Anavex Life Sciences Corp.* 1,900 10,260
ANI Pharmaceuticals, Inc.* 300 8,712
Annexon, Inc.* 400 10,012
Apellis Pharmaceuticals, Inc.* 1,900 108,680
Applied Genetic Technologies Corp.* 1,000 4,090
Applied Molecular Transport, Inc.* 400 12,308
Applied Therapeutics, Inc.* 500 11,005
Aprea Therapeutics, Inc.* 200 984
Aptinyx, Inc.* 1,100 3,806
Aravive, Inc.* 500 2,820
Arcturus Therapeutics Holdings, Inc.* 700 30,366
Arcus Biosciences, Inc.* 1,300 33,748
Arcutis Biotherapeutics, Inc.* 600 16,878
Ardelyx, Inc.* 2,200 14,234
Arena Pharmaceuticals, Inc.* 1,850 142,135
Arrowhead Pharmaceuticals, Inc.* 3,100 237,863
Assembly Biosciences, Inc.* 1,100 6,655
Atara Biotherapeutics, Inc.* 2,328 45,699
Atea Pharmaceuticals, Inc.* 500 20,890
Athersys, Inc.* 5,000 8,750
Athira Pharma, Inc.* 400 13,700
Atreca, Inc., Class A* 1,000 16,150
AVEO Pharmaceuticals, Inc.* 900 5,193
Avid Bioservices, Inc.* 1,500 17,310
Avidity Biosciences, Inc.* 500 12,760
Avrobio, Inc.* 1,100 15,334
Axsome Therapeutics, Inc.* 900 73,323
  Number of
Shares
Value†
 
Biotechnology — (continued)
Beam Therapeutics, Inc.* 1,200 $ 97,968
BioCryst Pharmaceuticals, Inc.* 5,300 39,485
Biohaven Pharmaceutical Holding Co., Ltd.* 1,500 128,565
Black Diamond Therapeutics, Inc.* 582 18,653
Blueprint Medicines Corp.* 1,700 190,655
BrainStorm Cell Therapeutics, Inc.* 1,000 4,525
Bridgebio Pharma, Inc.* 2,300 163,553
C4 Therapeutics, Inc.* 300 9,939
Cabaletta Bio, Inc.* 600 7,488
Calithera Biosciences, Inc.* 2,200 10,802
Cara Therapeutics, Inc.* 1,500 22,695
CASI Pharmaceuticals, Inc.* 1,600 4,720
Catabasis Pharmaceuticals, Inc.* 800 1,712
CEL-SCI Corp.* 1,100 12,826
Cerecor, Inc.* 1,000 2,640
ChemoCentryx, Inc.* 1,495 92,570
Chinook Therapeutics, Inc.* 560 8,882
ChromaDex Corp.* 800 3,840
Constellation Pharmaceuticals, Inc.* 900 25,920
ContraFect Corp.* 600 3,030
Cortexyme, Inc.* 500 13,890
Crinetics Pharmaceuticals, Inc.* 1,000 14,110
Cue Biopharma, Inc.* 1,000 12,510
Cymabay Therapeutics, Inc.* 2,100 12,054
CytomX Therapeutics, Inc.* 1,500 9,825
Deciphera Pharmaceuticals, Inc.* 1,100 62,777
Denali Therapeutics, Inc.* 2,000 167,520
DermTech, Inc.* 200 6,488
Dicerna Pharmaceuticals, Inc.* 2,200 48,466
Dynavax Technologies Corp.* 3,220 14,329
Dyne Therapeutics, Inc.* 400 8,400
Editas Medicine, Inc.* 2,000 140,220
Eiger BioPharmaceuticals, Inc.* 900 11,061
Emergent BioSolutions, Inc.* 1,358 121,677
Enzo Biochem, Inc.* 1,800 4,536
Epizyme, Inc.* 2,700 29,322
Esperion Therapeutics, Inc.* 900 23,400
Evelo Biosciences, Inc.* 700 8,463
Evolus, Inc.* 600 2,016
Exicure, Inc.* 2,400 4,248
Fate Therapeutics, Inc.* 2,200 200,046
FibroGen, Inc.* 2,600 96,434
Five Prime Therapeutics, Inc.* 800 13,608
Forma Therapeutics Holdings, Inc.* 500 17,450
Frequency Therapeutics, Inc.* 800 28,208
Generation Bio Co.* 400 11,340
Genprex, Inc.* 1,400 5,810
Geron Corp.* 9,240 14,692
GlycoMimetics, Inc.* 1,300 4,888
Gossamer Bio, Inc.* 1,800 17,406
Halozyme Therapeutics, Inc.* 4,089 174,641
Harvard Bioscience, Inc.* 1,700 7,293
Homology Medicines, Inc.* 1,200 13,548
iBio, Inc.* 1,400 1,470
 
132


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Biotechnology — (continued)
IGM Biosciences, Inc.* 200 $ 17,658
ImmunoGen, Inc.* 5,163 33,301
Immunovant, Inc.* 1,100 50,809
Inhibrx, Inc.* 300 9,891
Innoviva, Inc.* 2,000 24,780
Inovio Pharmaceuticals, Inc.* 5,200 46,020
Inozyme Pharma, Inc.* 300 6,192
Insmed, Inc.* 3,200 106,528
Intercept Pharmaceuticals, Inc.* 872 21,538
Intra-Cellular Therapies, Inc.* 2,100 66,780
iTeos Therapeutics, Inc.* 300 10,146
IVERIC bio, Inc.* 2,584 17,855
Kaleido Biosciences, Inc.* 600 5,460
Karuna Therapeutics, Inc.* 500 50,795
Karyopharm Therapeutics, Inc.* 2,400 37,152
Keros Therapeutics, Inc.* 400 28,216
Kezar Life Sciences, Inc.* 500 2,610
Kindred Biosciences, Inc.* 1,400 6,034
Kiniksa Pharmaceuticals Ltd., Class A* 1,000 17,670
Kodiak Sciences, Inc.* 1,000 146,910
Kronos Bio, Inc.* 500 14,935
Krystal Biotech, Inc.* 400 24,000
Kymera Therapeutics, Inc.* 300 18,600
Lexicon Pharmaceuticals, Inc.* 1,760 6,019
Ligand Pharmaceuticals, Inc.* 434 43,161
Liquidia Corp.* 600 1,770
LogicBio Therapeutics, Inc.* 400 3,052
MacroGenics, Inc.* 1,800 41,148
Magenta Therapeutics, Inc.* 600 4,704
Marker Therapeutics, Inc.* 1,100 1,595
MEI Pharma, Inc.* 3,800 10,032
MeiraGTx Holdings PLC* 500 7,570
Mersana Therapeutics, Inc.* 1,600 42,576
Mirati Therapeutics, Inc.* 1,327 291,462
Molecular Templates, Inc.* 800 7,512
Mustang Bio, Inc.* 1,500 5,678
Myriad Genetics, Inc.* 2,300 45,483
NantKwest, Inc.* 1,100 14,663
NeoGenomics, Inc.* 3,200 172,288
NextCure, Inc.* 500 5,450
NGM Biopharmaceuticals, Inc.* 800 24,236
Nkarta, Inc.* 500 30,735
Novavax, Inc.* 1,911 213,096
Nurix Therapeutics, Inc.* 300 9,864
Omeros Corp.* 1,800 25,713
Oncocyte Corp.* 1,800 4,302
Organogenesis Holdings, Inc.* 1,100 8,283
Orgenesis, Inc.* 800 3,600
Ovid therapeutics, Inc.* 1,600 3,696
Oyster Point Pharma, Inc.* 200 3,764
Pacific Biosciences of California, Inc.* 5,500 142,670
Pandion Therapeutics, Inc.* 400 5,940
Phathom Pharmaceuticals, Inc.* 400 13,288
Pieris Pharmaceuticals, Inc.* 1,300 3,250
Pliant Therapeutics, Inc.* 300 6,816
  Number of
Shares
Value†
 
Biotechnology — (continued)
Poseida Therapeutics, Inc.* 600 $ 6,582
Praxis Precision Medicines, Inc.* 300 16,506
Precigen, Inc.* 2,100 21,420
Precision BioSciences, Inc.* 1,200 10,008
Prelude Therapeutics, Inc.* 300 21,465
Prevail Therapeutics, Inc.* 300 6,921
Prothena Corp. PLC* 900 10,809
Provention Bio, Inc.* 1,500 25,410
PTC Therapeutics, Inc.* 1,900 115,957
Puma Biotechnology, Inc.* 900 9,234
Radius Health, Inc.* 1,400 25,004
RAPT Therapeutics, Inc.* 400 7,900
REGENXBIO, Inc.* 1,100 49,896
Relay Therapeutics, Inc.* 1,000 41,560
Replimune Group, Inc.* 700 26,705
REVOLUTION Medicines, Inc.* 1,200 47,508
Rigel Pharmaceuticals, Inc.* 6,090 21,315
Rocket Pharmaceuticals, Inc.* 1,000 54,840
Rubius Therapeutics, Inc.* 1,300 9,867
Sangamo Therapeutics, Inc.* 3,703 57,785
Satsuma Pharmaceuticals, Inc.* 300 1,383
Savara, Inc.* 1,000 1,150
Scholar Rock Holding Corp.* 700 33,971
Selecta Biosciences, Inc.* 2,700 8,181
Shattuck Labs, Inc.* 400 20,964
Solid Biosciences, Inc.* 400 3,032
Sorrento Therapeutics, Inc.* 7,000 47,775
Springworks Therapeutics, Inc.* 700 50,764
Stoke Therapeutics, Inc.* 400 24,772
Strongbridge Biopharma PLC* 1,700 4,131
Sutro Biopharma, Inc.* 834 18,106
Syndax Pharmaceuticals, Inc.* 800 17,792
Tarsus Pharmaceuticals, Inc.* 200 8,266
TCR2 Therapeutics, Inc.* 800 24,744
Tela Bio, Inc.* 200 3,008
TG Therapeutics, Inc.* 3,500 182,070
Theravance Biopharma, Inc.* 1,400 24,878
Translate Bio, Inc.* 2,192 40,399
TransMedics Group, Inc.* 700 13,930
Travere Therapeutics, Inc.* 1,500 40,883
Turning Point Therapeutics, Inc.* 1,166 142,077
Twist Bioscience Corp.* 1,004 141,855
Tyme Technologies, Inc.* 2,000 2,440
Ultragenyx Pharmaceutical, Inc.* 1,900 263,017
UNITY Biotechnology, Inc.* 900 4,716
Vaxart, Inc.* 1,300 7,423
VBI Vaccines, Inc.* 6,200 17,050
Veracyte, Inc.* 1,800 88,092
Verastem, Inc.* 6,200 13,206
Vericel Corp.* 1,400 43,232
Veru, Inc.* 1,500 12,975
Viela Bio, Inc.* 700 25,179
Viking Therapeutics, Inc.* 2,400 13,512
Vir Biotechnology, Inc.* 1,600 42,848
VolitionRX Ltd.* 1,100 4,279
 
133


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Biotechnology — (continued)
VYNE Therapeutics, Inc.* 4,200 $ 6,636
WaVe Life Sciences Ltd.* 700 5,509
X4 Pharmaceuticals, Inc.* 300 1,929
XBiotech, Inc.* 467 7,309
Xencor, Inc.* 1,800 78,534
XOMA Corp.* 200 8,826
Y-mAbs Therapeutics, Inc.* 1,000 49,510
Zentalis Pharmaceuticals, Inc.* 900 46,746
ZIOPHARM Oncology, Inc.* 7,527 18,968
    7,718,224
Building Materials — 1.6%
AAON, Inc. 1,285 85,620
American Woodmark Corp.* 469 44,016
Apogee Enterprises, Inc. 843 26,706
Boise Cascade Co. 1,200 57,360
Builders FirstSource, Inc.* 3,573 145,814
Caesarstone Ltd. 600 7,734
Cornerstone Building Brands, Inc.* 1,664 15,442
Forterra, Inc.* 800 13,756
Gibraltar Industries, Inc.* 1,001 72,012
Griffon Corp. 1,256 25,597
JELD-WEN Holding, Inc.* 2,000 50,720
Louisiana-Pacific Corp. 3,494 129,872
LSI Industries, Inc. 1,000 8,560
Masonite International Corp.* 700 68,838
Patrick Industries, Inc. 675 46,136
PGT Innovations, Inc.* 1,900 38,646
Research Frontiers, Inc.* 1,100 3,091
Simpson Manufacturing Co., Inc. 1,360 127,092
SPX Corp.* 1,400 76,356
Summit Materials, Inc., Class A* 3,505 70,380
UFP Industries, Inc. 1,849 102,712
US Concrete, Inc.* 500 19,985
    1,236,445
Chemicals — 1.5%
AdvanSix, Inc.* 1,000 19,990
AgroFresh Solutions, Inc.* 1,400 3,178
American Vanguard Corp. 878 13,627
Amyris, Inc.* 2,700 16,673
Balchem Corp. 1,005 115,796
Codexis, Inc.* 1,700 37,111
Ferro Corp.* 2,638 38,594
GCP Applied Technologies, Inc.* 1,500 35,475
H.B. Fuller Co. 1,580 81,970
Hawkins, Inc. 349 18,256
Ingevity Corp.* 1,300 98,449
Innospec, Inc. 800 72,584
Intrepid Potash, Inc.* 370 8,936
Koppers Holdings, Inc.* 620 19,319
Kraton Corp.* 1,041 28,929
Kronos Worldwide, Inc. 900 13,419
Minerals Technologies, Inc. 1,028 63,859
Oil-Dri Corp of America 197 6,714
Orion Engineered Carbons S.A. 1,700 29,138
  Number of
Shares
Value†
 
Chemicals — (continued)
PQ Group Holdings, Inc. 1,100 $ 15,686
Quaker Chemical Corp. 413 104,650
Rayonier Advanced Materials, Inc.* 1,900 12,388
Rogers Corp.* 577 89,602
Sensient Technologies Corp. 1,358 100,180
Stepan Co. 665 79,348
Tronox Holdings PLC, Class A 2,900 42,398
    1,166,269
Coal — 0.1%
Arch Resources, Inc. 500 21,885
CONSOL Energy, Inc.* 900 6,489
NACCO Industries, Inc., Class A 122 3,209
Peabody Energy Corp.* 2,300 5,543
SunCoke Energy, Inc. 2,541 11,053
Warrior Met Coal, Inc. 1,500 31,980
    80,159
Commercial Services — 4.2%
ABM Industries, Inc. 2,039 77,156
Acacia Research Corp.* 1,880 7,407
Adtalem Global Education, Inc.* 1,600 54,320
Alarm.com Holdings, Inc.* 1,500 155,175
Alta Equipment Group, Inc.* 700 6,916
American Public Education, Inc.* 555 16,916
AMN Healthcare Services, Inc.* 1,409 96,164
Arlo Technologies, Inc.* 2,433 18,953
ASGN, Inc.* 1,552 129,639
Aspen Group, Inc.* 800 8,904
Avis Budget Group, Inc.* 1,700 63,410
Barrett Business Services, Inc. 242 16,507
BG Staffing, Inc. 400 5,396
BrightView Holdings, Inc.* 1,315 19,883
CAI International, Inc. 460 14,370
Cardtronics PLC, Class A* 1,163 41,054
Carriage Services, Inc. 600 18,792
Cass Information Systems, Inc. 498 19,377
CBIZ, Inc.* 1,640 43,640
Cimpress PLC* 569 49,924
Collectors Universe, Inc. 300 22,620
CorVel Corp.* 262 27,772
CRA International, Inc. 274 13,955
Cross Country Healthcare, Inc.* 1,084 9,615
Deluxe Corp. 1,407 41,084
Emerald Holding, Inc. 700 3,794
Ennis, Inc. 858 15,315
EVERTEC, Inc. 1,839 72,310
Evo Payments, Inc., Class A* 1,400 37,814
Forrester Research, Inc.* 375 15,713
Franchise Group, Inc. 700 21,315
Franklin Covey Co.* 297 6,614
Genasys, Inc.* 1,300 8,476
GP Strategies Corp.* 400 4,744
Green Dot Corp., Class A* 1,578 88,052
GreenSky, Inc., Class A* 2,300 10,649
HealthEquity, Inc.* 2,300 160,333
 
134


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Commercial Services — (continued)
Heidrick & Struggles International, Inc. 669 $ 19,655
Herc Holdings, Inc.* 800 53,128
HMS Holdings Corp.* 2,715 99,776
Huron Consulting Group, Inc.* 728 42,916
ICF International, Inc. 548 40,733
Information Services Group, Inc.* 1,600 5,248
Insperity, Inc. 1,126 91,679
Kelly Services, Inc., Class A 1,014 20,858
Kforce, Inc. 686 28,874
Korn Ferry 1,690 73,515
Laureate Education, Inc., Class A* 3,300 48,048
LiveRamp Holdings, Inc.* 1,967 143,965
Medifast, Inc. 347 68,130
MoneyGram International, Inc.* 2,000 10,930
Monro, Inc. 1,037 55,272
National Research Corp. 487 20,819
Perdoceo Education Corp.* 2,300 29,049
PFSweb, Inc.* 600 4,038
Progyny, Inc.* 900 38,151
Quad/Graphics, Inc. 1,300 4,966
R1 RCM, Inc.* 3,300 79,266
Rent-A-Center, Inc. 1,553 59,464
Repay Holdings Corp.* 1,900 51,775
Resources Connection, Inc. 922 11,590
ServiceSource International, Inc.* 3,600 6,336
ShotSpotter, Inc.* 300 11,310
SP Plus Corp.* 693 19,979
Strategic Education, Inc. 732 69,782
Stride, Inc.* 1,252 26,580
Team, Inc.* 983 10,715
Textainer Group Holdings Ltd.* 1,712 32,836
The Aaron's Co., Inc.* 1,100 20,856
The Brink's Co. 1,510 108,720
The Hackett Group, Inc. 716 10,303
TriNet Group, Inc.* 1,300 104,780
Triton International Ltd. 1,893 91,829
TrueBlue, Inc.* 1,076 20,111
Universal Technical Institute, Inc.* 1,100 7,106
Vectrus, Inc.* 400 19,888
Viad Corp. 671 24,270
Vivint Smart Home, Inc.* 2,400 49,800
Willdan Group, Inc.* 300 12,510
WW International, Inc.* 1,500 36,600
    3,210,234
Computers — 2.2%
3D Systems Corp.* 3,500 36,680
Conduent, Inc.* 4,800 23,040
Corsair Gaming, Inc.* 500 18,110
Cubic Corp. 969 60,117
Diebold Nixdorf, Inc.* 2,400 25,584
ExlService Holdings, Inc.* 1,000 85,130
iCAD, Inc.* 800 10,560
Insight Enterprises, Inc.* 1,043 79,362
Mastech Digital, Inc.* 200 3,180
  Number of
Shares
Value†
 
Computers — (continued)
MAXIMUS, Inc. 1,912 $ 139,939
Mitek Systems, Inc.* 1,400 24,892
MTS Systems Corp. 560 32,570
NetScout Systems, Inc.* 2,265 62,106
OneSpan, Inc.* 1,128 23,327
PAE, Inc.* 2,100 19,278
PAR Technology Corp.* 500 31,395
Parsons Corp.* 600 21,846
Perspecta, Inc. 4,300 103,544
Ping Identity Holding Corp.* 1,100 31,504
PlayAGS, Inc.* 800 5,760
Qualys, Inc.* 1,000 121,870
Quantum Corp.* 1,300 7,956
Rapid7, Inc.* 1,600 144,256
Rimini Street, Inc.* 900 3,987
SecureWorks Corp., Class A* 100 1,422
StarTek, Inc.* 700 5,264
Super Micro Computer, Inc.* 1,300 41,158
Sykes Enterprises, Inc.* 1,236 46,560
Tenable Holdings, Inc.* 2,200 114,972
The ExOne Co.* 500 4,745
TTEC Holdings, Inc. 607 44,269
Unisys Corp.* 1,924 37,864
Varonis Systems, Inc.* 958 156,738
Virtusa Corp.* 889 45,455
Vocera Communications, Inc.* 1,000 41,530
    1,655,970
Cosmetics & Personal Care — 0.2%
Edgewell Personal Care Co. 1,700 58,786
elf Beauty, Inc.* 1,400 35,266
Inter Parfums, Inc. 524 31,697
Revlon, Inc., Class A* 270 3,207
    128,956
Distribution & Wholesale — 1.1%
A-Mark Precious Metals, Inc. 200 5,130
Avient Corp. 2,855 114,999
Core-Mark Holding Co., Inc. 1,464 42,998
EVI Industries, Inc.* 200 5,984
Fossil Group, Inc.* 1,700 14,739
G-III Apparel Group Ltd.* 1,508 35,800
H&E Equipment Services, Inc. 1,059 31,569
KAR Auction Services, Inc. 4,000 74,440
Resideo Technologies, Inc.* 4,400 93,544
ScanSource, Inc.* 881 23,241
SiteOne Landscape Supply, Inc.* 1,356 215,102
Systemax, Inc. 362 12,992
Titan Machinery, Inc.* 523 10,225
Veritiv Corp.* 500 10,395
VSE Corp. 308 11,855
WESCO International, Inc.* 1,547 121,439
    824,452
Diversified Financial Services — 2.5%
Altisource Portfolio Solutions S.A.* 300 3,864
 
135


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Diversified Financial Services — (continued)
Amerant Bancorp, Inc.* 700 $ 10,640
Artisan Partners Asset Management, Inc., Class A 1,700 85,578
Assetmark Financial Holdings, Inc.* 500 12,100
Associated Capital Group, Inc., Class A 100 3,512
B Riley Financial, Inc. 600 26,532
BGC Partners, Inc., Class A 9,200 36,800
Blucora, Inc.* 1,596 25,392
Boston Private Financial Holdings, Inc. 2,758 23,305
Brightsphere Investment Group, Inc. 1,900 36,632
Calamos Asset Management, Inc., Class A(1) 469 0
Cohen & Steers, Inc. 717 53,273
Columbia Financial, Inc.* 1,500 23,340
Cowen, Inc., Class A 747 19,415
Curo Group Holdings Corp. 400 5,732
Diamond Hill Investment Group, Inc. 107 15,972
Encore Capital Group, Inc.* 997 38,833
Enova International, Inc.* 1,113 27,569
EZCORP, Inc., Class A* 1,766 8,459
Federal Agricultural Mortgage Corp., Class C 300 22,275
Federated Hermes, Inc., Class B 3,000 86,670
First Western Financial, Inc.* 300 5,871
Focus Financial Partners, Inc., Class A* 1,000 43,500
GAMCO Investors, Inc., Class A 215 3,814
Greenhill & Co., Inc. 500 6,070
Hamilton Lane, Inc., Class A 1,000 78,050
Houlihan Lokey, Inc. 1,593 107,097
I3 Verticals, Inc., Class A* 500 16,600
International Money Express, Inc.* 900 13,968
LendingClub Corp.* 2,360 24,922
Marlin Business Services Corp. 200 2,448
MMA Capital Holdings, Inc.* 200 4,920
Moelis & Co., Class A 1,700 79,492
Mr. Cooper Group, Inc.* 2,392 74,224
Navient Corp. 5,800 56,956
Nelnet, Inc., Class A 499 35,549
Oportun Financial Corp.* 700 13,559
Oppenheimer Holdings, Inc., Class A 238 7,480
Paysign, Inc.* 1,100 5,104
PennyMac Financial Services, Inc. 1,300 85,306
Piper Sandler Cos. 487 49,138
PJT Partners, Inc., Class A 700 52,675
PRA Group, Inc.* 1,448 57,428
PROG Holdings, Inc. 2,100 113,127
Pzena Investment Management, Inc., Class A 830 6,059
Regional Management Corp. 300 8,958
Safeguard Scientifics, Inc.* 850 5,423
Sculptor Capital Management, Inc. 600 9,120
Silvercrest Asset Management Group, Inc., Class A 400 5,556
Stifel Financial Corp. 3,059 154,357
StoneX Group, Inc.* 493 28,545
  Number of
Shares
Value†
 
Diversified Financial Services — (continued)
Virtus Investment Partners, Inc. 223 $ 48,391
Waddell & Reed Financial, Inc., Class A 2,000 50,940
Westwood Holdings Group, Inc. 311 4,509
WisdomTree Investments, Inc. 4,800 25,680
World Acceptance Corp.* 163 16,662
    1,867,391
Electric — 1.8%
ALLETE, Inc. 1,651 102,263
Ameresco, Inc., Class A* 800 41,792
Atlantic Power Corp.* 4,127 8,667
Avista Corp. 2,039 81,846
Black Hills Corp. 1,948 119,705
Brookfield Renewable Corp., Class A 3,227 188,037
Clearway Energy, Inc., Class A 1,100 32,505
Clearway Energy, Inc., Class C 2,500 79,825
Evoqua Water Technologies Corp.* 2,800 75,544
Genie Energy Ltd., Class B 600 4,326
MGE Energy, Inc. 1,142 79,974
NorthWestern Corp. 1,580 92,130
Ormat Technologies, Inc. 1,200 108,336
Otter Tail Corp. 1,292 55,052
PNM Resources, Inc. 2,510 121,810
Portland General Electric Co. 2,756 117,874
Spark Energy, Inc., Class A 400 3,828
Unitil Corp. 463 20,497
    1,334,011
Electrical Components & Equipment — 0.5%
American Superconductor Corp.* 600 14,052
Belden, Inc. 1,455 60,965
Encore Wire Corp. 671 40,642
EnerSys 1,323 109,888
Graham Corp. 266 4,038
Insteel Industries, Inc. 691 15,389
nLight, Inc.* 1,200 39,180
Novanta, Inc.* 1,000 118,220
Orion Energy Systems, Inc.* 700 6,909
Powell Industries, Inc. 229 6,753
    416,036
Electronics — 2.1%
Advanced Energy Industries, Inc.* 1,193 115,685
Akoustis Technologies, Inc.* 1,100 13,453
Allied Motion Technologies, Inc. 200 10,220
API Group Corp.* 4,400 79,860
Applied Optoelectronics, Inc.* 700 5,957
Atkore International Group, Inc.* 1,500 61,665
Badger Meter, Inc. 918 86,347
Bel Fuse, Inc., Class B 269 4,043
Benchmark Electronics, Inc. 1,213 32,763
Brady Corp., Class A 1,457 76,959
Comtech Telecommunications Corp. 852 17,628
CyberOptics Corp.* 300 6,807
Digimarc Corp.* 400 18,896
FARO Technologies, Inc.* 520 36,728
 
136


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Electronics — (continued)
Fitbit, Inc., Class A* 8,000 $ 54,400
Fluidigm Corp.* 2,500 15,000
GoPro, Inc., Class A* 3,800 31,464
II-VI, Inc.* 3,218 244,439
IntriCon Corp.* 200 3,620
Itron, Inc.* 1,200 115,080
Kimball Electronics, Inc.* 933 14,919
Knowles Corp.* 2,652 48,876
LENSAR, Inc.* 236 1,711
Luna Innovations, Inc.* 1,200 11,856
Mesa Laboratories, Inc. 142 40,703
Napco Security Technologies, Inc.* 300 7,866
NVE Corp. 109 6,124
OSI Systems, Inc.* 557 51,923
Plexus Corp.* 903 70,624
Sanmina Corp.* 2,026 64,609
SMART Global Holdings, Inc.* 400 15,052
Stoneridge, Inc.* 873 26,391
Transcat, Inc.* 200 6,936
TTM Technologies, Inc.* 3,129 43,164
Turtle Beach Corp.* 500 10,775
Vicor Corp.* 622 57,361
Vishay Intertechnology, Inc. 4,100 84,911
Vishay Precision Group, Inc.* 300 9,444
Wrap Technologies, Inc.* 500 2,415
    1,606,674
Energy-Alternate Sources — 1.5%
Clean Energy Fuels Corp.* 4,200 33,012
FuelCell Energy, Inc.* 9,000 100,530
FutureFuel Corp. 800 10,160
Green Plains, Inc.* 1,167 15,369
Maxeon Solar Technologies Ltd.* 287 8,142
Plug Power, Inc.* 11,600 393,356
Renewable Energy Group, Inc.* 1,200 84,984
REX American Resources Corp.* 192 14,106
Sunnova Energy International, Inc.* 1,600 72,208
SunPower Corp.* 2,300 58,972
Sunrun, Inc.* 4,680 324,699
TPI Composites, Inc.* 1,000 52,780
    1,168,318
Engineering & Construction — 1.8%
Aegion Corp.* 955 18,135
Arcosa, Inc. 1,500 82,395
Comfort Systems USA, Inc. 1,127 59,348
Concrete Pumping Holdings, Inc.* 1,400 5,362
Construction Partners, Inc., Class A* 900 26,199
Dycom Industries, Inc.* 953 71,971
EMCOR Group, Inc. 1,663 152,098
Exponent, Inc. 1,580 142,247
Fluor Corp. 4,300 68,671
Granite Construction, Inc. 1,533 40,946
Great Lakes Dredge & Dock Corp.* 1,951 25,695
IES Holdings, Inc.* 200 9,208
Iteris, Inc.* 1,200 6,780
  Number of
Shares
Value†
 
Engineering & Construction — (continued)
KBR, Inc. 4,400 $ 136,092
MasTec, Inc.* 1,764 120,270
Mistras Group, Inc.* 600 4,656
MYR Group, Inc.* 483 29,028
NV5 Global, Inc.* 300 23,634
Primoris Services Corp. 1,490 41,139
Sterling Construction Co.* 1,000 18,610
TopBuild Corp.* 1,039 191,259
Tutor Perini Corp.* 1,397 18,091
WillScot Mobile Mini Holdings Corp.* 4,952 114,738
    1,406,572
Entertainment — 2.3%
Accel Entertainment, Inc.* 1,500 15,150
AMC Entertainment Holdings, Inc., Class A 1,655 3,508
Bally's Corp. 550 27,626
Caesars Entertainment, Inc.* 5,600 415,912
Churchill Downs, Inc. 1,197 233,164
Cinemark Holdings, Inc. 3,300 57,453
Eros STX Global Corp.* 6,400 11,648
Everi Holdings, Inc.* 2,400 33,144
GAN Ltd.* 800 16,224
Golden Entertainment, Inc.* 600 11,934
IMAX Corp.* 1,400 25,228
International Game Technology PLC 3,000 50,820
Liberty Media Corp.-Liberty Braves, Class A* 300 7,461
Liberty Media Corp.-Liberty Braves, Class C* 1,200 29,856
Marriott Vacations Worldwide Corp. 1,269 174,132
Monarch Casino & Resort, Inc.* 385 23,570
Penn National Gaming, Inc.* 4,832 417,340
RCI Hospitality Holdings, Inc. 200 7,888
Red Rock Resorts, Inc., Class A 2,100 52,584
Scientific Games Corp.* 1,700 70,533
SeaWorld Entertainment, Inc.* 1,600 50,544
    1,735,719
Environmental Control — 0.6%
Advanced Emissions Solutions, Inc. 600 3,300
Casella Waste Systems, Inc., Class A* 1,500 92,925
CECO Environmental Corp.* 1,309 9,111
Covanta Holding Corp. 3,600 47,268
Energy Recovery, Inc.* 1,100 15,004
Harsco Corp.* 2,500 44,950
Heritage-Crystal Clean, Inc.* 400 8,428
Montrose Environmental Group, Inc.* 300 9,288
Pure Cycle Corp.* 800 8,984
Sharps Compliance Corp.* 600 5,670
Tetra Tech, Inc. 1,664 192,658
US Ecology, Inc. 1,040 37,783
    475,369
Food — 1.3%
B&G Foods, Inc. 2,072 57,457
 
137


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Food — (continued)
BellRing Brands, Inc., Class A* 1,300 $ 31,603
Calavo Growers, Inc. 551 38,256
Cal-Maine Foods, Inc.* 1,046 39,267
Healthcare Services Group, Inc. 2,280 64,068
HF Foods Group, Inc.* 1,300 9,776
Hostess Brands, Inc.* 4,000 58,560
Ingles Markets, Inc., Class A 504 21,501
J & J Snack Foods Corp. 485 75,354
John B Sanfilippo & Son, Inc. 300 23,658
Lancaster Colony Corp. 589 108,217
Landec Corp.* 718 7,790
Nathan's Famous, Inc. 100 5,522
Natural Grocers by Vitamin Cottage, Inc. 400 5,496
Performance Food Group Co.* 4,100 195,201
Sanderson Farms, Inc. 624 82,493
Seneca Foods Corp., Class A* 211 8,419
SpartanNash Co. 1,130 19,673
The Chefs' Warehouse, Inc.* 1,050 26,975
The Simply Good Foods Co.* 2,600 81,536
Tootsie Roll Industries, Inc. 534 15,860
United Natural Foods, Inc.* 1,900 30,343
Village Super Market, Inc., Class A 268 5,912
Weis Markets, Inc. 366 17,498
    1,030,435
Forest Products & Paper — 0.2%
Clearwater Paper Corp.* 578 21,820
Domtar Corp. 1,700 53,805
Glatfelter Corp. 1,359 22,260
Neenah, Inc. 574 31,754
Schweitzer-Mauduit International, Inc. 976 39,245
Verso Corp., Class A 900 10,818
    179,702
Gas — 0.9%
Brookfield Infrastructure Corp., Class A 1,000 72,300
Chesapeake Utilities Corp. 535 57,892
New Jersey Resources Corp. 2,964 105,370
Northwest Natural Holding Co. 950 43,691
ONE Gas, Inc. 1,600 122,832
RGC Resources, Inc. 200 4,756
South Jersey Industries, Inc. 3,080 66,374
Southwest Gas Holdings, Inc. 1,744 105,948
Spire, Inc. 1,556 99,646
    678,809
Hand & Machine Tools — 0.3%
Franklin Electric Co., Inc. 1,470 101,739
Hurco Cos., Inc. 200 6,000
Kennametal, Inc. 2,600 94,224
Luxfer Holdings PLC 1,000 16,420
    218,383
Healthcare Products — 4.6%
Accelerate Diagnostics, Inc.* 951 7,209
Accuray, Inc.* 2,738 11,417
  Number of
Shares
Value†
 
Healthcare Products — (continued)
Acutus Medical, Inc.* 300 $ 8,643
Alpha Pro Tech Ltd.* 500 5,575
Alphatec Holdings, Inc.* 1,300 18,876
AngioDynamics, Inc.* 1,158 17,752
Apyx Medical Corp.* 1,400 10,080
Aspira Women's Health, Inc.* 2,100 14,091
AtriCure, Inc.* 1,400 77,938
Atrion Corp. 44 28,259
Avanos Medical, Inc.* 1,500 68,820
Axogen, Inc.* 1,200 21,480
Axonics Modulation Technologies, Inc.* 1,000 49,920
BioLife Solutions, Inc.* 500 19,945
BioSig Technologies, Inc.* 700 2,730
BioTelemetry, Inc.* 1,000 72,080
Cantel Medical Corp. 1,200 94,632
Cardiovascular Systems, Inc.* 1,200 52,512
CareDx, Inc.* 1,500 108,675
Castle Biosciences, Inc.* 400 26,860
Cerus Corp.* 5,300 36,676
Chembio Diagnostics, Inc.* 1,100 5,225
Co-Diagnostics, Inc.* 900 8,370
CONMED Corp. 842 94,304
CryoLife, Inc.* 1,199 28,308
Cutera, Inc.* 500 12,055
CytoSorbents Corp.* 1,100 8,767
Eargo, Inc.* 300 13,446
Electromed, Inc.* 300 2,943
FONAR Corp.* 300 5,208
GenMark Diagnostics, Inc.* 2,100 30,660
Glaukos Corp.* 1,325 99,719
Hanger, Inc.* 1,100 24,189
Inari Medical, Inc.* 200 17,458
InfuSystem Holdings, Inc.* 600 11,268
Inogen, Inc.* 600 26,808
Inspire Medical Systems, Inc.* 805 151,412
Integer Holdings Corp.* 1,010 82,002
Intersect ENT, Inc.* 900 20,610
Invacare Corp. 1,190 10,651
iRadimed Corp.* 200 4,560
iRhythm Technologies, Inc.* 905 214,675
Lantheus Holdings, Inc.* 2,306 31,108
LeMaitre Vascular, Inc. 500 20,250
LivaNova PLC* 1,500 99,315
Luminex Corp. 1,353 31,281
Meridian Bioscience, Inc.* 1,360 25,418
Merit Medical Systems, Inc.* 1,675 92,979
Misonix, Inc.* 300 3,750
NanoString Technologies, Inc.* 1,400 93,632
Natera, Inc.* 2,300 228,896
Natus Medical, Inc.* 1,075 21,543
Neogen Corp.* 1,669 132,352
Nevro Corp.* 1,054 182,447
NuVasive, Inc.* 1,606 90,466
Nymox Pharmaceutical Corp.* 1,700 4,216
Omnicell, Inc.* 1,335 160,227
 
138


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Healthcare Products — (continued)
OraSure Technologies, Inc.* 2,201 $ 23,298
Orthofix Medical, Inc.* 571 24,542
OrthoPediatrics Corp.* 400 16,500
Patterson Cos., Inc. 2,600 77,038
Pulmonx Corp.* 400 27,608
Pulse Biosciences, Inc.* 482 11,501
Quanterix Corp.* 700 32,550
Quotient Ltd.* 2,200 11,462
Repro-Med Systems, Inc.* 1,000 6,020
Retractable Technologies, Inc.* 600 6,444
SeaSpine Holdings Corp.* 1,000 17,450
Shockwave Medical, Inc.* 900 93,348
Sientra, Inc.* 1,000 3,890
Silk Road Medical, Inc.* 900 56,682
Soleno Therapeutics, Inc.* 2,600 5,018
STAAR Surgical Co.* 1,400 110,908
Stereotaxis, Inc.* 1,700 8,653
Surgalign Holdings, Inc.* 2,035 4,457
Surmodics, Inc.* 473 20,585
Tactile Systems Technology, Inc.* 600 26,964
Utah Medical Products, Inc. 100 8,430
Varex Imaging Corp.* 1,300 21,684
ViewRay, Inc.* 4,100 15,662
Zynex, Inc.* 600 8,076
    3,483,458
Healthcare Services — 2.0%
Accolade, Inc.* 300 13,050
Addus HomeCare Corp.* 400 46,836
American Renal Associates Holdings, Inc.* 400 4,580
Brookdale Senior Living, Inc.* 6,200 27,466
Cellular Biomedicine Group, Inc.* 300 5,514
Community Health Systems, Inc.* 2,500 18,575
Dyadic International, Inc.* 800 4,304
Five Star Senior Living, Inc.* 900 6,210
Fulgent Genetics, Inc.* 300 15,630
Invitae Corp.* 3,600 150,516
LHC Group, Inc.* 954 203,507
Magellan Health, Inc.* 741 61,384
MEDNAX, Inc.* 2,300 56,442
Medpace Holdings, Inc.* 800 111,360
National HealthCare Corp. 406 26,962
Ontrak, Inc.* 200 12,358
OPKO Health, Inc.* 13,001 51,354
Personalis, Inc.* 700 25,627
RadNet, Inc.* 1,300 25,441
Select Medical Holdings Corp.* 3,400 94,044
SI-BONE, Inc.* 800 23,920
Surgery Partners, Inc.* 700 20,307
Tenet Healthcare Corp.* 3,300 131,769
The Ensign Group, Inc. 1,580 115,214
The Joint Corp.* 500 13,130
The Pennant Group, Inc.* 840 48,770
The Providence Service Corp.* 400 55,452
  Number of
Shares
Value†
 
Healthcare Services — (continued)
Tivity Health, Inc.* 1,489 $ 29,170
Triple-S Management Corp., Class B* 831 17,742
U.S. Physical Therapy, Inc. 407 48,942
Vapotherm, Inc.* 600 16,116
Viemed Healthcare, Inc.* 1,300 10,088
    1,491,780
Holding Companies — 0.0%
Professional Holding Corp., Class A* 367 5,663
Home Builders — 1.3%
Beazer Homes USA, Inc.* 924 13,999
Cavco Industries, Inc.* 279 48,950
Century Communities, Inc.* 900 39,402
Forestar Group, Inc.* 460 9,283
Green Brick Partners, Inc.* 600 13,776
Installed Building Products, Inc.* 700 71,351
KB Home 2,700 90,504
LCI Industries 791 102,577
LGI Homes, Inc.* 700 74,095
M/I Homes, Inc.* 936 41,455
MDC Holdings, Inc. 1,637 79,558
Meritage Homes Corp.* 1,190 98,556
Skyline Corp.* 1,600 49,504
Taylor Morrison Home Corp.* 3,900 100,035
TRI Pointe Group, Inc.* 3,800 65,550
Winnebago Industries, Inc. 1,022 61,259
    959,854
Home Furnishings — 0.5%
Casper Sleep, Inc.* 1,100 6,765
Daktronics, Inc. 1,209 5,658
Ethan Allen Interiors, Inc. 628 12,692
Hamilton Beach Brands Holding Co., Class A 144 2,521
Herman Miller, Inc. 1,932 65,302
Hooker Furniture Corp. 300 9,675
iRobot Corp.* 835 67,042
Purple Innovation, Inc.* 400 13,176
Sleep Number Corp.* 872 71,382
Sonos, Inc.* 2,400 56,136
The Lovesac Co.* 300 12,927
Universal Electronics, Inc.* 400 20,984
VOXX International Corp.* 500 6,380
    350,640
Household Products & Wares — 0.5%
ACCO Brands Corp. 2,893 24,446
Central Garden & Pet Co.* 300 11,583
Central Garden & Pet Co., Class A* 1,302 47,302
Helen of Troy Ltd.* 794 176,419
Quanex Building Products Corp. 1,025 22,724
WD-40 Co. 425 112,914
    395,388
Housewares — 0.1%
Lifetime Brands, Inc. 400 6,080
 
139


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Housewares — (continued)
Tupperware Brands Corp.* 1,600 $ 51,824
    57,904
Insurance — 2.6%
Ambac Financial Group, Inc.* 1,500 23,070
American Equity Investment Life Holding Co. 2,776 76,784
AMERISAFE, Inc. 608 34,917
Argo Group International Holdings Ltd. 1,032 45,098
BRP Group, Inc., Class A* 1,300 38,961
Citizens, Inc.* 1,466 8,400
CNO Financial Group, Inc. 4,393 97,656
Crawford & Co., Class A 700 5,173
Donegal Group, Inc., Class A 283 3,982
eHealth, Inc.* 820 57,900
Employers Holdings, Inc. 982 31,611
Enstar Group Ltd.* 366 74,990
Essent Group Ltd. 3,500 151,200
FBL Financial Group, Inc., Class A 327 17,171
FedNat Holding Co. 500 2,960
Genworth Financial, Inc., Class A* 15,500 58,590
Goosehead Insurance, Inc., Class A 400 49,904
Greenlight Capital Re Ltd., Class A* 1,128 8,246
HCI Group, Inc. 200 10,460
Heritage Insurance Holdings, Inc. 800 8,104
Horace Mann Educators Corp. 1,280 53,811
Independence Holding Co. 100 4,100
Investors Title Co. 39 5,967
James River Group Holdings Ltd. 1,000 49,150
Kinsale Capital Group, Inc. 663 132,686
MBIA, Inc.* 1,200 7,896
National General Holdings Corp. 2,100 71,778
National Western Life Group, Inc., Class A 74 15,277
NI Holdings, Inc.* 200 3,284
NMI Holdings, Inc., Class A* 2,500 56,625
Palomar Holdings, Inc.* 600 53,304
ProAssurance Corp. 1,600 28,464
ProSight Global, Inc.* 400 5,132
Protective Insurance Corp., Class B 325 4,456
Radian Group, Inc. 6,003 121,561
RLI Corp. 1,236 128,729
Safety Insurance Group, Inc. 482 37,548
Selective Insurance Group, Inc. 1,875 125,587
Selectquote, Inc.* 1,000 20,750
State Auto Financial Corp. 576 10,218
Stewart Information Services Corp. 808 39,075
Third Point Reinsurance Ltd.* 2,400 22,848
Tiptree, Inc. 1,100 5,522
Trean Insurance Group, Inc.* 500 6,550
Trupanion, Inc.* 900 107,739
United Fire Group, Inc. 680 17,068
United Insurance Holdings Corp. 800 4,576
Universal Insurance Holdings, Inc. 1,051 15,881
  Number of
Shares
Value†
 
Insurance — (continued)
Watford Holdings Ltd.* 500 $ 17,300
    1,978,059
Internet — 2.2%
1-800-Flowers.com, Inc., Class A* 737 19,162
Boingo Wireless, Inc.* 1,400 17,808
Cargurus, Inc.* 2,700 85,671
CarParts.com, Inc.* 800 9,912
Cars.com, Inc.* 2,300 25,990
ChannelAdvisor Corp.* 900 14,382
Cogent Communications Holdings, Inc. 1,319 78,969
comScore, Inc.* 1,900 4,731
DHI Group, Inc.* 2,100 4,662
Endurance International Group Holdings, Inc.* 2,000 18,900
ePlus, Inc.* 430 37,819
Eventbrite, Inc., Class A* 2,000 36,200
EverQuote, Inc., Class A* 500 18,675
Groupon, Inc.* 750 28,496
HealthStream, Inc.* 900 19,656
Lands' End, Inc.* 300 6,471
Limelight Networks, Inc.* 4,172 16,646
Liquidity Services, Inc.* 1,035 16,467
LiveXLive Media, Inc.* 1,500 4,920
Magnite, Inc.* 3,206 98,456
MediaAlpha, Inc., Class A* 300 11,721
Mimecast Ltd.* 1,800 102,312
NIC, Inc. 2,129 54,992
Overstock.com, Inc.* 1,300 62,361
Perficient, Inc.* 1,045 49,794
Q2 Holdings, Inc.* 1,600 202,448
QuinStreet, Inc.* 1,615 34,626
Shutterstock, Inc. 700 50,190
Stamps.com, Inc.* 529 103,785
Stitch Fix, Inc., Class A* 1,800 105,696
TechTarget, Inc.* 800 47,288
The RealReal, Inc.* 1,900 37,126
TrueCar, Inc.* 3,500 14,700
Tucows, Inc., Class A* 300 22,167
Upwork, Inc.* 2,900 100,108
VirnetX Holding Corp. 2,283 11,506
Yelp, Inc.* 2,300 75,141
Zix Corp.* 1,848 15,948
    1,665,902
Investment Companies — 0.2%
Cannae Holdings, Inc.* 2,700 119,529
Grid Dynamics Holdings, Inc.* 900 11,340
PDL Community Bancorp* 400 4,204
Rafael Holdings, Inc., Class B* 400 9,328
StepStone Group, Inc., Class A* 600 23,880
    168,281
Iron & Steel — 0.7%
Allegheny Technologies, Inc.* 4,100 68,757
Carpenter Technology Corp. 1,500 43,680
 
140


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Iron & Steel — (continued)
Cleveland-Cliffs, Inc. 12,380 $ 180,253
Commercial Metals Co. 3,600 73,944
Schnitzer Steel Industries, Inc., Class A 900 28,719
United States Steel Corp. 6,800 114,036
    509,389
Leisure Time — 0.6%
Acushnet Holdings Corp. 1,100 44,594
Callaway Golf Co. 2,846 68,332
Camping World Holdings, Inc., Class A 1,000 26,050
Clarus Corp. 702 10,811
Escalade, Inc. 200 4,234
Johnson Outdoors, Inc., Class A 168 18,922
Liberty TripAdvisor Holdings, Inc., Class A* 2,400 10,416
Lindblad Expeditions Holdings, Inc.* 700 11,984
Malibu Boats, Inc., Class A* 600 37,464
Marine Products Corp. 88 1,280
MasterCraft Boat Holdings, Inc.* 500 12,420
Nautilus, Inc.* 900 16,326
OneSpaWorld Holdings Ltd. 1,600 16,224
OneWater Marine, Inc., Class A* 200 5,818
Vista Outdoor, Inc.* 1,700 40,392
YETI Holdings, Inc.* 2,500 171,175
    496,442
Lodging — 0.3%
Bluegreen Vacations Corp. 400 3,176
Bluegreen Vacations Holding Corp. 500 6,765
Boyd Gaming Corp.* 2,566 110,133
Century Casinos, Inc.* 1,100 7,029
Hilton Grand Vacations, Inc.* 2,600 81,510
Target Hospitality Corp.* 1,300 2,054
The Marcus Corp. 733 9,881
    220,548
Machinery — Construction & Mining — 0.3%
Argan, Inc. 436 19,398
Astec Industries, Inc. 698 40,400
Bloom Energy Corp., Class A* 2,700 77,382
Hyster-Yale Materials Handling, Inc. 344 20,485
Terex Corp. 2,100 73,269
The Manitowoc Co., Inc.* 1,025 13,643
    244,577
Machinery — Diversified — 1.4%
Alamo Group, Inc. 317 43,730
Altra Industrial Motion Corp. 2,003 111,026
Applied Industrial Technologies, Inc. 1,182 92,184
Cactus, Inc., Class A 1,600 41,712
Chart Industries, Inc.* 1,077 126,860
CIRCOR International, Inc.* 635 24,409
Columbus McKinnon Corp. 785 30,176
CSW Industrials, Inc. 400 44,764
DXP Enterprises, Inc.* 522 11,604
Eastman Kodak Co.* 800 6,512
Gencor Industries, Inc.* 500 6,150
  Number of
Shares
Value†
 
Machinery — Diversified — (continued)
Ichor Holdings Ltd.* 700 $ 21,102
Intevac, Inc.* 1,000 7,210
Kadant, Inc. 347 48,920
Lindsay Corp. 355 45,603
Mueller Water Products, Inc., Class A 4,692 58,087
NN, Inc.* 1,600 10,512
Ranpak Holdings Corp.* 1,100 14,784
SPX FLOW, Inc.* 1,300 75,348
Tennant Co. 536 37,611
The Gorman-Rupp Co. 551 17,880
Watts Water Technologies, Inc., Class A 851 103,567
Welbilt, Inc.* 4,200 55,440
    1,035,191
Media — 0.6%
AMC Networks, Inc., Class A* 800 28,616
Entercom Communications Corp., Class A 4,100 10,127
Entravision Communications Corp., Class A 2,800 7,700
Gannett Co., Inc.* 4,253 14,290
Gray Television, Inc.* 2,900 51,881
Hemisphere Media Group, Inc.* 400 4,144
Houghton Mifflin Harcourt Co.* 3,100 10,323
iHeartMedia, Inc., Class A* 2,100 27,258
Liberty Latin America Ltd., Class A* 1,400 15,582
Liberty Latin America Ltd., Class C* 4,752 52,700
Meredith Corp. 1,200 23,040
MSG Networks, Inc., Class A* 800 11,792
Saga Communications, Inc., Class A 133 3,195
Scholastic Corp. 956 23,900
Sinclair Broadcast Group, Inc., Class A 1,400 44,590
TEGNA, Inc. 6,700 93,465
The E.W. Scripps Co., Class A 1,929 29,494
Tribune Publishing Co. 700 9,590
WideOpenWest, Inc.* 1,400 14,938
    476,625
Metal Fabricate/Hardware — 1.1%
Advanced Drainage Systems, Inc. 1,700 142,086
AZZ, Inc. 876 41,557
Helios Technologies, Inc. 959 51,105
L.B. Foster Co., Class A* 400 6,020
Lawson Products, Inc.* 100 5,091
Mueller Industries, Inc. 1,688 59,266
Northwest Pipe Co.* 300 8,490
Olympic Steel, Inc. 231 3,079
Omega Flex, Inc. 59 8,614
Park-Ohio Holdings Corp. 200 6,180
Proto Labs, Inc.* 835 128,089
RBC Bearings, Inc.* 770 137,861
Rexnord Corp. 3,800 150,062
Ryerson Holding Corp.* 400 5,456
The Eastern Co. 100 2,410
TimkenSteel Corp.* 1,400 6,538
Tredegar Corp. 761 12,709
 
141


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Metal Fabricate/Hardware — (continued)
Worthington Industries, Inc. 1,184 $ 60,786
    835,399
Mining — 1.0%
Alcoa Corp.* 5,800 133,690
Arconic Corp.* 3,100 92,380
Caledonia Mining Corp. PLC 300 4,764
Century Aluminum Co.* 1,754 19,347
Coeur Mining, Inc.* 7,328 75,845
Compass Minerals International, Inc. 1,000 61,720
Energy Fuels, Inc.* 3,500 14,910
Ferroglobe Representation & Warranty Insurance Trust Units(1) 2,414 0
Fortitude Gold Corp.* 685 719
Gatos Silver, Inc.* 700 9,121
Gold Resource Corp. 2,400 6,984
Hecla Mining Co. 15,991 103,622
Kaiser Aluminum Corp. 516 51,032
Livent Corp.* 4,500 84,780
Novagold Resources, Inc.* 7,300 70,591
United States Lime & Minerals, Inc. 29 3,306
Uranium Energy Corp.* 5,300 9,328
    742,139
Miscellaneous Manufacturing — 1.1%
American Outdoor Brands, Inc.* 469 7,987
Chase Corp. 251 25,354
Enerpac Tool Group Corp. 1,706 38,573
EnPro Industries, Inc. 617 46,596
ESCO Technologies, Inc. 734 75,763
Fabrinet* 1,100 85,349
Federal Signal Corp. 1,943 64,449
Haynes International, Inc. 364 8,678
Hillenbrand, Inc. 2,244 89,311
John Bean Technologies Corp. 976 111,137
Lydall, Inc.* 600 18,018
Materion Corp. 657 41,864
Myers Industries, Inc. 1,125 23,378
NL Industries, Inc. 90 430
Raven Industries, Inc. 1,146 37,921
Smith & Wesson Brands, Inc. 1,879 33,352
Standex International Corp. 400 31,008
Sturm Ruger & Co., Inc. 519 33,771
Trinseo S.A. 1,200 61,452
    834,391
Office & Business Equipment — 0.0%
Pitney Bowes, Inc. 5,500 33,880
Office Furnishings — 0.2%
HNI Corp. 1,243 42,834
Interface, Inc. 1,995 20,947
Kimball International, Inc., Class B 1,244 14,866
Knoll, Inc. 1,553 22,798
Steelcase, Inc., Class A 2,831 38,360
    139,805
  Number of
Shares
Value†
 
Oil & Gas — 1.2%
Antero Resources Corp.* 7,200 $ 39,240
Berry Corp. 2,100 7,728
Bonanza Creek Energy, Inc.* 700 13,531
Brigham Minerals, Inc., Class A 1,100 12,089
CNX Resources Corp.* 6,800 73,440
Cobalt International Energy, Inc.(1) 1 0
Comstock Resources, Inc.* 800 3,496
Contango Oil & Gas Co.* 3,400 7,786
CVR Energy, Inc. 1,000 14,900
Delek US Holdings, Inc. 1,779 28,589
Earthstone Energy, Inc., Class A* 700 3,731
Evolution Petroleum Corp. 1,200 3,420
Falcon Minerals Corp. 1,500 4,725
Goodrich Petroleum Corp.* 500 5,045
Kosmos Energy Ltd. 11,600 27,260
Magnolia Oil & Gas Corp., Class A* 3,600 25,416
Matador Resources Co.* 3,500 42,210
Murphy USA, Inc. 859 112,417
Nabors Industries Ltd. 218 12,694
Ovintiv, Inc. 8,200 117,752
Par Pacific Holdings, Inc.* 1,218 17,028
Patterson-UTI Energy, Inc. 5,600 29,456
PBF Energy, Inc., Class A 3,400 24,140
PDC Energy, Inc.* 3,055 62,719
Penn Virginia Corp.* 400 4,060
Range Resources Corp.* 6,800 45,560
SM Energy Co. 3,700 22,644
Southwestern Energy Co.* 19,552 58,265
Talos Energy, Inc.* 600 4,944
Tellurian, Inc.* 3,400 4,352
Transocean Ltd.* 17,600 40,656
Trecora Resources* 1,000 6,990
W&T Offshore, Inc.* 3,543 7,688
Whiting Petroleum Corp.* 52 1,300
    885,271
Oil & Gas Services — 0.6%
Archrock, Inc. 4,200 36,372
ChampionX Corp.* 5,700 87,210
DMC Global, Inc. 500 21,625
Dril-Quip, Inc.* 1,200 35,544
Exterran Corp.* 1,000 4,420
Frank's International N.V.* 4,000 10,960
Helix Energy Solutions Group, Inc.* 4,501 18,904
Liberty Oilfield Services, Inc., Class A 2,000 20,620
Matrix Service Co.* 987 10,877
MRC Global, Inc.* 2,400 15,912
National Energy Services Reunited Corp.* 500 4,965
Newpark Resources, Inc.* 2,712 5,207
NexTier Oilfield Solutions, Inc.* 4,991 17,169
NOW, Inc.* 3,600 25,848
Oceaneering International, Inc.* 3,300 26,235
Oil States International, Inc.* 2,000 10,040
ProPetro Holding Corp.* 2,800 20,692
 
142


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Oil & Gas Services — (continued)
RPC, Inc.* 2,200 $ 6,930
Select Energy Services, Inc., Class A* 2,100 8,610
Solaris Oilfield Infrastructure, Inc., Class A 1,100 8,954
Thermon Group Holdings, Inc.* 1,100 17,193
US Silica Holdings, Inc. 2,600 18,252
    432,539
Packaging and Containers — 0.3%
Greif, Inc., Class A 800 37,504
Greif, Inc., Class B 200 9,676
Matthews International Corp., Class A 1,005 29,547
O-I Glass, Inc. 4,800 57,120
Pactiv Evergreen, Inc.* 1,200 21,768
TriMas Corp.* 1,295 41,013
UFP Technologies, Inc.* 200 9,320
    205,948
Pharmaceuticals — 3.0%
89bio, Inc.* 100 2,437
AcelRx Pharmaceuticals, Inc.* 3,300 4,092
AdaptHealth Corp.* 800 30,048
Aeglea BioTherapeutics, Inc.* 1,500 11,805
Aerie Pharmaceuticals, Inc.* 1,100 14,861
Agile Therapeutics, Inc.* 2,700 7,749
Akebia Therapeutics, Inc.* 4,510 12,628
Alector, Inc.* 1,600 24,208
Allovir, Inc.* 500 19,220
Amneal Pharmaceuticals, Inc.* 2,937 13,422
Amphastar Pharmaceuticals, Inc.* 1,100 22,121
Anika Therapeutics, Inc.* 400 18,104
Antares Pharma, Inc.* 5,600 22,344
Aquestive Therapeutics, Inc.* 900 4,815
Arvinas, Inc.* 1,100 93,423
Athenex, Inc.* 1,900 21,014
Beyond Air, Inc.* 600 3,162
Beyondspring, Inc.* 400 4,880
BioDelivery Sciences International, Inc.* 3,100 13,020
Bioxcel Therapeutics, Inc.* 400 18,480
Calyxt, Inc.* 300 1,266
Cassava Sciences, Inc.* 900 6,138
Catalyst Biosciences, Inc.* 800 5,048
Catalyst Pharmaceuticals, Inc.* 2,800 9,352
Checkpoint Therapeutics, Inc.* 2,500 6,625
Chiasma, Inc.* 1,100 4,785
Chimerix, Inc.* 1,700 8,211
Cidara Therapeutics, Inc.* 1,400 2,800
Clovis Oncology, Inc.* 2,600 12,480
Coherus Biosciences, Inc.* 2,000 34,760
Collegium Pharmaceutical, Inc.* 1,000 20,030
Concert Pharmaceuticals, Inc.* 900 11,376
Corbus Pharmaceuticals Holdings, Inc.* 2,500 3,125
Corcept Therapeutics, Inc.* 3,000 78,480
CorMedix, Inc.* 1,000 7,430
Covetrus, Inc.* 3,600 103,464
Cyclerion Therapeutics, Inc.* 976 2,987
  Number of
Shares
Value†
 
Pharmaceuticals — (continued)
Cytokinetics, Inc.* 2,200 $ 45,716
Durect Corp.* 7,200 14,904
Eagle Pharmaceuticals, Inc.* 300 13,971
Eidos Therapeutics, Inc.* 300 39,474
Eloxx Pharmaceuticals, Inc.* 800 3,184
Enanta Pharmaceuticals, Inc.* 600 25,260
Endo International PLC* 6,700 48,106
Eton Pharmaceuticals, Inc.* 700 5,691
Evofem Biosciences, Inc.* 1,161 2,798
Fennec Pharmaceuticals, Inc.* 900 6,705
Flexion Therapeutics, Inc.* 1,200 13,848
Fortress Biotech, Inc.* 2,400 7,608
Fulcrum Therapeutics, Inc.* 400 4,684
G1 Therapeutics, Inc.* 1,200 21,588
Galectin Therapeutics, Inc.* 1,400 3,136
Gritstone Oncology, Inc.* 1,000 3,940
Harmony Biosciences Holdings, Inc.* 200 7,230
Harpoon Therapeutics, Inc.* 200 3,322
Harrow Health, Inc.* 1,000 6,860
Heron Therapeutics, Inc.* 2,700 57,146
Heska Corp.* 216 31,460
Hookipa Pharma, Inc.* 500 5,545
Ideaya Biosciences, Inc.* 500 7,000
IMARA, Inc.* 200 4,410
Intellia Therapeutics, Inc.* 1,500 81,600
Ironwood Pharmaceuticals, Inc.* 4,861 55,367
Jounce Therapeutics, Inc.* 400 2,800
Kadmon Holdings, Inc.* 5,800 24,070
Kala Pharmaceuticals, Inc.* 1,400 9,492
KalVista Pharmaceuticals, Inc.* 500 9,495
Kura Oncology, Inc.* 1,900 62,054
La Jolla Pharmaceutical Co.* 700 2,716
Lannett Co., Inc.* 997 6,500
Lifevantage Corp.* 600 5,592
Madrigal Pharmaceuticals, Inc.* 267 29,682
MannKind Corp.* 7,801 24,417
Marinus Pharmaceuticals, Inc.* 875 10,675
MediciNova, Inc.* 1,400 7,364
Minerva Neurosciences, Inc.* 800 1,872
Mirum Pharmaceuticals, Inc.* 100 1,746
Morphic Holding, Inc.* 500 16,775
Nature's Sunshine Products, Inc.* 200 2,990
Neoleukin Therapeutics, Inc.* 1,100 15,510
NeuBase Therapeutics, Inc.* 700 4,893
Ocular Therapeutix, Inc.* 2,100 43,470
Odonate Therapeutics, Inc.* 400 7,680
Optinose, Inc.* 1,200 4,968
Option Care Health, Inc.* 1,502 23,491
ORIC Pharmaceuticals, Inc.* 700 23,695
Owens & Minor, Inc. 2,276 61,566
Pacira BioSciences, Inc.* 1,300 77,792
Paratek Pharmaceuticals, Inc.* 1,800 11,268
Passage Bio, Inc.* 800 20,456
PetIQ, Inc.* 700 26,915
PhaseBio Pharmaceuticals, Inc.* 600 2,016
 
143


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Pharmaceuticals — (continued)
Phibro Animal Health Corp., Class A 700 $ 13,594
PMV Pharmaceuticals, Inc.* 400 24,604
Prestige Consumer Healthcare, Inc.* 1,472 51,329
Protagonist Therapeutics, Inc.* 1,000 20,160
Recro Pharma, Inc.* 500 1,425
Relmada Therapeutics, Inc.* 500 16,035
Revance Therapeutics, Inc.* 2,000 56,680
Rhythm Pharmaceuticals, Inc.* 1,100 32,703
Rockwell Medical, Inc.* 1,800 1,818
Seres Therapeutics, Inc.* 1,700 41,650
SIGA Technologies, Inc.* 2,000 14,540
Spectrum Pharmaceuticals, Inc.* 5,014 17,098
Spero Therapeutics, Inc.* 460 8,919
Supernus Pharmaceuticals, Inc.* 1,500 37,740
Syros Pharmaceuticals, Inc.* 1,400 15,190
TherapeuticsMD, Inc.* 7,200 8,712
Tricida, Inc.* 1,000 7,050
UroGen Pharma Ltd.* 700 12,614
USANA Health Sciences, Inc.* 348 26,831
Vanda Pharmaceuticals, Inc.* 1,841 24,191
Vaxcyte, Inc.* 600 15,942
Verrica Pharmaceuticals, Inc.* 600 6,906
Voyager Therapeutics, Inc.* 900 6,435
Xeris Pharmaceuticals, Inc.* 800 3,936
Zogenix, Inc.* 1,875 37,481
    2,246,286
Real Estate — 0.9%
Cushman & Wakefield PLC* 3,400 50,422
eXp World Holdings, Inc.* 800 50,496
Fathom Holdings, Inc.* 100 3,604
FRP Holdings, Inc.* 269 12,253
Indus Realty Trust, Inc.* 100 6,250
Kennedy-Wilson Holdings, Inc. 3,681 65,853
Legacy Housing Corp.* 300 4,533
Marcus & Millichap, Inc.* 800 29,784
Maui Land & Pineapple Co., Inc.* 400 4,612
McGrath RentCorp 753 50,526
Newmark Group, Inc., Class A 4,700 34,263
RE/MAX Holdings, Inc., Class A 600 21,798
Realogy Holdings Corp.* 3,500 45,920
Redfin Corp.* 3,100 212,753
Stratus Properties, Inc.* 100 2,550
The RMR Group, Inc., Class A 467 18,036
The St. Joe Co. 1,000 42,450
    656,103
Retail — 5.1%
Abercrombie & Fitch Co., Class A 1,900 38,684
Academy Sports & Outdoors, Inc.* 600 12,438
American Eagle Outfitters, Inc. 4,700 94,329
America's Car-Mart, Inc.* 180 19,771
Asbury Automotive Group, Inc.* 596 86,861
Aspen Aerogels, Inc.* 600 10,014
At Home Group, Inc.* 1,700 26,282
Beacon Roofing Supply, Inc.* 1,781 71,578
  Number of
Shares
Value†
 
Retail — (continued)
Bed Bath & Beyond, Inc. 3,900 $ 69,264
Big Lots, Inc. 1,300 55,809
Biglari Holdings, Inc., Class B* 40 4,448
BJ's Restaurants, Inc.* 620 23,864
BJ's Wholesale Club Holdings, Inc.* 4,300 160,304
Bloomin' Brands, Inc. 2,900 56,318
BMC Stock Holdings, Inc.* 2,100 112,728
Boot Barn Holdings, Inc.* 900 39,024
Brinker International, Inc. 1,400 79,198
Caleres, Inc. 1,354 21,190
Carrols Restaurant Group, Inc.* 1,113 6,990
Chico's FAS, Inc. 4,000 6,360
Chuy's Holdings, Inc.* 600 15,894
Citi Trends, Inc. 303 15,053
Conn's, Inc.* 704 8,230
Cracker Barrel Old Country Store, Inc. 737 97,225
Dave & Buster's Entertainment, Inc. 1,400 42,028
Del Taco Restaurants, Inc.* 1,100 9,966
Denny's Corp.* 1,952 28,655
Designer Brands, Inc., Class A 1,900 14,535
Dillard's, Inc., Class A 200 12,610
Dine Brands Global, Inc. 471 27,318
Duluth Holdings, Inc., Class B* 200 2,112
El Pollo Loco Holdings, Inc.* 600 10,860
Express, Inc.* 1,654 1,505
Fiesta Restaurant Group, Inc.* 413 4,708
FirstCash, Inc. 1,239 86,780
Foundation Building Materials, Inc.* 800 15,368
Freshpet, Inc.* 1,213 172,234
Gaia, Inc.* 400 3,952
GameStop Corp., Class A* 1,800 33,912
Genesco, Inc.* 495 14,895
GMS, Inc.* 1,400 42,672
Group 1 Automotive, Inc. 535 70,160
GrowGeneration Corp.* 1,100 44,242
Guess?, Inc. 1,100 24,882
Haverty Furniture Cos., Inc. 550 15,219
Hibbett Sports, Inc.* 555 25,630
Jack in the Box, Inc. 714 66,259
La-Z-Boy, Inc. 1,362 54,262
Lithia Motors, Inc., Class A 802 234,721
Lumber Liquidators Holdings, Inc.* 833 25,606
Macy's, Inc. 9,700 109,125
MarineMax, Inc.* 700 24,521
Movado Group, Inc.* 460 7,645
National Vision Holdings, Inc.* 2,500 113,225
Noodles & Co.* 1,200 9,480
OptimizeRx Corp.* 500 15,580
Papa John's International, Inc. 1,010 85,699
PC Connection, Inc.* 365 17,261
PetMed Express, Inc. 613 19,653
PriceSmart, Inc. 731 66,587
Red Robin Gourmet Burgers, Inc.* 420 8,077
Regis Corp.* 732 6,727
RH* 489 218,837
 
144


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Retail — (continued)
Rite Aid Corp.* 1,910 $ 30,235
Rush Enterprises, Inc., Class A 1,302 53,929
Rush Enterprises, Inc., Class B 150 5,684
Ruth's Hospitality Group, Inc. 895 15,868
Sally Beauty Holdings, Inc.* 3,300 43,032
Shake Shack, Inc., Class A* 1,100 93,258
Shoe Carnival, Inc. 258 10,109
Signet Jewelers Ltd. 1,700 46,359
Sonic Automotive, Inc., Class A 734 28,310
Sportsman's Warehouse Holdings, Inc.* 1,300 22,815
Texas Roadhouse, Inc. 2,070 161,791
The Buckle, Inc. 849 24,791
The Cato Corp., Class A 704 6,751
The Cheesecake Factory, Inc. 1,316 48,771
The Children's Place, Inc.* 494 24,749
The Container Store Group, Inc.* 600 5,724
The Michaels Cos, Inc.* 2,200 28,622
The ODP Corp. 1,570 46,001
Tilly's, Inc., Class A 800 6,528
Vera Bradley, Inc.* 800 6,368
Waitr Holdings, Inc.* 2,000 5,560
Wingstop, Inc. 925 122,609
Winmark Corp. 106 19,695
World Fuel Services Corp. 1,900 59,204
Zumiez, Inc.* 703 25,856
    3,861,983
Savings & Loans — 1.0%
Axos Financial, Inc.* 1,800 67,554
Banc of California, Inc. 1,300 19,123
BankFinancial Corp. 609 5,347
Berkshire Hills Bancorp, Inc. 1,542 26,399
Brookline Bancorp, Inc. 2,522 30,365
Capitol Federal Financial, Inc. 3,900 48,750
Community Bankers Trust Corp. 600 4,050
Dime Community Bancshares, Inc. 930 14,666
Eagle Bancorp Montana, Inc. 300 6,366
ESSA Bancorp, Inc. 200 3,000
First Capital, Inc. 100 6,056
First Savings Financial Group, Inc. 100 6,500
Flushing Financial Corp. 838 13,944
FS Bancorp, Inc. 100 5,480
Greene County Bancorp, Inc. 200 5,098
Home Bancorp, Inc. 300 8,397
HomeTrust Bancshares, Inc. 500 9,655
Investors Bancorp, Inc. 7,155 75,557
Meridian Bancorp, Inc. 1,474 21,978
Northfield Bancorp, Inc. 1,293 15,943
Northwest Bancshares, Inc. 3,455 44,017
OceanFirst Financial Corp. 1,910 35,583
Pacific Premier Bancorp, Inc. 2,446 76,633
Provident Financial Holdings, Inc. 300 4,713
Provident Financial Services, Inc. 2,074 37,249
Prudential Bancorp, Inc. 400 5,540
Riverview Bancorp, Inc. 500 2,630
  Number of
Shares
Value†
 
Savings & Loans — (continued)
Southern Missouri Bancorp, Inc. 300 $ 9,132
Territorial Bancorp, Inc. 243 5,839
The Hingham Institution for Savings 43 9,288
Timberland Bancorp, Inc. 300 7,278
Washington Federal, Inc. 2,300 59,202
Waterstone Financial, Inc. 800 15,056
WSFS Financial Corp. 1,506 67,589
    773,977
Semiconductors — 2.7%
Alpha & Omega Semiconductor Ltd.* 600 14,184
Ambarella, Inc.* 1,000 91,820
Amkor Technology, Inc. 3,011 45,406
Atomera, Inc.* 600 9,654
Axcelis Technologies, Inc.* 1,025 29,848
AXT, Inc.* 1,500 14,355
Brooks Automation, Inc. 2,277 154,494
CEVA, Inc.* 671 30,530
CMC Materials, Inc. 854 129,210
Cohu, Inc. 1,324 50,550
CTS Corp. 1,063 36,493
Diodes, Inc.* 1,299 91,579
DSP Group, Inc.* 800 13,272
FormFactor, Inc.* 2,429 104,496
GSI Technology, Inc.* 700 5,180
Impinj, Inc.* 500 20,935
Intellicheck, Inc.* 700 7,984
Lattice Semiconductor Corp.* 4,224 193,544
MACOM Technology Solutions Holdings, Inc.* 1,522 83,771
MaxLinear, Inc.* 2,043 78,022
Onto Innovation, Inc.* 1,547 73,560
Photronics, Inc.* 2,092 23,347
Pixelworks, Inc.* 1,600 4,512
Power Integrations, Inc. 1,844 150,950
Rambus, Inc.* 3,523 61,512
Semtech Corp.* 2,009 144,829
Silicon Laboratories, Inc.* 1,359 173,055
SiTime Corp.* 300 33,579
Synaptics, Inc.* 1,016 97,942
Ultra Clean Holdings, Inc.* 1,300 40,495
Veeco Instruments, Inc.* 1,654 28,713
    2,037,821
Software — 5.9%
1Life Healthcare, Inc.* 2,400 104,760
8X8, Inc.* 3,200 110,304
ACI Worldwide, Inc.* 3,627 139,386
Agilysys, Inc.* 576 22,107
Allscripts Healthcare Solutions, Inc.* 5,000 72,200
Altair Engineering, Inc., Class A* 1,400 81,452
American Software, Inc., Class A 893 15,333
Apollo Medical Holdings, Inc.* 700 12,789
Appfolio, Inc., Class A* 505 90,920
Appian Corp.* 1,100 178,299
Asure Software, Inc.* 600 4,260
 
145


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Software — (continued)
Avaya Holdings Corp.* 2,500 $ 47,875
Avid Technology, Inc.* 1,100 17,457
Bandwidth, Inc., Class A* 596 91,587
Benefitfocus, Inc.* 900 13,032
Blackbaud, Inc. 1,550 89,218
Blackline, Inc.* 1,600 213,408
Bottomline Technologies, Inc.* 1,445 76,209
Box, Inc., Class A* 4,300 77,615
Brightcove, Inc.* 1,200 22,080
Cardlytics, Inc.* 800 114,216
Cerence, Inc.* 1,100 110,528
Cloudera, Inc.* 6,293 87,536
CommVault Systems, Inc.* 1,248 69,102
Computer Programs and Systems, Inc. 447 11,997
Cornerstone OnDemand, Inc.* 1,900 83,676
CSG Systems International, Inc. 1,081 48,721
Daily Journal Corp.* 41 16,564
Digi International, Inc.* 857 16,197
Digital Turbine Inc* 2,600 147,056
Domo, Inc., Class B* 800 51,016
Donnelley Financial Solutions, Inc.* 1,000 16,970
Ebix, Inc. 736 27,946
eGain Corp.* 500 5,905
Envestnet, Inc.* 1,613 132,734
Evolent Health, Inc., Class A* 2,400 38,472
Glu Mobile, Inc.* 4,400 39,644
GTY Technology Holdings, Inc.* 1,200 6,216
Health Catalyst, Inc.* 1,100 47,883
Immersion Corp.* 342 3,861
Inovalon Holdings, Inc., Class A* 2,200 39,974
Intelligent Systems Corp.* 200 8,022
J2 Global, Inc.* 1,374 134,226
LivePerson, Inc.* 1,925 119,793
ManTech International Corp., Class A 839 74,621
MicroStrategy, Inc., Class A* 222 86,258
Model N, Inc.* 1,100 39,248
NantHealth, Inc.* 1,200 3,876
NextGen Healthcare, Inc.* 1,804 32,905
Outset Medical, Inc.* 300 17,052
PDF Solutions, Inc.* 1,000 21,600
Phreesia, Inc.* 1,000 54,260
Progress Software Corp. 1,326 59,922
PROS Holdings, Inc.* 1,217 61,787
QAD, Inc., Class A 392 24,766
Red Violet, Inc.* 300 7,833
Sailpoint Technologies Holdings, Inc.* 2,800 149,072
Sapiens International Corp. N.V. 900 27,549
Schrodinger, Inc.* 900 71,262
Simulations Plus, Inc. 400 28,768
Smith Micro Software, Inc.* 1,400 7,588
Sprout Social, Inc., Class A* 800 36,328
SPS Commerce, Inc.* 1,093 118,689
Sumo Logic, Inc.* 400 11,432
SVMK, Inc.* 3,800 97,090
Synchronoss Technologies, Inc.* 1,500 7,050
  Number of
Shares
Value†
 
Software — (continued)
Tabula Rasa HealthCare, Inc.* 700 $ 29,988
Upland Software, Inc.* 800 36,712
Verint Systems, Inc.* 1,995 134,024
Veritone, Inc.* 800 22,760
Verra Mobility Corp.* 4,000 53,680
Workiva, Inc.* 1,200 109,944
Xperi Holding Corp. 3,253 67,988
Yext, Inc.* 3,200 50,304
Zuora, Inc., Class A* 3,000 41,790
    4,444,692
Telecommunications — 1.6%
A10 Networks, Inc.* 1,900 18,734
Acacia Communications, Inc.* 1,200 87,552
ADTRAN, Inc. 1,705 25,183
Alaska Communications Systems Group, Inc. 2,200 8,118
Anterix, Inc.* 400 15,040
ATN International, Inc. 398 16,620
CalAmp Corp.* 1,000 9,920
Calix, Inc.* 1,693 50,384
Cambium Networks Corp.* 200 5,016
Casa Systems, Inc.* 1,200 7,404
Cincinnati Bell, Inc.* 1,682 25,701
Clearfield, Inc.* 400 9,888
Consolidated Communications Holdings, Inc.* 2,571 12,572
DZS, Inc.* 200 3,094
Extreme Networks, Inc.* 4,147 28,573
Gogo, Inc.* 1,700 16,371
GTT Communications, Inc.* 1,000 3,570
Harmonic, Inc.* 2,870 21,209
HC2 Holdings, Inc.* 1,083 3,531
IDT Corp., Class B* 700 8,652
Infinera Corp.* 4,794 50,241
Inseego Corp.* 2,400 37,128
InterDigital, Inc. 994 60,316
Iridium Communications, Inc.* 3,700 145,502
KVH Industries, Inc.* 354 4,018
Loral Space & Communications, Inc. 446 9,362
Maxar Technologies, Inc. 1,900 73,321
NeoPhotonics Corp.* 1,800 16,362
NETGEAR, Inc.* 829 33,682
Ooma, Inc.* 700 10,080
ORBCOMM, Inc.* 2,700 20,034
PCTEL, Inc.* 800 5,256
Plantronics, Inc. 1,067 28,841
Powerfleet, Inc.* 1,200 8,916
Preformed Line Products Co. 145 9,924
Rackspace Technology, Inc.* 1,000 19,060
Resonant, Inc.* 2,100 5,565
Ribbon Communications, Inc.* 1,843 12,090
Shenandoah Telecommunications Co. 1,518 65,653
Spok Holdings, Inc. 612 6,812
Viavi Solutions, Inc.* 7,000 104,825
 
146


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Telecommunications — (continued)
Vonage Holdings Corp.* 7,200 $ 92,700
    1,196,820
Textiles — 0.2%
Albany International Corp., Class A 932 68,427
UniFirst Corp. 468 99,071
    167,498
Toys, Games & Hobbies — 0.0%
Funko, Inc., Class A* 600 6,228
Transportation — 1.3%
Air Transport Services Group, Inc.* 1,885 59,076
ArcBest Corp. 795 33,923
Ardmore Shipping Corp. 800 2,616
Atlas Air Worldwide Holdings, Inc.* 848 46,250
Bristow Group, Inc.* 266 7,001
Costamare, Inc. 1,400 11,592
Covenant Logistics Group, Inc., Class A* 400 5,924
CryoPort, Inc.* 1,100 48,268
Daseke, Inc.* 1,800 10,458
DHT Holdings, Inc. 3,700 19,351
Diamond S Shipping, Inc.* 900 5,994
Dorian LPG Ltd.* 1,032 12,580
Eagle Bulk Shipping, Inc.* 214 4,066
Echo Global Logistics, Inc.* 800 21,456
Forward Air Corp. 896 68,849
Frontline Ltd. 4,100 25,502
Genco Shipping & Trading Ltd. 700 5,152
Golar LNG Ltd.* 2,800 26,992
Heartland Express, Inc. 1,567 28,363
Hub Group, Inc., Class A* 1,043 59,451
International Seaways, Inc. 933 15,236
Marten Transport Ltd. 2,026 34,908
Matson, Inc. 1,300 74,061
Nordic American Tankers Ltd. 4,767 14,063
Overseas Shipholding Group, Inc., Class A* 1,600 3,424
PAM Transportation Services, Inc.* 50 2,450
Radiant Logistics, Inc.* 1,000 5,800
Safe Bulkers, Inc.* 2,600 3,380
Saia, Inc.* 761 137,589
Scorpio Bulkers, Inc. 150 2,539
Scorpio Tankers, Inc. 1,840 20,589
SEACOR Holdings, Inc.* 600 24,870
SFL Corp., Ltd. 3,284 20,623
Tidewater, Inc.* 1,400 12,096
Universal Logistics Holdings, Inc. 300 6,177
US Xpress Enterprises, Inc., Class A* 400 2,736
Werner Enterprises, Inc. 1,852 72,635
    956,040
Trucking and Leasing — 0.2%
GATX Corp. 1,100 91,498
General Finance Corp.* 400 3,404
The Greenbrier Cos., Inc. 1,047 38,090
  Number of
Shares
Value†
 
Trucking and Leasing — (continued)
Willis Lease Finance Corp.* 100 $ 3,046
    136,038
Water — 0.4%
American States Water Co. 1,143 90,880
Artesian Resources Corp., Class A 313 11,606
California Water Service Group 1,566 84,611
Consolidated Water Co., Ltd. 500 6,025
Global Water Resources, Inc. 500 7,205
Middlesex Water Co. 531 38,482
PICO Holdings, Inc.* 792 7,405
SJW Group 793 55,002
The York Water Co. 397 18,500
    319,716
TOTAL COMMON STOCKS
(Cost $51,873,586)
72,226,232
REAL ESTATE INVESTMENT TRUSTS — 6.8%
Apartments — 0.2%
Bluerock Residential Growth REIT, Inc. 600 7,602
BRT Apartments Corp. 200 3,040
Centerspace 361 25,501
Front Yard Residential Corp. 1,600 25,920
Independence Realty Trust, Inc. 2,892 38,840
NexPoint Residential Trust, Inc. 700 29,617
Preferred Apartment Communities, Inc., Class A 1,400 10,360
    140,880
Building & Real Estate — 0.6%
Agree Realty Corp. 1,696 112,920
Anworth Mortgage Asset Corp. 3,731 10,111
Apollo Commercial Real Estate Finance, Inc. 4,256 47,540
Ares Commercial Real Estate Corp. 1,000 11,910
Capstead Mortgage Corp. 2,775 16,123
Ellington Residential Mortgage REIT 400 5,216
Getty Realty Corp. 1,169 32,194
Invesco Mortgage Capital, Inc. 5,825 19,688
MFA Financial, Inc. 13,800 53,682
New York Mortgage Trust, Inc. 12,700 46,863
PennyMac Mortgage Investment Trust 2,992 52,629
Ready Capital Corp. 1,153 14,355
Two Harbors Investment Corp. 8,400 53,508
    476,739
Diversified — 1.3%
Alexander & Baldwin, Inc. 2,256 38,758
American Finance Trust, Inc. 3,400 25,262
Armada Hoffler Properties, Inc. 1,700 19,074
Blackstone Mortgage Trust, Inc., Class A 4,300 118,379
Broadstone Net Lease, Inc., Class A 1,100 21,538
CatchMark Timber Trust, Inc., Class A 1,400 13,104
Clipper Realty, Inc. 600 4,230
 
147


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
REAL ESTATE INVESTMENT TRUSTS — (continued)
Diversified — (continued)
Colony Capital, Inc. 14,800 $ 71,188
Colony Credit Real Estate, Inc. 2,500 18,750
CoreCivic, Inc. 3,400 22,270
CorEnergy Infrastructure Trust, Inc. 400 2,740
CorePoint Lodging, Inc. 1,550 10,664
Four Corners Property Trust, Inc. 2,200 65,494
Gladstone Commercial Corp. 1,052 18,936
Gladstone Land Corp. 700 10,248
Global Net Lease, Inc. 2,733 46,844
iStar, Inc. 2,118 31,452
Lexington Realty Trust 8,515 90,429
One Liberty Properties, Inc. 510 10,236
PotlatchDeltic Corp. 2,037 101,891
PS Business Parks, Inc. 622 82,645
The GEO Group, Inc. 3,752 33,243
UMH Properties, Inc. 1,068 15,817
Uniti Group, Inc. 5,900 69,207
Washington Real Estate Investment Trust 2,506 54,205
    996,604
Diversified Financial Services — 0.7%
Arbor Realty Trust, Inc. 3,200 45,376
Arlington Asset Investment Corp., Class A* 900 3,402
ARMOUR Residential REIT, Inc. 2,275 24,547
Broadmark Realty Capital, Inc. 3,900 39,780
Cherry Hill Mortgage Investment Corp. 509 4,652
Chimera Investment Corp. 5,900 60,475
Dynex Capital, Inc. 769 13,688
Ellington Financial, Inc. 1,500 22,260
Granite Point Mortgage Trust, Inc. 1,700 16,983
Great Ajax Corp. 622 6,506
Hannon Armstrong Sustainable Infrastructure Capital, Inc. 2,300 145,889
KKR Real Estate Finance Trust, Inc. 900 16,128
Ladder Capital Corp. 3,376 33,018
Orchid Island Capital, Inc. 1,700 8,874
Redwood Trust, Inc. 3,577 31,406
TPG RE Finance Trust, Inc. 1,700 18,054
Western Asset Mortgage Capital Corp. 1,597 5,206
    496,244
Healthcare — 0.9%
CareTrust REIT, Inc. 2,895 64,211
Community Healthcare Trust, Inc. 700 32,977
Diversified Healthcare Trust 7,800 32,136
Global Medical REIT, Inc. 1,300 16,978
Healthcare Realty Trust, Inc. 4,172 123,491
LTC Properties, Inc. 1,117 43,463
National Health Investors, Inc. 1,357 93,864
New Senior Investment Group, Inc. 2,700 13,986
Physicians Realty Trust 6,500 115,700
Sabra Health Care REIT, Inc. 6,393 111,046
Universal Health Realty Income Trust 420 26,993
    674,845
  Number of
Shares
Value†
 
Hotels & Resorts — 0.7%
Chatham Lodging Trust 1,500 $ 16,200
DiamondRock Hospitality Co. 6,423 52,990
Hersha Hospitality Trust 1,117 8,813
Pebblebrook Hotel Trust 3,993 75,068
RLJ Lodging Trust 5,080 71,882
Ryman Hospitality Properties, Inc. 1,612 109,229
Service Properties Trust 5,000 57,450
Summit Hotel Properties, Inc. 3,400 30,634
Sunstone Hotel Investors, Inc. 6,647 75,311
Xenia Hotels & Resorts, Inc. 3,400 51,680
    549,257
Industrial — 0.7%
EastGroup Properties, Inc. 1,211 167,190
Monmouth Real Estate Investment Corp. 3,049 52,809
QTS Realty Trust, Inc., Class A 1,943 120,233
STAG lndustrial, Inc. 4,700 147,204
    487,436
Office Property — 0.4%
Alpine Income Property Trust, Inc. 300 4,497
American Assets Trust, Inc. 1,600 46,208
CIM Commercial Trust Corp. 500 7,120
City Office REIT, Inc. 1,400 13,678
Columbia Property Trust, Inc. 3,500 50,190
Easterly Government Properties, Inc. 2,600 58,890
Franklin Street Properties Corp. 3,145 13,743
Mack-Cali Realty Corp. 2,500 31,150
Office Properties Income Trust 1,569 35,648
Piedmont Office Realty Trust, Inc., Class A 3,900 63,297
    324,421
Real Estate — 0.2%
Essential Properties Realty Trust, Inc. 3,300 69,960
Farmland Partners, Inc. 900 7,830
NETSTREIT Corp. 500 9,745
Safehold, Inc. 500 36,245
    123,780
Regional Malls — 0.1%
Tanger Factory Outlet Centers, Inc. 3,100 30,876
The Macerich Co. 4,900 52,283
    83,159
Storage & Warehousing — 0.5%
Industrial Logistics Properties Trust 2,158 50,260
Innovative Industrial Properties, Inc. 665 121,782
National Storage Affiliates Trust 1,900 68,457
Plymouth Industrial REIT, Inc. 600 9,000
Terreno Realty Corp. 2,075 121,408
    370,907
Strip Centers — 0.5%
Acadia Realty Trust 2,520 35,759
Alexander's, Inc. 69 19,137
 
148


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
  Number of
Shares
Value†
REAL ESTATE INVESTMENT TRUSTS — (continued)
Strip Centers — (continued)
CTO Realty Growth, Inc. 153 $ 6,450
Kite Realty Group Trust 2,751 41,155
Retail Opportunity Investments Corp. 3,800 50,882
Retail Properties of America, Inc., Class A 6,900 59,064
Retail Value, Inc. 519 7,717
RPT Realty 2,641 22,845
Saul Centers, Inc. 351 11,120
Seritage Growth Properties, Class A* 1,100 16,148
SITE Centers Corp. 4,900 49,588
Urban Edge Properties 3,700 47,878
Urstadt Biddle Properties, Inc., Class A 916 12,943
Whitestone REIT 1,400 11,158
    391,844
TOTAL REAL ESTATE INVESTMENT TRUSTS
(Cost $5,247,274)
  5,116,116
RIGHTS — 0.0%
Aduro Biotech CVR* 560 73
Chelsea Therapeutics International Ltd. CVR* 1,600 0
Cubist Pharmaceuticals, Inc.* 1,200 0
Durata Therapeutics CVR Shares* 500 0
Media General CVR* 4,400 440
Newstar Financial, Inc. CVR* 1,300 111
Progenic Pharmaceuticals CVR* 2,601 111
Tobira Therapeutic, Inc. CVR* 400 5,668
TOTAL RIGHTS
(Cost $263)
  6,403
WARRANTS — 0.0%
Whiting Petroleum Corp., Class A Expiration Date 12/31/25* 204 357
Whiting Petroleum Corp., Class B Expiration Date 12/31/25* 102 194
Pulse Biosciences, Inc. Expiration Date 05/14/25* 12 202
TOTAL WARRANTS
(Cost $3,666)
  753
     
SHORT-TERM INVESTMENTS — 1.2%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $936,395)
936,395 936,395
TOTAL INVESTMENTS — 103.2%
(Cost $58,061,184)
  $ 78,285,899
Other Assets & Liabilities — (3.2)% (2,433,829)
TOTAL NET ASSETS — 100.0%   $ 75,852,070

See Security Valuation Note.
* Non-income producing security.
(1) The value of this security was determined using significant unobservable inputs and is reported as a Level 3 security in the Valuation Hierarchy table located at the end of the Schedule of Investments.
CVR— Contingent Valued Rights.
N.V.— Naamloze Vennootschap.
PLC— Public Limited Company.
REIT— Real Estate Investment Trust.
S.A.— Societe Anonyme.
COMMON STOCKS
INDUSTRY DIVERSIFICATION
% of Market
Value
Value†
Advertising 0.1% $ 52,492
Aerospace & Defense 0.8% 573,047
Agriculture 0.7% 480,769
Airlines 0.3% 248,631
Apparel 1.0% 739,315
Auto Manufacturers 0.2% 174,680
Auto Parts & Equipment 1.4% 1,039,426
Banks 8.5% 6,101,783
Beverages 0.3% 225,686
Biotechnology 10.7% 7,718,224
Building Materials 1.7% 1,236,445
Chemicals 1.6% 1,166,269
Coal 0.1% 80,159
Commercial Services 4.4% 3,210,234
Computers 2.3% 1,655,970
Cosmetics & Personal Care 0.2% 128,956
Distribution & Wholesale 1.1% 824,452
Diversified Financial Services 2.6% 1,867,391
Electric 1.9% 1,334,011
Electrical Components & Equipment 0.6% 416,036
Electronics 2.2% 1,606,674
Energy-Alternate Sources 1.6% 1,168,318
Engineering & Construction 2.0% 1,406,572
Entertainment 2.4% 1,735,719
Environmental Control 0.7% 475,369
Food 1.4% 1,030,435
Forest Products & Paper 0.3% 179,702
Gas 0.9% 678,809
Hand & Machine Tools 0.3% 218,383
Healthcare Products 4.8% 3,483,458
Healthcare Services 2.1% 1,491,780
Holding Companies 0.0% 5,663
Home Builders 1.3% 959,854
Home Furnishings 0.5% 350,640
Household Products & Wares 0.6% 395,388
Housewares 0.1% 57,904
Insurance 2.7% 1,978,059
Internet 2.3% 1,665,902
Investment Companies 0.2% 168,281
Iron & Steel 0.7% 509,389
Leisure Time 0.7% 496,442
Lodging 0.3% 220,548
Machinery — Construction & Mining 0.3% 244,577
Machinery — Diversified 1.4% 1,035,191
 
149


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
COMMON STOCKS
INDUSTRY DIVERSIFICATION
% of Market
Value
  Value†
Media 0.7%   $ 476,625
Metal Fabricate/Hardware 1.2%   835,399
Mining 1.0%   742,139
Miscellaneous Manufacturing 1.2%   834,391
Office & Business Equipment 0.0%   33,880
Office Furnishings 0.2%   139,805
Oil & Gas 1.2%   885,271
Oil & Gas Services 0.6%   432,539
Packaging and Containers 0.3%   205,948
Pharmaceuticals 3.1%   2,246,286
Real Estate 0.9%   656,103
Retail 5.4%   3,861,983
Savings & Loans 1.1%   773,977
Semiconductors 2.8%   2,037,821
Software 6.2%   4,444,692
Telecommunications 1.7%   1,196,820
Textiles 0.2%   167,498
Toys, Games & Hobbies 0.0%   6,228
Transportation 1.3%   956,040
Trucking and Leasing 0.2%   136,038
Water 0.4%   319,716
  100.0%   $72,226,232
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Advertising $ 52,492 $ 52,492 $ $—
Aerospace & Defense 573,047 573,047
Agriculture 480,769 480,769
Airlines 248,631 248,631
Apparel 739,315 739,315
Auto Manufacturers 174,680 174,680
Auto Parts & Equipment 1,039,426 1,039,426
Banks 6,101,783 6,101,783
Beverages 225,686 225,686
Biotechnology 7,718,224 7,718,224
Building Materials 1,236,445 1,236,445
Chemicals 1,166,269 1,166,269
Coal 80,159 80,159
Commercial Services 3,210,234 3,210,234
Computers 1,655,970 1,655,970
Cosmetics & Personal Care 128,956 128,956
Distribution & Wholesale 824,452 824,452
Diversified Financial Services 1,867,391 1,867,391
Electric 1,334,011 1,334,011
Electrical Components & Equipment 416,036 416,036
Electronics 1,606,674 1,606,674
Energy-Alternate Sources 1,168,318 1,168,318
Engineering & Construction 1,406,572 1,406,572
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Entertainment $ 1,735,719 $ 1,735,719 $ $—
Environmental Control 475,369 475,369
Food 1,030,435 1,030,435
Forest Products & Paper 179,702 179,702
Gas 678,809 678,809
Hand & Machine Tools 218,383 218,383
Healthcare Products 3,483,458 3,483,458
Healthcare Services 1,491,780 1,491,780
Holding Companies 5,663 5,663
Home Builders 959,854 959,854
Home Furnishings 350,640 350,640
Household Products & Wares 395,388 395,388
Housewares 57,904 57,904
Insurance 1,978,059 1,978,059
Internet 1,665,902 1,665,902
Investment Companies 168,281 168,281
Iron & Steel 509,389 509,389
Leisure Time 496,442 496,442
Lodging 220,548 220,548
Machinery — Construction & Mining 244,577 244,577
Machinery — Diversified 1,035,191 1,035,191
Media 476,625 476,625
Metal Fabricate/Hardware 835,399 835,399
Mining 742,139 741,420 719
Miscellaneous Manufacturing 834,391 834,391
Office & Business Equipment 33,880 33,880
Office Furnishings 139,805 139,805
Oil & Gas 885,271 885,271
Oil & Gas Services 432,539 432,539
Packaging and Containers 205,948 205,948
Pharmaceuticals 2,246,286 2,246,286
Real Estate 656,103 656,103
Retail 3,861,983 3,861,983
Savings & Loans 773,977 773,977
Semiconductors 2,037,821 2,037,821
Software 4,444,692 4,444,692
Telecommunications 1,196,820 1,196,820
Textiles 167,498 167,498
Toys, Games & Hobbies 6,228 6,228
Transportation 956,040 956,040
Trucking and Leasing 136,038 136,038
Water 319,716 319,716
Total Common Stocks 72,226,232 72,225,513 719
Real Estate Investment Trusts 5,116,116 5,116,116
Rights 6,403 6,403
Warrants 753 551 202
Short-Term Investments 936,395 936,395
Total Investments $ 78,285,899 $ 78,278,575 $ 7,324 $
 
150


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Small Cap Index Fund
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Other Financial Instruments(1)        
Futures Contracts $ 44,217 $ 44,217 $ $—
Total Assets—Other Financial Instruments $ 44,217 $ 44,217 $ $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
 
Futures contracts held by the Fund at December 31, 2020 are as follows:
Futures Contracts:
Exchange Traded
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Long   Russell 2000 Mini Index   03/19/2021   14   50   $1,975   $1,382,360   $44,217   $—
                            $44,217   $—
The accompanying notes are an integral part of these financial statements.
151


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — 97.8%
Australia — 7.6%
Afterpay Ltd.* 1,413 $ 128,450
AGL Energy Ltd. 4,167 38,463
AMP Ltd. 21,837 26,242
Ampol Ltd. 1,758 38,550
APA Group 8,473 63,043
Aristocrat Leisure Ltd. 3,814 91,578
ASX Ltd. 1,293 71,758
Aurizon Holdings Ltd. 13,765 41,356
AusNet Services 13,214 17,909
Australia & New Zealand Banking Group Ltd. 19,385 340,171
BHP Group Ltd. 19,986 653,034
BHP Group PLC 14,280 377,054
BlueScope Steel Ltd. 3,653 49,333
Brambles Ltd. 10,323 84,672
CIMIC Group Ltd.* 469 8,822
Coca-Cola Amatil Ltd. 3,824 38,103
Cochlear Ltd. 418 60,993
Coles Group Ltd. 9,011 125,896
Commonwealth Bank of Australia 12,020 764,016
Computershare Ltd. 3,381 38,047
Crown Resorts Ltd. 2,801 20,846
CSL Ltd. 3,084 673,831
Dexus 7,928 57,501
Evolution Mining Ltd. 11,549 44,445
Fortescue Metals Group Ltd. 11,494 207,609
Goodman Group 11,429 167,063
Insurance Australia Group Ltd. 15,259 55,376
Lendlease Corp. Ltd. 4,333 43,810
Macquarie Group Ltd. 2,312 246,781
Magellan Financial Group Ltd. 795 32,928
Medibank Pvt. Ltd. 17,418 40,343
Mirvac Group 28,418 57,716
National Australia Bank Ltd. 22,098 385,253
Newcrest Mining Ltd. 5,595 111,664
Northern Star Resources Ltd. 5,279 51,597
Oil Search Ltd. 12,151 34,824
Orica Ltd. 2,861 33,462
Origin Energy Ltd. 12,782 46,927
Qantas Airways Ltd.* 5,515 20,680
QBE Insurance Group Ltd. 9,279 60,484
Ramsay Health Care Ltd. 1,275 61,265
REA Group Ltd. 317 36,312
Rio Tinto Ltd. 2,494 219,326
Rio Tinto PLC 7,587 571,097
Santos Ltd. 11,389 55,154
Scentre Group 34,304 73,685
SEEK Ltd. 2,271 49,791
Sonic Healthcare Ltd. 2,969 73,562
South32 Ltd. 21,214 40,543
South32 Ltd. 13,128 24,822
Stockland 17,063 55,089
Suncorp Group Ltd. 8,248 62,070
Sydney Airport* 8,238 40,777
Tabcorp Holdings Ltd. 15,195 45,748
  Number of
Shares
Value†
 
Australia — (continued)
Telstra Corp. Ltd. 27,472 $ 63,092
The GPT Group 13,907 48,373
The GPT Group-In Specie 16,419 0
TPG Telecom Ltd.* 2,240 12,441
Transurban Group 18,787 197,974
Treasury Wine Estates Ltd. 4,544 32,871
Vicinity Centres 25,092 31,026
Washington H. Soul Pattinson & Co., Ltd. 819 19,051
Wesfarmers Ltd. 7,692 298,966
Westpac Banking Corp. 24,416 363,342
WiseTech Global Ltd. 1,081 25,690
Woodside Petroleum Ltd. 6,468 113,485
Woolworths Group Ltd. 8,688 263,337
    8,329,519
Austria — 0.2%
Erste Group Bank AG* 1,953 59,494
OMV AG 924 36,907
Raiffeisen Bank International AG* 1,156 23,492
Verbund AG 518 44,008
voestalpine AG 888 31,693
    195,594
Belgium — 0.9%
Ageas N.V. 1,215 64,525
Anheuser-Busch InBev N.V. 5,211 363,555
Elia Group SA 220 26,259
Etablissements Franz Colruyt NV 375 22,151
Galapagos N.V.* 294 29,099
Groupe Bruxelles Lambert S.A. 784 79,023
KBC Group N.V.* 1,734 121,347
Proximus SADP 1,133 22,381
Sofina S.A. 110 37,210
Solvay S.A. 514 60,618
UCB S.A. 878 90,695
Umicore S.A. 1,368 65,753
    982,616
Bermuda — 0.0%
Jardine Strategic Holdings Ltd. 1,400 34,800
Denmark — 2.5%
A.P. Moller - Maersk A/S, Class A 20 41,316
A.P. Moller - Maersk A/S, Class B 41 91,235
Ambu A/S, Class B 1,165 50,048
Carlsberg AS, Class B 720 115,425
Chr Hansen Holding A/S* 695 71,809
Coloplast A/S, Class B 798 122,037
Danske Bank A/S* 4,748 78,472
Demant A/S* 713 28,182
DSV PANALPINA A/S 1,392 233,942
Genmab A/S* 443 179,634
GN Store Nord A/S 913 72,779
H. Lundbeck A/S 500 17,117
Novo Nordisk A/S, Class B 11,697 815,973
Novozymes A/S, Class B 1,455 82,877
 
152


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Denmark — (continued)
Orsted A/S 1,299 $ 265,782
Pandora A/S 618 69,165
ROCKWOOL International A/S, Class B 55 20,584
Tryg A/S 965 30,350
Vestas Wind Systems A/S 1,343 317,256
    2,703,983
Finland — 1.2%
Elisa OYJ 1,000 54,819
Fortum OYJ 3,199 77,288
Kesko OYJ 1,878 48,202
Kone OYJ, Class B 2,327 189,604
Neste OYJ 2,880 209,099
Nokia OYJ* 38,600 149,086
Nordea Bank Abp* 21,882 179,332
Nordea Bank Abp* 345 2,818
Orion OYJ, Class B 750 34,451
Sampo OYJ, Class A 3,258 139,291
Stora Enso OYJ, Class R 3,880 74,293
UPM-Kymmene OYJ 3,732 139,173
Wartsila OYJ Abp 3,006 30,085
    1,327,541
France — 10.2%
Accor S.A.* 1,184 42,956
Aeroports de Paris* 215 27,816
Air Liquide S.A. 3,212 526,597
Alstom S.A.* 1,647 93,812
Amundi S.A.* 376 30,645
Arkema S.A. 503 57,554
Atos S.E.* 644 58,807
AXA S.A. 13,058 313,161
BioMerieux 262 36,875
BNP Paribas S.A.* 7,610 401,748
Bollore S.A. 5,730 23,723
Bouygues S.A. 1,607 66,093
Bureau Veritas S.A.* 2,023 54,003
Capgemini S.E. 1,075 167,219
Carrefour S.A. 4,369 74,817
Cie de Saint-Gobain* 3,550 163,273
Cie Generale des Etablissements Michelin SCA 1,153 148,457
CNP Assurances* 1,195 19,415
Covivio 344 31,566
Credit Agricole S.A.* 7,617 96,294
Danone S.A. 4,192 275,859
Dassault Aviation S.A.* 18 19,601
Dassault Systemes S.E. 899 182,335
Edenred 1,624 92,229
Eiffage S.A.* 567 54,807
Electricite de France S.A.* 4,450 70,418
Engie S.A.* 12,498 191,594
EssilorLuxottica S.A. 1,930 300,760
Eurazeo S.E.* 255 17,327
Faurecia S.E.* 580 29,717
Gecina S.A. 294 45,717
  Number of
Shares
Value†
 
France — (continued)
Getlink S.E.* 3,111 $ 53,824
Hermes International 217 233,335
Iliad S.A. 84 17,242
Ipsen S.A. 293 24,228
Kering S.A. 512 371,576
Klepierre S.A. 1,415 31,914
La Francaise des Jeux SAEM 613 28,097
Legrand S.A. 1,819 162,722
L'Oreal S.A. 1,707 651,310
LVMH Moet Hennessy Louis Vuitton S.E. 1,888 1,181,891
Natixis S.A.* 7,282 24,952
Orange S.A. 13,664 162,670
Orpea S.A.* 369 48,388
Pernod Ricard S.A. 1,412 271,170
Peugeot S.A.* 4,146 113,541
Publicis Groupe S.A. 1,414 70,278
Remy Cointreau S.A. 160 29,865
Renault S.A.* 1,361 59,574
Safran S.A.* 2,174 308,129
Sanofi 7,692 745,532
Sartorius Stedim Biotech 179 63,809
Schneider Electric S.E. 3,650 527,525
SCOR S.E.* 1,198 38,859
SEB S.A. 134 24,366
Societe Generale S.A.* 5,457 113,443
Sodexo S.A. 643 54,381
Suez S.A. 2,325 46,080
Teleperformance 391 129,805
Thales S.A. 767 70,175
TOTAL S.E. 17,100 738,074
Ubisoft Entertainment S.A.* 622 59,941
Unibail-Rodamco-Westfield 772 60,127
Unibail-Rodamco-Westfield 4,540 17,731
Valeo S.A. 1,663 65,596
Veolia Environnement S.A. 3,618 89,210
Vinci S.A. 3,574 356,004
Vivendi S.A. 5,638 181,851
Wendel S.E. 185 22,078
Worldline S.A.* 1,591 154,563
    11,119,051
Germany — 8.5%
adidas AG* 1,289 468,945
Allianz S.E. 2,831 695,500
BASF S.E. 6,222 491,804
Bayer AG 6,645 391,465
Bayerische Motoren Werke AG 2,262 199,636
Bechtle AG 188 41,283
Beiersdorf AG 673 77,368
Brenntag AG 1,011 78,617
Carl Zeiss Meditec AG 302 40,051
Commerzbank AG* 6,847 44,249
Continental AG 734 109,245
Covestro AG 1,214 74,799
 
153


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Germany — (continued)
Daimler AG 5,791 $ 410,462
Delivery Hero S.E.* 864 135,120
Deutsche Bank AG* 13,366 147,012
Deutsche Boerse AG 1,309 222,886
Deutsche Lufthansa AG* 1,773 23,460
Deutsche Post AG 6,822 337,933
Deutsche Telekom AG 22,551 411,614
Deutsche Wohnen S.E. 2,313 123,410
E.ON S.E. 15,396 170,484
Evonik Industries AG 1,328 43,405
Fresenius Medical Care AG & Co., KGaA 1,449 120,828
Fresenius S.E. & Co., KGaA 2,852 131,882
GEA Group AG 1,137 40,667
Hannover Rueck S.E. 392 62,468
HeidelbergCement AG 971 72,296
HelloFresh S.E.* 1,016 78,590
Henkel AG & Co., KGaA 685 66,007
HOCHTIEF AG 160 15,570
Infineon Technologies AG 8,978 342,857
KION Group AG 503 43,621
Knorr-Bremse AG 499 68,165
LANXESS AG 589 44,794
LEG Immobilien AG 507 78,658
Merck KGaA 862 147,845
MTU Aero Engines AG 373 97,230
Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen 961 285,538
Nemetschek S.E. 412 30,619
Puma S.E.* 591 66,503
Rational AG 35 32,528
RWE AG 4,302 182,006
SAP S.E. 7,095 918,936
Scout24 AG 768 62,756
Siemens AG 5,193 748,033
Siemens Energy AG* 2,663 97,598
Siemens Healthineers AG 1,879 96,696
Symrise AG 868 115,395
TeamViewer AG* 927 49,796
Telefonica Deutschland Holding AG 5,808 15,997
Uniper S.E. 1,294 44,837
United Internet AG 668 28,120
Volkswagen AG 205 42,743
Vonovia S.E. 3,573 260,951
Zalando S.E.* 1,012 112,566
    9,341,844
Hong Kong — 3.0%
AIA Group Ltd. 82,200 1,001,699
ASM Pacific Technology Ltd. 2,000 26,413
BOC Hong Kong Holdings Ltd. 26,000 78,812
Budweiser Brewing Co., APAC, Ltd. 11,100 36,667
CK Asset Holdings Ltd. 17,670 90,416
CK Hutchison Holdings Ltd. 18,128 126,567
CK Infrastructure Holdings Ltd. 5,000 26,852
  Number of
Shares
Value†
 
Hong Kong — (continued)
CLP Holdings Ltd. 11,000 $ 101,713
ESR Cayman Ltd.* 11,600 41,640
Galaxy Entertainment Group Ltd. 15,000 116,768
Hang Lung Properties Ltd. 14,000 36,894
Hang Seng Bank Ltd. 5,100 88,016
Henderson Land Development Co., Ltd. 10,891 42,308
HK Electric Investments & HK Electric Investments Ltd. 20,777 20,449
HKT Trust & HKT Ltd. 25,240 32,734
Hong Kong & China Gas Co., Ltd. 72,488 108,450
Hong Kong Exchanges & Clearing Ltd. 8,184 448,907
Hongkong Land Holdings Ltd. 7,400 30,563
Link REIT 14,273 129,624
Melco Resorts & Entertainment Ltd., ADR 1,367 25,358
MTR Corp., Ltd. 10,671 59,679
New World Development Co., Ltd. 10,458 48,655
PCCW Ltd. 29,957 18,040
Power Assets Holdings Ltd. 9,500 51,449
Sino Land Co., Ltd. 24,095 31,355
SJM Holdings Ltd. 11,000 12,333
Sun Hung Kai Properties Ltd. 9,161 117,160
Swire Pacific Ltd., Class A 3,500 19,279
Swire Properties Ltd. 7,136 20,747
Techtronic Industries Co., Ltd. 9,500 135,788
The Bank of East Asia Ltd. 8,875 18,986
WH Group Ltd. 69,823 58,550
Wharf Real Estate Investment Co., Ltd. 12,000 62,365
Xinyi Glass Holdings Ltd. 12,000 33,564
    3,298,800
Ireland — 1.0%
CRH PLC 5,274 224,285
DCC PLC 709 50,170
Experian PLC 6,257 237,695
Flutter Entertainment PLC* 1,078 219,195
James Hardie Industries PLC* 2,913 86,333
Kerry Group PLC, Class A 1,079 156,718
Kingspan Group PLC* 1,079 75,559
Smurfit Kappa Group PLC 1,508 70,489
    1,120,444
Isle Of Man — 0.1%
Entain PLC* 4,148 64,339
Israel — 0.6%
Azrieli Group Ltd. 283 17,987
Bank Hapoalim BM* 8,292 56,951
Bank Leumi Le-Israel BM 10,394 61,353
Check Point Software Technologies Ltd.* 712 94,632
CyberArk Software Ltd.* 200 32,318
Elbit Systems Ltd. 186 24,519
ICL Group Ltd. 4,391 22,415
Israel Discount Bank Ltd., Class A 8,729 33,703
 
154


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Israel — (continued)
Mizrahi Tefahot Bank Ltd. 962 $ 22,316
Nice Ltd.* 415 117,411
Teva Pharmaceutical Industries Ltd.* 7,232 69,869
Teva Pharmaceutical Industries Ltd., ADR* 500 4,825
Wix.com Ltd.* 400 99,984
    658,283
Italy — 2.1%
Amplifon SpA* 856 35,581
Assicurazioni Generali SpA 7,657 134,062
Atlantia SpA* 3,439 62,101
Davide Campari-Milano N.V. 4,055 46,480
DiaSorin SpA 180 37,582
Enel SpA 55,727 567,007
Eni SpA 17,657 184,334
Ferrari N.V. 869 201,557
FinecoBank Banca Fineco SpA* 4,262 70,289
Infrastrutture Wireless Italiane SpA 1,712 20,754
Intesa Sanpaolo SpA* 111,404 263,328
Mediobanca Banca di Credito Finanziario SpA* 4,539 42,017
Moncler SpA* 1,369 84,167
Nexi SpA* 2,687 53,469
Poste Italiane SpA 3,626 37,089
Prysmian SpA 1,675 59,618
Recordati Industria Chimica e Farmaceutica SpA 726 40,372
Snam SpA 14,360 81,099
Telecom Italia SpA 60,149 27,918
Telecom Italia SpA, RSP 40,890 21,306
Terna Rete Elettrica Nazionale SpA 9,766 75,044
UniCredit SpA* 14,564 136,456
    2,281,630
Japan — 24.9%
ABC-Mart, Inc. 200 11,120
Acom Co., Ltd. 3,200 13,663
Advantest Corp. 1,300 97,372
Aeon Co., Ltd. 4,600 150,909
Aeon Mall Co., Ltd. 710 11,726
AGC, Inc. 1,400 48,957
Air Water, Inc. 1,000 17,793
Aisin Seiki Co., Ltd. 1,200 35,987
Ajinomoto Co., Inc. 3,000 67,979
Alfresa Holdings Corp. 1,300 23,828
Amada Co., Ltd. 2,400 26,410
ANA Holdings, Inc.* 800 17,677
Asahi Group Holdings Ltd. 3,100 127,665
Asahi Intecc Co., Ltd. 1,400 51,135
Asahi Kasei Corp. 8,800 90,201
Astellas Pharma, Inc. 12,800 198,192
Azbil Corp. 800 43,762
Bandai Namco Holdings, Inc. 1,300 112,581
Bridgestone Corp. 3,600 118,065
Brother Industries Ltd. 1,500 30,965
  Number of
Shares
Value†
 
Japan — (continued)
Calbee, Inc. 600 $ 18,087
Canon, Inc. 6,700 129,796
Capcom Co., Ltd. 600 38,912
Casio Computer Co., Ltd. 1,500 27,451
Central Japan Railway Co. 1,000 141,403
Chubu Electric Power Co., Inc. 4,700 56,720
Chugai Pharmaceutical Co., Ltd. 4,500 240,098
Coca-Cola Bottlers Japan Holdings, Inc. 1,000 15,620
Concordia Financial Group Ltd. 7,200 25,399
Cosmos Pharmaceutical Corp. 100 16,148
CyberAgent, Inc. 600 41,391
Dai Nippon Printing Co., Ltd. 1,700 30,579
Daifuku Co., Ltd. 700 86,622
Dai-ichi Life Holdings, Inc. 7,100 106,964
Daiichi Sankyo Co., Ltd. 11,700 400,961
Daikin Industries Ltd. 1,700 378,194
Daito Trust Construction Co., Ltd. 400 37,382
Daiwa House Industry Co., Ltd. 3,800 112,984
Daiwa House REIT Investment Corp. 13 32,160
Daiwa Securities Group, Inc. 9,300 42,360
Denso Corp. 2,900 172,610
Dentsu Group, Inc. 1,500 44,643
Disco Corp. 200 67,407
East Japan Railway Co. 2,100 140,102
Eisai Co., Ltd. 1,700 121,572
ENEOS Holdings, Inc. 20,490 73,594
FANUC Corp. 1,300 320,904
Fast Retailing Co., Ltd. 400 358,672
Fuji Electric Co., Ltd. 900 32,486
FUJIFILM Holdings Corp. 2,400 126,605
Fujitsu Ltd. 1,300 187,896
Fukuoka Financial Group, Inc. 1,200 21,390
GLP J-Reit 26 41,028
GMO Payment Gateway, Inc. 300 40,315
Hakuhodo DY Holdings, Inc. 1,500 20,611
Hamamatsu Photonics K.K. 1,000 57,214
Hankyu Hanshin Holdings, Inc. 1,600 53,219
Harmonic Drive Systems, Inc. 300 26,846
Hikari Tsushin, Inc. 100 23,463
Hino Motors Ltd. 2,000 17,074
Hirose Electric Co., Ltd. 220 33,390
Hisamitsu Pharmaceutical Co., Inc. 400 23,776
Hitachi Construction Machinery Co., Ltd. 700 19,903
Hitachi Ltd. 6,700 264,444
Hitachi Metals Ltd. 1,400 21,286
Honda Motor Co., Ltd. 11,000 310,379
Hoshizaki Corp. 300 27,547
Hoya Corp. 2,500 346,237
Hulic Co., Ltd. 2,000 22,000
Ibiden Co., Ltd. 700 32,723
Idemitsu Kosan Co., Ltd. 1,356 29,855
Iida Group Holdings Co., Ltd. 1,000 20,218
Inpex Corp. 7,400 39,903
 
155


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Japan — (continued)
Isuzu Motors Ltd. 4,000 $ 38,079
Ito En Ltd. 400 25,329
ITOCHU Corp. 9,200 264,593
Itochu Techno-Solutions Corp. 700 24,996
Japan Airlines Co., Ltd.* 800 15,427
Japan Airport Terminal Co., Ltd. 300 18,206
Japan Exchange Group, Inc. 3,600 91,987
Japan Post Bank Co., Ltd. 3,000 24,659
Japan Post Holdings Co., Ltd. 10,500 81,786
Japan Post Insurance Co., Ltd. 1,700 34,857
Japan Real Estate Investment Corp. 9 52,005
Japan Retail Fund Investment Corp. 20 36,399
Japan Tobacco, Inc. 8,200 167,175
JFE Holdings, Inc.* 3,000 28,804
JSR Corp. 1,500 41,824
Kajima Corp. 2,800 37,562
Kakaku.com, Inc. 900 24,636
Kansai Paint Co., Ltd. 1,100 33,908
Kao Corp. 3,300 254,946
KDDI Corp. 11,100 329,118
Keihan Holdings Co., Ltd. 700 33,560
Keikyu Corp. 1,600 27,449
Keio Corp. 700 54,310
Keisei Electric Railway Co., Ltd. 1,000 33,850
Keyence Corp. 1,264 711,022
Kikkoman Corp. 1,000 69,597
Kintetsu Group Holdings Co., Ltd. 1,100 48,208
Kirin Holdings Co., Ltd. 5,600 132,233
Kobayashi Pharmaceutical Co., Ltd. 300 36,668
Kobe Bussan Co., Ltd. 800 24,580
Koei Tecmo Holdings Co., Ltd. 300 18,315
Koito Manufacturing Co., Ltd. 700 47,639
Komatsu Ltd. 5,800 160,070
Konami Holdings Corp. 700 39,386
Kose Corp. 200 34,176
Kubota Corp. 6,900 150,749
Kuraray Co., Ltd. 1,900 20,230
Kurita Water Industries Ltd. 600 22,935
Kyocera Corp. 2,200 135,033
Kyowa Kirin Co., Ltd. 1,700 46,424
Kyushu Electric Power Co., Inc. 2,900 25,018
Kyushu Railway Co. 900 19,416
Lasertec Corp. 500 58,687
Lawson, Inc. 400 18,614
Lion Corp. 1,500 36,337
Lixil Corp. 1,700 36,867
M3, Inc. 3,000 283,402
Makita Corp. 1,600 80,251
Marubeni Corp. 11,700 77,950
Marui Group Co., Ltd. 1,500 26,415
Mazda Motor Corp. 3,400 22,759
McDonald's Holdings Co., Japan Ltd. 400 19,385
Medipal Holdings Corp. 1,300 24,447
MEIJI Holdings Co., Ltd. 800 56,304
Mercari, Inc.* 600 26,597
  Number of
Shares
Value†
 
Japan — (continued)
MINEBEA MITSUMI, Inc. 2,600 $ 51,726
MISUMI Group, Inc. 1,900 62,372
Mitsubishi Chemical Holdings Corp. 8,200 49,678
Mitsubishi Corp. 9,000 221,867
Mitsubishi Electric Corp. 12,400 187,409
Mitsubishi Estate Co., Ltd. 8,000 128,583
Mitsubishi Gas Chemical Co., Inc. 1,100 25,295
Mitsubishi Heavy Industries Ltd. 2,100 64,315
Mitsubishi UFJ Financial Group, Inc. 82,600 365,721
Mitsubishi UFJ Lease & Finance Co., Ltd. 2,500 12,005
Mitsui & Co., Ltd. 11,000 201,677
Mitsui Chemicals, Inc. 1,400 41,125
Mitsui Fudosan Co., Ltd. 6,400 134,013
Miura Co., Ltd. 600 33,497
Mizuho Financial Group, Inc. 16,608 210,792
MonotaRO Co., Ltd. 800 40,631
MS&AD Insurance Group Holdings, Inc. 2,890 87,928
Murata Manufacturing Co., Ltd. 3,900 353,065
Nabtesco Corp. 700 30,725
Nagoya Railroad Co., Ltd. 1,400 36,940
NEC Corp. 1,800 96,677
Nexon Co., Ltd. 3,200 98,736
NGK Insulators Ltd. 2,000 30,903
NGK Spark Plug Co., Ltd. 1,100 18,785
NH Foods Ltd. 600 26,427
Nidec Corp. 3,000 379,524
Nihon M&A Center, Inc. 1,000 66,873
Nintendo Co., Ltd. 800 513,553
Nippon Building Fund, Inc. 10 57,997
Nippon Express Co., Ltd. 400 26,907
Nippon Paint Holdings Co., Ltd. 1,000 109,882
Nippon Prologis REIT, Inc. 15 46,861
Nippon Sanso Holdings Corp. 1,000 18,602
Nippon Shinyaku Co., Ltd. 300 19,692
Nippon Steel Corp.* 5,317 68,574
Nippon Telegraph & Telephone Corp. 8,900 228,365
Nippon Yusen K.K. 900 20,998
Nissan Chemical Corp. 800 50,164
Nissan Motor Co., Ltd.* 15,600 84,558
Nisshin Seifun Group, Inc. 1,315 20,948
Nissin Foods Holdings Co., Ltd. 400 34,286
Nitori Holdings Co., Ltd. 500 104,551
Nitto Denko Corp. 1,000 89,580
Nomura Holdings, Inc. 20,800 109,971
Nomura Real Estate Holdings, Inc. 600 13,304
Nomura Real Estate Master Fund, Inc. 28 40,069
Nomura Research Institute Ltd. 2,130 76,198
NSK Ltd. 2,100 18,275
NTT Data Corp. 4,500 61,597
Obayashi Corp. 4,200 36,265
Obic Co., Ltd. 500 100,489
Odakyu Electric Railway Co., Ltd. 2,100 65,957
Oji Holdings Corp. 6,000 34,159
 
156


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Japan — (continued)
Olympus Corp. 7,900 $ 172,962
Omron Corp. 1,300 116,053
Ono Pharmaceutical Co., Ltd. 2,500 75,337
Oracle Corp. Japan 300 39,106
Oriental Land Co., Ltd. 1,300 214,801
ORIX Corp. 8,900 136,919
Orix JREIT, Inc. 20 33,087
Osaka Gas Co., Ltd. 2,400 49,194
Otsuka Corp. 600 31,648
Otsuka Holdings Co., Ltd. 2,700 115,685
Pan Pacific International Holdings Corp. 2,700 62,380
Panasonic Corp. 15,000 174,859
PeptiDream, Inc.* 700 35,607
Persol Holdings Co., Ltd. 1,400 25,293
Pigeon Corp. 700 28,891
Pola Orbis Holdings, Inc. 800 16,245
Rakuten, Inc.* 6,300 60,624
Recruit Holdings Co., Ltd. 8,800 369,626
Renesas Electronics Corp.* 5,400 56,522
Resona Holdings, Inc. 14,800 51,811
Ricoh Co., Ltd. 5,000 32,879
Rinnai Corp. 200 23,248
Rohm Co., Ltd. 600 58,165
Ryohin Keikaku Co., Ltd. 1,700 34,790
Santen Pharmaceutical Co., Ltd. 2,600 42,227
SBI Holdings, Inc. 1,710 40,680
SCSK Corp. 400 22,874
Secom Co., Ltd. 1,400 129,152
Sega Sammy Holdings, Inc. 1,200 18,943
Seibu Holdings, Inc. 1,600 15,695
Seiko Epson Corp. 1,700 25,262
Sekisui Chemical Co., Ltd. 2,600 49,299
Sekisui House Ltd. 4,200 85,562
Seven & i Holdings Co., Ltd. 5,200 184,135
SG Holdings Co., Ltd. 2,200 59,986
Sharp Corp. 1,200 18,233
Shimadzu Corp. 1,600 62,192
Shimamura Co., Ltd. 100 10,508
Shimano, Inc. 500 117,039
Shimizu Corp. 4,000 29,117
Shin-Etsu Chemical Co., Ltd. 2,400 421,238
Shinsei Bank Ltd. 800 9,883
Shionogi & Co., Ltd. 1,800 98,409
Shiseido Co., Ltd. 2,700 186,906
SMC Corp. 400 244,295
SoftBank Corp. 19,300 242,254
SoftBank Group Corp. 10,600 822,932
Sohgo Security Services Co., Ltd. 500 25,938
Sompo Holdings, Inc. 2,325 94,262
Sony Corp. 8,600 866,606
Square Enix Holdings Co., Ltd. 600 36,378
Stanley Electric Co., Ltd. 1,000 32,259
Subaru Corp. 4,000 80,036
SUMCO Corp. 1,800 39,525
  Number of
Shares
Value†
 
Japan — (continued)
Sumitomo Chemical Co., Ltd. 10,600 $ 42,726
Sumitomo Corp. 8,000 106,024
Sumitomo Dainippon Pharma Co., Ltd. 1,100 16,257
Sumitomo Electric Industries Ltd. 4,900 64,929
Sumitomo Metal Mining Co., Ltd. 1,500 66,722
Sumitomo Mitsui Financial Group, Inc. 9,000 278,983
Sumitomo Mitsui Trust Holdings, Inc. 2,343 72,293
Sumitomo Realty & Development Co., Ltd. 2,000 61,746
Sundrug Co., Ltd. 400 15,987
Suntory Beverage & Food Ltd. 1,000 35,419
Suzuken Co., Ltd. 540 19,534
Suzuki Motor Corp. 2,500 115,889
Sysmex Corp. 1,100 132,359
T&D Holdings, Inc. 3,700 43,767
Taiheiyo Cement Corp. 800 20,039
Taisei Corp. 1,400 48,298
Taisho Pharmaceutical Holdings Co., Ltd. 200 13,486
Takeda Pharmaceutical Co., Ltd. 10,695 387,045
TDK Corp. 900 135,795
Teijin Ltd. 1,200 22,582
Terumo Corp. 4,500 188,308
The Bank of Kyoto Ltd. 400 20,855
The Chiba Bank Ltd. 3,700 20,418
The Chugoku Electric Power Co., Inc. 2,100 24,645
The Kansai Electric Power Co., Inc. 4,900 46,345
The Shizuoka Bank Ltd. 3,200 23,489
THK Co., Ltd. 700 22,639
TIS, Inc. 1,600 32,799
Tobu Railway Co., Ltd. 1,400 41,743
Toho Co., Ltd. 700 29,525
Toho Gas Co., Ltd. 400 26,500
Tohoku Electric Power Co., Inc. 2,800 23,109
Tokio Marine Holdings, Inc. 4,200 216,391
Tokyo Century Corp. 300 23,808
Tokyo Electric Power Co. Holdings, Inc.* 10,800 28,527
Tokyo Electron Ltd. 1,000 373,563
Tokyo Gas Co., Ltd. 2,700 62,492
Tokyu Corp. 3,600 44,730
Tokyu Fudosan Holdings Corp. 4,000 21,366
Toppan Printing Co., Ltd. 2,000 28,243
Toray Industries, Inc. 10,000 59,314
Toshiba Corp. 2,700 75,623
Tosoh Corp. 1,800 28,124
TOTO Ltd. 1,000 60,189
Toyo Suisan Kaisha Ltd. 600 29,200
Toyoda Gosei Co., Ltd. 400 11,606
Toyota Industries Corp. 1,000 79,451
Toyota Motor Corp. 14,468 1,116,497
Toyota Tsusho Corp. 1,400 56,653
Trend Micro, Inc.* 900 51,816
Tsuruha Holdings, Inc. 200 28,441
Unicharm Corp. 2,700 128,050
 
157


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Japan — (continued)
United Urban Investment Corp. 21 $ 25,998
USS Co., Ltd. 1,500 30,331
Welcia Holdings Co., Ltd. 600 22,633
West Japan Railway Co. 1,000 52,360
Yakult Honsha Co., Ltd. 800 40,346
Yamada Holdings Co., Ltd. 4,000 21,252
Yamaha Corp. 900 53,032
Yamaha Motor Co., Ltd. 2,100 42,863
Yamato Holdings Co., Ltd. 2,000 51,065
Yamazaki Baking Co., Ltd. 1,000 16,701
Yaskawa Electric Corp. 1,600 79,769
Yokogawa Electric Corp. 1,600 31,912
Z Holdings Corp. 17,700 107,107
ZOZO, Inc. 600 14,781
    27,250,846
Jordan — 0.0%
Hikma Pharmaceuticals PLC 1,083 37,223
Luxembourg — 0.3%
ArcelorMittal S.A.* 4,640 106,116
Aroundtown S.A. 6,382 47,584
Eurofins Scientific S.E.* 870 73,381
SES S.A. 2,712 25,453
Tenaris S.A. 3,478 28,185
    280,719
Macao — 0.1%
Sands China Ltd. 16,000 69,878
Wynn Macau Ltd.* 12,400 20,863
    90,741
Mexico — 0.0%
Fresnillo PLC 1,267 19,570
Netherlands — 5.2%
ABN AMRO Bank N.V.* 2,635 25,820
Adyen N.V.* 125 290,443
Aegon N.V. 11,519 45,948
Airbus S.E.* 3,981 436,892
Akzo Nobel N.V. 1,349 144,794
Altice Europe N.V.* 4,140 26,814
Argenx S.E.* 312 91,940
ASML Holding N.V. 2,896 1,402,177
EXOR N.V. 766 62,220
Heineken Holding N.V. 814 76,380
Heineken N.V. 1,738 193,456
ING Groep N.V.* 26,780 248,996
JDE Peet's N.V.* 515 23,361
Just Eat Takeaway.com N.V.* 837 94,374
Koninklijke Ahold Delhaize N.V. 7,562 213,334
Koninklijke DSM N.V. 1,176 202,238
Koninklijke KPN N.V. 23,729 72,119
Koninklijke Philips N.V.* 6,181 332,955
Koninklijke Vopak N.V. 469 24,603
NN Group N.V. 2,015 87,109
Prosus N.V.* 3,348 361,513
  Number of
Shares
Value†
 
Netherlands — (continued)
QIAGEN N.V.* 1,512 $ 78,411
Randstad N.V.* 823 53,275
Royal Dutch Shell PLC, Class A 27,712 485,969
Royal Dutch Shell PLC, Class B 25,021 424,074
Wolters Kluwer N.V. 1,909 160,882
    5,660,097
New Zealand — 0.4%
Auckland International Airport Ltd.* 7,064 38,630
Fisher & Paykel Healthcare Corp. Ltd. 4,021 95,494
Mercury NZ Ltd. 5,143 24,204
Meridian Energy Ltd. 8,838 47,333
Ryman Healthcare Ltd. 2,831 31,059
Spark New Zealand Ltd. 11,848 40,132
The a2 Milk Co., Ltd.* 5,132 44,635
Xero Ltd.* 835 94,772
    416,259
Norway — 0.6%
Adevinta ASA* 1,674 28,140
DNB ASA* 6,388 125,177
Equinor ASA 6,739 113,730
Gjensidige Forsikring ASA 1,242 27,721
Mowi ASA 2,898 64,704
Norsk Hydro ASA 8,484 39,485
Orkla ASA 4,885 49,595
Schibsted ASA, Class A* 520 22,162
Schibsted ASA, Class B* 588 21,827
Telenor ASA 4,966 84,297
Yara International ASA 1,154 47,874
    624,712
Portugal — 0.2%
Banco Espirito Santo S.A.* 27,017 0
EDP - Energias de Portugal S.A. 18,726 117,534
Galp Energia SGPS S.A. 3,702 39,228
Jeronimo Martins SGPS S.A. 1,733 29,131
    185,893
Singapore — 1.1%
Ascendas Real Estate Investment Trust 20,490 46,255
CapitaLand Integrated Commercial Trust 31,532 51,568
CapitaLand Ltd. 16,607 41,206
City Developments Ltd. 3,000 18,085
DBS Group Holdings Ltd. 12,003 227,466
Genting Singapore Ltd. 36,200 23,314
Jardine Matheson Holdings Ltd. 1,500 83,907
Keppel Corp. Ltd. 10,300 41,946
Mapletree Commercial Trust 15,200 24,502
Mapletree Logistics Trust 19,361 29,467
Oversea-Chinese Banking Corp. Ltd. 22,590 172,147
Singapore Airlines Ltd.* 10,000 32,447
Singapore Exchange Ltd. 5,000 35,120
Singapore Technologies Engineering Ltd. 9,500 27,494
 
158


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Singapore — (continued)
Singapore Telecommunications Ltd. 56,800 $ 99,181
Suntec Real Estate Investment Trust 10,700 12,068
United Overseas Bank Ltd. 7,837 133,577
UOL Group Ltd. 3,107 18,117
Venture Corp. Ltd. 1,700 24,997
Wilmar International Ltd. 13,800 48,587
    1,191,451
Spain — 2.4%
ACS Actividades de Construccion y Servicios S.A. 1,856 61,662
Aena SME S.A.* 469 81,535
Amadeus IT Group S.A. 3,056 225,586
Banco Bilbao Vizcaya Argentaria S.A. 45,237 224,222
Banco Santander S.A.* 117,257 365,647
CaixaBank S.A. 24,910 64,026
Cellnex Telecom S.A. 2,209 132,657
Enagas S.A. 1,740 38,280
Endesa S.A. 2,216 60,782
Ferrovial S.A. 3,272 90,472
Grifols S.A. 2,070 60,437
Iberdrola S.A. 41,230 592,487
Industria de Diseno Textil S.A. 7,339 232,939
Naturgy Energy Group S.A. 2,049 47,648
Red Electrica Corp. S.A. 3,004 61,675
Repsol S.A. 10,326 104,025
Siemens Gamesa Renewable Energy S.A. 1,562 63,427
Telefonica S.A. 33,785 134,384
Telefonica S.A. 1,877 7,466
    2,649,357
Sweden — 3.2%
Alfa Laval AB* 2,253 62,220
Assa Abloy AB, Class B 6,706 165,719
Atlas Copco AB, Class A 4,517 232,158
Atlas Copco AB, Class B 2,753 123,575
Boliden AB 1,973 69,997
Electrolux AB, Class B 1,401 32,597
Epiroc AB, Class A 4,569 83,040
Epiroc AB, Class B 2,471 41,715
EQT AB 1,699 43,127
Essity AB, Class B 4,150 133,710
Evolution Gaming Group AB 1,100 110,588
Fastighets AB Balder, Class B* 696 36,341
Hennes & Mauritz AB, Class B* 5,431 114,008
Hexagon AB, Class B 1,938 177,680
Husqvarna AB, Class B 2,834 36,779
ICA Gruppen AB 622 31,113
Industrivarden AB, Class A* 735 24,488
Industrivarden AB, Class C* 986 31,870
Investment AB Latour, Class B 1,056 25,579
Investor AB, Class B 3,060 222,717
Kinnevik AB, Class B* 1,611 80,931
L E Lundbergforetagen AB, Class B* 471 25,269
Lundin Energy AB 1,292 35,017
  Number of
Shares
Value†
 
Sweden — (continued)
Nibe Industrier AB, Class B 2,224 $ 72,933
Sandvik AB* 7,731 190,674
Securitas AB, Class B 2,230 35,978
Skandinaviska Enskilda Banken AB, Class A* 11,025 113,530
Skanska AB, Class B 2,417 61,595
SKF AB, Class B 2,667 69,393
Svenska Cellulosa AB SCA, Class B* 4,322 75,566
Svenska Handelsbanken AB, Class A* 10,939 110,265
Swedbank AB, Class A* 5,991 105,084
Swedish Match AB 1,097 85,369
Tele2 AB, Class B 3,276 43,335
Telefonaktiebolaget LM Ericsson, Class B 20,104 239,146
Telia Co., AB 17,132 70,753
Volvo AB, Class B* 9,790 231,760
    3,445,619
Switzerland — 9.8%
ABB Ltd. 12,448 349,157
Adecco Group AG 1,018 67,802
Alcon, Inc.* 3,294 218,709
Baloise Holding AG 301 53,479
Banque Cantonale Vaudoise 175 19,048
Barry Callebaut AG 19 45,279
Chocoladefabriken Lindt & Spruengli AG 1 100,441
Chocoladefabriken Lindt & Spruengli AG, Participation Certificates 7 68,231
Cie Financiere Richemont S.A. 3,514 317,462
Clariant AG 1,199 25,438
Coca-Cola HBC AG* 1,426 46,178
Credit Suisse Group AG* 16,645 214,902
EMS-Chemie Holding AG 52 50,022
Geberit AG 252 157,745
Givaudan S.A. 62 262,311
Glencore PLC* 68,293 216,885
Julius Baer Group Ltd. 1,484 85,495
Kuehne + Nagel International AG 354 80,329
LafargeHolcim Ltd.* 3,500 192,107
Logitech International S.A. 1,098 106,610
Lonza Group AG 501 322,728
Nestle S.A. 19,560 2,312,213
Novartis AG 15,061 1,418,113
Partners Group Holding AG 126 148,055
Roche Holding AG 4,768 1,660,688
Schindler Holding AG 125 33,787
Schindler Holding AG, Participation Certificates 269 72,748
SGS S.A. 41 123,589
Sika AG 952 259,509
Sonova Holding AG* 360 93,634
STMicroelectronics N.V. 4,332 160,266
Straumann Holding AG 69 80,828
Swiss Life Holding AG* 200 93,294
 
159


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
COMMON STOCKS — (continued)
Switzerland — (continued)
Swiss Prime Site AG 484 $ 47,447
Swiss Re AG 1,938 182,585
Swisscom AG 174 93,705
Temenos AG 430 59,912
The Swatch Group AG 185 50,291
The Swatch Group AG 298 15,726
UBS Group AG 24,773 348,800
Vifor Pharma AG 293 46,052
Zurich Insurance Group AG 1,018 429,007
    10,730,607
United Kingdom — 11.7%
3i Group PLC 6,462 102,209
Admiral Group PLC 1,312 51,879
Anglo American PLC 8,442 278,774
Antofagasta PLC 2,581 50,637
Ashtead Group PLC 3,039 143,140
Associated British Foods PLC* 2,516 77,681
AstraZeneca PLC 8,917 889,143
Auto Trader Group PLC 6,702 54,552
Aveva Group PLC 707 30,867
Aviva PLC 26,405 117,450
BAE Systems PLC 21,801 145,386
Barclays PLC* 118,890 238,504
Barratt Developments PLC* 7,128 65,165
Berkeley Group Holdings PLC 878 56,796
BP PLC 136,896 472,393
British American Tobacco PLC 14,443 536,368
British American Tobacco PLC, ADR 1,064 39,889
BT Group PLC* 59,975 108,102
Bunzl PLC 2,198 73,387
Burberry Group PLC* 2,621 64,005
CNH Industrial N.V.* 7,103 89,288
Coca-Cola European Partners PLC 1,476 71,376
Compass Group PLC 12,236 228,218
Croda International PLC 875 78,689
Diageo PLC 15,858 627,481
Direct Line Insurance Group PLC 9,937 43,462
Evraz PLC 3,788 24,209
Ferguson PLC 1,531 186,017
Fiat Chrysler Automobiles N.V.* 7,408 133,833
GlaxoSmithKline PLC 34,037 622,808
Halma PLC 2,528 84,663
Hargreaves Lansdown PLC 2,149 44,747
HSBC Holdings PLC* 138,276 714,229
Imperial Brands PLC 6,435 134,971
Informa PLC* 10,714 80,112
InterContinental Hotels Group PLC* 1,153 74,732
Intertek Group PLC 1,128 87,127
J. Sainsbury PLC 12,992 39,934
JD Sports Fashion PLC* 2,685 31,544
Johnson Matthey PLC 1,361 45,091
Kingfisher PLC* 14,253 52,667
Land Securities Group PLC 4,914 45,386
Legal & General Group PLC 40,533 147,719
  Number of
Shares
Value†
 
United Kingdom — (continued)
Lloyds Banking Group PLC* 483,753 $ 241,179
London Stock Exchange Group PLC 2,164 267,117
M&G PLC 18,831 50,828
Melrose Industries PLC* 31,627 77,056
Mondi PLC 3,375 79,082
National Grid PLC 23,660 279,600
Natwest Group PLC* 31,465 71,929
Next PLC* 943 90,930
NMC Health PLC* 538 69
Ocado Group PLC* 3,089 96,593
Pearson PLC 4,876 44,753
Persimmon PLC 2,126 80,241
Phoenix Group Holdings PLC 3,778 36,205
Prudential PLC 17,613 323,867
Reckitt Benckiser Group PLC 4,813 429,580
RELX PLC 7,157 175,113
RELX PLC 5,881 143,712
Rentokil Initial PLC* 13,036 90,889
Rolls-Royce Holdings PLC* 55,791 84,436
RSA Insurance Group PLC 6,683 61,944
Schroders PLC 773 35,246
Segro PLC 8,276 107,387
Severn Trent PLC 1,547 48,294
Smith & Nephew PLC 5,814 120,771
Smiths Group PLC 2,596 53,397
Spirax-Sarco Engineering PLC 486 75,021
SSE PLC 7,030 143,997
St. James's Place PLC 3,676 56,883
Standard Chartered PLC* 18,343 116,477
Standard Life Aberdeen PLC 14,470 55,464
Taylor Wimpey PLC* 22,936 51,880
Tesco PLC 67,310 212,415
The British Land Co., PLC 5,472 36,649
The Sage Group PLC 7,202 57,185
Unilever PLC 8,119 486,926
Unilever PLC 9,754 590,615
United Utilities Group PLC 4,874 59,614
Vodafone Group PLC 180,489 296,451
Whitbread PLC* 1,420 60,146
Wm Morrison Supermarkets PLC 15,833 38,311
WPP PLC 8,208 88,942
    12,801,824
TOTAL COMMON STOCKS
(Cost $76,241,496)
  106,843,362
WARRANTS — 0.0%
Switzerland — 0.0%
Cie Financiere Richemont S.A., expiration date 11/22/23*
(Cost $0)
7,198 1,870
PREFERRED STOCKS — 0.5%
Germany — 0.5%
Bayerische Motoren Werke AG 341 22,971
 
160


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
  Number of
Shares
Value†
PREFERRED STOCKS — (continued)
Germany — (continued)
FUCHS PETROLUB S.E. 492 $ 27,760
Henkel AG & Co., KGaA 1,186 133,727
Porsche Automobil Holding S.E. 999 69,008
Sartorius AG 238 100,241
Volkswagen AG 1,277 238,651
TOTAL PREFERRED STOCKS
(Cost $413,774)
  592,358
RIGHTS — 0.0%
Spain — 0.0%
Repsol S.A.*
(Cost $3,624)
10,326 3,541
SHORT-TERM INVESTMENTS — 0.8%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $868,646)
868,646 868,646
TOTAL INVESTMENTS — 99.1%
(Cost $77,527,540)
  $ 108,309,777
Other Assets & Liabilities — 0.9% 985,842
TOTAL NET ASSETS — 100.0%   $ 109,295,619

See Security Valuation Note.
* Non-income producing security.
A/S— Aktieselskab.
AB— Aktiebolag.
ADR— American Depositary Receipt.
AG— Aktiengesellschaft.
ASA— Allmennaksjeselskap.
KGaA— Kommanditgesellschaft auf Aktien.
MSCI— Morgan Stanley Capital International.
N.V.— Naamloze Vennootschap.
OYJ— Julkinen Osakeyhtiö.
PLC— Public Limited Company.
REIT— Real Estate Investment Trust.
S.A.— Societe Anonyme.
S.E.— Societas Europaea.
SpA— Società per Azioni.
COMMON STOCKS
INDUSTRY DIVERSIFICATION
% of Market
Value
Value†
Advertising 0.2% $ 224,474
Aerospace & Defense 1.1% 1,186,368
Agriculture 0.9% 963,772
Airlines 0.1% 109,691
Apparel 2.2% 2,386,255
Auto Manufacturers 3.0% 3,178,377
Auto Parts & Equipment 0.9% 965,249
Banks 8.7% 9,271,161
Beverages 2.2% 2,308,634
Biotechnology 0.9% 962,522
COMMON STOCKS
INDUSTRY DIVERSIFICATION
% of Market
Value
  Value†
Building Materials 1.8%   $ 1,951,261
Chemicals 3.5%   3,690,754
Commercial Services 2.9%   3,089,379
Computers 1.2%   1,239,448
Cosmetics & Personal Care 2.5%   2,625,480
Distribution & Wholesale 1.1%   1,188,168
Diversified Financial Services 2.2%   2,323,999
Electric 3.3%   3,523,613
Electrical Components & Equipment 0.8%   808,281
Electronics 2.2%   2,377,596
Energy-Alternate Sources 0.4%   380,683
Engineering & Construction 1.3%   1,366,744
Entertainment 0.8%   846,128
Environmental Control 0.0%   22,935
Food 5.0%   5,294,081
Food Service 0.3%   282,599
Forest Products & Paper 0.4%   472,762
Gas 0.4%   413,663
Hand & Machine Tools 0.4%   448,877
Healthcare Products 2.3%   2,438,503
Healthcare Services 0.9%   935,644
Holding Companies 0.2%   229,753
Home Builders 0.5%   522,145
Home Furnishings 1.1%   1,176,736
Household Products & Wares 0.5%   495,587
Insurance 5.1%   5,421,593
Internet 1.4%   1,488,203
Investment Companies 0.6%   681,913
Iron & Steel 0.5%   537,624
Leisure Time 0.2%   212,934
Lodging 0.4%   461,965
Machinery — Construction & Mining 1.0%   1,109,168
Machinery — Diversified 2.5%   2,715,461
Media 0.5%   535,310
Metal Fabricate/Hardware 0.2%   178,225
Mining 2.6%   2,835,652
Miscellaneous Manufacturing 1.1%   1,176,536
Office & Business Equipment 0.3%   314,542
Oil & Gas 3.1%   3,278,385
Pharmaceuticals 8.5%   9,068,037
Pipelines 0.1%   87,646
Real Estate 1.5%   1,660,236
Real Estate Investment Trusts 1.4%   1,526,018
Retail 2.2%   2,402,567
Semiconductors 2.5%   2,672,761
Shipbuilding 0.0%   30,085
Software 1.7%   1,813,685
Telecommunications 3.8%   4,096,979
Textiles 0.0%   22,582
Toys, Games & Hobbies 0.6%   626,134
Transportation 1.8%   1,944,601
Water 0.2%   243,198
  100.0%   $106,843,362
 
161


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Developed International Index Fund
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Australia $ 8,329,519 $ $ 8,329,519 $—
Austria 195,594 195,594
Belgium 982,616 982,616
Bermuda 34,800 34,800
Denmark 2,703,983 2,703,983
Finland 1,327,541 1,327,541
France 11,119,051 11,119,051
Germany 9,341,844 97,598 9,244,246
Hong Kong 3,298,800 25,358 3,273,442
Ireland 1,120,444 1,120,444
Isle of Man 64,339 64,339
Israel 658,283 231,759 426,524
Italy 2,281,630 2,281,630
Japan 27,250,846 27,250,846
Jordan 37,223 37,223
Luxembourg 280,719 280,719
Macao 90,741 90,741
Mexico 19,570 19,570
Netherlands 5,660,097 78,411 5,581,686
New Zealand 416,259 416,259
Norway 624,712 624,712
Portugal 185,893 185,893
Singapore 1,191,451 1,191,451
Spain 2,649,357 2,649,357
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Sweden $ 3,445,619 $ $ 3,445,619 $—
Switzerland 10,730,607 10,730,607
United Kingdom 12,801,824 630,504 12,171,320
Total Common Stocks $ 106,843,362 $ 1,063,630 $ 105,779,732 $
Preferred Stocks 592,358 592,358
Rights 3,541 3,541
Warrants 1,870 1,870
Short-Term Investments 868,646 868,646
Total Investments $ 108,309,777 $ 1,937,687 $ 106,372,090 $
Other Financial Instruments(1)        
Futures Contracts $ 47,990 $ 47,990 $ $—
Total Assets—Other Financial Instruments $ 47,990 $ 47,990 $ $
(1) Other financial instruments are derivative instruments not reflected in the value of total investments in securities in the Schedule of Investments such as future contracts which are valued at the unrealized appreciation (depreciation) on the instrument.
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
 
Futures contracts held by the Fund at December 31, 2020 are as follows:
Futures Contracts:
Exchange Traded
Type   Futures Contract   Expiration
Date
  Numbers
of
Contracts
  Units per
Contract
  Closing
Price
  Notional
Value
  Unrealized
Appreciation
  Unrealized
Depreciation
Long   E-Mini MSCI EAFE Index   03/19/2021   21   50   $2,131   $2,237,340   $47,990   $—
                            $47,990   $—
The accompanying notes are an integral part of these financial statements.
162


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
International Equity Fund
  Number of
Shares
Value†
COMMON STOCKS — 97.8%
Canada — 9.7%
Alimentation Couche-Tard, Inc., Class B 300,543 $ 10,242,403
Canadian National Railway Co. 103,387 11,366,154
Constellation Software, Inc. 8,573 11,132,440
Topicus.com, Inc.* 15,944 60,278
    32,801,275
China — 4.3%
Alibaba Group Holding Ltd.* 173,600 5,049,074
Alibaba Group Holding Ltd., ADR* 21,632 5,034,415
Tencent Holdings Ltd. 62,906 4,526,326
    14,609,815
France — 10.0%
Air Liquide S.A. 39,047 6,401,634
LVMH Moet Hennessy Louis Vuitton S.E. 16,417 10,277,065
Safran S.A.* 55,519 7,868,923
Sartorius Stedim Biotech 11,211 3,996,430
Teleperformance 14,922 4,953,824
    33,497,876
Germany — 4.5%
adidas AG* 16,598 6,038,435
CTS Eventim AG & Co., KGaA* 134,120 8,964,755
    15,003,190
Hong Kong — 1.4%
Techtronic Industries Co., Ltd. 325,460 4,651,938
India — 6.9%
Asian Paints Ltd. 213,154 8,073,915
Housing Development Finance Corp. Ltd. 200,689 7,031,330
Tata Consultancy Services Ltd. 207,336 8,141,076
    23,246,321
Ireland — 7.7%
Experian PLC 118,121 4,487,257
Flutter Entertainment PLC* 56,104 11,407,919
Medtronic PLC 85,358 9,998,836
    25,894,012
Italy — 2.7%
Ferrari N.V. 39,443 9,148,470
Japan — 9.9%
Asahi Group Holdings Ltd. 250,523 10,317,094
Hoya Corp. 59,840 8,287,530
Keyence Corp. 14,300 8,043,993
Obic Co., Ltd. 33,116 6,655,582
    33,304,199
Luxembourg — 3.2%
Eurofins Scientific S.E.* 128,015 10,797,551
Netherlands — 5.3%
Adyen N.V.* 2,088 4,851,555
IMCD N.V. 25,970 3,305,462
  Number of
Shares
Value†
 
Netherlands — (continued)
Wolters Kluwer N.V. 113,195 $ 9,539,564
    17,696,581
Spain — 0.9%
Cellnex Telecom S.A. 52,217 3,135,786
Switzerland — 7.1%
Alcon, Inc.* 150,681 10,004,637
Nestle S.A. 118,183 13,970,568
    23,975,205
United Kingdom — 18.8%
Ashtead Group PLC 183,153 8,626,687
Diageo PLC 288,065 11,398,376
Halma PLC 270,208 9,049,339
IHS Markit Ltd. 92,221 8,284,212
London Stock Exchange Group PLC 93,520 11,543,785
Rentokil Initial PLC* 1,074,024 7,488,281
Unilever PLC 111,638 6,759,802
    63,150,482
United States — 5.4%
Mastercard, Inc., Class A 28,377 10,128,886
Mondelez International, Inc., Class A 137,272 8,026,294
    18,155,180
TOTAL COMMON STOCKS
(Cost $250,145,475)
  329,067,881
SHORT-TERM INVESTMENTS — 1.2%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $4,000,950)
4,000,950 4,000,950
TOTAL INVESTMENTS — 99.0%
(Cost $254,146,425)
  $ 333,068,831
Other Assets & Liabilities — 1.0% 3,204,910
TOTAL NET ASSETS — 100.0%   $ 336,273,741

See Security Valuation Note.
* Non-income producing security.
ADR— American Depositary Receipt.
AG— Aktiengesellschaft.
KGaA— Kommanditgesellschaft auf Aktien.
N.V.— Naamloze Vennootschap.
PLC— Public Limited Company.
S.A.— Societe Anonyme.
S.E.— Societas Europaea.
    
 
163


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
International Equity Fund
Country Weightings as of 12/31/2020††
United Kingdom 19%
France 10
Japan 10
Canada 10
Ireland 8
Switzerland 7
India 7
Other 29
Total 100%
†† % of total investments as of December 31, 2020.
COMMON STOCKS
INDUSTRY DIVERSIFICATION
% of Market
Value
  Value†
Aerospace & Defense 2.4%   $ 7,868,923
Apparel 5.0%   16,315,500
Auto Manufacturers 2.8%   9,148,470
Beverages 6.6%   21,715,470
Chemicals 5.4%   17,781,011
Commercial Services 10.2%   33,737,992
Computers 6.0%   19,750,482
Cosmetics & Personal Care 2.1%   6,759,802
Diversified Financial Services 8.7%   28,704,001
Electronics 5.3%   17,336,869
Engineering & Construction 0.9%   3,135,786
Entertainment 6.2%   20,372,674
Food 6.7%   21,996,862
Hand & Machine Tools 1.4%   4,651,938
Healthcare Products 7.3%   23,999,903
Healthcare Services 3.3%   10,797,551
Internet 4.4%   14,609,815
Machinery — Diversified 2.4%   8,043,993
Media 2.9%   9,539,564
Retail 3.1%   10,242,403
Software 3.4%   11,192,718
Transportation 3.5%   11,366,154
  100.0%   $329,067,881
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Canada $ 32,801,275 $32,740,997 $ 60,278 $—
China 14,609,815 5,034,415 9,575,400
France 33,497,876 33,497,876
Germany 15,003,190 15,003,190
Hong Kong 4,651,938 4,651,938
India 23,246,321 23,246,321
Ireland 25,894,012 9,998,836 15,895,176
Italy 9,148,470 9,148,470
Japan 33,304,199 33,304,199
Luxembourg 10,797,551 10,797,551
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Netherlands $ 17,696,581 $ $ 17,696,581 $—
Spain 3,135,786 3,135,786
Switzerland 23,975,205 23,975,205
United Kingdom 63,150,482 15,044,014 48,106,468
United States 18,155,180 18,155,180
Total Common Stocks $ 329,067,881 $ 80,973,442 $ 248,094,439 $
Short-Term Investments 4,000,950 4,000,950
Total Investments $ 333,068,831 $ 84,974,392 $ 248,094,439 $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
164


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Emerging Markets Equity Fund
  Number of
Shares
Value†
COMMON STOCKS — 99.6%
Belgium — 1.6%
Anheuser-Busch InBev N.V. 33,518 $ 2,338,442
Brazil — 4.9%
Ambev S.A., ADR 215,644 659,871
B3 S.A. - Brasil Bolsa Balcao 113,595 1,355,477
Lojas Renner S.A. 310,803 2,605,283
Notre Dame Intermedica Participacoes S.A. 90,490 1,364,789
XP, Inc., Class A* 28,123 1,115,639
    7,101,059
China — 29.0%
Alibaba Group Holding Ltd.* 145,600 4,234,708
Alibaba Group Holding Ltd., ADR* 8,463 1,969,594
Autohome, Inc., ADR 23,635 2,354,519
Baozun, Inc., ADR* 24,965 857,548
ENN Energy Holdings Ltd. 177,961 2,612,415
Hundsun Technologies, Inc., Class A 99,357 1,595,438
NetEase, Inc. 83,696 1,598,751
NetEase, Inc., ADR 16,635 1,593,134
Shenzhou International Group Holdings Ltd. 76,456 1,498,404
Sunny Optical Technology Group Co., Ltd. 87,762 1,917,467
Tencent Holdings Ltd. 119,710 8,613,589
Tencent Music Entertainment Group, ADR* 172,464 3,318,207
Toly Bread Co., Ltd., Class A 151,182 1,366,132
Wuliangye Yibin Co., Ltd., Class A 79,199 3,537,055
Yum China Holdings, Inc. 70,506 4,025,187
Yum China Holdings, Inc. 19,152 1,098,021
    42,190,169
Hong Kong — 6.3%
Budweiser Brewing Co., APAC, Ltd. 946,594 3,126,916
Hong Kong Exchanges & Clearing Ltd. 31,862 1,747,686
MTR Corp., Ltd. 363,463 2,032,717
Techtronic Industries Co., Ltd. 97,461 1,393,052
Vitasoy International Holdings Ltd. 223,975 872,421
    9,172,792
India — 14.1%
Asian Paints Ltd. 23,629 895,027
Eicher Motors Ltd. 39,793 1,380,428
HCL Technologies Ltd. 375,766 4,877,032
HDFC Bank Ltd.* 84,792 1,670,104
HDFC Bank Ltd., ADR* 2,339 169,016
Housing Development Finance Corp. Ltd. 86,091 3,016,280
Kotak Mahindra Bank Ltd.* 143,738 3,928,455
Tata Consultancy Services Ltd. 117,212 4,602,345
    20,538,687
Indonesia — 4.8%
Bank Central Asia Tbk PT 1,150,782 2,773,995
Bank Rakyat Indonesia Persero Tbk PT 5,052,932 1,502,254
  Number of
Shares
Value†
 
Indonesia — (continued)
Telekom Indonesia Persero Tbk PT 11,454,974 $ 2,700,682
    6,976,931
Malaysia — 1.5%
Public Bank Bhd 425,485 2,181,717
Mexico — 3.3%
Fomento Economico Mexicano S.A.B. de C.V., ADR 33,003 2,500,637
Wal-Mart de Mexico S.A.B. de C.V. 798,266 2,242,422
    4,743,059
Netherlands — 3.9%
Heineken N.V. 50,967 5,673,117
Singapore — 2.0%
BOC Aviation Ltd. 64,699 560,003
United Overseas Bank Ltd. 139,884 2,384,241
    2,944,244
South Africa — 2.6%
Naspers Ltd. 18,577 3,804,100
South Korea — 11.3%
LG Household & Health Care Ltd. 1,443 2,153,713
NAVER Corp. 11,184 3,014,863
NCSoft Corp.* 1,121 962,436
Samsung Electronics Co., Ltd. 45,249 3,378,993
SK Hynix, Inc. 63,246 6,908,266
    16,418,271
Taiwan — 10.1%
Largan Precision Co., Ltd. 12,470 1,421,107
Taiwan Semiconductor Manufacturing Co., Ltd. 594,377 11,244,111
Win Semiconductors Corp. 163,627 2,019,711
    14,684,929
Thailand — 2.7%
Airports of Thailand PCL 619,961 1,286,496
CP ALL PCL 1,331,467 2,587,668
    3,874,164
United Kingdom — 1.5%
Unilever PLC 35,338 2,139,754
TOTAL COMMON STOCKS
(Cost $105,858,063)
  144,781,435
WARRANTS — 0.5%
Vietnam — 0.5%
Vietnam Dairy Products JSC, expiration date 02/17/21*
(Cost $547,013)
151,740 714,695
 
165


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Emerging Markets Equity Fund
  Number of
Shares
Value†
SHORT-TERM INVESTMENTS — 1.2%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $1,787,888)
1,787,888 $ 1,787,888
TOTAL INVESTMENTS — 101.3%
(Cost $108,192,964)
  $ 147,284,018
Other Assets & Liabilities — (1.3)% (1,948,589)
TOTAL NET ASSETS — 100.0%   $ 145,335,429

See Security Valuation Note.
* Non-income producing security.
ADR— American Depositary Receipt.
N.V.— Naamloze Vennootschap.
PCL— Public Company Limited.
PLC— Public Limited Company.
S.A.— Societe Anonyme.
S.A.B. de C.V.— Sociedad Anonima de Capital Variable.
Tbk PT— Terbuka Perseroan Terbatas.
COMMON STOCKS
INDUSTRY DIVERSIFICATION
% of Market
Value
  Value†
Apparel 1.0%   $ 1,498,404
Auto Manufacturers 0.9%   1,380,428
Banks 10.1%   14,609,782
Beverages 12.9%   18,708,459
Chemicals 0.6%   895,027
Computers 3.2%   4,602,345
Cosmetics & Personal Care 3.0%   4,293,467
Diversified Financial Services 5.4%   7,795,085
Engineering & Construction 0.9%   1,286,496
Food 0.9%   1,366,132
Gas 1.8%   2,612,415
Hand & Machine Tools 1.0%   1,393,052
Healthcare Services 0.9%   1,364,789
Internet 20.1%   29,129,564
Miscellaneous Manufacturing 2.3%   3,338,574
Retail 8.7%   12,558,581
Semiconductors 16.3%   23,551,081
Software 6.7%   9,664,355
Telecommunications 1.9%   2,700,682
Transportation 1.4%   2,032,717
  100.0%   $144,781,435
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks        
Belgium $ 2,338,442 $ $ 2,338,442 $—
Brazil 7,101,059 7,101,059
China 42,190,169 14,118,189 28,071,980
Hong Kong 9,172,792 9,172,792
India 20,538,687 169,016 20,369,671
Indonesia 6,976,931 6,976,931
Malaysia 2,181,717 2,181,717
Mexico 4,743,059 4,743,059
Netherlands 5,673,117 5,673,117
Singapore 2,944,244 2,944,244
South Africa 3,804,100 3,804,100
South Korea 16,418,271 16,418,271
Taiwan 14,684,929 14,684,929
Thailand 3,874,164 3,874,164
United Kingdom 2,139,754 2,139,754
Total Common Stocks $ 144,781,435 $ 28,271,077 $ 116,510,358 $
Warrants 714,695 714,695
Short-Term Investments 1,787,888 1,787,888
Total Investments $ 147,284,018 $ 30,058,965 $ 117,225,053 $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
166


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Real Estate Securities Fund
  Number of
Shares
Value†
COMMON STOCKS — 4.0%
Entertainment — 1.5%
Caesars Entertainment, Inc.* 24,037 $ 1,785,228
Lodging — 0.9%
Boyd Gaming Corp.* 26,373 1,131,929
Real Estate — 1.6%
Jones Lang LaSalle, Inc.* 12,944 1,920,501
TOTAL COMMON STOCKS
(Cost $3,322,139)
4,837,658
REAL ESTATE INVESTMENT TRUSTS — 94.0%
Apartments — 9.5%
Essex Property Trust, Inc. 16,367 3,885,853
Invitation Homes, Inc. 89,167 2,648,260
UDR, Inc. 127,557 4,902,016
    11,436,129
Building & Real Estate — 3.8%
Agree Realty Corp. 15,555 1,035,652
Spirit Realty Capital, Inc. 87,752 3,524,998
    4,560,650
Diversified — 26.5%
American Tower Corp. 41,352 9,281,870
Apartment Income REIT Corp.* 23,862 916,539
Crown Castle International Corp. 30,604 4,871,851
Digital Realty Trust, Inc. 8,239 1,149,423
Duke Realty Corp. 144,681 5,782,900
SBA Communications Corp. 16,212 4,573,891
Weyerhaeuser Co. 139,074 4,663,151
WP Carey, Inc. 12,721 897,848
    32,137,473
Healthcare — 12.6%
Healthcare Trust of America, Inc., Class A 64,514 1,776,716
Healthpeak Properties, Inc. 183,976 5,561,594
Medical Properties Trust, Inc. 90,417 1,970,186
Omega Healthcare Investors, Inc. 37,430 1,359,458
Ventas, Inc. 75,225 3,689,034
Welltower, Inc. 13,989 903,969
    15,260,957
Hotels & Resorts — 5.2%
Host Hotels & Resorts, Inc. 81,942 1,198,811
Park Hotels & Resorts, Inc. 46,589 799,001
VICI Properties, Inc. 169,937 4,333,394
    6,331,206
Industrial — 10.1%
Americold Realty Trust 68,266 2,548,370
CyrusOne, Inc. 54,041 3,953,099
First Industrial Realty Trust, Inc. 14,222 599,173
Prologis, Inc. 42,269 4,212,529
QTS Realty Trust, Inc., Class A 14,929 923,806
    12,236,977
  Number of
Shares
Value†
 
Manufactured Homes — 2.2%
Sun Communities, Inc. 17,509 $ 2,660,493
Office Property — 4.1%
Hudson Pacific Properties, Inc. 62,127 1,492,290
VEREIT, Inc. 92,402 3,491,872
    4,984,162
Regional Malls — 5.3%
Simon Property Group, Inc. 75,464 6,435,570
Storage & Warehousing — 9.5%
Extra Space Storage, Inc. 40,169 4,653,980
Public Storage 29,566 6,827,677
    11,481,657
Strip Centers — 0.8%
SITE Centers Corp. 90,842 919,321
Telecommunications — 4.4%
Equinix, Inc. 7,535 5,381,346
TOTAL REAL ESTATE INVESTMENT TRUSTS
(Cost $102,060,826)
  113,825,941
     
SHORT-TERM INVESTMENTS — 0.3%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $326,848)
326,848 326,848
TOTAL INVESTMENTS — 98.3%
(Cost $105,709,813)
  $ 118,990,447
Other Assets & Liabilities — 1.7% 2,072,764
TOTAL NET ASSETS — 100.0%   $ 121,063,211

See Security Valuation Note.
* Non-income producing security.
REIT— Real Estate Investment Trust.
 
167


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Real Estate Securities Fund
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Common Stocks $ 4,837,658 $ 4,837,658 $— $—
Real Estate Investment Trusts 113,825,941 113,825,941
Short-Term Investments 326,848 326,848
Total Investments $ 118,990,447 $ 118,990,447 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
168


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Aggressive Allocation Fund
  Number of
Shares
Value†
AFFILIATED EQUITY FUNDS — 57.7%
Penn Series Flexibly Managed Fund* 27,126 $ 2,091,920
Penn Series Index 500 Fund* 281,914 9,108,655
Penn Series Large Cap Growth Fund* 68,904 2,105,718
Penn Series Large Cap Value Fund* 166,737 5,525,659
Penn Series Large Core Value Fund* 240,432 5,573,204
Penn Series Large Growth Stock Fund* 9,853 703,324
Penn Series Mid Cap Growth Fund* 35,878 1,406,780
Penn Series Mid Cap Value Fund* 59,949 1,390,827
Penn Series Mid Core Value Fund* 176,072 4,819,103
Penn Series Real Estate Securities Fund* 79,041 2,084,307
Penn Series Small Cap Growth Fund* 33,917 2,125,222
Penn Series Small Cap Value Fund* 17,197 691,986
Penn Series SMID Cap Growth Fund* 26,833 1,405,496
Penn Series SMID Cap Value Fund* 47,921 1,379,173
TOTAL AFFILIATED EQUITY FUNDS
(Cost $29,857,099)
  40,411,374
AFFILIATED FIXED INCOME FUNDS — 8.8%
Penn Series High Yield Bond Fund* 129,698 2,077,767
Penn Series Limited Maturity Bond Fund* 310,255 4,135,698
TOTAL AFFILIATED FIXED INCOME FUNDS
(Cost $5,686,929)
  6,213,465
AFFILIATED INTERNATIONAL EQUITY FUNDS — 33.0%
Penn Series Developed International Index Fund* 526,464 8,391,838
Penn Series Emerging Markets Equity Fund* 419,695 6,266,040
Penn Series International Equity Fund* 216,773 8,458,497
TOTAL AFFILIATED INTERNATIONAL EQUITY FUNDS
(Cost $17,287,687)
  23,116,375
SHORT-TERM INVESTMENTS — 0.6%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $402,669)
402,669 402,669
TOTAL INVESTMENTS — 100.1%
(Cost $53,234,384)
  $ 70,143,883
Other Assets & Liabilities — (0.1)% (70,318)
TOTAL NET ASSETS — 100.0%   $ 70,073,565

See Security Valuation Note.
* Non-income producing security.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Affiliated Equity Funds $40,411,374 $40,411,374 $— $—
Affiliated Fixed Income Funds 6,213,465 6,213,465
Affiliated International Equity Funds 23,116,375 23,116,375
Short-Term Investments 402,669 402,669
Total Investments $ 70,143,883 $ 70,143,883 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
169


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Moderately Aggressive Allocation Fund
  Number of
Shares
Value†
AFFILIATED EQUITY FUNDS — 56.7%
Penn Series Flexibly Managed Fund* 176,054 $ 13,577,317
Penn Series Index 500 Fund* 844,450 27,284,185
Penn Series Large Cap Growth Fund* 223,582 6,832,663
Penn Series Large Cap Value Fund* 541,124 17,932,855
Penn Series Large Core Value Fund* 780,272 18,086,695
Penn Series Large Growth Stock Fund* 31,968 2,281,886
Penn Series Mid Cap Growth Fund* 116,395 4,563,845
Penn Series Mid Cap Value Fund* 97,279 2,256,861
Penn Series Mid Core Value Fund* 489,796 13,405,724
Penn Series Real Estate Securities Fund* 256,529 6,764,666
Penn Series Small Cap Growth Fund* 73,356 4,596,502
Penn Series Small Cap Index Fund* 74,800 2,251,494
Penn Series Small Cap Value Fund* 55,810 2,245,777
Penn Series SMID Cap Growth Fund* 43,524 2,279,769
Penn Series SMID Cap Value Fund* 155,535 4,476,291
TOTAL AFFILIATED EQUITY FUNDS
(Cost $90,278,456)
  128,836,530
AFFILIATED FIXED INCOME FUNDS — 17.8%
Penn Series High Yield Bond Fund* 420,891 6,742,671
Penn Series Limited Maturity Bond Fund* 1,678,064 22,368,592
Penn Series Quality Bond Fund* 645,524 11,206,295
TOTAL AFFILIATED FIXED INCOME FUNDS
(Cost $36,114,956)
  40,317,558
AFFILIATED INTERNATIONAL EQUITY FUNDS — 25.0%
Penn Series Developed International Index Fund* 1,281,212 20,422,519
Penn Series Emerging Markets Equity Fund* 907,934 13,555,460
Penn Series International Equity Fund* 586,101 22,869,659
TOTAL AFFILIATED INTERNATIONAL EQUITY FUNDS
(Cost $40,591,468)
  56,847,638
SHORT-TERM INVESTMENTS — 0.5%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $971,404)
971,404 971,404
TOTAL INVESTMENTS — 100.0%
(Cost $167,956,284)
  $ 226,973,130
Other Assets & Liabilities — 0.0% 111,114
TOTAL NET ASSETS — 100.0%   $ 227,084,244

See Security Valuation Note.
* Non-income producing security.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Affiliated Equity Funds $128,836,530 $128,836,530 $— $—
Affiliated Fixed Income Funds 40,317,558 40,317,558
Affiliated International Equity Funds 56,847,638 56,847,638
Short-Term Investments 971,404 971,404
Total Investments $ 226,973,130 $ 226,973,130 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
170


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Moderate Allocation Fund
  Number of
Shares
Value†
AFFILIATED EQUITY FUNDS — 44.8%
Penn Series Flexibly Managed Fund* 221,755 $ 17,101,758
Penn Series Index 500 Fund* 886,387 28,639,156
Penn Series Large Cap Growth Fund* 187,750 5,737,635
Penn Series Large Cap Value Fund* 425,990 14,117,300
Penn Series Large Core Value Fund* 614,251 14,238,346
Penn Series Large Growth Stock Fund* 40,269 2,874,374
Penn Series Mid Cap Growth Fund* 146,617 5,748,860
Penn Series Mid Core Value Fund* 719,753 19,699,649
Penn Series Real Estate Securities Fund* 215,410 5,680,351
Penn Series Small Cap Growth Fund* 46,202 2,895,045
Penn Series Small Cap Index Fund* 94,219 2,835,996
Penn Series Small Cap Value Fund* 70,296 2,828,706
Penn Series SMID Cap Growth Fund* 54,826 2,871,760
Penn Series SMID Cap Value Fund* 97,952 2,819,070
TOTAL AFFILIATED EQUITY FUNDS
(Cost $87,428,655)
  128,088,006
AFFILIATED FIXED INCOME FUNDS — 37.5%
Penn Series High Yield Bond Fund* 706,871 11,324,074
Penn Series Limited Maturity Bond Fund* 2,959,159 39,445,589
Penn Series Quality Bond Fund* 3,252,405 56,461,745
TOTAL AFFILIATED FIXED INCOME FUNDS
(Cost $92,508,778)
  107,231,408
AFFILIATED INTERNATIONAL EQUITY FUNDS — 17.0%
Penn Series Developed International Index Fund* 896,575 14,291,402
Penn Series Emerging Markets Equity Fund* 953,020 14,228,589
Penn Series International Equity Fund* 516,791 20,165,213
TOTAL AFFILIATED INTERNATIONAL EQUITY FUNDS
(Cost $33,095,167)
  48,685,204
SHORT-TERM INVESTMENTS — 0.4%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $1,142,699)
1,142,699 1,142,699
TOTAL INVESTMENTS — 99.7%
(Cost $214,175,299)
  $ 285,147,317
Other Assets & Liabilities — 0.3% 762,393
TOTAL NET ASSETS — 100.0%   $ 285,909,710

See Security Valuation Note.
* Non-income producing security.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Affiliated Equity Funds $128,088,006 $128,088,006 $— $—
Affiliated Fixed Income Funds 107,231,408 107,231,408
Affiliated International Equity Funds 48,685,204 48,685,204
Short-Term Investments 1,142,699 1,142,699
Total Investments $ 285,147,317 $ 285,147,317 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
171


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Moderately Conservative Allocation Fund
  Number of
Shares
Value†
AFFILIATED EQUITY FUNDS — 32.8%
Penn Series Flexibly Managed Fund* 97,640 $ 7,530,019
Penn Series Index 500 Fund* 175,628 5,674,530
Penn Series Large Cap Growth Fund* 62,001 1,894,754
Penn Series Large Cap Value Fund* 140,673 4,661,923
Penn Series Large Core Value Fund* 202,843 4,701,901
Penn Series Mid Core Value Fund* 101,864 2,788,016
Penn Series Real Estate Securities Fund* 71,137 1,875,876
Penn Series Small Cap Value Fund* 23,214 934,128
Penn Series SMID Cap Value Fund* 32,347 930,946
TOTAL AFFILIATED EQUITY FUNDS
(Cost $22,777,034)
  30,992,093
AFFILIATED FIXED INCOME FUNDS — 56.2%
Penn Series High Yield Bond Fund* 291,790 4,674,469
Penn Series Limited Maturity Bond Fund* 1,605,422 21,400,280
Penn Series Quality Bond Fund* 1,557,380 27,036,123
TOTAL AFFILIATED FIXED INCOME FUNDS
(Cost $46,395,690)
  53,110,872
AFFILIATED INTERNATIONAL EQUITY FUNDS — 10.0%
Penn Series Developed International Index Fund* 177,641 2,831,601
Penn Series Emerging Markets Equity Fund* 125,886 1,879,472
Penn Series International Equity Fund* 121,900 4,756,528
TOTAL AFFILIATED INTERNATIONAL EQUITY FUNDS
(Cost $6,939,785)
  9,467,601
SHORT-TERM INVESTMENTS — 0.8%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $765,294)
765,294 765,294
TOTAL INVESTMENTS — 99.8%
(Cost $76,877,803)
  $ 94,335,860
Other Assets & Liabilities — 0.2% 149,249
TOTAL NET ASSETS — 100.0%   $ 94,485,109

See Security Valuation Note.
* Non-income producing security.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Affiliated Equity Funds $30,992,093 $30,992,093 $— $—
Affiliated Fixed Income Funds 53,110,872 53,110,872
Affiliated International Equity Funds 9,467,601 9,467,601
Short-Term Investments 765,294 765,294
Total Investments $ 94,335,860 $ 94,335,860 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
172


Penn Series Funds, Inc.
Schedule of Investments — December 31, 2020
Conservative Allocation Fund
  Number of
Shares
Value†
AFFILIATED EQUITY FUNDS — 19.7%
Penn Series Flexibly Managed Fund* 63,172 $ 4,871,864
Penn Series Index 500 Fund* 75,753 2,447,580
Penn Series Large Cap Value Fund* 36,406 1,206,496
Penn Series Large Core Value Fund* 78,744 1,825,278
Penn Series Mid Core Value Fund* 43,937 1,202,552
Penn Series Real Estate Securities Fund* 23,012 606,835
TOTAL AFFILIATED EQUITY FUNDS
(Cost $9,448,881)
  12,160,605
AFFILIATED FIXED INCOME FUNDS — 75.0%
Penn Series High Yield Bond Fund* 188,780 3,024,248
Penn Series Limited Maturity Bond Fund* 1,490,246 19,864,980
Penn Series Quality Bond Fund* 1,355,013 23,523,026
TOTAL AFFILIATED FIXED INCOME FUNDS
(Cost $41,688,195)
  46,412,254
AFFILIATED INTERNATIONAL EQUITY FUNDS — 3.0%
Penn Series Developed International Index Fund* 76,621 1,221,337
Penn Series International Equity Fund* 15,773 615,465
TOTAL AFFILIATED INTERNATIONAL EQUITY FUNDS
(Cost $1,461,084)
  1,836,802
SHORT-TERM INVESTMENTS — 1.1%
BlackRock Liquidity FedFund - Institutional Shares (seven-day effective yield 0.000%)
(Cost $689,014)
689,014 689,014
TOTAL INVESTMENTS — 98.8%
(Cost $53,287,174)
  $ 61,098,675
Other Assets & Liabilities — 1.2% 755,613
TOTAL NET ASSETS — 100.0%   $ 61,854,288

See Security Valuation Note.
* Non-income producing security.
Summary of inputs used to value the Fund’s investments as of 12/31/2020 are as follows (See Security Valuation Note):
ASSETS TABLE
Description Total
Market
Value at
12/31/2020
Level 1
Quoted
Price
Level 2
Significant
Observable
Input
Level 3
Significant
Unobservable
Input
Affiliated Equity Funds $ 12,160,605 $ 12,160,605 $— $—
Affiliated Fixed Income Funds 46,412,254 46,412,254
Affiliated International Equity Funds 1,836,802 1,836,802
Short-Term Investments 689,014 689,014
Total Investments $ 61,098,675 $ 61,098,675 $ $
It is the Fund's practice to recognize transfers into and transfers out of Level 3 at the fair value hierarchy as of the beginning of period. The Fund did not have any transfers into and transfers out of Level 3 fair value hierarchy during the reporting period.
The accompanying notes are an integral part of these financial statements.
 
173


Penn Series Funds, Inc.
Statements of Assets and Liabilities
December 31, 2020

  Money
Market
Fund
  Limited
Maturity Bond
Fund
  Quality
Bond
Fund
  High Yield
Bond
Fund
ASSETS:              
Investments at value

$ 160,352,431   $ 254,531,803   $ 474,770,004   $ 162,625,660
Cash

      284,713
Initial margin held by broker for open futures

  336,503   833,914   232,264
Foreign currency at value

      115,750
Interest and dividends receivable

113,986   1,250,088   2,542,175   2,107,828
Receivable for investment securities sold

      701,750
Receivable for capital stock sold

  1,881,542   6,702,451   2,536,215
Futures variation margin receivable

  24,516   106,950  
Other assets

115,476   6,975   13,013   4,199
Total Assets

160,581,893   258,031,427   484,968,507   168,608,379
LIABILITIES:              
Payable for investment securities purchased

  2,828,782     1,043,000
Payable for capital stock redeemed

  110,047   115,585   21,734
Futures variation margin payable

      16,126
Payable to investment adviser (See Note 3)

44,073   98,513   177,541   62,208
Payable to the administrator (See Note 3)

11,608   19,346   35,502   11,682
Other liabilities

59,046   96,866   165,713   62,174
Total Liabilities

114,727   3,153,554   494,341   1,216,924
NET ASSETS

$160,467,166   $254,877,873   $484,474,166   $167,391,455
Investments at cost

$ 160,352,431   $ 255,093,528   $ 453,894,202   $ 153,378,867
Foreign currency at cost

$   $   $   $ 112,601
COMPONENTS OF NET ASSETS:              
Paid-in capital

$ 160,464,042   $ 255,439,600   $ 463,608,858   $ 164,721,287
Total distributable earnings (loss)

3,124   (561,727)   20,865,308   2,670,168
NET ASSETS

$160,467,166   $254,877,873   $484,474,166   $167,391,455
 
Shares outstanding, $0.10 par value, 500 million shares authorized

160,451,522            
Shares outstanding, $0.10 par value, 250 million shares authorized

        27,903,037   10,446,240
Shares outstanding, $0.0001 par value, 250 million shares authorized

    19,126,971        
NET ASSET VALUE, OFFERING AND

REDEMPTION PRICE PER SHARE

$ 1.00   $ 13.33   $ 17.36   $ 16.02
    
The accompanying notes are an integral part of these financial statements.
174


Penn Series Funds, Inc.
Statements of Assets and Liabilities
December 31, 2020

  Flexibly
Managed
Fund
  Balanced
Fund
  Large
Growth Stock
Fund
  Large Cap
Growth
Fund
ASSETS:              
Investments of affiliated issuers at value

$   $ 83,551,140   $   $
Investments of unaffiliated issuers at value

4,956,797,270   337,817   404,917,743   68,336,328
Cash

78,759       500
Interest and dividends receivable

8,047,288     35,207   22,189
Tax reclaims receivable

142,814     6,571   30,028
Receivable for investment securities sold

2,938,085   9,071   192,869  
Receivable for capital stock sold

2,941,312   481,769   1,107,075   226,425
Other assets

123,673   2,262   10,423   1,783
Total Assets

4,971,069,201   84,382,059   406,269,888   68,617,253
LIABILITIES:              
Cash overdraft

    14  
Written options at value

57,303,523      
Payable for investment securities purchased

22,695,332     13,754  
Payable for capital stock redeemed

38,340   300   3,362   9,139
Payable to investment adviser (See Note 3)

2,811,277     239,690   31,329
Payable to the administrator (See Note 3)

354,003   6,177   29,391   4,934
Other liabilities

1,511,349   27,852   196,963   35,826
Total Liabilities

84,713,824   34,329   483,174   81,228
NET ASSETS

$4,886,355,377   $84,347,730   $405,786,714   $68,536,025
Investments of affiliated issuers at cost

$   $ 50,351,249   $   $
Investments of unaffiliated issuers at cost

$ 4,108,693,309   $ 337,817   $ 217,601,127   $ 42,798,445
Written options, premiums received

$ (30,759,176)   $   $   $
COMPONENTS OF NET ASSETS:              
Paid-in capital

$ 4,077,831,017   $ 51,362,091   $ 219,430,256   $ 43,055,716
Total distributable earnings (loss)

808,524,360   32,985,639   186,356,458   25,480,309
NET ASSETS

$4,886,355,377   $84,347,730   $405,786,714   $68,536,025
 
Shares outstanding, $0.10 par value, 250 million shares authorized

63,361,573       5,685,255    
Shares outstanding, $0.0001 par value, 250 million shares authorized

    3,093,041       2,242,964
NET ASSET VALUE, OFFERING AND

REDEMPTION PRICE PER SHARE

$ 77.12   $ 27.27   $ 71.38   $ 30.56
    
The accompanying notes are an integral part of these financial statements.
175


Penn Series Funds, Inc.
Statements of Assets and Liabilities
December 31, 2020

  Large Core
Growth
Fund
  Large Cap
Value
Fund
  Large Core
Value
Fund
  Index 500
Fund
ASSETS:              
Investments at value

$ 222,982,373   $ 178,813,942   $ 179,523,159   $ 594,381,027
Cash

  37,214    
Initial margin held by broker for open futures

      385,000
Foreign currency at value

2,121      
Interest and dividends receivable

13,059   151,937   272,045   438,041
Tax reclaims receivable

17,485     18,912  
Receivable for investment securities sold

1,316,211      
Receivable for capital stock sold

      1,032,894
Futures variation margin receivable

      43,050
Other assets

5,239   4,441   4,563   14,987
Total Assets

224,336,488   179,007,534   179,818,679   596,294,999
LIABILITIES:              
Payable for investment securities purchased

1,664,072      
Payable for capital stock redeemed

435,469   1,014,868   678,193   51,539
Payable to investment adviser (See Note 3)

112,719   101,219   101,799   63,382
Payable to the administrator (See Note 3)

15,718   12,839   13,140   42,696
Other liabilities

80,497   67,621   66,700   204,472
Total Liabilities

2,308,475   1,196,547   859,832   362,089
NET ASSETS

$222,028,013   $177,810,987   $178,958,847   $595,932,910
Investments at cost

$ 146,932,264   $ 149,135,778   $ 153,020,703   $ 294,108,668
Foreign currency at cost

$ 1,619   $   $   $
COMPONENTS OF NET ASSETS:              
Paid-in capital

$ 147,337,853   $ 154,597,232   $ 155,422,483   $ 303,627,475
Total distributable earnings (loss)

74,690,160   23,213,755   23,536,364   292,305,435
NET ASSETS

$222,028,013   $177,810,987   $178,958,847   $595,932,910
 
Shares outstanding, $0.10 par value, 250 million shares authorized

    5,366,000        
Shares outstanding, $0.0001 par value, 250 million shares authorized

4,435,819       7,720,657   18,446,090
NET ASSET VALUE, OFFERING AND

REDEMPTION PRICE PER SHARE

$ 50.05   $ 33.14   $ 23.18   $ 32.31
    
The accompanying notes are an integral part of these financial statements.
176


Penn Series Funds, Inc.
Statements of Assets and Liabilities
December 31, 2020

  Mid Cap
Growth
Fund
  Mid Cap
Value
Fund
  Mid Core
Value
Fund
  SMID Cap
Growth
Fund
ASSETS:              
Investments at value

$ 199,009,282   $ 95,323,183   $ 93,955,877   $ 97,348,512
Cash

    500  
Interest and dividends receivable

19,922   152,935   163,352   5,376
Tax reclaims receivable

    22,405  
Receivable for investment securities sold

  149,998   280,514   512,637
Net unrealized appreciation of forward foreign currency contracts

    9,241  
Other assets

4,696   2,319   2,391   2,189
Total Assets

199,033,900   95,628,435   94,434,280   97,868,714
LIABILITIES:              
Written options at value

31,903      
Foreign currency overdraft

    17  
Payable for investment securities purchased

51,846     68,309   456,164
Payable for capital stock redeemed

1,756,466   778,338   109,479   1,293,300
Payable to investment adviser (See Note 3)

116,264   44,049   55,562   60,764
Payable to the administrator (See Note 3)

13,970   6,844   6,938   6,719
Net unrealized depreciation of forward foreign currency contracts

    57,919  
Other liabilities

71,156   37,321   59,243   41,957
Total Liabilities

2,041,605   866,552   357,467   1,858,904
NET ASSETS

$196,992,295   $94,761,883   $94,076,813   $96,009,810
Investments at cost

$ 104,522,038   $ 75,974,038   $ 81,699,580   $ 69,047,140
Written options, premiums received

$ (132,247)   $   $   $
Foreign currency at cost

$   $   $ 3   $
COMPONENTS OF NET ASSETS:              
Paid-in capital

$ 102,738,958   $ 95,913,816   $ 83,331,863   $ 67,843,076
Total distributable earnings (loss)

94,253,337   (1,151,933)   10,744,950   28,166,734
NET ASSETS

$196,992,295   $94,761,883   $94,076,813   $96,009,810
 
Shares outstanding, $0.0001 par value, 250 million shares authorized

5,024,179   4,085,265   3,436,694   1,832,894
NET ASSET VALUE, OFFERING AND

REDEMPTION PRICE PER SHARE

$ 39.21   $ 23.20   $ 27.37   $ 52.38
    
The accompanying notes are an integral part of these financial statements.
177


Penn Series Funds, Inc.
Statements of Assets and Liabilities
December 31, 2020

  SMID Cap
Value
Fund
  Small Cap
Growth
Fund
  Small Cap
Value
Fund
  Small Cap
Index
Fund
ASSETS:              
Investments at value

$ 59,191,487   $ 145,694,907   $ 185,933,676   $ 78,285,899
Initial margin held by broker for open futures

      84,000
Foreign currency at value

  2,085    
Interest and dividends receivable

64,250   20,508   268,703   67,931
Tax reclaims receivable

  8,658   685  
Receivable for investment securities sold

162,639   15,240   510,607   344,806
Other assets

1,479   3,254   4,240   1,745
Total Assets

59,419,855   145,744,652   186,717,911   78,784,381
LIABILITIES:              
Payable for investment securities purchased

89,205     199,203  
Payable for capital stock redeemed

1,580,662   2,994,441   6,392,115   2,846,703
Futures variation margin payable

      1,190
Payable to investment adviser (See Note 3)

42,332   88,351   114,075   23,357
Payable to the administrator (See Note 3)

4,169   9,978   12,790   5,389
Other liabilities

31,752   56,907   87,573   55,672
Total Liabilities

1,748,120   3,149,677   6,805,756   2,932,311
NET ASSETS

$57,671,735   $142,594,975   $179,912,155   $75,852,070
Investments at cost

$ 51,073,870   $ 79,808,547   $ 151,727,814   $ 58,061,184
Foreign currency at cost

$   $ 2,075   $   $
COMPONENTS OF NET ASSETS:              
Paid-in capital

$ 59,241,755   $ 76,791,681   $ 150,514,414   $ 56,083,926
Total distributable earnings (loss)

(1,570,020)   65,803,294   29,397,741   19,768,144
NET ASSETS

$57,671,735   $142,594,975   $179,912,155   $75,852,070
 
Shares outstanding, $0.10 par value, 500 million shares authorized

2,004,144       4,470,569    
Shares outstanding, $0.0001 par value, 250 million shares authorized

    2,275,520       2,520,281
NET ASSET VALUE, OFFERING AND

REDEMPTION PRICE PER SHARE

$ 28.78   $ 62.66   $ 40.24   $ 30.10
    
The accompanying notes are an integral part of these financial statements.
178


Penn Series Funds, Inc.
Statements of Assets and Liabilities
December 31, 2020

  Developed
International
Index Fund
  International
Equity Fund
  Emerging
Markets
Equity Fund
  Real Estate
Securities
Fund
ASSETS:              
Investments at value

$ 108,309,777   $ 333,068,831   $ 147,284,018   $118,990,447
Initial margin held by broker for open futures

182,160      
Foreign currency at value

541,391      
Interest and dividends receivable

88,695   234,363   159,368   481,267
Tax reclaims receivable

485,946   1,143,278   73,028  
Receivable for investment securities sold

110,315       448,048
Receivable for capital stock sold

  2,952,733     1,585,674
Other assets

2,784   8,746   3,718   3,156
Total Assets

109,721,068   337,407,951   147,520,132   121,508,592
LIABILITIES:              
Foreign currency overdraft

  1   73  
Payable for investment securities purchased

    76,925   305,986
Payable for capital stock redeemed

288,482   32,754   706,784   11,439
Futures variation margin payable

19,714      
Payable to investment adviser (See Note 3)

27,605   212,769   106,692   69,698
Payable to the administrator (See Note 3)

7,819   24,144   10,534   8,762
Deferred Indian capital gains tax

  715,201   1,146,317  
Other liabilities

81,829   149,341   137,378   49,496
Total Liabilities

425,449   1,134,210   2,184,703   445,381
NET ASSETS

$109,295,619   $336,273,741   $145,335,429   $ 121,063,211
Investments at cost

$ 77,527,540   $ 254,146,425   $ 108,192,964   $ 105,709,813
Foreign currency at cost

$ 536,325   $ (1)   $ (65)   $
COMPONENTS OF NET ASSETS:              
Paid-in capital

$ 80,202,766   $ 258,549,328   $ 108,323,127   $ 112,080,117
Total distributable earnings (loss)

29,092,853   77,724,413   37,012,302   8,983,094
NET ASSETS

$109,295,619   $336,273,741   $145,335,429   $ 121,063,211
 
Shares outstanding, $0.10 par value, 250 million shares authorized

    8,618,847        
Shares outstanding, $0.0001 par value, 250 million shares authorized

6,857,165       9,736,629   4,590,433
NET ASSET VALUE, OFFERING AND

REDEMPTION PRICE PER SHARE

$ 15.94   $ 39.02   $ 14.93   $ 26.37
    
The accompanying notes are an integral part of these financial statements.
179


Penn Series Funds, Inc.
Statements of Assets and Liabilities
December 31, 2020

  Aggressive
Allocation
Fund
  Moderately
Aggressive
Allocation
Fund
  Moderate
Allocation
Fund
  Moderately
Conservative
Allocation
Fund
ASSETS:              
Investments of affiliated issuers at value

$ 69,741,214   $ 226,001,726   $ 284,004,618   $ 93,570,566
Investments of unaffiliated issuers at value

402,669   971,404   1,142,699   765,294
Interest and dividends receivable

    1  
Receivable for investment securities sold

4,190   276,599   22,024   13,722
Receivable for capital stock sold

    869,638   180,599
Other assets

1,793   5,807   7,590   2,476
Total Assets

70,149,866   227,255,536   286,046,570   94,532,657
LIABILITIES:              
Payable for capital stock redeemed

40,510   63,175   1   7
Payable to investment adviser (See Note 3)

7,092   22,628   28,088   9,554
Payable to the administrator (See Note 3)

5,103   16,394   20,949   6,971
Other liabilities

23,596   69,095   87,822   31,016
Total Liabilities

76,301   171,292   136,860   47,548
NET ASSETS

$70,073,565   $227,084,244   $285,909,710   $94,485,109
Investments of affiliated issuers at cost

$ 52,831,715   $ 166,984,880   $ 213,032,600   $ 76,112,509
Investments of unaffiliated issuers at cost

$ 402,669   $ 971,404   $ 1,142,699   $ 765,294
COMPONENTS OF NET ASSETS:              
Paid-in capital

$ 53,241,716   $ 168,278,069   $ 215,108,399   $ 77,087,149
Total distributable earnings (loss)

16,831,849   58,806,175   70,801,311   17,397,960
NET ASSETS

$70,073,565   $227,084,244   $285,909,710   $94,485,109
 
Shares outstanding, $0.0001 par value, 250 million shares authorized

2,996,369   9,408,769   13,320,699   4,974,862
NET ASSET VALUE, OFFERING AND

REDEMPTION PRICE PER SHARE

$ 23.39   $ 24.14   $ 21.46   $ 18.99
    
The accompanying notes are an integral part of these financial statements.
180


Penn Series Funds, Inc.
Statements of Assets and Liabilities
December 31, 2020

  Conservative
Allocation
Fund
ASSETS:  
Investments of affiliated issuers at value

$ 60,409,661
Investments of unaffiliated issuers at value

689,014
Receivable for investment securities sold

229,990
Receivable for capital stock sold

556,035
Other assets

1,598
Total Assets

61,886,298
LIABILITIES:  
Payable for capital stock redeemed

1
Payable to investment adviser (See Note 3)

6,204
Payable to the administrator (See Note 3)

4,516
Other liabilities

21,289
Total Liabilities

32,010
NET ASSETS

$61,854,288
Investments of affiliated issuers at cost

$ 52,598,160
Investments of unaffiliated issuers at cost

$ 689,014
COMPONENTS OF NET ASSETS:  
Paid-in capital

$ 54,068,147
Total distributable earnings (loss)

7,786,141
NET ASSETS

$61,854,288
 
Shares outstanding, $0.0001 par value, 250 million shares authorized

3,725,738
NET ASSET VALUE, OFFERING AND

REDEMPTION PRICE PER SHARE

$ 16.60
The accompanying notes are an integral part of these financial statements.
181


Penn Series Funds, Inc.
Statements of Operations
For The Year Ended December 31, 2020

  Money
Market
Fund
  Limited
Maturity Bond
Fund
  Quality
Bond
Fund
  High Yield
Bond
Fund
INVESTMENT INCOME:              
Dividends

$ 46,257   $ 57,600   $ 103,441   $ 300,102
Interest

611,532   6,204,197   12,447,825   7,907,817
Foreign taxes withheld

  (2,651)    
Total Investment Income

657,789   6,259,146   12,551,266   8,207,919
EXPENSES:              
Investment advisory fees (See Note 3)

445,813   1,116,517   2,006,803   692,277
Shareholder servicing fees (See Note 3)

121,585   220,197   406,458   135,445
Administration fees (See Note 3)

40,528   73,399   135,486   45,148
Accounting fees (See Note 3)

87,547   142,331   215,486   95,248
Directors’ fees and expenses

8,086   14,868   27,462   9,211
Custodian fees and expenses

9,684   17,014   31,526   10,540
Pricing fees

8,064   25,561   25,053   21,554
Professional fees

13,496   24,619   45,053   14,972
Printing fees

8,018   14,196   25,500   8,555
Other expenses

37,569   60,803   87,857   51,955
Total Expenses

780,390   1,709,505   3,006,684   1,084,905
Less: Waivers and reimbursement from administrator (See Note 3)

(108,890)      
Less: Waivers and reimbursement from advisor (See Note 3)

(294,197)      
Net Expenses

377,303   1,709,505   3,006,684   1,084,905
Net Investment Income (Loss)

280,486   4,549,641   9,544,582   7,123,014
NET REALIZED AND UNREALIZED GAIN (LOSS):              
Net realized gain (loss) on:              
Investments

  1,023,689   6,070,442   795,032
Futures contracts

  3,047,932   8,082,117  
Net realized gain (loss)

  4,071,621   14,152,559   795,032
Net change in unrealized appreciation (depreciation) of:              
Investments

  (287,169)   10,912,415   2,322,739
Futures contracts

  394,622   1,495,166   (13,246)
Foreign currencies

      2,017
Net change in unrealized appreciation (depreciation)

  107,453   12,407,581   2,311,510
Net Realized and Unrealized Gain (Loss)

  4,179,074   26,560,140   3,106,542
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$280,486   $ 8,728,715   $ 36,104,722   $10,229,556
    
The accompanying notes are an integral part of these financial statements.
182


Penn Series Funds, Inc.
Statements of Operations
For The Year Ended December 31, 2020

  Flexibly
Managed
Fund
  Balanced
Fund
  Large
Growth Stock
Fund
  Large Cap
Growth
Fund
INVESTMENT INCOME:              
Dividends

$ 42,954,471   $ 150   $ 1,610,412   $ 666,839
Interest

42,768,261       61
Foreign taxes withheld

(194,476)     (15,206)   (10,023)
Total Investment Income

85,528,256   150   1,595,206   656,877
EXPENSES:              
Investment advisory fees (See Note 3)

30,311,983     2,487,107   339,437
Shareholder servicing fees (See Note 3)

3,948,962   71,188   315,943   55,544
Administration fees (See Note 3)

1,316,321   23,729   105,314   18,515
Accounting fees (See Note 3)

1,017,547   12,000   184,764   43,201
Directors’ fees and expenses

266,841   4,851   21,224   3,771
Custodian fees and expenses

317,095   5,459   25,759   4,948
Pricing fees

17,048   2,770   8,323   5,189
Professional fees

446,230   7,351   62,630   6,793
Printing fees

244,395   4,696   19,874   3,764
Other expenses

692,250   26,529   117,254   61,243
Total Expenses

38,578,672   158,573   3,348,192   542,405
Net Investment Income (Loss)

46,949,584   (158,423)   (1,752,986)   114,472
NET REALIZED AND UNREALIZED GAIN (LOSS):              
Net realized gain (loss) on:              
Affiliated investments

  11,783,833    
Unaffiliated investments

560,926,419     34,810,503   8,620,406
Written options

(1,515,684)      
Foreign currencies

28,910     177   (1,517)
Forward foreign currency contracts

(1,142)     9  
Net realized gain (loss)

559,438,503   11,783,833   34,810,689   8,618,889
Net change in unrealized appreciation (depreciation) of:              
Affiliated investments

  (530,549)    
Unaffiliated Investments

138,902,378     81,002,598   4,191,160
Written options

(3,498,148)      
Foreign currencies

(4,832)     571   2,280
Net change in unrealized appreciation (depreciation)

135,399,398   (530,549)   81,003,169   4,193,440
Net Realized and Unrealized Gain (Loss)

694,837,901   11,253,284   115,813,858   12,812,329
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$ 741,787,485   $11,094,861   $114,060,872   $12,926,801
    
The accompanying notes are an integral part of these financial statements.
183


Penn Series Funds, Inc.
Statements of Operations
For The Year Ended December 31, 2020

  Large Core
Growth
Fund
  Large Cap
Value
Fund
  Large Core
Value
Fund
  Index 500
Fund
INVESTMENT INCOME:              
Dividends

$ 433,469   $ 3,594,023   $ 4,108,510   $ 9,107,315
Foreign taxes withheld

(621)   (71,381)   (27,354)  
Total Investment Income

432,848   3,522,642   4,081,156   9,107,315
EXPENSES:              
Investment advisory fees (See Note 3)

1,013,599   1,109,824   1,120,361   654,383
Shareholder servicing fees (See Note 3)

152,040   149,536   150,998   457,037
Administration fees (See Note 3)

50,680   49,845   50,332   152,346
Accounting fees (See Note 3)

104,467   103,075   103,888   232,346
Directors’ fees and expenses

9,981   10,252   10,355   30,879
Custodian fees and expenses

11,517   11,547   11,504   34,503
Pricing fees

3,645   6,962   4,045   12,005
Professional fees

17,518   16,755   17,088   52,744
Printing fees

9,805   9,394   9,481   28,565
Other expenses

66,017   58,683   54,200   155,788
Total Expenses

1,439,269   1,525,873   1,532,252   1,810,596
Net Investment Income (Loss)

(1,006,421)   1,996,769   2,548,904   7,296,719
NET REALIZED AND UNREALIZED GAIN (LOSS):              
Net realized gain (loss) on:              
Investments

44,657,176   (5,261,376)   (411,727)   65,532,660
Futures contracts

      1,474,099
Foreign currencies

1,558      
Net realized gain (loss)

44,658,734   (5,261,376)   (411,727)   67,006,759
Net change in unrealized appreciation (depreciation) of:              
Investments

53,222,934   6,098,668   2,010,840   22,195,648
Futures contracts

      18,434
Foreign currencies

1,517      
Net change in unrealized appreciation (depreciation)

53,224,451   6,098,668   2,010,840   22,214,082
Net Realized and Unrealized Gain (Loss)

97,883,185   837,292   1,599,113   89,220,841
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$96,876,764   $ 2,834,061   $ 4,148,017   $ 96,517,560
    
The accompanying notes are an integral part of these financial statements.
184


Penn Series Funds, Inc.
Statements of Operations
For The Year Ended December 31, 2020

  Mid Cap
Growth
Fund
  Mid Cap
Value
Fund
  Mid Core
Value
Fund
  SMID Cap
Growth
Fund
INVESTMENT INCOME:              
Dividends

$ 917,690   $ 1,744,234   $ 2,215,079   $ 303,899
Foreign taxes withheld

  (6,754)   (25,238)  
Total Investment Income

917,690   1,737,480   2,189,841   303,899
EXPENSES:              
Investment advisory fees (See Note 3)

1,126,694   489,597   603,915   576,228
Shareholder servicing fees (See Note 3)

144,861   80,116   78,772   69,147
Administration fees (See Note 3)

48,287   26,705   26,257   23,049
Accounting fees (See Note 3)

100,478   61,869   61,267   53,781
Directors’ fees and expenses

9,644   5,552   5,394   4,556
Custodian fees and expenses

11,028   6,003   8,311   5,187
Pricing fees

5,230   5,005   6,568   4,758
Professional fees

16,543   9,268   9,775   8,268
Printing fees

9,450   4,981   5,253   4,659
Other expenses

61,203   42,433   105,094   56,241
Total Expenses

1,533,418   731,529   910,606   805,874
Net Investment Income (Loss)

(615,728)   1,005,951   1,279,235   (501,975)
NET REALIZED AND UNREALIZED GAIN (LOSS):              
Net realized gain (loss) on:              
Investments

23,575,208   (17,957,467)   349,931   18,619,401
Written options

449,476      
Purchased options

(731,333)      
Foreign currencies

(3,109)     (1,625)  
Forward foreign currency contracts

    (314,752)  
Net realized gain (loss)

23,290,242   (17,957,467)   33,554   18,619,401
Net change in unrealized appreciation (depreciation) of:              
Investments

46,197,017   3,457,789   648,787   16,408,442
Written options

100,344      
Purchased options

(322,485)      
Foreign currencies

(123)     876  
Forward foreign currency contracts

    23,910  
Net change in unrealized appreciation (depreciation)

45,974,753   3,457,789   673,573   16,408,442
Net Realized and Unrealized Gain (Loss)

69,264,995   (14,499,678)   707,127   35,027,843
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$ 68,649,267   $ (13,493,727)   $1,986,362   $34,525,868
    
The accompanying notes are an integral part of these financial statements.
185


Penn Series Funds, Inc.
Statements of Operations
For The Year Ended December 31, 2020

  SMID Cap
Value
Fund
  Small Cap
Growth
Fund
  Small Cap
Value
Fund
  Small Cap
Index
Fund
INVESTMENT INCOME:              
Dividends

$ 1,152,313   $ 470,985   $ 2,593,211   $ 740,972
Foreign taxes withheld

(5,494)   (1,774)   (12,614)   (1,966)
Total Investment Income

1,146,819   469,211   2,580,597   739,006
EXPENSES:              
Investment advisory fees (See Note 3)

496,498   848,159   1,168,280   189,751
Shareholder servicing fees (See Note 3)

53,196   104,228   145,386   56,925
Administration fees (See Note 3)

17,732   34,743   48,462   18,975
Accounting fees (See Note 3)

41,375   77,605   100,770   44,275
Directors’ fees and expenses

3,700   6,956   9,979   3,832
Custodian fees and expenses

4,198   8,410   11,018   4,263
Pricing fees

4,697   7,110   8,295   34,115
Professional fees

6,377   12,614   17,004   10,686
Printing fees

3,477   6,795   9,068   3,816
Recaptured advisory fee (See Note 3)

    1,941   5,369
Other expenses

60,419   62,877   123,562   101,504
Total Expenses

691,669   1,169,497   1,643,765   473,511
Less: Waivers and reimbursement from advisor (See Note 3)

    (1,941)   (5,459)
Net Expenses

691,669   1,169,497   1,641,824   468,052
Net Investment Income (Loss)

455,150   (700,286)   938,773   270,954
NET REALIZED AND UNREALIZED GAIN (LOSS):              
Net realized gain (loss) on:              
Investments

(7,927,747)   7,982,418   (3,944,641)   7,714,545
Futures contracts

      217,384
Foreign currencies

  (623)    
Net realized gain (loss)

(7,927,747)   7,981,795   (3,944,641)   7,931,929
Net change in unrealized appreciation (depreciation) of:              
Investments

3,067,672   29,384,224   5,454,924   5,316,487
Futures contracts

      25,269
Foreign currencies

  680    
Net change in unrealized appreciation (depreciation)

3,067,672   29,384,904   5,454,924   5,341,756
Net Realized and Unrealized Gain (Loss)

(4,860,075)   37,366,699   1,510,283   13,273,685
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$(4,404,925)   $ 36,666,413   $2,449,056   $13,544,639
    
The accompanying notes are an integral part of these financial statements.
186


Penn Series Funds, Inc.
Statements of Operations
For The Year Ended December 31, 2020

  Developed
International
Index Fund
  International
Equity Fund
  Emerging
Markets
Equity Fund
  Real Estate
Securities
Fund
INVESTMENT INCOME:              
Dividends

$ 2,489,872   $ 3,094,959   $ 1,674,528   $ 2,950,929
Foreign taxes withheld

(218,623)   (291,279)   (196,705)  
Total Investment Income

2,271,249   2,803,680   1,477,823   2,950,929
EXPENSES:              
Investment advisory fees (See Note 3)

298,644   2,402,324   1,160,541   808,124
Shareholder servicing fees (See Note 3)

89,593   274,393   117,866   103,902
Administration fees (See Note 3)

29,865   91,464   39,289   34,634
Accounting fees (See Note 3)

79,072   202,929   98,575   77,626
Directors’ fees and expenses

6,104   18,722   8,050   7,135
Custodian fees and expenses

23,755   71,781   55,795   7,929
Pricing fees

95,532   9,496   16,503   4,375
Professional fees

48,936   39,975   48,503   11,472
Printing fees

5,825   17,039   7,446   6,641
Other expenses

213,105   111,600   173,323   55,077
Total Expenses

890,431   3,239,723   1,725,891   1,116,915
Net Investment Income (Loss)

1,380,818   (436,043)   (248,068)   1,834,014
NET REALIZED AND UNREALIZED GAIN (LOSS):              
Net realized gain (loss) on:              
Investments

1,306,694   29,529,623   1,762,429   (4,286,440)
Futures contracts

1,179,996      
Foreign currencies

64,340   (863,616)   (350,902)  
Forward foreign currency contracts

    (232,394)  
Net realized gain (loss)

2,551,030   28,666,007   1,179,133   (4,286,440)
Net change in unrealized appreciation (depreciation) of:              
Investments

4,200,905   15,186,281   12,850,297   (2,339,070)
Futures contracts

27,248      
Foreign currencies

41,834   98,090   5,379  
Forward foreign currency contracts

    94,768  
Net change in unrealized appreciation (depreciation)

4,269,987   15,284,371   12,950,444   (2,339,070)
Net Realized and Unrealized Gain (Loss)

6,821,017   43,950,378   14,129,577   (6,625,510)
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$ 8,201,835   $ 43,514,335   $ 13,881,509   $ (4,791,496)
    
The accompanying notes are an integral part of these financial statements.
187


Penn Series Funds, Inc.
Statements of Operations
For The Year Ended December 31, 2020

  Aggressive
Allocation
Fund
  Moderately
Aggressive
Allocation
Fund
  Moderate
Allocation
Fund
  Moderately
Conservative
Allocation
Fund
INVESTMENT INCOME:              
Dividends

$ 949   $ 5,432   $ 73   $ 2,227
Total Investment Income

949   5,432   73   2,227
EXPENSES:              
Investment advisory fees (See Note 3)

77,650   248,653   320,237   107,695
Shareholder servicing fees (See Note 3)

58,237   187,373   245,648   80,771
Administration fees (See Note 3)

19,412   62,458   81,883   26,924
Accounting fees (See Note 3)

12,000   20,819   27,294   12,000
Directors’ fees and expenses

3,973   12,787   16,785   5,506
Custodian fees and expenses

4,460   14,280   18,880   6,186
Pricing fees

2,770   2,770   2,770   2,770
Professional fees

6,013   19,266   25,203   8,337
Printing fees

3,895   11,735   15,355   5,269
Other expenses

23,074   43,623   59,755   27,592
Total Expenses

211,484   623,764   813,810   283,050
Net Investment Income (Loss)

(210,535)   (618,332)   (813,737)   (280,823)
NET REALIZED AND UNREALIZED GAIN (LOSS):              
Net realized gain (loss) on affiliated investment transactions

4,861,836   17,087,542   25,510,932   6,352,159
Net change in unrealized appreciation (depreciation) of affiliated investments

1,151,393   2,135,312   (149,120)   708,025
Net Realized and Unrealized Gain (Loss)

6,013,229   19,222,854   25,361,812   7,060,184
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$5,802,694   $18,604,522   $24,548,075   $ 6,779,361
  Conservative
Allocation
Fund
INVESTMENT INCOME:  
Dividends

$ 3,981
Total Investment Income

3,981
EXPENSES:  
Investment advisory fees (See Note 3)

69,557
Shareholder servicing fees (See Note 3)

52,168
Administration fees (See Note 3)

17,389
Accounting fees (See Note 3)

12,000
Directors’ fees and expenses

3,543
Custodian fees and expenses

3,998
Pricing fees

2,770
Professional fees

5,358
Printing fees

3,527
Other expenses

23,345
Total Expenses

193,655
Net Investment Income (Loss)

(189,674)
NET REALIZED AND UNREALIZED GAIN (LOSS):  
Net realized gain (loss) on affiliated investment transactions

3,154,886
Net change in unrealized appreciation (depreciation) of affiliated investments

1,027,216
Net Realized and Unrealized Gain (Loss)

4,182,102
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$ 3,992,428
The accompanying notes are an integral part of these financial statements.
188


Penn Series Funds, Inc.
Statements of Changes in Net Assets

  Money Market Fund   Limited Maturity Bond Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ 280,486   $ 1,632,266   $ 4,549,641   $ 6,909,846
Net realized gain (loss)

    4,071,621   2,024,029
Net change in unrealized appreciation (depreciation)

    107,453   2,365,005
Net Increase (Decrease) in Net Assets Resulting from Operations

280,486   1,632,266   8,728,715   11,298,880
Distributions from:              
Distributable earnings

(277,283)   (1,635,471)    
Total Distributions

(277,283)   (1,635,471)    
Capital Share Transactions (1):              
Shares issued

151,898,109   102,754,754   59,690,500   41,227,575
Shares issued in lieu of cash distributions

280,485   1,631,645    
Shares redeemed

(104,653,034)   (102,377,868)   (58,538,852)   (40,744,979)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

47,525,560   2,008,531   1,151,648   482,596
Total Increase (Decrease)

47,528,763   2,005,326   9,880,363   11,781,476
Net Assets:              
Beginning of period

112,938,403   110,933,077   244,997,510   233,216,034
End of period

$ 160,467,166   $ 112,938,403   $ 254,877,873   $ 244,997,510
(1) Shares Issued and Redeemed:              
Shares issued

151,898,109   102,754,754   4,573,900   3,260,056
Shares issued in lieu of cash distributions

280,485   1,631,645    
Shares redeemed

(104,653,034)   (102,377,868)   (4,505,075)   (3,230,544)
  47,525,560   2,008,531   68,825   29,512
  Quality Bond Fund   High Yield Bond Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ 9,544,582   $ 12,319,847   $ 7,123,014   $ 7,655,189
Net realized gain (loss)

14,152,559   11,235,942   795,032   1,817,953
Net change in unrealized appreciation (depreciation)

12,407,581   13,426,190   2,311,510   13,358,085
Net Increase (Decrease) in Net Assets Resulting from Operations

36,104,722   36,981,979   10,229,556   22,831,227
Capital Share Transactions (1):              
Shares issued

110,626,763   54,795,448   22,749,256   8,900,568
Shares redeemed

(95,991,535)   (67,070,455)   (25,483,846)   (22,159,253)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

14,635,228   (12,275,007)   (2,734,590)   (13,258,685)
Total Increase (Decrease)

50,739,950   24,706,972   7,494,966   9,572,542
Net Assets:              
Beginning of period

433,734,216   409,027,244   159,896,489   150,323,947
End of period

$484,474,166   $ 433,734,216   $ 167,391,455   $159,896,489
(1) Shares Issued and Redeemed:              
Shares issued

6,581,932   3,507,568   1,467,884   630,675
Shares redeemed

(5,773,085)   (4,317,186)   (1,754,814)   (1,565,598)
  808,847   (809,618)   (286,930)   (934,923)
    
The accompanying notes are an integral part of these financial statements.
189


Penn Series Funds, Inc.
Statements of Changes in Net Assets

  Flexibly Managed Fund   Balanced Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ 46,949,584   $ 58,430,843   $ (158,423)   $ (160,806)
Net realized gain (loss)

559,438,503   356,636,729   11,783,833   8,879,420
Net change in unrealized appreciation (depreciation)

135,399,398   481,408,552   (530,549)   6,917,752
Net Increase (Decrease) in Net Assets Resulting from Operations

741,787,485   896,476,124   11,094,861   15,636,366
Capital Share Transactions (1):              
Shares issued

79,440,355   100,104,430   4,125,924   3,067,693
Shares redeemed

(353,137,852)   (276,565,400)   (11,943,412)   (12,465,529)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(273,697,497)   (176,460,970)   (7,817,488)   (9,397,836)
Total Increase (Decrease)

468,089,988   720,015,154   3,277,373   6,238,530
Net Assets:              
Beginning of period

4,418,265,389   3,698,250,235   81,070,357   74,831,827
End of period

$ 4,886,355,377   $ 4,418,265,389   $ 84,347,730   $ 81,070,357
(1) Shares Issued and Redeemed:              
Shares issued

1,197,362   1,693,860   169,657   143,872
Shares redeemed

(5,345,786)   (4,550,970)   (488,438)   (563,517)
  (4,148,424)   (2,857,110)   (318,781)   (419,645)
  Large Growth Stock Fund   Large Cap Growth Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ (1,752,986)   $ (564,698)   $ 114,472   $ 209,589
Net realized gain (loss)

34,810,689   26,571,903   8,618,889   8,061,278
Net change in unrealized appreciation (depreciation)

81,003,169   57,386,573   4,193,440   11,534,935
Net Increase (Decrease) in Net Assets Resulting from Operations

114,060,872   83,393,778   12,926,801   19,805,802
Capital Share Transactions (1):              
Shares issued

16,475,289   10,413,032   4,993,757   4,304,052
Shares redeemed

(56,169,734)   (45,061,044)   (12,603,815)   (14,334,452)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(39,694,445)   (34,648,012)   (7,610,058)   (10,030,400)
Total Increase (Decrease)

74,366,427   48,745,766   5,316,743   9,775,402
Net Assets:              
Beginning of period

331,420,287   282,674,521   63,219,282   53,443,880
End of period

$ 405,786,714   $ 331,420,287   $ 68,536,025   $ 63,219,282
(1) Shares Issued and Redeemed:              
Shares issued

293,328   221,847   203,974   196,608
Shares redeemed

(968,934)   (937,282)   (488,080)   (655,316)
  (675,606)   (715,435)   (284,106)   (458,708)
    
The accompanying notes are an integral part of these financial statements.
190


Penn Series Funds, Inc.
Statements of Changes in Net Assets

  Large Core Growth Fund   Large Cap Value Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ (1,006,421)   $ (350,182)   $ 1,996,769   $ 2,002,810
Net realized gain (loss)

44,658,734   20,107,341   (5,261,376)   2,784,034
Net change in unrealized appreciation (depreciation)

53,224,451   12,135,004   6,098,668   35,272,917
Net Increase (Decrease) in Net Assets Resulting from Operations

96,876,764   31,892,163   2,834,061   40,059,761
Capital Share Transactions (1):              
Shares issued

18,312,376   7,569,487   12,636,650   10,411,716
Shares redeemed

(29,091,470)   (21,895,817)   (33,767,654)   (33,804,138)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(10,779,094)   (14,326,330)   (21,131,004)   (23,392,422)
Total Increase (Decrease)

86,097,670   17,565,833   (18,296,943)   16,667,339
Net Assets:              
Beginning of period

135,930,343   118,364,510   196,107,930   179,440,591
End of period

$ 222,028,013   $ 135,930,343   $ 177,810,987   $ 196,107,930
(1) Shares Issued and Redeemed:              
Shares issued

466,319   284,633   483,571   346,323
Shares redeemed

(796,839)   (800,767)   (1,172,172)   (1,135,383)
  (330,520)   (516,134)   (688,601)   (789,060)
  Large Core Value Fund   Index 500 Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ 2,548,904   $ 2,840,613   $ 7,296,719   $ 7,559,510
Net realized gain (loss)

(411,727)   12,857,757   67,006,759   32,812,999
Net change in unrealized appreciation (depreciation)

2,010,840   33,680,835   22,214,082   83,914,688
Net Increase (Decrease) in Net Assets Resulting from Operations

4,148,017   49,379,205   96,517,560   124,287,197
Capital Share Transactions (1):              
Shares issued

15,417,090   4,504,943   69,328,444   28,584,665
Shares redeemed

(33,565,078)   (36,997,314)   (64,452,708)   (75,196,590)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(18,147,988)   (32,492,371)   4,875,736   (46,611,925)
Total Increase (Decrease)

(13,999,971)   16,886,834   101,393,296   77,675,272
Net Assets:              
Beginning of period

192,958,818   176,071,984   494,539,614   416,864,342
End of period

$ 178,958,847   $ 192,958,818   $ 595,932,910   $ 494,539,614
(1) Shares Issued and Redeemed:              
Shares issued

818,126   220,931   2,685,017   1,159,948
Shares redeemed

(1,641,339)   (1,793,095)   (2,351,038)   (3,057,861)
  (823,213)   (1,572,164)   333,979   (1,897,913)
    
The accompanying notes are an integral part of these financial statements.
191


Penn Series Funds, Inc.
Statements of Changes in Net Assets

  Mid Cap Growth Fund   Mid Cap Value Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ (615,728)   $ (425,441)   $ 1,005,951   $ 1,655,595
Net realized gain (loss)

23,290,242   12,729,767   (17,957,467)   (293,903)
Net change in unrealized appreciation (depreciation)

45,974,753   29,535,951   3,457,789   21,231,600
Net Increase (Decrease) in Net Assets Resulting from Operations

68,649,267   41,840,277   (13,493,727)   22,593,292
Capital Share Transactions (1):              
Shares issued

12,631,402   13,244,827   8,736,702   5,399,945
Shares redeemed

(33,054,226)   (18,821,226)   (17,279,601)   (52,966,132)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(20,422,824)   (5,576,399)   (8,542,899)   (47,566,187)
Total Increase (Decrease)

48,226,443   36,263,878   (22,036,626)   (24,972,895)
Net Assets:              
Beginning of period

148,765,852   112,501,974   116,798,509   141,771,404
End of period

$ 196,992,295   $148,765,852   $ 94,761,883   $ 116,798,509
(1) Shares Issued and Redeemed:              
Shares issued

439,826   551,414   495,206   211,827
Shares redeemed

(1,086,670)   (798,522)   (826,237)   (2,069,575)
  (646,844)   (247,108)   (331,031)   (1,857,748)
  Mid Core Value Fund   SMID Cap Growth Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ 1,279,235   $ 1,232,294   $ (501,975)   $ (413,974)
Net realized gain (loss)

33,554   98,897   18,619,401   8,545,162
Net change in unrealized appreciation (depreciation)

673,573   20,204,150   16,408,442   13,607,296
Net Increase (Decrease) in Net Assets Resulting from Operations

1,986,362   21,535,341   34,525,868   21,738,484
Capital Share Transactions (1):              
Shares issued

10,033,128   14,785,376   11,570,298   7,160,153
Shares redeemed

(17,741,512)   (15,814,012)   (21,047,089)   (17,819,568)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(7,708,384)   (1,028,636)   (9,476,791)   (10,659,415)
Total Increase (Decrease)

(5,722,022)   20,506,705   25,049,077   11,079,069
Net Assets:              
Beginning of period

99,798,835   79,292,130   70,960,733   59,881,664
End of period

$ 94,076,813   $ 99,798,835   $ 96,009,810   $ 70,960,733
(1) Shares Issued and Redeemed:              
Shares issued

468,174   563,979   294,698   229,154
Shares redeemed

(736,216)   (650,236)   (525,103)   (568,231)
  (268,042)   (86,257)   (230,405)   (339,077)
    
The accompanying notes are an integral part of these financial statements.
192


Penn Series Funds, Inc.
Statements of Changes in Net Assets

  SMID Cap Value Fund   Small Cap Growth Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ 455,150   $ 563,622   $ (700,286)   $ (433,741)
Net realized gain (loss)

(7,927,747)   2,710,595   7,981,795   5,700,133
Net change in unrealized appreciation (depreciation)

3,067,672   12,146,243   29,384,904   20,647,074
Net Increase (Decrease) in Net Assets Resulting from Operations

(4,404,925)   15,420,460   36,666,413   25,913,466
Capital Share Transactions (1):              
Shares issued

4,828,741   4,642,070   8,523,305   14,321,866
Shares redeemed

(28,076,299)   (15,656,929)   (20,838,333)   (15,234,785)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(23,247,558)   (11,014,859)   (12,315,028)   (912,919)
Total Increase (Decrease)

(27,652,483)   4,405,601   24,351,385   25,000,547
Net Assets:              
Beginning of period

85,324,218   80,918,617   118,243,590   93,243,043
End of period

$ 57,671,735   $ 85,324,218   $142,594,975   $ 118,243,590
(1) Shares Issued and Redeemed:              
Shares issued

240,997   173,738   205,798   316,631
Shares redeemed

(1,244,791)   (584,936)   (422,367)   (344,444)
  (1,003,794)   (411,198)   (216,569)   (27,813)
  Small Cap Value Fund   Small Cap Index Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ 938,773   $ 1,413,710   $ 270,954   $ 389,489
Net realized gain (loss)

(3,944,641)   15,904,051   7,931,929   9,640,730
Net change in unrealized appreciation (depreciation)

5,454,924   27,741,010   5,341,756   5,945,896
Net Increase (Decrease) in Net Assets Resulting from Operations

2,449,056   45,058,771   13,544,639   15,976,115
Capital Share Transactions (1):              
Shares issued

12,924,725   4,964,640   5,753,101   4,183,263
Shares redeemed

(40,510,317)   (56,259,919)   (13,439,062)   (20,889,549)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(27,585,592)   (51,295,279)   (7,685,961)   (16,706,286)
Total Increase (Decrease)

(25,136,536)   (6,236,508)   5,858,678   (730,171)
Net Assets:              
Beginning of period

205,048,691   211,285,199   69,993,392   70,723,563
End of period

$ 179,912,155   $205,048,691   $ 75,852,070   $ 69,993,392
(1) Shares Issued and Redeemed:              
Shares issued

472,091   137,639   291,977   179,188
Shares redeemed

(1,216,186)   (1,534,540)   (546,994)   (894,201)
  (744,095)   (1,396,901)   (255,017)   (715,013)
    
The accompanying notes are an integral part of these financial statements.
193


Penn Series Funds, Inc.
Statements of Changes in Net Assets

  Developed International Index Fund   International Equity Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ 1,380,818   $ 2,587,431   $ (436,043)   $ 2,129,778
Net realized gain (loss)

2,551,030   3,004,119   28,666,007   20,901,774
Net change in unrealized appreciation (depreciation)

4,269,987   14,645,148   15,284,371   55,439,024
Net Increase (Decrease) in Net Assets Resulting from Operations

8,201,835   20,236,698   43,514,335   78,470,576
Capital Share Transactions (1):              
Shares issued

8,402,011   11,803,147   12,617,143   3,613,045
Shares redeemed

(18,375,149)   (19,444,354)   (45,822,700)   (53,011,076)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(9,973,138)   (7,641,207)   (33,205,557)   (49,398,031)
Total Increase (Decrease)

(1,771,303)   12,595,491   10,308,778   29,072,545
Net Assets:              
Beginning of period

111,066,922   98,471,431   325,964,963   296,892,418
End of period

$109,295,619   $ 111,066,922   $ 336,273,741   $ 325,964,963
(1) Shares Issued and Redeemed:              
Shares issued

698,267   863,914   378,342   118,759
Shares redeemed

(1,351,452)   (1,411,048)   (1,361,532)   (1,717,939)
  (653,185)   (547,134)   (983,190)   (1,599,180)
  Emerging Markets Equity Fund   Real Estate Securities Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ (248,068)   $ 1,646,313   $ 1,834,014   $ 2,123,061
Net realized gain (loss)

1,179,133   4,446,556   (4,286,440)   18,498,543
Net change in unrealized appreciation (depreciation)

12,950,444   19,019,903   (2,339,070)   15,039,199
Net Increase (Decrease) in Net Assets Resulting from Operations

13,881,509   25,112,772   (4,791,496)   35,660,803
Capital Share Transactions (1):              
Shares issued

7,422,502   6,646,284   9,621,300   6,153,201
Shares redeemed

(23,380,691)   (31,319,595)   (16,834,148)   (23,112,165)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(15,958,189)   (24,673,311)   (7,212,848)   (16,958,964)
Total Increase (Decrease)

(2,076,680)   439,461   (12,004,344)   18,701,839
Net Assets:              
Beginning of period

147,412,109   146,972,648   133,067,555   114,365,716
End of period

$ 145,335,429   $ 147,412,109   $ 121,063,211   $ 133,067,555
(1) Shares Issued and Redeemed:              
Shares issued

678,651   527,622   397,565   236,427
Shares redeemed

(1,841,803)   (2,535,983)   (689,608)   (914,025)
  (1,163,152)   (2,008,361)   (292,043)   (677,598)
    
The accompanying notes are an integral part of these financial statements.
194


Penn Series Funds, Inc.
Statements of Changes in Net Assets

  Aggressive Allocation Fund   Moderately Aggressive Allocation Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ (210,535)   $ (228,926)   $ (618,332)   $ (671,418)
Net realized gain (loss)

4,861,836   5,681,845   17,087,542   23,326,208
Net change in unrealized appreciation (depreciation)

1,151,393   8,960,560   2,135,312   22,590,636
Net Increase (Decrease) in Net Assets Resulting from Operations

5,802,694   14,413,479   18,604,522   45,245,426
Capital Share Transactions (1):              
Shares issued

1,765,540   2,949,256   5,009,104   5,725,655
Shares redeemed

(9,511,189)   (9,950,420)   (28,837,461)   (36,581,327)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(7,745,649)   (7,001,164)   (23,828,357)   (30,855,672)
Total Increase (Decrease)

(1,942,955)   7,412,315   (5,223,835)   14,389,754
Net Assets:              
Beginning of period

72,016,520   64,604,205   232,308,079   217,918,325
End of period

$ 70,073,565   $ 72,016,520   $ 227,084,244   $ 232,308,079
(1) Shares Issued and Redeemed:              
Shares issued

95,273   147,387   256,776   280,954
Shares redeemed

(462,948)   (503,292)   (1,380,078)   (1,778,108)
  (367,675)   (355,905)   (1,123,302)   (1,497,154)
  Moderate Allocation Fund   Moderately Conservative Allocation Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:              
Net investment income (loss)

$ (813,737)   $ (890,615)   $ (280,823)   $ (284,090)
Net realized gain (loss)

25,510,932   27,316,251   6,352,159   5,886,607
Net change in unrealized appreciation (depreciation)

(149,120)   24,602,076   708,025   7,164,741
Net Increase (Decrease) in Net Assets Resulting from Operations

24,548,075   51,027,712   6,779,361   12,767,258
Capital Share Transactions (1):              
Shares issued

4,351,087   3,278,991   8,395,170   5,539,791
Shares redeemed

(41,104,628)   (47,809,610)   (14,636,141)   (13,287,527)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(36,753,541)   (44,530,619)   (6,240,971)   (7,747,736)
Total Increase (Decrease)

(12,205,466)   6,497,093   538,390   5,019,522
Net Assets:              
Beginning of period

298,115,176   291,618,083   93,946,719   88,927,197
End of period

$ 285,909,710   $ 298,115,176   $ 94,485,109   $ 93,946,719
(1) Shares Issued and Redeemed:              
Shares issued

223,251   179,320   482,248   337,395
Shares redeemed

(2,153,883)   (2,618,616)   (851,613)   (800,808)
  (1,930,632)   (2,439,296)   (369,365)   (463,413)
    
The accompanying notes are an integral part of these financial statements.
195


Penn Series Funds, Inc.
Statements of Changes in Net Assets

  Conservative Allocation Fund
  Year
Ended
12/31/20
  Year
Ended
12/31/19
Increase (Decrease) in Net Assets Operations:      
Net investment income (loss)

$ (189,674)   $ (181,956)
Net realized gain (loss)

3,154,886   2,818,377
Net change in unrealized appreciation (depreciation)

1,027,216   3,438,658
Net Increase (Decrease) in Net Assets Resulting from Operations

3,992,428   6,075,079
Capital Share Transactions (1):      
Shares issued

11,966,235   8,565,195
Shares redeemed

(13,936,211)   (11,900,353)
Net Increase (Decrease) in Net Assets from Capital Share Transactions

(1,969,976)   (3,335,158)
Total Increase (Decrease)

2,022,452   2,739,921
Net Assets:      
Beginning of period

59,831,836   57,091,915
End of period

$ 61,854,288   $ 59,831,836
(1) Shares Issued and Redeemed:      
Shares issued

756,114   576,456
Shares redeemed

(886,960)   (799,657)
  (130,846)   (223,201)
The accompanying notes are an integral part of these financial statements.
196



Penn Series Funds, Inc.
Financial Highlights

MONEY MARKET FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$      1.00   $      1.00   $      1.00   $      1.00   $      1.00
Income (loss) from investment operations:                  
Net investment income (loss)1

       — (a)        0.02        0.01          — (a)          — (a)
Total from investment operations

       —        0.02        0.01          —          —
Less distributions:                  
Net investment income

       — (a)       (0.02)       (0.01)          — (a)          — (a)
Total distributions

       —       (0.02)       (0.01)          —          —
Net asset value, end of period

     $ 1.00        $ 1.00        $ 1.00        $ 1.00        $ 1.00
Total return2

    0.24%       1.61%       0.55%       0.01%       0.01%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 160,467     $ 112,938     $ 110,933      $ 91,567     $ 123,865
Ratio of net expenses to average net assets3

    0.28%       0.59%       1.26%       0.85%       0.45%
Ratio of total expenses to average net assets4

    0.58%       0.59%       0.59%       0.59%       0.58%
Ratio of net investment income (loss) to average net assets

    0.21%       1.60%       0.55%       0.01%       0.01%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The ratio includes expenses waived/reimbursed net of amount recaptured and fees paid indirectly, where applicable; if expenses waived/ reimbursed net of amount recaptured and fees paid indirectly were excluded, the ratio would have been higher (lower), respectively, than the ratio shown.
4 The ratio excludes expenses waived/reimbursed net of amount recaptured and fees paid indirectly, where applicable; if expenses waived/ reimbursed net of amount recaptured and fees paid indirectly were included, the ratio would have been lower than the ratio shown.
(a) Less than one penny per share.

LIMITED MATURITY BOND FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     12.86   $     12.26   $     12.09   $     11.89   $     11.59
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.24         0.37         0.32         0.24         0.18
Net realized and unrealized gain (loss) on investment transactions

     0.23        0.23       (0.15)       (0.04)        0.12
Total from investment operations

     0.47        0.60        0.17        0.20        0.30
Net asset value, end of period

    $ 13.33       $ 12.86       $ 12.26       $ 12.09       $ 11.89
Total return2

    3.65%       4.89%       1.41%       1.68%       2.59%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 254,878     $ 244,998     $ 233,216     $ 229,184     $ 210,476
Ratio of total expenses to average net assets

    0.70%       0.70%       0.70%       0.70%       0.70%
Ratio of net investment income (loss) to average net assets

    1.86%       2.92%       2.61%       1.98%       1.55%
Portfolio turnover rate

      99%         54%         79%         97%        105%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
The accompanying notes are an integral part of these financial statements.
197



Penn Series Funds, Inc.
Financial Highlights

QUALITY BOND FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     16.01   $     14.66   $     14.68   $     14.03   $     13.45
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.35         0.45         0.41         0.36         0.36
Net realized and unrealized gain (loss) on investment transactions

     1.00        0.90       (0.43)        0.29        0.22
Total from investment operations

     1.35        1.35       (0.02)        0.65        0.58
Net asset value, end of period

    $ 17.36       $ 16.01       $ 14.66       $ 14.68       $ 14.03
Total return2

    8.43%       9.21%      (0.14%)       4.63%       4.31%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 484,474     $ 433,734     $ 409,027     $ 485,598     $ 504,849
Ratio of total expenses to average net assets

    0.67%       0.67%       0.66%       0.66%       0.66%
Ratio of net investment income (loss) to average net assets

    2.11%       2.92%       2.81%       2.48%       2.58%
Portfolio turnover rate

      75%         47%         59%         72%         77%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

HIGH YIELD BOND FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     14.90   $     12.88   $     13.18   $     12.29   $     10.61
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.71         0.68         0.66         0.69         0.69
Net realized and unrealized gain (loss) on investment transactions

     0.41        1.34       (0.96)        0.20        0.99
Total from investment operations

     1.12        2.02       (0.30)        0.89        1.68
Net asset value, end of period

    $ 16.02       $ 14.90       $ 12.88       $ 13.18       $ 12.29
Total return2

    7.52%      15.68%      (2.35%)       7.42%      15.83%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 167,391     $ 159,896     $ 150,324     $ 171,467     $ 168,650
Ratio of total expenses to average net assets

    0.72%       0.71%       0.77%       0.86%       0.86%
Ratio of net investment income (loss) to average net assets

    4.73%       4.83%       5.02%       5.39%       6.03%
Portfolio turnover rate

     128%        133%        115%         78%         81%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
The accompanying notes are an integral part of these financial statements.
198



Penn Series Funds, Inc.
Financial Highlights

FLEXIBLY MANAGED FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     65.45   $     52.56   $     52.31   $     45.44   $     42.05
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.72         0.84         1.22         0.53         0.54
Net realized and unrealized gain (loss) on investment transactions

    10.95       12.05       (0.97)        6.34        2.85
Total from investment operations

    11.67       12.89        0.25        6.87        3.39
Net asset value, end of period

    $ 77.12       $ 65.45       $ 52.56       $ 52.31       $ 45.44
Total return2

   17.83%      24.53%       0.48%      15.12%       8.06%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

$ 4,886,355   $ 4,418,265   $ 3,698,250   $ 3,898,297   $ 3,494,596
Ratio of total expenses to average net assets

    0.88%       0.88%       0.89%       0.89%       0.89%
Ratio of net investment income (loss) to average net assets

    1.07%       1.40%       2.28%       1.07%       1.24%
Portfolio turnover rate

      88%         45%         69%         61%         66%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

BALANCED FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     23.76   $     19.53   $     20.12   $     17.60   $     16.24
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.05)        (0.04)        (0.04)        (0.04)        (0.03)
Net realized and unrealized gain (loss) on investment transactions

     3.56        4.27       (0.55)        2.56        1.39
Total from investment operations

     3.51        4.23       (0.59)        2.52        1.36
Net asset value, end of period

    $ 27.27       $ 23.76       $ 19.53       $ 20.12       $ 17.60
Total return2

   14.77%      21.66%      (2.93%)      14.32%       8.37%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 84,348      $ 81,070      $ 74,832      $ 84,403      $ 77,801
Ratio of total expenses to average net assets3

    0.20%       0.20%       0.20%       0.19%       0.19%
Ratio of net investment income (loss) to average net assets

   (0.20%)      (0.20%)      (0.19%)      (0.19%)      (0.19%)
Portfolio turnover rate

      15%          6%          8%          9%          7%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The Fund also will indirectly bear its prorated share of expenses of the underlying funds. Such expenses are not included in the calculation of this ratio.
The accompanying notes are an integral part of these financial statements.
199



Penn Series Funds, Inc.
Financial Highlights

LARGE GROWTH STOCK FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     52.10   $     39.95   $     40.48   $     30.40   $     30.07
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.29)        (0.08)        (0.02)        (0.03)        (0.04)
Net realized and unrealized gain (loss) on investment transactions

    19.57       12.23       (0.51)       10.11        0.37
Total from investment operations

    19.28       12.15       (0.53)       10.08        0.33
Net asset value, end of period

    $ 71.38       $ 52.10       $ 39.95       $ 40.48       $ 30.40
Total return2

   37.01%      30.41%      (1.31%)      33.16%       1.10%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 405,787     $ 331,420     $ 282,675     $ 307,131     $ 259,278
Ratio of total expenses to average net assets

    0.95%       0.95%       0.95%       0.96%       0.96%
Ratio of net investment income (loss) to average net assets

   (0.50%)      (0.18%)      (0.05%)      (0.08%)      (0.15%)
Portfolio turnover rate

      35%         26%         42%         52%         42%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

LARGE CAP GROWTH FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     25.02   $     17.90   $     17.78   $     13.87   $     13.09
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.05         0.08         0.08         0.07         0.07
Net realized and unrealized gain (loss) on investment transactions

     5.49        7.04        0.04        3.84        0.71
Total from investment operations

     5.54        7.12        0.12        3.91        0.78
Net asset value, end of period

    $ 30.56       $ 25.02       $ 17.90       $ 17.78       $ 13.87
Total return2

   22.14%      39.78%       0.68%      28.19%       5.96%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 68,536      $ 63,219      $ 53,444      $ 58,389      $ 42,791
Ratio of total expenses to average net assets

    0.88%       0.88%       0.87%       0.89%       0.89%
Ratio of net investment income (loss) to average net assets

    0.19%       0.35%       0.40%       0.43%       0.55%
Portfolio turnover rate

      34%         24%         25%         28%         25%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
The accompanying notes are an integral part of these financial statements.
200



Penn Series Funds, Inc.
Financial Highlights

LARGE CORE GROWTH FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     28.52   $     22.41   $     21.67   $     16.32   $     16.30
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.22)        (0.07)        (0.02)        (0.03)         0.01
Net realized and unrealized gain (loss) on investment transactions

    21.75        6.18        0.76        5.38        0.01
Total from investment operations

    21.53        6.11        0.74        5.35        0.02
Net asset value, end of period

    $ 50.05       $ 28.52       $ 22.41       $ 21.67       $ 16.32
Total return2

   75.49%      27.27%       3.42%      32.78%       0.12%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 222,028     $ 135,930     $ 118,365     $ 124,493     $ 101,020
Ratio of total expenses to average net assets

    0.85%       0.86%       0.86%       0.86%       0.85%
Ratio of net investment income (loss) to average net assets

   (0.60%)      (0.26%)      (0.09%)      (0.18%)       0.06%
Portfolio turnover rate

      74%         74%         72%         64%        141%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

LARGE CAP VALUE FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     32.39   $     26.22   $     28.41   $     24.79   $     22.21
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.35         0.31         0.35         0.41         0.36
Net realized and unrealized gain (loss) on investment transactions

     0.40        5.86       (2.54)        3.21        2.22
Total from investment operations

     0.75        6.17       (2.19)        3.62        2.58
Net asset value, end of period

    $ 33.14       $ 32.39       $ 26.22       $ 28.41       $ 24.79
Total return2

    2.32%      23.53%      (7.71%)      14.60%      11.62%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 177,811     $ 196,108     $ 179,441     $ 201,219     $ 202,553
Ratio of total expenses to average net assets

    0.92%       0.91%       0.90%       0.90%       0.90%
Ratio of net investment income (loss) to average net assets

    1.20%       1.05%       1.22%       1.57%       1.60%
Portfolio turnover rate

      56%         62%        108%         17%         22%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
The accompanying notes are an integral part of these financial statements.
201



Penn Series Funds, Inc.
Financial Highlights

LARGE CORE VALUE FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     22.58   $     17.41   $     18.64   $     16.18   $     14.77
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.31         0.30         0.26         0.25         0.22
Net realized and unrealized gain (loss) on investment transactions

     0.29        4.87       (1.49)        2.21        1.19
Total from investment operations

     0.60        5.17       (1.23)        2.46        1.41
Net asset value, end of period

    $ 23.18       $ 22.58       $ 17.41       $ 18.64       $ 16.18
Total return2

    2.66%      29.70%      (6.60%)      15.21%       9.55%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 178,959     $ 192,959     $ 176,072     $ 216,214     $ 191,386
Ratio of total expenses to average net assets

    0.91%       0.91%       0.90%       0.90%       0.90%
Ratio of net investment income (loss) to average net assets

    1.52%       1.48%       1.39%       1.44%       1.47%
Portfolio turnover rate

      80%         65%         76%        106%         87%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

INDEX 500 FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     27.30   $     20.83   $     21.87   $     18.00   $     16.14
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.39         0.40         0.35         0.33         0.29
Net realized and unrealized gain (loss) on investment transactions

     4.62        6.07       (1.39)        3.54        1.57
Total from investment operations

     5.01        6.47       (1.04)        3.87        1.86
Net asset value, end of period

    $ 32.31       $ 27.30       $ 20.83       $ 21.87       $ 18.00
Total return2

   18.35%      31.06%      (4.76%)      21.50%      11.52%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 595,933     $ 494,540     $ 416,864     $ 485,750     $ 432,873
Ratio of total expenses to average net assets

    0.36%       0.36%       0.36%       0.36%       0.36%
Ratio of net investment income (loss) to average net assets

    1.44%       1.63%       1.56%       1.64%       1.75%
Portfolio turnover rate

      19%          3%          3%          2%          3%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
The accompanying notes are an integral part of these financial statements.
202



Penn Series Funds, Inc.
Financial Highlights

MID CAP GROWTH FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     26.23   $     19.01   $     18.96   $     14.92   $     14.02
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.11)        (0.07)        (0.06)        (0.03)           —(a)
Net realized and unrealized gain (loss) on investment transactions

    13.09        7.29        0.11        4.07        0.90
Total from investment operations

    12.98        7.22        0.05        4.04        0.90
Net asset value, end of period

    $ 39.21       $ 26.23       $ 19.01       $ 18.96       $ 14.92
Total return2

   49.48%      37.98%       0.26%      27.08%       6.42%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 196,992     $ 148,766     $ 112,502     $ 121,288     $ 103,325
Ratio of total expenses to average net assets

    0.95%       0.96%       0.96%       0.96%       0.97%
Ratio of net investment income (loss) to average net assets

   (0.38%)      (0.32%)      (0.28%)      (0.20%)          —
Portfolio turnover rate

      26%         22%         42%         25%         28%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
(a) Less than one penny per share.

MID CAP VALUE FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     26.45   $     22.60   $     26.65   $     22.69   $     19.36
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.23         0.29         0.23         0.20         0.20
Net realized and unrealized gain (loss) on investment transactions

    (3.48)        3.56       (4.28)        3.76        3.13
Total from investment operations

    (3.25)        3.85       (4.05)        3.96        3.33
Net asset value, end of period

    $ 23.20       $ 26.45       $ 22.60       $ 26.65       $ 22.69
Total return2

  (12.29%)      17.04%     (15.20%)      17.45%      17.20%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 94,762     $ 116,799     $ 141,771     $ 180,696     $ 170,374
Ratio of total expenses to average net assets

    0.82%       0.80%       0.79%       0.78%       0.78%
Ratio of net investment income (loss) to average net assets

    1.13%       1.14%       0.85%       0.83%       0.97%
Portfolio turnover rate

     122% (b)         14%         33%         31%         33%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
(b) The Fund’s portfolio turnover rate increased substantially during the year ended December 31, 2020 due to a change in the Fund’s sub-adviser and associated repositioning.
The accompanying notes are an integral part of these financial statements.
203



Penn Series Funds, Inc.
Financial Highlights

MID CORE VALUE FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     26.94   $     20.92   $     24.06   $     21.57   $     17.57
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.35         0.35         0.28         0.33         0.19
Net realized and unrealized gain (loss) on investment transactions

     0.08        5.67       (3.42)        2.16        3.81
Total from investment operations

     0.43        6.02       (3.14)        2.49        4.00
Net asset value, end of period

    $ 27.37       $ 26.94       $ 20.92       $ 24.06       $ 21.57
Total return2

    1.60%      28.78%     (13.05%)      11.55%      22.77%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 94,077      $ 99,799      $ 79,292      $ 99,011      $ 96,177
Ratio of total expenses to average net assets

    1.04%       1.05%       1.06%       1.02%       1.04%
Ratio of net investment income (loss) to average net assets

    1.46%       1.44%       1.16%       1.48%       1.01%
Portfolio turnover rate

      75%         50%         60%         45%         64%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

SMID CAP GROWTH FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     34.39   $     24.93   $     26.38   $     20.68   $     19.46
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.25)        (0.18)        (0.10)        (0.11)        (0.10)
Net realized and unrealized gain (loss) on investment transactions

    18.24        9.64       (1.35)        5.81        1.32
Total from investment operations

    17.99        9.46       (1.45)        5.70        1.22
Net asset value, end of period

    $ 52.38       $ 34.39       $ 24.93       $ 26.38       $ 20.68
Total return2

   52.31%      37.95%      (5.50%)      27.56%       6.27%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 96,010      $ 70,961      $ 59,882      $ 64,783      $ 52,713
Ratio of net expenses to average net assets3

    1.05%       1.04%       1.03%       1.05%       1.05%
Ratio of total expenses to average net assets4

    1.05%       1.04%       1.03%       1.04%       1.04%
Ratio of net investment income (loss) to average net assets3

   (0.65%)      (0.59%)      (0.35%)      (0.47%)      (0.52%)
Portfolio turnover rate

      97%         70%         83%         68%        160%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The ratio includes expenses waived/reimbursed net of amount recaptured and fees paid indirectly, where applicable; if expenses waived/ reimbursed net of amount recaptured and fees paid indirectly were excluded, the ratio would have been higher (lower), respectively, than the ratio shown.
4 The ratio excludes expenses waived/reimbursed net of amount recaptured and fees paid indirectly, where applicable; if expenses waived/ reimbursed net of amount recaptured and fees paid indirectly were included, the ratio would have been lower than the ratio shown.
The accompanying notes are an integral part of these financial statements.
204



Penn Series Funds, Inc.
Financial Highlights

SMID CAP VALUE FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     28.37   $     23.67   $     27.90   $     24.69   $     19.72
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.18         0.18         0.10         0.03         0.02
Net realized and unrealized gain (loss) on investment transactions

     0.23        4.52       (4.33)        3.18        4.95
Total from investment operations

     0.41        4.70       (4.23)        3.21        4.97
Net asset value, end of period

    $ 28.78       $ 28.37       $ 23.67       $ 27.90       $ 24.69
Total return2

    1.45%      19.86%     (15.16%)      13.00%      25.20%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 57,672      $ 85,324      $ 80,919      $ 85,323      $ 82,032
Ratio of total expenses to average net assets

    1.17%       1.12%       1.10%       1.18%       1.21%
Ratio of net investment income (loss) to average net assets

    0.77%       0.66%       0.36%       0.11%       0.10%
Portfolio turnover rate

      55%         32%         47%         37%         62%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

SMALL CAP GROWTH FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     47.45   $     37.00   $     38.80   $     31.08   $     28.59
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.28)        (0.18)        (0.15)        (0.16)        (0.10)
Net realized and unrealized gain (loss) on investment transactions

    15.49       10.63       (1.65)        7.88        2.59
Total from investment operations

    15.21       10.45       (1.80)        7.72        2.49
Net asset value, end of period

    $ 62.66       $ 47.45       $ 37.00       $ 38.80       $ 31.08
Total return2

   32.06%      28.24%      (4.64%)      24.84%       8.71%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 142,595     $ 118,244      $ 93,243     $ 102,380      $ 85,958
Ratio of total expenses to average net assets

    1.01%       1.02%       1.00%       1.01%       1.02%
Ratio of net investment income (loss) to average net assets

   (0.60%)      (0.40%)      (0.36%)      (0.46%)      (0.35%)
Portfolio turnover rate

      28%         21%         22%         25%         17%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
The accompanying notes are an integral part of these financial statements.
205



Penn Series Funds, Inc.
Financial Highlights

SMALL CAP VALUE FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     39.32   $     31.96   $     37.11   $     33.06   $     26.50
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.19         0.24         0.17         0.18         0.23
Net realized and unrealized gain (loss) on investment transactions

     0.73        7.12       (5.32)        3.87        6.33
Total from investment operations

     0.92        7.36       (5.15)        4.05        6.56
Net asset value, end of period

    $ 40.24       $ 39.32       $ 31.96       $ 37.11       $ 33.06
Total return2

    2.34%      23.03%     (13.88%)      12.25%      24.75%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 179,912     $ 205,049     $ 211,285     $ 262,728     $ 244,968
Ratio of total expenses to average net assets

    1.02%       0.98%       0.97%       0.97%       0.97%
Ratio of net investment income (loss) to average net assets

    0.58%       0.65%       0.46%       0.56%       0.83%
Portfolio turnover rate

      84%         54%         55%         59%         57%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

SMALL CAP INDEX FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     25.22   $     20.26   $     22.86   $     20.09   $     16.69
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.10         0.13         0.14         0.13         0.12
Net realized and unrealized gain (loss) on investment transactions

     4.78        4.83       (2.74)        2.64        3.28
Total from investment operations

     4.88        4.96       (2.60)        2.77        3.40
Net asset value, end of period

    $ 30.10       $ 25.22       $ 20.26       $ 22.86       $ 20.09
Total return2

   19.35%      24.48%     (11.37%)      13.79%      20.37%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 75,852      $ 69,993      $ 70,724      $ 81,638      $ 76,355
Ratio of net expenses to average net assets3

    0.74%       0.72%       0.65%       0.65%       0.66%
Ratio of total expenses to average net assets4

    0.75%       0.72%       0.65%       0.65%       0.66%
Ratio of net investment income (loss) to average net assets

    0.43%       0.55%       0.59%       0.62%       0.70%
Portfolio turnover rate

      27%         16%         14%         13%         18%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The ratio includes expenses waived/reimbursed net of amount recaptured and fees paid indirectly, where applicable; if expenses waived/ reimbursed net of amount recaptured and fees paid indirectly were excluded, the ratio would have been higher (lower), respectively, than the ratio shown.
4 The ratio excludes expenses waived/reimbursed net of amount recaptured and fees paid indirectly, where applicable; if expenses waived/ reimbursed net of amount recaptured and fees paid indirectly were included, the ratio would have been lower than the ratio shown.
The accompanying notes are an integral part of these financial statements.
206



Penn Series Funds, Inc.
Financial Highlights

DEVELOPED INTERNATIONAL INDEX FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     14.79   $     12.22   $     14.22   $     11.42   $     11.38
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.19         0.33         0.31         0.27         0.26
Net realized and unrealized gain (loss) on investment transactions

     0.96        2.24       (2.31)        2.53       (0.22)
Total from investment operations

     1.15        2.57       (2.00)        2.80        0.04
Net asset value, end of period

    $ 15.94       $ 14.79       $ 12.22       $ 14.22       $ 11.42
Total return2

    7.78%      21.03%     (14.07%)      24.52%       0.35%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 109,296     $ 111,067      $ 98,471     $ 116,930      $ 97,813
Ratio of total expenses to average net assets

    0.89%       0.82%       0.79%       0.82%       0.81%
Ratio of net investment income (loss) to average net assets

    1.39%       2.41%       2.24%       2.05%       2.35%
Portfolio turnover rate

       5%          6%          3%          4%          7%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.

INTERNATIONAL EQUITY FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     33.95   $     26.51   $     30.26   $     22.98   $     24.23
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.05)         0.20         0.19         0.15         0.26
Net realized and unrealized gain (loss) on investment transactions

     5.12        7.24       (3.94)        7.13       (1.51)
Total from investment operations

     5.07        7.44       (3.75)        7.28       (1.25)
Net asset value, end of period

    $ 39.02       $ 33.95       $ 26.51       $ 30.26       $ 22.98
Total return2

   14.93%      28.07%     (12.39%)      31.68%      (5.16%)
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 336,274     $ 325,965     $ 296,892     $ 375,821     $ 319,322
Ratio of total expenses to average net assets

    1.06%       1.08%       1.11%       1.12%       1.12%
Ratio of net investment income (loss) to average net assets

   (0.14%)       0.66%      (0.66%)       0.56%       1.10%
Portfolio turnover rate

      75%         50%         50%         32%         34%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
The accompanying notes are an integral part of these financial statements.
207



Penn Series Funds, Inc.
Financial Highlights

EMERGING MARKETS EQUITY FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     13.52   $     11.39   $     13.80   $     10.22   $      9.66
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.02)         0.14         0.09         0.03         0.03
Net realized and unrealized gain (loss) on investment transactions

     1.43        1.99       (2.50)        3.55        0.53
Total from investment operations

     1.41        2.13       (2.41)        3.58        0.56
Net asset value, end of period

    $ 14.93       $ 13.52       $ 11.39       $ 13.80       $ 10.22
Total return2

   10.43%      18.70%     (17.46%)      35.03%       5.80%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 145,335     $ 147,412     $ 146,973     $ 184,357     $ 150,270
Ratio of total expenses to average net assets

    1.32%       1.34%       1.32%       1.51%       1.65%
Ratio of net investment income (loss) to average net assets

   (0.19%)       1.11%       0.73%       0.25%       0.28%
Portfolio turnover rate

     121% (a)         35%         45%         41%         46%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
(a) The Fund’s portfolio turnover rate increased substantially during the year ended December 31, 2020 due to a change in the Fund’s sub-adviser and associated repositioning.

REAL ESTATE SECURITIES FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     27.25   $     20.57   $     21.47   $     19.99   $     18.95
Income (loss) from investment operations:                  
Net investment income (loss)1

      0.39         0.41         0.43         0.39         0.32
Net realized and unrealized gain (loss) on investment transactions

    (1.27)        6.27       (1.33)        1.09        0.72
Total from investment operations

    (0.88)        6.68       (0.90)        1.48        1.04
Net asset value, end of period

    $ 26.37       $ 27.25       $ 20.57       $ 21.47       $ 19.99
Total return2

   (3.23%)      32.47%      (4.19%)       7.40%       5.49%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 121,063     $ 133,068     $ 114,366     $ 137,842     $ 137,257
Ratio of total expenses to average net assets

    0.97%       0.96%       0.96%       0.95%       0.95%
Ratio of net investment income (loss) to average net assets

    1.59%       1.64%       2.05%       1.86%       1.65%
Portfolio turnover rate

      64%         74%         66%         75%         81%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
The accompanying notes are an integral part of these financial statements.
208



Penn Series Funds, Inc.
Financial Highlights

AGGRESSIVE ALLOCATION FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     21.41   $     17.37   $     19.20   $     15.99   $     14.88
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.07)        (0.06)        (0.06)        (0.05)        (0.05)
Net realized and unrealized gain (loss) on investment transactions

     2.05        4.10       (1.77)        3.26        1.16
Total from investment operations

     1.98        4.04       (1.83)        3.21        1.11
Net asset value, end of period

    $ 23.39       $ 21.41       $ 17.37       $ 19.20       $ 15.99
Total return2

    9.25%      23.26%      (9.53%)      20.08%       7.46%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 70,074      $ 72,017      $ 64,604      $ 75,079      $ 61,867
Ratio of total expenses to average net assets3

    0.33%       0.33%       0.32%       0.31%       0.32%
Ratio of net investment income (loss) to average net assets

   (0.33%)      (0.33%)      (0.32%)      (0.31%)      (0.32%)
Portfolio turnover rate

      17%         14%         19%         20%         20%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The Fund also will indirectly bear its prorated share of expenses of the underlying funds. Such expenses are not included in the calculation of this ratio.

MODERATELY AGGRESSIVE ALLOCATION FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     22.06   $     18.12   $     19.66   $     16.72   $     15.55
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.06)        (0.06)        (0.06)        (0.05)        (0.05)
Net realized and unrealized gain (loss) on investment transactions

     2.14        4.00       (1.48)        2.99        1.22
Total from investment operations

     2.08        3.94       (1.54)        2.94        1.17
Net asset value, end of period

    $ 24.14       $ 22.06       $ 18.12       $ 19.66       $ 16.72
Total return2

    9.43%      21.75%      (7.83%)      17.58%       7.52%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 227,084     $ 232,308     $ 217,918     $ 266,699     $ 230,243
Ratio of total expenses to average net assets3

    0.30%       0.30%       0.30%       0.29%       0.30%
Ratio of net investment income (loss) to average net assets

   (0.30%)      (0.29%)      (0.29%)      (0.29%)      (0.30%)
Portfolio turnover rate

      17%         12%         14%         16%         14%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The Fund also will indirectly bear its prorated share of expenses of the underlying funds. Such expenses are not included in the calculation of this ratio.
The accompanying notes are an integral part of these financial statements.
209



Penn Series Funds, Inc.
Financial Highlights

MODERATE ALLOCATION FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     19.55   $     16.48   $     17.51   $     15.36   $     14.36
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.06)        (0.05)        (0.05)        (0.05)        (0.04)
Net realized and unrealized gain (loss) on investment transactions

     1.97        3.12       (0.98)        2.20        1.04
Total from investment operations

     1.91        3.07       (1.03)        2.15        1.00
Net asset value, end of period

    $ 21.46       $ 19.55       $ 16.48       $ 17.51       $ 15.36
Total return2

    9.77%      18.63%      (5.88%)      14.00%       6.96%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

  $ 285,910     $ 298,115     $ 291,618     $ 342,656     $ 332,347
Ratio of total expenses to average net assets3

    0.30%       0.30%       0.29%       0.29%       0.29%
Ratio of net investment income (loss) to average net assets

   (0.30%)      (0.30%)      (0.29%)      (0.29%)      (0.29%)
Portfolio turnover rate

      17%          9%         14%         12%         12%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The Fund also will indirectly bear its prorated share of expenses of the underlying funds. Such expenses are not included in the calculation of this ratio.

MODERATELY CONSERVATIVE ALLOCATION FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     17.58   $     15.31   $     15.86   $     14.42   $     13.60
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.05)        (0.05)        (0.05)        (0.05)        (0.04)
Net realized and unrealized gain (loss) on investment transactions

     1.46        2.32       (0.50)        1.49        0.86
Total from investment operations

     1.41        2.27       (0.55)        1.44        0.82
Net asset value, end of period

    $ 18.99       $ 17.58       $ 15.31       $ 15.86       $ 14.42
Total return2

    8.02%      14.83%      (3.47%)       9.99%       6.03%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 94,485      $ 93,947      $ 88,927      $ 98,414      $ 97,741
Ratio of total expenses to average net assets3

    0.32%       0.32%       0.31%       0.30%       0.30%
Ratio of net investment income (loss) to average net assets

   (0.31%)      (0.31%)      (0.30%)      (0.30%)      (0.30%)
Portfolio turnover rate

      23%         13%         17%         15%         15%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The Fund also will indirectly bear its prorated share of expenses of the underlying funds. Such expenses are not included in the calculation of this ratio.
The accompanying notes are an integral part of these financial statements.
210



Penn Series Funds, Inc.
Financial Highlights

CONSERVATIVE ALLOCATION FUND
For a share outstanding throughout each period
  Year Ended December 31,
  2020   2019   2018   2017   2016
Net asset value, beginning of period

$     15.51   $     13.99   $     14.18   $     13.33   $     12.73
Income (loss) from investment operations:                  
Net investment income (loss)1

     (0.05)        (0.05)        (0.04)        (0.04)        (0.04)
Net realized and unrealized gain (loss) on investment transactions

     1.14        1.57       (0.15)        0.89        0.64
Total from investment operations

     1.09        1.52       (0.19)        0.85        0.60
Net asset value, end of period

    $ 16.60       $ 15.51       $ 13.99       $ 14.18       $ 13.33
Total return2

    7.03%      10.87%      (1.34%)       6.38%       4.71%
Ratios/Supplemental data:                  
Net assets, end of period (in thousands)

   $ 61,854      $ 59,832      $ 57,092      $ 58,659      $ 56,092
Ratio of total expenses to average net assets3

    0.33%       0.34%       0.33%       0.32%       0.31%
Ratio of net investment income (loss) to average net assets

   (0.33%)      (0.31%)      (0.31%)      (0.31%)      (0.31%)
Portfolio turnover rate

      30%         18%         23%         23%         26%

1 The net investment income (loss) per share was calculated using the average shares outstanding method.
2 Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value. Total returns do not reflect expenses associated with variable contracts such as administrative fees, account charges and surrender charges, which if reflected would reduce the total returns for all periods presented. Total returns may reflect adjustments to conform with generally accepted accounting principles.
3 The Fund also will indirectly bear its prorated share of expenses of the underlying funds. Such expenses are not included in the calculation of this ratio.
The accompanying notes are an integral part of these financial statements.
211



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

1 —  Organization
Penn Series Funds, Inc. (“Penn Series”) was incorporated in Maryland on April 22, 1982. Penn Series is registered under the Investment Company Act of 1940, as amended, as an open-end, diversified management investment company. Penn Series is open only to purchasers of The Penn Mutual Life Insurance Company (“Penn Mutual”) and The Penn Insurance and Annuity Company insurance contracts and certain of Penn Mutual’s employee benefit plans.
Penn Series is presently offering shares in its Money Market, Limited Maturity Bond, Quality Bond, High Yield Bond, Flexibly Managed, Balanced, Large Growth Stock, Large Cap Growth, Large Core Growth, Large Cap Value, Large Core Value, Index 500, Mid Cap Growth, Mid Cap Value, Mid Core Value, SMID Cap Growth, SMID Cap Value, Small Cap Growth, Small Cap Value, Small Cap Index, Developed International Index, International Equity, Emerging Markets Equity, Real Estate Securities, Aggressive Allocation, Moderately Aggressive Allocation, Moderate Allocation, Moderately Conservative Allocation and Conservative Allocation Funds (each a “Fund” and collectively, the “Funds”). Penn Series also has the authority to issue shares in three additional funds, each of which would have their own investment objective and policies.
Fund of Funds (“FOFs”) – Each Penn Series FOF seeks to achieve its investment objective by investing in other Penn Series Funds (“Underlying Funds”) and uses asset allocation strategies to determine how much to invest in the Underlying Funds. Each of the following is a Penn Series FOFs: Balanced, Aggressive Allocation, Moderately Aggressive Allocation, Moderate Allocation, Moderately Conservative Allocation and Conservative Allocation Funds.
2 —  Significant Accounting Policies
The following significant accounting policies are followed by Penn Series in the preparation of its financial statements. The preparation of financial statements in accordance with the accounting principles generally accepted in the United States (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates and those differences could be material. The Funds are investment companies and follow the accounting and reporting guidance in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic No. 946.
Security Valuation:
Money Market Fund — Investments in securities are valued using the amortized cost method as permitted by Rule 2a-7 under the Investment Company Act of 1940, which involves initially valuing investments at cost and thereafter assuming a constant amortization to maturity of any premium or discount. This method approximates market value.
Limited Maturity Bond, Quality Bond, High Yield Bond, Flexibly Managed, Large Growth Stock, Large Cap Growth, Large Core Growth, Large Cap Value, Large Core Value, Index 500, Mid Cap Growth, Mid Cap Value, Mid Core Value, SMID Cap Growth, SMID Cap Value, Small Cap Growth, Small Cap Value, Small Cap Index, Developed International Index, International Equity, Emerging Markets Equity, Real Estate Securities Funds — Portfolio securities listed on a securities exchange or an automated quotation system for which quotations are readily available, including securities traded over the counter, are valued at the last quoted sale price on the principal exchange or market on which they are traded on the valuation date or, if there is no such reported sale on the valuation date, at the most recent quoted bid price. Securities valued according to these evaluation methods are categorized as Level 1 in the fair value hierarchy described below. Debt and fixed income securities are valued by recognized independent third-party valuation services, employing valuation methodologies that utilize actual market transactions, broker-dealer supplied valuations, and matrix pricing. Matrix pricing for corporate bonds, floating rate notes, municipal securities and U.S. government and government agency obligations considers yield or price of bonds of comparable quality, coupon, maturity and type and, for asset backed securities, commercial mortgage securities and U.S. government agency mortgage securities, also considers prepayment speed assumptions and attributes and performance of the underlying collateral. Securities valued according to these valuation methods are generally categorized as Level 2 in the fair value hierarchy described below. To the extent that bid prices are provided by the pricing service, the Funds will use the bid price. Debt obligations with remaining maturities of sixty days or less may be valued at their amortized cost, which approximates market value. The prices for foreign securities are reported in local currency and converted to U.S. dollars using currency exchange rates as of the valuation date.
212



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Options are valued at the last traded price on the market where such options are principally traded or, if there was no trade on such day, at the last bid quote. Futures contracts are valued at the last settlement price on the market where such futures contracts are principally traded. Although derivatives may be subject to netting provisions, as discussed further in Note 7, derivatives held are valued at their gross amounts.
To assess the continuing appropriateness of third-party pricing service security valuations, Penn Mutual Asset Management, LLC (“PMAM” or the “Adviser”), the investment adviser to each of the Funds, or the Fund’s sub-adviser, as applicable, or the fund accounting service provider, who is subject to oversight by the Administrator, regularly monitor the prices and compare prices to alternate sources where applicable. Pricing challenges are issued for valuation differences exceeding certain tolerances or when considered not reflective of the market by the Adviser or sub-adviser, as applicable.
Securities for which market quotations are not readily available are valued at fair value prices determined using methods approved by the Penn Series Board of Directors (the “Board of Directors”). The Penn Series Valuation Committee (the “Valuation Committee”), established by and subject to oversight by the Board of Directors, monitors pricing related policies and procedures and approves all fair value determinations. The Valuation Committee consists of representatives from PMAM and Penn Mutual, the administrator to the Funds (the “Administrator”). The Valuation Committee regularly makes good faith judgments, using sources and information obtained, including recommendations and supporting rationales and inputs from the Adviser or the applicable sub-adviser, to establish and /or adjust fair valuations of securities as events occur and circumstances warrant. The information and inputs may include but are not limited to cost of the security, last sale price, private transaction trading prices, comparable publicly traded security prices, discount rates, publicly disclosed news stories and regulatory filings, estimated cash flows and yield curves. As part of its procedures, the Valuation Committee monitors the fair valued securities, considers additional news or significant developments relative to the specific security, reviews the valuations with the Adviser or respective sub-adviser on a regular basis and applies back testing procedures to valuations as applicable. Reasons for which securities may be valued in this manner include, but are not limited to, trading on an exchange for a security has been halted, suspended or has not begun, a security has been de-listed from a national exchange, trading on a security’s primary market is temporarily closed at a time when, under normal conditions, it would be open, or valuation by a third party pricing service is currently not available or is no longer available.
Certain events may occur between the time that foreign markets close, on which securities held by the Fund principally trade, and the time at which the Fund’s NAV is calculated. These securities are valued at a fair value utilizing an independent third party valuation service in accordance with procedures adopted by the Fund’s Board of Directors. The methodology and procedures followed by the valuation service consider the correlation of the trading patterns of the foreign security to the intraday trading in the U.S. markets for investments such as ADRs, financial futures, ETFs, and certain indexes as well as prices for similar securities. Securities valued using such valuation service are classified as Level 2 of the fair value hierarchy as these adjustment factors are considered other observable inputs to the valuation. Values from the valuation service are applied in the event that there is a movement in the U.S. market that exceeds a specific threshold that has been established by the Valuation Committee. The Valuation Committee has also established a “confidence interval”, which is used to determine the level of historical correlation between the value of a specific foreign security and movements in the U.S. market before a particular security will be fair valued when the threshold is exceeded. In the event that the threshold established by the Valuation Committee is exceeded on a specific day, the Funds shall value the non-U.S. securities in their portfolios that exceed the applicable “confidence interval” based upon the adjusted prices provided by the fair valuation service.
The determination of a security’s fair value price often involves the consideration of a number of subjective factors, and is therefore subject to the unavoidable risk that the value assigned to a security may be higher or lower than the security’s value would be if a reliable market quotation for the security was readily available.
Balanced, Aggressive Allocation, Moderately Aggressive Allocation, Moderate Allocation, Moderately Conservative Allocation and Conservative Allocation Funds — The valuation of each Fund’s investment in its Underlying Funds is based on the net asset values of the Underlying Funds each business day.
Fair value measurements are determined within a framework that has established a fair value hierarchy based upon the various data inputs utilized in determining the value of the Funds’ investments. Inputs refer broadly to the assumptions that market participants would use in pricing an asset. Inputs may be observable or unobservable.
213



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Observable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the reporting entity. Unobservable inputs are inputs that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability based on the best information available in the circumstances. These inputs are summarized into three broad levels as follows:
Level 1 — quoted prices in active markets for identical securities
Level 2 — other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.)
Level 3 — significant unobservable inputs (including the Fund’s own assumptions in determining the fair value of investments)
Significant Level 3 items at December 31, 2020 consist of $29,305,895 and $6,169,817 of equities in the Flexibly Managed Fund and Large Growth Stock Fund respectively which were not publicly trading. The unobservable inputs used in valuing these securities include new rounds of financing, negotiated transactions of significant size between other investors in the company, relevant market valuations of peer companies and strategic events affecting the company. Significant increases (decreases) in the valuation indicated by the new rounds of financing, valuations observed through negotiated transactions between other investors in the company or changes in the market valuation of relevant peer companies would result in directionally similar changes to the fair value. Fair value determinations are reviewed and updated on a regular basis and as information becomes available, including actual purchase and sale transactions of the issue. For certain loan agreements where observable inputs are limited, assumptions about market activity and risk are used and are categorized as Level 3 in the hierarchy.
Foreign Currency Translation The books and records of the Funds are maintained in U.S. dollars. Foreign currency amounts are translated into U.S. dollars on the following basis: market value of investment securities, assets and liabilities at the current rate of exchange; purchases and sales of investment securities, income and expenses at the relevant rates of exchange prevailing on the respective dates of such transactions.
The Funds do not isolate the portion of realized and unrealized gains and losses on investments which is due to changes in the foreign exchange rate from that which is due to changes in market prices of all securities. Such fluctuations are included with net realized and unrealized gain or loss from investments.
Foreign security and currency transactions may involve certain considerations and risks not typically associated with those of U.S. dollar denominated transactions as a result of, among other factors, the level of governmental supervision and regulation of foreign securities markets and the possibility of political or economic instability.
Loan Agreements Certain Funds may invest in loan agreements, also known as bank loans, which represent an interest in amounts owed by a borrower to a syndication of lenders. Bank loans may involve multiple loans with the same borrower under a single credit agreement (each loan, a tranche), and each tranche may have different terms and associated risks. A bank or other financial institution typically acts as the agent and administers a bank loan in accordance with the associated credit agreement. Bank loans are generally noninvestment grade and often involve borrowers whose financial condition is troubled or uncertain and companies that are highly leveraged. The Funds may buy and sell bank loans in the form of either loan assignments or loan participations. A loan assignment transfers all legal, beneficial, and economic rights to the buyer. Although loan assignments continue to be administered by the agent, the buyer acquires direct rights against the borrower. In many cases, a loan assignment requires the consent of both the borrower and the agent. In contrast, a loan participation generally entitles the buyer to receive the cash flows from principal, interest, and any fee payments that the seller is entitled to receive from the borrower; however, the seller continues to hold legal title to the loan. As a result, with loan participations, the buyer generally has no right to enforce compliance with terms of the credit agreement against the borrower, and the buyer is subject to the credit risk of both the borrower and the seller. Bank loans often have extended settlement periods, during which the Fund is subject to nonperformance by the counterparty.
Security Transactions, Investment Income and Expenses Security transactions are accounted for on the trade date. Dividend income is recorded on the ex-dividend date and interest income is accrued as earned. Discounts and premiums are accreted and amortized using the effective interest method. Premiums on callable debt securities are
214



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

amortized to interest income to the earliest call date using the effective interest method. The cost of investment securities sold is determined by using the specific identification method for both financial reporting and income tax purposes. Expenses directly attributable to a Fund are directly charged. Common expenses of the Funds are allocated using methods approved by the Board of Directors, generally based on average net assets. Expenses included in the accompanying financial statements reflect the expenses of each Fund and do not include any expenses associated with the Underlying Funds of the FOFs.
Dividends to Shareholders Except for the Money Market Fund, all or a portion of each Fund’s undistributed net investment income and accumulated net realized gain on investment and foreign exchange transactions, if any, at December 31, 2020 were deemed distributed as consent dividends to each respective Fund’s shareholders in place of regular distributions. As consent dividends, shareholders of each Fund agree to treat their share of undistributed net investment income and accumulated net realized gain on investment and foreign exchange transactions, if any, at December 31, 2020, respectively, as dividend income and net capital gains for tax purposes. In the case of the Money Market Fund, dividends paid from undistributed net investment income and accumulated net realized gain on investments are declared daily and paid monthly.
Dividends from net investment income and distributions from net realized gains are determined in accordance with federal income tax regulations which may differ from net investment income and net realized capital gains recorded in accordance with accounting principles generally accepted in the United States. To the extent that these differences are permanent, such amounts are reclassified within the capital accounts based on their federal tax basis treatment; temporary differences do not require such reclassification. Distributions from net realized gains may involve short-term capital gains, which are included as ordinary income for tax purposes.
The character of distributions received from Real Estate Investment Trusts (“REITs”) held by a Fund is generally comprised of net investment income, capital gains, and return of capital. It is the policy of the Funds to estimate the character of distributions received from the underlying REITs based on historical data provided by the REITs.
Foreign Capital Gains Taxes The International Equity Fund and Emerging Markets Equity Fund accrue capital gains tax on unrealized and realized gains for certain securities of issuers domiciled in India. At December 31, 2020, the Funds had accrued capital gains taxes of $715,201 and $1,146,317, respectively, which is reflected in the Statement of Assets and Liabilities. For the year ended December 31, 2020, the Funds had realized capital gains tax expense of $78,573 and $37,318, respectively, which is reflected in the Statement of Operations.
3 — Investment Advisory and Other Corporate Services
Investment Advisory Services
PMAM serves as investment adviser to each series of Penn Series. With the exception of the Money Market, Limited Maturity, Quality Bond, High Yield Bond, Balanced, Aggressive Allocation, Moderately Aggressive Allocation, Moderate Allocation, Moderately Conservative Allocation and Conservative Allocation Funds, PMAM has entered into sub-advisory agreements to provide investment management services to each of the Funds.
Each of the Funds pay PMAM, on a monthly basis, an advisory fee accrued daily based on the average daily net assets of the Fund, at the following rates pursuant to the investment advisory agreements:
Fund   Sub-Adviser   Investment Advisory Fees
(As a Percentage of the
Average Daily
Net Assets of the Fund)
Money Market Fund   None   0.33% of the first $200,000,000;
0.31% of the next $150,000,000;
0.29% of the next $150,000,000;
0.27% over $500,000,000.
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Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Fund   Sub-Adviser   Investment Advisory Fees
(As a Percentage of the
Average Daily
Net Assets of the Fund)
Limited Maturity Bond Fund   None   0.46% of the first $200,000,000;
0.44% of the next $150,000,000;
0.42% of the next $150,000,000;
0.40% over $500,000,000.
Quality Bond Fund   None   0.46% of the first $200,000,000;
0.44% of the next $150,000,000;
0.42% of the next $150,000,000;
0.40% over $500,000,000.
High Yield Bond Fund   None   0.46% of the first $200,000,000;
0.44% of the next $150,000,000;
0.42% of the next $150,000,000;
0.40% over $500,000,000.
Flexibly Managed Fund   T. Rowe Price Associates, Inc.   0.72% of the first $500,000,000;
0.70% of the next $2,000,000,000;
0.68% of the next $1,500,000,000;
0.65% of the next $1,000,000,000;
0.62% over $5,000,000,000.
Balanced Fund   None   None
Large Growth Stock Fund   T. Rowe Price Associates, Inc.   0.72% of the first $250,000,000;
0.68% of the next $250,000,000;
0.65% over $500,000,000.
Large Cap Growth Fund   Massachusetts Financial Services
Company
  0.55%
Large Core Growth Fund   Morgan Stanley Investment
Management Inc.
  0.60%
Large Cap Value Fund   AllianceBernstein, LP   0.67% of the first $150,000,000;
0.65% over $150,000,000.
Large Core Value Fund   Eaton Vance Management   0.67% of the first $150,000,000;
0.65% of the next $250,000,000;
0.60% over $400,000,000.
Index 500 Fund   SSgA Fund Management, Inc.   0.14% of the first $150,000,000;
0.13% of the next $150,000,000;
0.12% over $300,000,000.
Mid Cap Growth Fund   Ivy Investment Management Company   0.70%
Mid Cap Value Fund   Janus Capital
Management LLC
  0.55% of the first $250,000,000;
0.525% of the next $250,000,000;
0.50% of the next $250,000,000;
0.475% of the next $250,000,000;
0.45% of the next $500,000,000;
0.425% over $1,500,000,000.
Mid Core Value Fund   American Century Investment
Management, Inc.
  0.69%
SMID Cap Growth Fund   Goldman Sachs Asset Management, LP   0.75%
SMID Cap Value Fund   AllianceBernstein, LP   0.84%
Small Cap Growth Fund   Janus Capital Management LLC   0.80% of the first $25,000,000;
0.75% of the next $25,000,000;
0.70% over $50,000,000.
216



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Fund   Sub-Adviser   Investment Advisory Fees
(As a Percentage of the
Average Daily
Net Assets of the Fund)
Small Cap Value Fund   Goldman Sachs Asset Management, LP   0.75% of the first $50,000,000;
0.725% of the next $50,000,000;
0.70% over $100,000,000.
Small Cap Index Fund   SSgA Fund Management, Inc.   0.30%
Developed International Index Fund   SSgA Fund Management, Inc.   0.30%
International Equity Fund*   Vontobel Asset Management, Inc.   0.83% of the first $227,000,000;
0.63% over $227,000,000.
Emerging Markets Equity Fund**   Vontobel Asset Management, Inc.   0.87%
Real Estate Securities Fund   Cohen & Steers Capital Management,
Inc.
  0.70%
Aggressive Allocation Fund   None   0.12% of the first $200,000,000;
0.11% of the next $150,000,000;
0.10% of the next $150,000,000;
0.09% over $500,000,000.
Moderately Aggressive Allocation Fund   None   0.12% of the first $200,000,000;
0.11% of the next $150,000,000;
0.10% of the next $150,000,000;
0.09% over $500,000,000.
Moderate Allocation Fund   None   0.12% of the first $200,000,000;
0.11% of the next $150,000,000;
0.10% of the next $150,000,000;
0.09% over $500,000,000.
Moderately Conservative Allocation Fund   None   0.12% of the first $200,000,000;
0.11% of the next $150,000,000;
0.10% of the next $150,000,000;
0.09% over $500,000,000.
Conservative Allocation Fund   None   0.12% of the first $200,000,000;
0.11% of the next $150,000,000;
0.10% of the next $150,000,000;
0.09% over $500,000,000.
* Effective May 1, 2020. Prior to May 1, 2020, the Fund’s Investment Advisory Fee was 0.83% of the first $227,000,000 and 0.75% over $227,000,000.
** Effective May 1, 2020. Prior to May 1, 2020, the Fund’s Investment Advisory Fee was 0.92% on the average daily net assets of the Fund.
Effective May 1, 2020, Janus Capital Management, LLC replaced Neuberger Berman as Sub-Adviser to the Mid Cap Value Fund and Vontobel Asset Management, Inc. replaced Morgan Stanley as Sub-Adviser to the Emerging Markets Equity Fund.
For providing investment management services to the Funds, PMAM pays each sub-adviser, on a monthly basis, a subadvisory fee.
Administrative and Corporate, Co-Administrative and Shareholder Services
Each of the Funds pays Penn Mutual, on a quarterly basis, 0.01% of the Fund’s average daily net assets under a revised administrative and corporate services agreement and 0.09% under a shareholder servicing agreement. Each of the Funds pays PMAM, on a quarterly basis, 0.02% of the Fund’s average daily assets under a co-administrative agreement. These fees are accrued daily.
217



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Fund Administration and Accounting Services
Under a fund administration and accounting agreement, BNY Mellon Investment Servicing (US), Inc. (“BNY Mellon”) serves as accounting agent for Penn Series. Each of the Funds, except the FOFs, International Equity Fund, Emerging Markets Equity Fund and Developed International Index Fund, pays BNY Mellon, on a monthly basis, an annual fee accrued daily based on the average daily net assets of the Fund equal to 0.070% for the first $100 million, 0.050% for the next $200 million, 0.030% for the next $300 million and 0.020% thereafter. With the exception of the FOFs, International Equity Fund, Emerging Markets Equity Fund, Developed International Index Fund and Money Market Fund, the minimum annual fee each Fund must pay is $27,500. The annual accounting fee for each of the FOFs is an asset-based fee of 0.010% of FOF’s average daily net assets, exclusive of out-of-pocket expenses. Each FOF’s minimum annual fee is $12,000. The minimum annual fee is $48,000 for each of the International Equity Fund, Emerging Markets Equity Fund and Developed International Index Fund. The Money Market Fund pays no minimum annual fee. Each of the International Equity, Emerging Markets Equity and Developed International Index Funds pays BNY Mellon, on a monthly basis, an annual 0.080% for the first $100 million, 0.060% for the next $300 million, 0.040% for the next $200 million, and 0.030% thereafter. In addition, each of the Funds pays BNY Mellon approximately 0.010% of the Fund’s average daily net assets for tax and regulatory administration services.
Transfer Agent Services
Under a transfer agency agreement, BNY Mellon serves as transfer agent for Penn Series.
Custodial Services
The Bank of New York Mellon, Inc., serves as custodian for Penn Series. In addition to transaction charges and out-of-pocket expenses, each of the Funds pay The Bank of New York Mellon, Inc., on a monthly basis, an annual custody fee of 0.007% for U.S. securities. The Bank of New York Mellon, Inc. serves as foreign custodian for Penn Series. There is a separate custody fee schedule for foreign securities.
Expenses and Limitations Thereon
Each Fund bears all expenses of its operations other than those incurred by PMAM and, if applicable its sub-adviser under its respective investment advisory agreement and those incurred by Penn Mutual under its administrative and corporate services agreement. PMAM and Penn Mutual have agreed to waive fees or reimburse expenses to the extent the Fund’s total expense ratio (excluding nonrecurring account fees, fees on portfolio transactions, such as exchange fees, dividends and interest on securities sold short, acquired fund fees and expenses, service fees, interest, taxes, brokerage commissions, other capitalized expenses and other non-routine expenses or extraordinary expenses not incurred in the ordinary course of a Fund’s business, but including investment advisory and administrative and corporate services fees) exceeds the applicable expense limitation for the Fund. The expense limitations for the Funds are as follows:
Fund   Expense Limitation
Money Market Fund   0.64%
Limited Maturity Bond Fund   0.74%
Quality Bond Fund   0.73%
High Yield Bond Fund   0.92%
Flexibly Managed Fund   0.94%
Balanced Fund   0.79%
Large Growth Stock Fund   1.02%
Large Cap Growth Fund   0.89%
Large Core Growth Fund   0.90%
Large Cap Value Fund   0.96%
Large Core Value Fund   0.96%
Index 500 Fund   0.42%
Mid Cap Growth Fund   1.00%
Mid Cap Value Fund   0.83%
Fund   Expense Limitation
Mid Core Value Fund   1.11%
SMID Cap Growth Fund   1.07%
SMID Cap Value Fund   1.26%
Small Cap Growth Fund   1.13%
Small Cap Value Fund   1.02%
Small Cap Index Fund   0.74%
Developed International Index Fund   0.94%
International Equity Fund   1.20%
Emerging Markets Equity Fund   1.78%
Real Estate Securities Fund   1.02%
Aggressive Allocation Fund*   0.40%
Moderately Aggressive Allocation Fund*   0.34%
Moderate Allocation Fund*   0.34%
 
218



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Fund   Expense Limitation
Moderately Conservative Allocation Fund*   0.35%
Fund   Expense Limitation
Conservative Allocation Fund*   0.38%
 
* For FOFs, with the exception of the Balanced Fund, the operating expense limit applies only at the Fund level and does not limit the fees indirectly incurred by the FOFs through their investments in the Underlying Funds.
Effective September 10, 2009, Penn Series, on behalf of its Money Market Fund, PMAM, and Penn Mutual, entered into an agreement whereby PMAM and Penn Mutual may temporarily and voluntarily waive fees and/or reimburse expenses in excess of their current fee waiver and expense reimbursement commitments in an effort to maintain a minimum net distribution yield for the Money Market Fund. Under the agreement, PMAM and Penn Mutual may, subject to certain minimum yield criteria, as well as a prospective three-year reimbursement period, recapture from the Money Market Fund any fees or expenses waived and/or reimbursed under this arrangement. These reimbursement payments by the Fund to PMAM and/or Penn Mutual are considered “extraordinary expenses” and are not subject to any net operating expense limitations in effect at the time of such payment. This recapture could negatively affect the Fund’s future yield.
If, at the end of each month, there is no liability of PMAM and Penn Mutual to pay the Funds such excess amount, and if payments of the advisory fee or administrative and corporate services fee at the end of prior months during the preceding three fiscal years have been reduced in excess of that required to maintain expenses within the expense limitation, such excess reduction is eligible to be recaptured by PMAM and Penn Mutual and, if recaptured, would become payable by the Funds to PMAM and Penn Mutual along with the advisory fee or administrative and corporate services fee for that month, as applicable. Penn Mutual and/or PMAM’s election not to recapture the amount of any reduction and reimbursement to which it is entitled in no way impairs the rights of Penn Mutual and/or PMAM to subsequently recapture such amount, provided that such amount remains eligible for recapture and would not cause the Fund to exceed its expense limit for that fee payment period.
As of December 31, 2020, the Money Market Fund waived and/or reimbursed administrative and corporate services fees that are subject to potential recapture by PMAM and Penn Mutual in the amount of $108,890. If not recaptured, the waiver and/or reimbursed administrative and corporate services fees will expire December 31, 2023.
As of December 31, 2020, the Money Market Fund had waived and/or reimbursed advisory fees that are subject to potential recapture by PMAM in the amount of $294,197. If not recaptured, the waived and/or reimbursed advisory fees will expire on December 31, 2023.
During the year ended December 31, 2020, previously waived advisory fees were recaptured by PMAM. The recaptured fees are shown as Recaptured advisory fees on the statement of operations and are as follows:
   
Small Cap Value Fund $ 1,941
Small Cap Index Fund 5,369
Total fees of $550,000 were paid to Directors of Penn Series, who are not interested persons of Penn Series, for the year ended December 31, 2020. Directors who are also employees of PMAM or its affiliates and officers of the Company receive no compensation from the Company for their services.
4 — Related Party Transactions
Certain benefit plans of Penn Mutual own annuity contracts that are invested in the Penn Series Funds. The benefit plan assets that are invested in the Penn Series Funds at December 31, 2020 are as follows:
   
Money Market Fund $ 8,173,579
Limited Maturity Bond Fund 67,071,701
Quality Bond Fund 54,935,698
Large Growth Stock Fund 20,497,510
219



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

   
Large Core Value Fund $ 21,847,084
Index 500 Fund 20,816,656
SMID Cap Growth Fund 4,949,420
SMID Cap Value Fund 4,313,524
Small Cap Index Fund 4,281,641
Developed International Index Fund 4,121,262
International Equity Fund 6,927,252
Certain Funds affect trades for security purchase and sale transactions through brokers that are affiliates of the Adviser or the sub-advisers. Commissions paid on those trades from the Funds for the year ended December 31, 2020 were as follows:
   
SMID Cap Growth Fund $ 4,814
Small Cap Value Fund 24,666
Cross trades for the year ended December 31, 2020, were executed by the Funds pursuant to procedures adopted by the Board of Directors designed to ensure compliance with Rule 17a-7 under the 1940 Act. Cross trading is the buying or selling of portfolio securities between funds of investment companies, or between a fund of an investment company and another entity, that are or could be considered affiliates by virtue of having a common investment advisor (or affiliated investment advisors), common directors/trustees and/or common officers. At its regularly scheduled meetings, the Board of Directors review such transactions for compliance with the procedures adopted by the Board of Directors. Pursuant to these procedures, for the year ended December 31, 2020, the following Funds engaged in Rule 17a-7 securities purchases and securities sales, which resulted in net realized gain (loss) as follows:
  Purchases   Sales   Gain (Loss)
Flexibly Managed Fund $ 6,721,879   $10,471,307   $(272,678)
Large Growth Stock Fund   164,455  
Large Cap Growth Fund 292,540    
A Summary of the FOF’s total long-term and short-term purchases and sales of the shares of the underlying Funds during the year ended December 31, 2020 as follows:
Balanced Fund   Total
Value at
12/31/19
  Purchases   Sales
Proceeds
  Realized
Gain (Loss)
  Net Change in
Unrealized
Appreciation
(Depreciation)
  Total
Value at
12/31/20
  Number of
Shares
  Dividend
Income
Affiliated Equity Funds — 59.8%                        
Penn Series Index 500 Fund*   $ 49,001,759   $ 5,025,509   $ 12,359,010   $ 8,915,392   $ (165,559)   $50,418,091   1,560,448   $—
Affiliated Fixed Income Funds — 39.3%                        
Penn Series Quality Bond Fund*   31,970,061   6,506,945   7,847,408   2,868,441   (364,990)   33,133,049   1,908,586  
    $80,971,820   $11,532,454   $20,206,418   $11,783,833   $ (530,549)   $ 83,551,140       $—
* Non-income producing security.
Aggressive Allocation Fund   Total
Value at
12/31/19
  Purchases   Sales
Proceeds
  Realized
Gain (Loss)
  Net Change in
Unrealized
Appreciation
(Depreciation)
  Total
Value at
12/31/20
  Number of
Shares
  Dividend
Income
Affiliated Equity Funds — 57.7%                        
Penn Series Flexibly Managed Fund*   $ 2,144,523   $ 121,063   $ 478,023   $ 176,105   $ 128,252   $ 2,091,920   27,126   $—
Penn Series Index 500 Fund*   3,607,020   4,762,347   931,562   679,157   991,693   9,108,655   281,914  
Penn Series Large Cap Growth Fund*   2,157,581   88,810   520,170   244,294   135,203   2,105,718   68,904  
Penn Series Large Cap Value Fund*   6,452,334   443,209   1,421,771   537,436   (485,549)   5,525,659   166,737  
Penn Series Large Core Value Fund*   6,443,737   462,239   1,402,574   401,960   (332,158)   5,573,204   240,432  
Penn Series Large Growth Stock Fund*   724,920   19,439   244,201   118,144   85,022   703,324   9,853  
Penn Series Mid Cap Growth Fund*   1,442,281   29,443   611,612   323,177   223,491   1,406,780   35,878  
220



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Aggressive Allocation Fund   Total
Value at
12/31/19
  Purchases   Sales
Proceeds
  Realized
Gain (Loss)
  Net Change in
Unrealized
Appreciation
(Depreciation)
  Total
Value at
12/31/20
  Number of
Shares
  Dividend
Income
Penn Series Mid Cap Value Fund*   $ 1,447,626   $ 301,058   $ 235,435   $ (16,766)   $ (105,656)   $ 1,390,827   59,949   $—
Penn Series Mid Core Value Fund*   5,026,504   478,642   807,107   221,730   (100,666)   4,819,103   176,072  
Penn Series Real Estate Securities Fund*   2,201,429   431,018   460,852   149,529   (236,817)   2,084,307   79,041  
Penn Series Small Cap Growth Fund*   2,151,232   136,274   770,697   346,156   262,257   2,125,222   33,917  
Penn Series Small Cap Value Fund*   1,443,792   207,195   881,115   42,548   (120,434)   691,986   17,197  
Penn Series SMID Cap Growth Fund*   1,433,571   29,443   634,353   330,641   246,194   1,405,496   26,833  
Penn Series SMID Cap Value Fund*   5,035,220   110,812   2,951,462   (167,397)   (648,000)   1,379,173   47,921  
Affiliated Fixed Income Funds — 8.8%                        
Penn Series High Yield Bond Fund*   1,425,363   936,624   370,722   64,538   21,964   2,077,767   129,698  
Penn Series Limited Maturity Bond Fund*   4,959,730   817,792   1,795,400   129,696   23,880   4,135,698   310,255  
Affiliated International Equity Funds — 33.0%                        
Penn Series Developed International Index Fund*   8,576,016   640,166   1,477,260   392,759   260,157   8,391,838   526,464  
Penn Series Emerging Markets Equity Fund*   6,520,803   445,318   1,321,599   269,407   352,111   6,266,040   419,695  
Penn Series International Equity Fund*   8,618,417   533,965   1,763,056   618,722   450,449   8,458,497   216,773  
    $71,812,099   $10,994,857   $19,078,971   $4,861,836   $ 1,151,393   $69,741,214       $—
* Non-income producing security.
Moderately Aggressive Allocation Fund   Total
Value at
12/31/19
  Purchases   Sales
Proceeds
  Realized
Gain (Loss)
  Net Change in
Unrealized
Appreciation
(Depreciation)
  Total
Value at
12/31/20
  Number of
Shares
  Dividend
Income
Affiliated Equity Funds — 56.7%                        
Penn Series Flexibly Managed Fund*   $ 13,830,353   $ 431,199   $ 2,661,690   $ 1,498,186   $ 479,269   $ 13,577,317   176,054   $—
Penn Series Index 500 Fund*   11,631,878   13,226,512   2,276,479   1,657,680   3,044,594   27,284,185   844,450  
Penn Series Large Cap Growth Fund*   6,957,535   188,710   1,551,908   893,583   344,743   6,832,663   223,582  
Penn Series Large Cap Value Fund*   20,806,664   1,658,350   4,749,744   2,579,032   (2,361,447)   17,932,855   541,124  
Penn Series Large Core Value Fund*   20,778,742   1,705,799   4,686,679   1,379,785   (1,090,952)   18,086,695   780,272  
Penn Series Large Growth Stock Fund*   2,337,825   37,292   752,460   365,322   293,907   2,281,886   31,968  
Penn Series Mid Cap Growth Fund*   4,651,175   74,584   1,931,719   1,017,534   752,271   4,563,845   116,395  
Penn Series Mid Cap Value Fund*   2,334,274   484,845   374,778   (30,395)   (157,085)   2,256,861   97,279  
Penn Series Mid Core Value Fund*   13,893,322   1,433,601   2,299,007   733,953   (356,145)   13,405,724   489,796  
Penn Series Real Estate Securities Fund*   7,099,193   1,178,280   1,244,459   582,049   (850,397)   6,764,666   256,529  
Penn Series Small Cap Growth Fund*   4,624,797   372,148   1,718,556   833,224   484,889   4,596,502   73,356  
Penn Series Small Cap Index Fund*   2,324,622   266,826   804,099   271,405   192,740   2,251,494   74,800  
Penn Series Small Cap Value Fund*   4,656,163   705,583   2,883,033   680,219   (913,155)   2,245,777   55,810  
Penn Series SMID Cap Growth Fund*   2,311,431   37,292   1,002,516   474,050   459,512   2,279,769   43,524  
Penn Series SMID Cap Value Fund*   13,917,895   205,286   7,777,184   (629,336)   (1,240,370)   4,476,291   155,535  
Affiliated Fixed Income Funds — 17.8%                        
Penn Series High Yield Bond Fund*   4,596,082   2,862,359   996,928   228,275   52,883   6,742,671   420,891  
Penn Series Limited Maturity Bond Fund*   25,129,800   3,587,611   7,124,203   547,365   228,019   22,368,592   1,678,064  
Penn Series Quality Bond Fund*   11,383,316   2,380,896   3,387,168   596,903   232,348   11,206,295   645,524  
Affiliated International Equity Funds — 25.0%                        
Penn Series Developed International Index Fund*   20,740,421   1,784,719   3,753,042   1,133,226   517,195   20,422,519   1,281,212  
Penn Series Emerging Markets Equity Fund*   14,019,467   1,078,620   2,905,269   392,814   969,828   13,555,460   907,934  
Penn Series International Equity Fund*   23,159,513   1,289,813   4,515,000   1,882,668   1,052,665   22,869,659   586,101  
    $231,184,468   $34,990,325   $59,395,921   $17,087,542   $ 2,135,312   $226,001,726       $—
* Non-income producing security.
    
221



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Moderate Allocation Fund   Total
Value at
12/31/19
  Purchases   Sales
Proceeds
  Realized
Gain (Loss)
  Net Change in
Unrealized
Appreciation
(Depreciation)
  Total
Value at
12/31/20
  Number of
Shares
  Dividend
Income
Affiliated Equity Funds — 44.8%                        
Penn Series Flexibly Managed Fund*   $ 17,902,516   $ 178,273   $ 3,624,930   $ 2,142,373   $ 503,526   $ 17,101,758   221,755   $—
Penn Series Index 500 Fund*   12,045,036   14,602,285   3,496,484   2,575,045   2,913,274   28,639,156   886,387  
Penn Series Large Cap Growth Fund*   6,003,946   120,052   1,493,289   600,472   506,454   5,737,635   187,750  
Penn Series Large Cap Value Fund*   17,955,045   1,909,162   5,785,002   2,239,210   (2,201,115)   14,117,300   425,990  
Penn Series Large Core Value Fund*   17,931,038   1,958,668   5,777,730   1,637,720   (1,511,350)   14,238,346   614,251  
Penn Series Large Growth Stock Fund*   3,026,001   29,661   1,066,336   831,472   53,576   2,874,374   40,269  
Penn Series Mid Cap Growth Fund*   6,020,391   247,220   2,893,577   1,556,414   818,412   5,748,860   146,617  
Penn Series Mid Core Value Fund*   20,980,932   2,722,649   4,645,992   1,463,742   (821,682)   19,699,649   719,753  
Penn Series Real Estate Securities Fund*   6,125,947   738,766   946,439   582,895   (820,818)   5,680,351   215,410  
Penn Series Small Cap Growth Fund*   2,993,136   351,375   1,328,663   896,706   (17,509)   2,895,045   46,202  
Penn Series Small Cap Index Fund*   3,008,884   456,682   1,250,510   468,805   152,135   2,835,996   94,219  
Penn Series Small Cap Value Fund*   6,026,729   1,095,137   4,002,506   537,058   (827,712)   2,828,706   70,296  
Penn Series SMID Cap Growth Fund*   2,991,902   125,975   1,494,261   708,339   539,805   2,871,760   54,826  
Penn Series SMID Cap Value Fund*   12,010,168   61,098   7,143,779   (811,043)   (1,297,374)   2,819,070   97,952  
Affiliated Fixed Income Funds — 37.5%                        
Penn Series High Yield Bond Fund*   8,924,078   3,595,895   1,755,597   594,103   (34,405)   11,324,074   706,871  
Penn Series Limited Maturity Bond Fund*   44,359,363   5,109,971   11,424,257   960,022   440,490   39,445,589   2,959,159  
Penn Series Quality Bond Fund*   58,942,961   9,486,724   16,366,161   3,597,246   800,975   56,461,745   3,252,405  
Affiliated International Equity Funds — 17.0%                        
Penn Series Developed International Index Fund*   14,915,198   1,834,386   3,731,042   1,366,311   (93,451)   14,291,402   896,575  
Penn Series Emerging Markets Equity Fund*   15,122,101   1,516,035   3,928,113   1,007,301   511,265   14,228,589   953,020  
Penn Series International Equity Fund*   20,984,824   1,520,983   5,133,719   2,556,741   236,384   20,165,213   516,791  
    $298,270,196   $47,660,997   $87,288,387   $25,510,932   $ (149,120)   $284,004,618       $—
* Non-income producing security.
Moderately Conservative Allocation Fund   Total
Value at
12/31/19
  Purchases   Sales
Proceeds
  Realized
Gain (Loss)
  Net Change in
Unrealized
Appreciation
(Depreciation)
  Total
Value at
12/31/20
  Number of
Shares
  Dividend
Income
Affiliated Equity Funds — 32.8%                        
Penn Series Flexibly Managed Fund*   $ 7,502,879   $ 774,081   $ 1,944,651   $ 1,249,156   $ (51,446)   $ 7,530,019   97,640   $—
Penn Series Index 500 Fund*   2,839,542   2,897,687   1,244,204   473,031   708,474   5,674,530   175,628  
Penn Series Large Cap Growth Fund*   1,887,180   257,988   626,414   236,652   139,348   1,894,754   62,001  
Penn Series Large Cap Value Fund*   5,643,688   1,164,377   2,210,556   341,798   (277,384)   4,661,923   140,673  
Penn Series Large Core Value Fund*   5,636,148   1,228,031   2,253,833   479,112   (387,557)   4,701,901   202,843  
Penn Series Mid Core Value Fund*   2,826,357   678,240   836,217   251,306   (131,670)   2,788,016   101,864  
Penn Series Real Estate Securities Fund*   1,925,538   315,196   295,033   170,200   (240,025)   1,875,876   71,137  
Penn Series Small Cap Value Fund*   947,188   286,147   381,347   40,059   42,081   934,128   23,214  
Penn Series SMID Cap Value Fund*   1,887,557   97,980   837,624   (128,971)   (87,996)   930,946   32,347  
Affiliated Fixed Income Funds — 56.2%                        
Penn Series High Yield Bond Fund*   2,805,035   2,152,412   480,637   181,977   15,682   4,674,469   291,790  
Penn Series Limited Maturity Bond Fund*   23,238,329   3,638,018   6,244,597   684,845   83,685   21,400,280   1,605,422  
Penn Series Quality Bond Fund*   26,863,938   4,861,248   6,767,772   1,519,225   559,484   27,036,123   1,557,380  
Affiliated International Equity Funds — 10.0%                        
Penn Series Developed International Index Fund*   2,812,867   680,562   946,167   326,141   (41,802)   2,831,601   177,641  
Penn Series Emerging Markets Equity Fund*   1,901,327   370,487   607,509   80,961   134,206   1,879,472   125,886  
Penn Series International Equity Fund*   4,711,408   837,933   1,482,425   446,667   242,945   4,756,528   121,900  
    $ 93,428,981   $20,240,387   $27,158,986   $6,352,159   $ 708,025   $93,570,566       $—
* Non-income producing security.
    
222



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Conservative Allocation Fund   Total
Value at
12/31/19
  Purchases   Sales
Proceeds
  Realized
Gain (Loss)
  Net Change in
Unrealized
Appreciation
(Depreciation)
  Total
Value at
12/31/20
  Number of
Shares
  Dividend
Income
Affiliated Equity Funds — 19.7%                        
Penn Series Flexibly Managed Fund*   $ 4,758,720   $ 1,151,030   $ 1,857,433   $ 702,310   $ 117,237   $ 4,871,864   63,172   $—
Penn Series Index 500 Fund*   600,339   1,992,501   710,956   60,245   505,451   2,447,580   75,753  
Penn Series Large Cap Value Fund*   1,789,751   549,102   1,120,733   (5,499)   (6,125)   1,206,496   36,406  
Penn Series Large Core Value Fund*   2,383,156   782,306   1,379,930   174,521   (134,775)   1,825,278   78,744  
Penn Series Mid Core Value Fund*   1,195,070   447,446   511,048   124,171   (53,087)   1,202,552   43,937  
Penn Series Real Estate Securities Fund*   610,637   156,609   144,909   23,057   (38,559)   606,835   23,012  
Penn Series SMID Cap Value Fund*   598,587   14,452   435,136   (148,299)   (29,604)      
Affiliated Fixed Income Funds — 75.0%                        
Penn Series High Yield Bond Fund*   1,779,107   1,581,945   474,323   133,722   3,797   3,024,248   188,780  
Penn Series Limited Maturity Bond Fund*   20,634,913   4,771,670   6,250,433   560,800   148,030   19,864,980   1,490,246  
Penn Series Quality Bond Fund*   22,914,494   5,372,636   6,570,456   1,370,470   435,882   23,523,026   1,355,013  
Affiliated International Equity Funds — 3.0%                        
Penn Series Developed International Index Fund*   1,189,390   448,984   558,424   93,143   48,244   1,221,337   76,621  
Penn Series International Equity Fund*   597,640   187,636   266,781   66,245   30,725   615,465   15,773  
    $59,051,804   $17,456,317   $20,280,562   $3,154,886   $1,027,216   $60,409,661       $—
* Non-income producing security.
5 — Purchases and Sales of Securities
During the year ended December 31, 2020, the Funds made the following purchases and sales of portfolio securities, other than short-term securities:
  U.S. Government Securities   Other Investment Securities
  Purchases   Sales   Purchases   Sales
Limited Maturity Bond Fund $ 22,457,295   $ 27,051,158   $ 198,316,619   $ 201,248,749
Quality Bond Fund 100,531,258   87,007,520   242,140,512   240,023,374
High Yield Bond Fund     183,972,845   186,900,495
Flexibly Managed Fund     3,503,687,631   3,774,664,123
Balanced Fund     11,532,454   20,206,418
Large Growth Stock Fund     122,279,153   165,033,918
Large Cap Growth Fund     20,507,523   27,601,983
Large Core Growth Fund     122,159,182   142,425,891
Large Cap Value Fund     86,360,953   87,938,406
Large Core Value Fund     134,766,763   149,650,101
Index 500 Fund     112,631,934   97,491,731
Mid Cap Growth Fund     40,485,200   59,345,758
Mid Cap Value Fund     106,034,962   113,057,866
Mid Core Value Fund     64,241,699   68,824,198
SMID Cap Growth Fund     73,144,561   82,304,650
SMID Cap Value Fund     32,452,384   54,115,034
Small Cap Growth Fund     31,948,881   38,656,817
Small Cap Value Fund     135,338,957   158,106,757
Small Cap Index Fund     17,148,946   22,029,799
Developed International Index Fund     4,561,180   11,153,974
International Equity Fund     220,954,250   249,506,199
Emerging Markets Equity Fund     155,713,584   173,759,283
Real Estate Securities Fund     72,883,666   75,218,271
Aggressive Allocation Fund     10,994,857   19,078,971
Moderately Aggressive Allocation Fund     34,990,325   59,395,921
223



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

  U.S. Government Securities   Other Investment Securities
  Purchases   Sales   Purchases   Sales
Moderate Allocation Fund $   $   $ 47,660,997   $ 87,288,387
Moderately Conservative Allocation Fund     20,240,387   27,158,986
Conservative Allocation Fund     17,456,317   20,280,562
6 — Federal Income Taxes
Each Fund has qualified and intends to continue to qualify as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code for federal income tax purposes. As such, each Fund is required to distribute all investment company taxable income and net capital gains, if any, to its shareholders in order to avoid the imposition of entity-level federal, state, and local income taxes as well as an entity-level excise tax. Except for the Money Market Fund, to the extent any Fund had undistributed investment company taxable income and net capital gains at December 31, 2020, such undistributed investment company taxable income and net capital gains were deemed distributed as consent dividends in place of regular distributions. Accordingly, no provision has been made for federal, state, or local income and excise taxes.
On December 22, 2010, The Regulated Investment Company Modernization Act of 2010 (the “Act”) was signed into law. The Act amended several tax rules impacting the Funds. Some highlights of the enacted provisions are as follows:
The Act allows for capital losses occurring in the taxable years beginning after December 22, 2010 (“post-enactment losses”) to be carried forward indefinitely. However, the Act requires any future gains to be first offset by post-enactment losses before using capital losses incurred in the taxable years beginning prior to the effective date of the Act (“pre-enactment losses”). As a result of this ordering rule, pre-enactment loss carryforwards have an increased likelihood to expire unused. Furthermore, post-enactment losses will retain their character as either long-term capital losses or short-term capital losses rather than being considered all short-term capital losses as under previous law.
The Act provides that a RIC may elect for any taxable year to treat any portion of any qualified late-year loss for such taxable year as arising on the first day of the following taxable year. The term “qualified late-year loss” means any post-October capital loss and any late-year ordinary loss.
The Act also contains simplification provisions, which are aimed at preventing disqualification of a RIC for “inadvertent” failures of the asset diversification and/or qualifying income tests.
Reclassification of Capital Accounts:
Dividends from net investment income and distributions from net realized capital gains are determined in accordance with U.S. federal income tax regulations, which may differ from those amounts determined under U.S. GAAP. These book/ tax differences are either temporary or permanent in nature. To the extent these differences are permanent, they are charged or credited to paid-in capital or accumulated net realized gain or net investment income, as appropriate, in the period that the differences arise. Accordingly, the following permanent differences as of December 31, 2020, primarily attributable to consent dividends, were reclassed between the following accounts:
  Total
distributable
earnings
(loss)
  Increase
(Decrease)
Paid-in Capital
Limited Maturity Bond Fund $ (8,601,790)   $ 8,601,790
Quality Bond Fund (24,866,405)   24,866,405
High Yield Bond Fund (7,123,023)   7,123,023
Flexibly Managed Fund (612,200,192)   612,200,192
Balanced Fund (11,110,923)   11,110,923
Large Growth Stock Fund (33,376,183)   33,376,183
Large Cap Growth Fund (8,536,126)   8,536,126
Large Core Growth Fund (44,953,181)   44,953,181
224



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

  Total
distributable
earnings
(loss)
  Increase
(Decrease)
Paid-in Capital
Large Cap Value Fund $ (1,996,799)   $ 1,996,799
Large Core Value Fund (4,367,897)   4,367,897
Index 500 Fund (74,746,105)   74,746,105
Mid Cap Growth Fund (22,594,141)   22,594,141
Mid Cap Value Fund (1,005,956)   1,005,956
Mid Core Value Fund (1,549,102)   1,549,102
SMID Cap Growth Fund (18,139,095)   18,139,095
SMID Cap Value Fund (455,151)   455,151
Small Cap Growth Fund (7,305,117)   7,305,117
Small Cap Value Fund (938,778)   938,778
Small Cap Index Fund (8,473,315)   8,473,315
Developed International Index Fund (3,893,422)   3,893,422
International Equity Fund (25,573,923)   25,573,923
Emerging Markets Equity Fund (1,149,422)   1,149,422
Real Estate Securities Fund (1,834,015)   1,834,015
Aggressive Allocation Fund (4,617,792)   4,617,792
Moderately Aggressive Allocation Fund (16,362,091)   16,362,091
Moderate Allocation Fund (24,496,878)   24,496,878
Moderately Conservative Allocation Fund (6,016,468)   6,016,468
Conservative Allocation Fund (2,971,323)   2,971,323
These reclassifications had no effect on net assets or net asset value per share.
Tax character of distributions:
The tax character of dividends and distributions declared and paid or deemed distributed during the years ended December 31, 2020 and 2019 were as follows:
  Ordinary Income and
Short-Term Capital Gains
  Long-Term Capital Gains   Total
  2020   2019   2020   2019   2020   2019
Money Market Fund $ 280,484   $ 1,635,471   $   $   $ 280,484   $ 1,635,471
Limited Maturity Bond Fund 7,034,384   7,466,688   1,567,406     8,601,790   7,466,688
Quality Bond Fund 18,022,139   16,119,199   6,844,266   930,536   24,866,405   17,049,735
High Yield Bond Fund 7,123,023   7,655,189       7,123,023   7,655,189
Flexibly Managed Fund 170,953,177   113,162,273   441,249,176   306,749,828   612,202,353   419,912,101
Balanced Fund 1,750,694   1,824,970   17,384,260   11,045,108   19,134,954   12,870,078
Large Growth Stock Fund 4,837,204     28,538,979   25,691,548   33,376,183   25,691,548
Large Cap Growth Fund 127,140   249,533   8,408,992   8,003,073   8,536,132   8,252,606
Large Core Growth Fund 19,399,794   2,050,338   25,553,387   16,434,131   44,953,181   18,484,469
Large Cap Value Fund 1,996,799   2,002,810     1,513,721   1,996,799   3,516,531
225



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

  Ordinary Income and
Short-Term Capital Gains
  Long-Term Capital Gains   Total
  2020   2019   2020   2019   2020   2019
Large Core Value Fund $ 2,825,057   $ 5,965,127   $ 1,542,840   $ 10,102,251   $ 4,367,897   $ 16,067,378
Index 500 Fund 7,995,616   8,049,998   66,750,489   32,391,449   74,746,105   40,441,447
Mid Cap Growth Fund   1,247,910   23,161,228   10,206,138   23,161,228   11,454,048
Mid Cap Value Fund 1,005,956   1,655,595       1,005,956   1,655,595
Mid Core Value Fund 986,874   1,347,832   562,228     1,549,102   1,347,832
SMID Cap Growth Fund 8,305,898   371,139   9,833,197   7,737,080   18,139,095   8,108,219
SMID Cap Value Fund 455,151   563,622     4,142,138   455,151   4,705,760
Small Cap Growth Fund     7,325,859   5,629,113   7,325,859   5,629,113
Small Cap Value Fund 938,778   1,413,710     15,048,386   938,778   16,462,096
Small Cap Index Fund 1,170,684   888,792   7,302,631   9,238,646   8,473,315   10,127,438
Developed International Index Fund 1,986,014   2,879,486   1,907,408   2,697,215   3,893,422   5,576,701
International Equity Fund 2,186,488   1,537,154   23,387,435   19,705,544   25,573,923   21,242,698
Emerging Markets Equity Fund 1,149,422   810,574     3,787,263   1,149,422   4,597,837
Real Estate Securities Fund 1,834,015   6,875,946     13,573,504   1,834,015   20,449,450
Aggressive Allocation Fund 839,709   948,119   7,600,653   8,540,457   8,440,362   9,488,576
Moderately Aggressive Allocation Fund 3,243,583   3,679,730   25,962,614   32,228,790   29,206,197   35,908,520
Moderate Allocation Fund 5,393,187   5,967,423   35,292,752   36,041,566   40,685,939   42,008,989
Moderately Conservative Allocation Fund 2,151,240   2,331,930   8,796,197   7,908,345   10,947,437   10,240,275
Conservative Allocation Fund 1,699,850   1,693,608   4,372,679   3,485,940   6,072,529   5,179,548
Short-term gain distributions to shareholders are treated as ordinary income for tax purposes.
Capital loss carryforwards:
At December 31, 2020, the following Funds had capital loss carryforwards (post-enactment losses) available to offset future realized capital gains:
226



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

  Short-Term
Capital Loss
  Long-Term
Capital Loss
Money Market Fund $ (80)   $
High Yield Bond Fund (3,687,517)   (2,880,707)
Large Cap Value Fund (4,096,562)   (863,815)
Mid Cap Value Fund (648,512)   (19,764,201)
SMID Cap Value Fund   (8,005,009)
Small Cap Value Fund (2,134,627)  
Real Estate Securities Fund (3,595,565)  
During the year ended December 31, 2020, the following Funds utilized capital loss carryforwards to offset realized capital gains for federal income tax purposes in the following approximate amounts:
   
High Yield Bond Fund $ 793,027
Tax cost of securities:
At December 31, 2020, the total cost of securities and net realized gains or losses on securities sold for federal income tax purposes were different from amounts reported for financial reporting purposes. The federal tax cost, aggregate gross unrealized appreciation and depreciation of securities held by each Fund at December 31, 2020 were as follows:
  Federal
Tax Cost
  Unrealized
Appreciation
  Unrealized
Depreciation
  Net Unrealized
Appreciation/
Depreciation
Money Market Fund $ 160,352,430   $ 1   $   $ 1
Limited Maturity Bond Fund 255,093,529   3,074,595   (3,636,322)   (561,727)
Quality Bond Fund 453,904,696   22,157,628   (1,292,320)   20,865,308
High Yield Bond Fund 153,390,116   9,446,386   (207,994)   9,238,392
Flexibly Managed Fund 4,090,951,608   861,471,919   (52,947,559)   808,524,360
Balanced Fund 50,903,317   33,199,890   (214,251)   32,985,639
Large Growth Stock Fund 218,561,336   188,303,361   (1,946,903)   186,356,458
Large Cap Growth Fund 42,858,196   25,580,179   (99,870)   25,480,309
Large Core Growth Fund 148,292,841   76,283,672   (1,593,512)   74,690,160
Large Cap Value Fund 150,639,810   33,089,974   (4,915,842)   28,174,132
Large Core Value Fund 155,986,795   28,031,766   (4,495,403)   23,536,363
Index 500 Fund 302,075,592   312,351,088   (20,045,653)   292,305,435
Mid Cap Growth Fund 104,724,042   95,208,455   (955,118)   94,253,337
Mid Cap Value Fund 76,062,403   20,018,417   (757,637)   19,260,780
Mid Core Value Fund 83,211,141   13,162,112   (2,417,162)   10,744,950
SMID Cap Growth Fund 69,181,778   28,838,243   (671,509)   28,166,734
SMID Cap Value Fund 52,756,498   10,127,012   (3,692,023)   6,434,989
Small Cap Growth Fund 79,892,189   66,983,605   (1,180,311)   65,803,294
Small Cap Value Fund 154,401,308   41,664,332   (10,131,964)   31,532,368
Small Cap Index Fund 58,517,737   27,707,292   (7,939,148)   19,768,144
Developed International Index Fund 79,260,865   43,357,008   (14,264,155)   29,092,853
International Equity Fund 254,711,541   80,732,841   (3,008,428)   77,724,413
Emerging Markets Equity Fund 109,131,544   41,180,632   (4,168,330)   37,012,302
Real Estate Securities Fund 106,411,788   14,892,850   (2,314,191)   12,578,659
Aggressive Allocation Fund 53,312,034   16,930,530   (98,681)   16,831,849
Moderately Aggressive Allocation Fund 168,166,955   59,016,846   (210,671)   58,806,175
Moderate Allocation Fund 214,346,006   70,972,020   (170,709)   70,801,311
227



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

  Federal
Tax Cost
  Unrealized
Appreciation
  Unrealized
Depreciation
  Net Unrealized
Appreciation/
Depreciation
Moderately Conservative Allocation Fund $ 76,937,900   $ 17,458,057   $ (60,097)   $ 17,397,960
Conservative Allocation Fund 53,312,534   7,811,501   (25,360)   7,786,141
The differences between book basis and tax basis appreciation are primarily due to wash sales, Passive Foreign Investment Companies, Partnership Investments, Trust Preferred Securities, real estate investment trust adjustments, and the treatment of certain corporate actions.
It is each Fund’s policy to continue to comply with the requirements of the Internal Revenue Code under Subchapter M, applicable to regulated investment companies, and to distribute all of its taxable income, including any net realized gains on investments, to its shareholders. Therefore, no provision is made for federal income taxes.
Management of the Funds has reviewed tax positions taken in tax years that remain subject to examination by all major tax jurisdictions, including federal (i.e., the last four tax year ends and the interim tax period since then, as applicable). Management believes that there is no tax liability resulting from unrecognized tax benefits related to uncertain tax positions taken.
7 — Derivative Financial Instruments
The Funds may trade derivative financial instruments in the normal course of investing activities to assist in managing exposure to market risks such as interest rates and foreign currency exchange rates. These financial instruments include purchase options, written options, forward foreign currency exchange contracts and futures contracts.
The notional or contractual amounts of these instruments represent the investment the Funds have in particular classes of financial instruments and do not necessarily represent the amounts potentially subject to risk. The measurement of the risks associated with these instruments is meaningful only when all related and offsetting transactions are considered.
Futures ContractsA futures contract is a standardized contract between two parties to buy or sell a specified asset at a specified future date at a price agreed today (the future price). The party agreeing to buy the underlying asset in the future assumes a long position. The price is determined by the instantaneous equilibrium between the forces of supply and demand among competing buy and sell orders on the exchange at the time of the purchase or sale of the contract.
To the extent permitted by the investment objective, restrictions and policies set forth in the Funds’ Prospectus and Statement of Additional Information, the Funds may participate in various derivative-based transactions. The Index 500, Developed International Index and Small Cap Index Funds employ futures to maintain market exposure and otherwise assist in attempting to replicate the performance of their respective indices. These derivatives offer unique characteristics and risks that assist the Funds in meeting their investment objectives. The Funds typically use derivatives in two ways: cash equitization and return enhancement. Cash equitization is a technique that may be used by the Funds through the use of futures contracts to earn “market-like” returns with the Funds’ excess and liquidity reserve cash balances and receivables. Return enhancement can be accomplished through the use of derivatives in the Funds. By purchasing these instruments, the Funds may more effectively achieve the desired fund characteristics that assist in meeting the Funds’ investment objectives.
Futures contracts involve a number of risks, such as possible default by the counterparty to the transaction, credit risk with respect to initial and variation margins held in a brokerage account, market movement and the potential of greater loss than if these techniques had not been used by a Fund. These investments can also increase the Fund’s share price and expose the Fund to significant additional costs.
The Limited Maturity Bond, Quality Bond, Index 500, Small Cap Index and Developed International Index Funds have entered into futures contracts during the year ended December 31, 2020. Open futures contracts held by the
228



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

Limited Maturity Bond, Quality Bond, Index 500, Small Cap Index and Developed International Index Funds at December 31, 2020 are listed after the Fund’s Schedule of Investments.
OptionsAn option establishes a contract between two parties concerning the buying or selling of an asset at a reference price. The buyer of the option gains the right, but not the obligation, to engage in some specific transaction on the asset, while the seller incurs the obligation to fulfill the transaction if so requested by the buyer. The price of an option derives from the difference between the reference price and the value of the underlying asset plus a premium based on the time remaining until the expiration of the option. The Funds may buy and sell options, or write options.
Options are valued daily based upon the last sale price on the principal exchange on which the option is traded. The difference between the premium received or paid, and market value of the option, is recorded as unrealized appreciation or depreciation. The net change in unrealized appreciation or depreciation is reported in the Statements of Operations. When an option is exercised, the cost of the security purchased or the proceeds of the security sale are adjusted by the amount of premium received or paid. Upon the expiration or closing of the option transaction, a gain or loss is reported in the Statements of Operations.
The Flexibly Managed and Mid Cap Growth Funds received premiums for options written. The risk in writing a call option is that the Funds give up the opportunity for profit if the market price of the security increases and the option is exercised. The risk in writing a put option is that the Funds may incur a loss if the market price of the security decreases and the option is exercised. The risk in buying an option is that the Funds pay a premium whether or not the option is exercised. The Funds also have the additional risk that there may be an illiquid market where the Funds are unable to close the contract.
The total market value of written options held in the Flexibly Managed Fund as of December 31, 2020 can be found on the Schedule of Investments.
Forward Foreign Currency ContractsA forward currency contract involves an obligation to purchase or sell a specific currency at a future date, which may be any number of days from the date of the contract agreed upon by the parties, at a price set at the time of the contract. These contracts are traded directly between currency traders and their customers. The contract is marked-to-market daily and the change in market value is recorded by each Fund as an unrealized gain or loss. When the contract is closed or offset with the same counterparty, the Fund records a realized gain or loss equal to the change in the value of the contract when it was opened and the value at the time it was closed or offset.
The Mid Core Value Fund and Emerging Markets Equity Fund entered into forward currency contracts in conjunction with the planned purchase or sale of foreign denominated securities in order to hedge the U.S. dollar cost or proceeds. The Fund hedged currencies in times of base currency weakness in order to reduce the volatility of returns for the local securities which the Fund owns.
Foreign forward currency contracts involve a number of risks, including the possibility of default by the counterparty to the transaction and, to the extent the portfolio manager’s judgment as to certain market movements is incorrect, the risk of losses that are greater than if the investment technique had not been used. For example, there may be an imperfect correlation between the Fund’s portfolio holdings of securities denominated in a particular currency and the forward contracts entered into by the Fund. An imperfect correlation of this type may prevent the Fund from achieving the intended hedge or expose the Fund to the risk of currency exchange loss. These investment techniques also tend to limit any potential gain that might result from an increase in the value of the hedged position. These investments can also increase the volatility of the Fund’s share price and expose the Fund to significant additional costs. The forward foreign currency contracts outstanding are listed after the Fund’s Schedule of Investments.
The following is a summary of the location of derivatives on the Funds’ Statements of Assets and Liabilities as of December 31, 2020:
    Location on the Statements of Assets and Liabilities
Derivative Type   Asset Derivatives   Liability Derivatives
Equity contracts   Investments at value
Futures variation margin receivable*
  Call options written, at value
Futures variation margin payable*
229



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

    Location on the Statements of Assets and Liabilities
Derivative Type   Asset Derivatives   Liability Derivatives
Foreign currency contracts   Net unrealized appreciation of forward
foreign currency contracts
  Net unrealized depreciation of forward
foreign currency contracts
Interest rate contracts   Futures variation margin receivable*   Futures variation margin payable*
* Includes cumulative appreciation/depreciation of futures contracts as reported in the footnotes. Only current day’s variation margin is reported within the Statements of Assets and Liabilities.
For financial reporting purposes, the Funds do not offset derivative assets and derivative liabilities that are subject to netting arrangements in the Statements of Assets and Liabilities. The following is a summary of the gross amount of each Fund’s derivative instrument holdings categorized by primary risk exposure as of December 31, 2020:
  ASSET DERIVATIVE VALUE   LIABILITY DERIVATIVE VALUE
  Equity
Contracts
  Foreign Currency
Contracts
  Interest Rate
Contracts
  Equity
Contracts
  Foreign Currency
Contracts
  Interest Rate
Contracts
Limited Maturity Bond Fund $   $   $ 96,946   $   $   $ (29,876)
Quality Bond Fund     299,623       (220,350)
High Yield Bond Fund     31,835       (45,081)
Flexibly Managed Fund       (57,303,523)    
Index 500 Fund 165,487          
Mid Cap Growth Fund 345,492       (31,903)    
Mid Core Value Fund   9,241       (57,919)  
Small Cap Index Fund 44,217          
Developed International Index Fund 47,990          
In order to better define their contractual rights and to secure rights that will help the Funds mitigate their counterparty risk, the Funds may participate in International Swaps and Derivatives Association, Inc. Master Agreements (“ISDA Master Agreement” or “ISDA”) with derivative contract counterparties or enter into similar agreements covering foreign exchange contracts (“Fx Letters”). An ISDA Master Agreement is a bilateral agreement between a Fund and a counterparty that governs over-the-counter (“OTC”) traded derivatives and foreign exchange contracts and typically contains, among other things, collateral posting terms and netting provisions in the event of a default and/or termination event. Under an ISDA Master Agreement, a Fund may, under certain circumstances, offset with the counterparty certain derivative financial instrument’s payables and/or receivables with collateral held and/or posted and create one single net payment. The provisions of the ISDA Master Agreement typically permit a single net payment in the event of default (closeout netting) including the bankruptcy or insolvency of the counterparty. Also, bankruptcy or insolvency laws of a particular jurisdiction may impose restrictions on or prohibitions against the right of offset in bankruptcy, insolvency or other events. An Fx Letter is also a bilateral agreement between a Fund and a counterparty and is limited to cover only foreign exchange contracts. Fx Letters typically contain netting provisions covering events of default and do not require collateral to be posted. ISDAs and Fx Letters containing netting provisions may be referred to as Master Netting Agreements (“MNA”).
Collateral and margin requirements differ by type of derivative. Margin requirements are established by the broker for OTC traded derivatives or by the clearing house for exchange traded derivatives. Brokers can ask for margining in excess of the minimum in certain circumstances. Collateral terms are contract specific for OTC derivatives (foreign currency exchange contracts and options). For derivatives traded under an ISDA Master Agreement, the collateral requirements are typically calculated by netting the mark to market amount for each transaction under such agreement and comparing that amount to the value of any collateral currently pledged by a Fund and the counterparty. Generally, the amount of collateral due from or to a party has to exceed a minimum transfer amount threshold before a transfer has to be made. To the extent amounts due to a Fund from its counterparties are not fully collateralized, contractually or otherwise, the Fund bears the risk of loss from counterparty non-performance. The Fund attempts to mitigate counterparty risk by only entering into agreements with counterparties that it believes have the financial resources to honor their obligations and by monitoring the financial stability of those counterparties.
230



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

The following table presents derivative assets and liabilities net of amounts available for offset under a MNA and, as applicable, the related collateral and potential loss exposure to each Fund as of December 31, 2020:
        Gross Amounts Presented
on Statements of Assets
and Liabilities
 
Fund and Counterparty   Form of
Master
Netting
Agreement
  Value of
Assets
  Value of
Liabilities
  Net Amount
Due (to)/from
Counterparty
  Collateral Pledged
(Received by
Fund)
  Loss Exposure,
After Collateral
Flexibly Managed Fund                        
Bank of America   ISDA   $   $ (816,586)   $ (816,586)   $—   $ (816,586)
Citigroup   ISDA     (14,538,034)   (14,538,034)     (14,538,034)
Credit Suisse   ISDA     (4,969,449)   (4,969,449)     (4,969,449)
Goldman Sachs   ISDA     (8,328,892)   (8,328,892)     (8,328,892)
JP Morgan   ISDA     (24,691,953)   (24,691,953)     (24,691,953)
RBC Capital   ISDA     (1,127,644)   (1,127,644)     (1,127,644)
Susquehanna Financial Group, Lllp   ISDA     (2,830,965)   (2,830,965)     (2,830,965)
Total       $   $ (57,303,523)   $ (57,303,523)   $—   $ (57,303,523)
Mid Cap Growth Fund                        
Citigroup   ISDA   163,963   (18,192)   145,771     145,771
JP Morgan   ISDA   181,529   (13,711)   167,818     167,818
Total       $345,492   $ (31,903)   $ 313,589   $—   $ 313,589
Mid Core Value Fund                        
Bank of America   Fx Letter   73   (3,272)   (3,199)     (3,199)
Credit Suisse   Fx Letter   7,409     7,409     7,409
Goldman Sachs   Fx Letter     (8,828)   (8,828)     (8,828)
JP Morgan   Fx Letter   1,759   (45,034)   (43,275)     (43,275)
Morgan Stanley   Fx Letter     (785)   (785)     (785)
Total       $ 9,241   $ (57,919)   $ (48,678)   $—   $ (48,678)
The following is a summary of the location of derivatives on the Funds’ Statements of Operations as of December 31, 2020:
Derivative Type   Location of Gain (Loss) on Derivatives Recognized in Income
Equity contracts   Net realized gain (loss) on futures contracts
Net realized gain (loss) on purchased options
Net realized gain (loss) on written options
Net change in unrealized appreciation (depreciation) of futures contracts
Net change in unrealized appreciation (depreciation) of purchased options
Net change in unrealized appreciation (depreciation) of written options
Interest rate contracts   Net realized gain (loss) on futures contracts
Net change in unrealized appreciation (depreciation) of futures contracts
Foreign currency contracts   Net realized gain (loss) on forward foreign currency contracts
Net change in unrealized appreciation (depreciation) of forward foreign
currency contracts
    Realized Gain (Loss) on Derivatives Recognized in Income
Fund   Equity Contracts   Foreign Currency
Contracts
  Interest Rate
Contracts
Limited Maturity Bond Fund   $   $   $ 3,047,932
Quality Bond Fund       8,082,117
231



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

    Realized Gain (Loss) on Derivatives Recognized in Income
Fund   Equity Contracts   Foreign Currency
Contracts
  Interest Rate
Contracts
Flexibly Managed Fund   $(1,515,684)   $ (1,142)   $
Large Growth Stock Fund     9  
Index 500 Fund   1,474,099    
Mid Cap Growth Fund   (281,857)    
Mid Core Value Fund     (314,752)  
Small Cap Index Fund   217,384    
Developed International Index Fund   1,179,996    
Emerging Markets Equity Fund     (232,394)  
    Change in Unrealized Appreciation (Depreciation) on Derivatives
Recognized in Income
Fund   Equity Contracts   Foreign Currency
Contracts
  Interest Rate
Contracts
Limited Maturity Bond Fund   $   $   $ 394,622
Quality Bond Fund       1,495,166
High Yield Bond Fund       (13,246)
Flexibly Managed Fund   (3,498,148)    
Index 500 Fund   18,434    
Mid Cap Growth Fund   (222,141)    
Mid Core Value Fund     23,910  
Small Cap Index Fund   25,269    
Developed International Index Fund   27,248    
Emerging Markets Equity Fund     94,768  
The table below summarizes the average balance of derivative holdings by Fund during the year ended December 31, 2020. The average balance of derivatives held is indicative of the trading volume of each Fund.
    Average Derivative Volume
Fund   Forward foreign
currency
contracts
(average cost)
  Futures
contracts
(average
notional
value)
long
  Futures
contracts
(average
notional
value)
short
  Purchased
options
(average
notional
cost)
  Written
options
(premiums
received)
Limited Maturity Bond Fund   $   $ 89,016,600   $ 5,064,363   $   $
Quality Bond Fund     146,219,397   8,905,494    
Flexibly Managed Fund           21,815,348
Index 500 Fund     7,917,803      
Mid Cap Growth Fund         139,837   110,525
Mid Core Value Fund   (6,489,326)        
Small Cap Index Fund     1,128,032      
Developed International Index Fund     3,322,295      
Emerging Markets Equity Fund   (8,728,572)        
8 — Credit and Market Risk
During the current fiscal period, the COVID-19 outbreak was declared a pandemic by the World Health Organization. The COVID-19 coronavirus pandemic was first detected in China in December 2019 and subsequently spread globally. Containment efforts around the world have halted business and manufacturing operations and restricted people’s movement and travel. The virus and those containment efforts have caused disruptions to global supply chains, consumer demand, business investment and the global financial system, and considerable uncertainty for the global economy and financial markets. The effects of COVID-19 pandemic may persist for an extended period of time
232



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

and have resulted in substantial market volatility and a significant economic downturn. The ultimate economic fallout from the pandemic, and the long-term impact on economies, markets, industries and individual issuers, are not known. The COVID-19 pandemic could adversely affect the value and liquidity of the Fund’s investments and negatively impact the Fund’s performance. In addition, measures taken to mitigate the effects of the COVID-19 pandemic, could result in disruptions to the services provided to the Fund by its service providers. The potential impact to the Funds is uncertain at this time and management continues to monitor and evaluate the situation.
The Funds may invest a portion of their assets in illiquid securities, which may include securities with contractual restrictions on resale, securities exempt from registration under Rule 144A of the Securities Act of 1933, as amended, and other securities which may not be readily marketable. The relative illiquidity of these securities may impair the Funds’ ability to dispose of them in a timely manner and at a fair price when it is necessary or preferable to do so.
The high yield securities in which the High Yield Bond Fund may invest are predominantly speculative as to the issuer’s continuing ability to meet principal and interest payments. The value of the lower quality securities in which the High Yield Bond Fund may invest will be affected by the credit worthiness of individual issuers, general economic and specific industry conditions, and will fluctuate inversely with changes in interest rates. In addition, the secondary trading market for lower quality bonds may be less active and less liquid than the trading market for higher quality bonds.
The Flexibly Managed, Large Growth Stock, Large Cap Growth, Mid Cap Growth, Mid Core Value, Small Cap Growth, Developed International Index, International Equity and the Emerging Markets Equity Funds invest in securities of foreign issuers in various countries. These investments may involve certain considerations and risks not typically associated with investments in the United States, as a result of, among other factors, the possibility of future political and economic developments and the level of governmental supervision and regulation of securities markets in the respective countries.
9 —  Contractual Obligations
In the general course of business, the Funds enter into contracts that contain a variety of representations and warranties and which provide general indemnification. The Funds’ maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Funds and/or its affiliates that have not yet occurred. However, based on experience, management of the Funds expects the risk of loss to be remote.
10 — Recent Accounting Pronoucements and Reporting Updates
In March 2017, the FASB issued an Accounting Standards Update ("ASU"), ASU 2017-08, which provides guidance related to the amortization period for certain purchased callable debt securities held at a premium. The ASU was effective for annual periods beginning after December 15, 2018.
In August 2018, the FASB issued ASU 2018-13, which changes certain fair value measurement disclosure requirements. The ASU 2018-13, in addition to other modifications and additions, removes the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for the timing of transfers between levels and the valuation process for Level 3 fair value measurements. The ASU 2018-13 is effective for fiscal years, and interim periods within those fiscal years, beginning after Dec. 15, 2019. Management has implemented the ASU 2018-13 on these financial statements.
In March 2020, the FASB issued ASU No. 2020-04 (“ASU 2020-04”), Reference Rate Reform (Topic 848)—Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The amendments in ASU 2020-04 provides optional temporary financial reporting relief from the effect of certain types of contract modifications due to the planned discontinuation of the London Interbank Offered Rate (LIBOR) and other interbank-offered based reference rates as of the end of 2021. ASU 2020-04 is effective for certain reference rate-related contract modifications that occur during the period March 12, 2020 through December 31, 2022. Management is currently evaluating the impact, if any, of applying ASU 2020-04.
Management is also actively working with other financial institutions and counterparties to modify contracts as required by applicable regulation and within the regulatory deadlines.
233



Penn Series Funds, Inc.
Notes to Financial Statements — December 31, 2020

11 —  Subsequent Events
Management has evaluated the impact of all subsequent events on the Funds through the date the financial statements were issued and has determined that no additional subsequent events require recognition or disclosure in the financial statements.
234


Report of Independent Registered Public Accounting Firm
To the Shareholders of the Funds and Board of Directors
Penn Series Funds, Inc.:
Opinion on the Financial Statements
We have audited the accompanying statements of assets and liabilities of Penn Series Funds, Inc., comprised of the Money Market Fund, Limited Maturity Bond Fund, Quality Bond Fund, High Yield Bond Fund, Flexibly Managed Fund, Balanced Fund, Large Growth Stock Fund, Large Cap Growth Fund, Large Core Growth Fund, Large Cap Value Fund, Large Core Value Fund, Index 500 Fund, Mid Cap Growth Fund, Mid Cap Value Fund, Mid Core Value Fund, SMID Cap Growth Fund, SMID Cap Value Fund, Small Cap Growth Fund, Small Cap Value Fund, Small Cap Index Fund, Developed International Index Fund, International Equity Fund, Emerging Markets Equity Fund, Real Estate Securities Fund, Aggressive Allocation Fund, Moderately Aggressive Allocation Fund, Moderate Allocation Fund, Moderately Conservative Allocation Fund, and Conservative Allocation Fund (collectively, the Funds), including the schedules of investments, as of December 31, 2020, the related statements of operations for the year then ended, the statements of changes in net assets for each of the years in the two-year period then ended, and the related notes (collectively, the financial statements) and the financial highlights for each of the years in the five-year period then ended. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of each of the Funds as of December 31, 2020, the results of their operations for the year then ended, the changes in their net assets for each of the years in the two-year period then ended, and the financial highlights for each of the years in the five-year period then ended, in conformity with U.S. generally accepted accounting principles.
Basis for Opinion
These financial statements and financial highlights are the responsibility of the Funds’ management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Funds in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Such procedures also included confirmation of securities owned as of December 31, 2020, by correspondence with the custodian, transfer agent, underlying companies, agent banks and brokers, or by other appropriate auditing procedures when replies were not received. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. We believe that our audits provide a reasonable basis for our opinion.
We have served as the auditor of one or more Penn Series Funds, Inc. investment companies since 2004.
Philadelphia, Pennsylvania
February 24, 2021
235



Penn Series Funds, Inc.
December 31, 2020

Tax Information (unaudited)
Each Fund reports the following amounts distributed during the year ended December 31, 2020 as capital gain dividends:
Fund   Long-Term
Capital Gains
Limited Maturity Bond Fund   $ 1,567,406
Quality Bond Fund   6,844,266
Flexibly Managed Fund   441,249,176
Balanced Fund   17,384,260
Large Growth Stock Fund   28,538,979
Large Cap Growth Fund   8,408,992
Large Core Growth Fund   25,553,387
Large Core Value Fund   1,542,840
Index 500 Fund   66,750,489
Mid Cap Growth Fund   23,161,228
Mid Core Value Fund   562,228
SMID Cap Growth Fund   9,833,197
Small Cap Growth Fund   7,325,859
Small Cap Index Fund   7,302,631
Developed International Index Fund   1,907,408
International Equity Fund   23,387,435
Aggressive Allocation Fund   7,600,653
Moderately Aggressive Allocation Fund   25,962,614
Moderate Allocation Fund   35,292,752
Moderately Conservative Allocation Fund   8,796,197
Conservative Allocation Fund   4,372,679
Each Fund reports the following percentages of ordinary income dividend paid during the year ended December 31, 2020 as being eligible for the dividends received deduction available to corporate shareholders:
Fund  
High Yield Bond Fund 1.57%
Flexibly Managed Fund 22.13%
Balanced Fund 37.90%
Large Growth Stock Fund 27.77%
Large Cap Growth Fund 100.00%
Large Core Growth Fund 2.03%
Large Cap Value Fund 100.00%
Large Core Value Fund 100.00%
Index 500 Fund 98.10%
Mid Cap Value Fund 100.00%
Mid Core Value Fund 100.00%
SMID Cap Growth Fund 3.25%
SMID Cap Value Fund 100.00%
Small Cap Value Fund 100.00%
Small Cap Index Fund 43.17%
International Equity Fund 10.03%
Emerging Markets Equity Fund 1.24%
Aggressive Allocation Fund 45.68%
Moderately Aggressive Allocation Fund 37.77%
Moderate Allocation Fund 22.35%
Moderately Conservative Allocation Fund 14.45%
Conservative Allocation Fund 7.49%
236



Penn Series Funds, Inc.
December 31, 2020

Tax Information (unaudited) continued
Disclosure of Portfolio Holdings
Pursuant to applicable law, the Funds are required to disclose to the SEC their complete portfolio holdings monthly on Form N-PORT, within 60 days of the end of each month and within 5 days after the end of each month for the Money Market Fund on Form N-MFP. Portfolio holdings reported for the last month of each fiscal quarter are made publicly available by the SEC 60 days after the end of the fiscal quarter. Holdings reports filed with the SEC on Forms N-PORT and N-MFP are not distributed to Fund shareholders, but are available, free of charge, on the EDGAR database on the SEC’s website at http://www.sec.gov.
Voting Proxies on Fund Portfolio Securities
A description of the policies and procedures that the Fund uses to determine how to vote proxies relating to securities held in the Fund’s portfolios is available, without charge and upon request, on the Fund’s website at http://www.pennmutual.com or on the SEC’s website at http://www.sec.gov. Information regarding how the Fund voted proxies for the most recent twelve-month period ended December 31, 2020 is available on the Fund’s website at http://www.pennmutual.com and on the SEC’s website at http://www.sec.gov.
237


Penn Series Funds Management (Unaudited)
Name and Year of Birth   Position with
the Company;
Term of Office
and Length of
Time Served
  Principal Occupation
During Past 5 Years
  Number of
Funds
Overseen by
the Director
  Other Directorships
Held by Director
During Past 5 Years
INDEPENDENT DIRECTORS
Marie K. Karpinski (1949)*   Director;
No set term;
served since
2015.
  Retired (2010 – Present).   29   None.
Joanne B. Mack (1946)*   Director;
No set term;
served since
2013.
  Vice President – Financial Services Consulting, Trianz (2012 – 2013); Management Consultant, self-employed (2009 – 2012; 2013 – Present).   29   None.
Archie C. MacKinlay (1955)*   Director;
No set term;
served since
2010.
  Professor of Finance, Wharton School, University of Pennsylvania (1984 – Present).   29   None.
Rebecca C. Matthias (1953)*   Director;
No set term;
served since
2010.
  Retired (2010 – Present); President, Destination Maternity Corporation (clothing) (1982 – 2010).   29   Director, CSS Industries
(2005-2020).
David B. Pudlin (1949)*   Director;
No set term;
served since
2009.
  Chief Executive Officer, President and Attorney, Hangley Aronchick Segal Pudlin & Schiller (law firm) (1994 – Present).   29   None.
INTERESTED DIRECTORS
Eileen C. McDonnell (1962)*   Director and
Chairperson of
the Board;
No set term;
served since
2010.
  Chief Executive Officer (2011 – Present), President (2010 – 2015), Chairperson of the Board (2013 –Present), Executive Vice President and Chief Marketing Officer (2008 – 2010), Penn Mutual; Director, PMAM (2010 – Present); President and Director (2010 – Present), Chairperson of the Board (2011 – Present), PIA.   29   Director, UHS of
Delaware, Inc.
* The address of each Director is: Penn Series Funds, Inc. 600 Dresher Road, Horsham, Pennsylvania 19044.
Name and Year of Birth   Position with
the Company;
Term of Office
and Length of
Time Served
  Principal Occupation
During Past 5 Years
    OFFICERS
David M. O’Malley (1974)*   President;
One year;
served since
2014.
  Chairperson and Chief Executive Officer, PMAM (2014 – Present); President and Chief Operating Officer (2016 – Present), Chief Operating Officer (2013 – 2015), Chief Financial Officer (2010 – 2013), Executive Vice President (2009 – 2013), Penn Mutual.
Steven Viola (1975)*   Treasurer
One year;
served
since 2015.
  Assistant Treasurer (2016 – Present), Senior Fund Accounting Analyst (2016 – 2017), PMAM; Senior Accountant, Penn Mutual (2005 – 2015).
238


Penn Series Funds Management (Unaudited)
Name and Year of Birth   Position with
the Company;
Term of Office
and Length of
Time Served
  Principal Occupation
During Past 5 Years
Tyler J. Thur (1984)*   Assistant
Treasurer
One year;
served since
Feb. 2017.
  Controller and Treasurer, PMAM (2015 – Present); Senior Financial Analyst, Penn Mutual (2011 – 2014).
Victoria Robinson (1965)*   Secretary
One year;
served
since 2019. AML Officer One year; served since 2019.
  Chief Ethics & Compliance Officer, Penn Mutual & Hornor, Townsend & Kent, LLC (“HTK”). Anti Money Laundering Officer. Penn Mutual & HTK (2019 – present). Chief Operating Officer PMAM (2017 – 2019); Chief Compliance & Risk Officer, Managing Director, PMAM (2008 – 2019) Assistant Vice President, Penn Mutual (2010 – 2015).
Wei Zhao (1974)*   Chief
Compliance
Officer
One year;
served since
2020.
  Senior Compliance Manager and Internal Audit Manager, Aberdeen Standard Investment (2013 – 2018); Compliance Manager and Associate Compliance Officer, PMAM (2018 – 2019); Chief Compliance Officer, PMAM (2019 – Present).
* The address of each Officer is: Penn Series Funds, Inc. 600 Dresher Road, Horsham, Pennsylvania 19044.
Additional information about the Fund’s Directors is available in the Fund’s Statement of Additional Information, which is available upon request, without charge, by calling 1-800-523-0650.
239


© 2020 The Penn Mutual Life Insurance Company and The Penn Insurance & Annuity Company, Philadelphia, PA 19172 www.pennmutual.com
PM8644 12/20


  (b)

Not applicable

 

Item 2.

Code of Ethics.

 

  (a)

The registrant, as of the end of the period covered by this report, has adopted a code of ethics that applies to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party.

 

  (c)

There have been no amendments, during the period covered by this report, to a provision of the code of ethics that applies to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, and that relates to any element of the code of ethics description.

 

  (d)

The registrant has not granted any waivers, including an implicit waiver, from a provision of the code of ethics that applies to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, that relates to one or more of the items set forth in paragraph (b) of this item’s instructions.

 

Item 3.

Audit Committee Financial Expert.

The Registrant’s Board of Directors has determined that Ms. Rebecca C. Matthias qualifies as an audit committee financial expert, as defined in Item 3 of Form N-CSR. Ms. Matthias is considered independent for purposes of Item 3 of Form N-CSR.

 

Item 4.

Principal Accountant Fees and Services.

Audit Fees

 

  (a)

The aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant’s annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years are $550,000 for 2020 and $514,500 for 2019.


Audit-Related Fees

 

  (b)

The aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant’s financial statements and are not reported under paragraph (a) of this Item are $0 for 2020 and $0 for 2019.

Tax Fees

 

  (c)

The aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning are $0 for 2020 and $0 for 2019.

All Other Fees

 

  (d)

The aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item are $0 for 2020 and $0 for 2019.

 

  (e)

Audit Committee’s pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X.

 

  (e)(1)

Pre-Approval of Audit and Non-Audit Services Provided to the Funds of the Penn Series Funds, Inc. To the extent required by applicable law, pre-approval by the Audit Committee of the Penn Series Funds, Inc. (the “Company”) Board of Directors is required for all audit and permissible non-audit services rendered to the Company and all permissible non-audit services rendered to the investment adviser to the Company, Penn Mutual Asset Management, Inc. (“PMAM”), or any other service providers controlling, controlled by or under common control with PMAM that provide ongoing services to the Company (“Related Entities”) that relate directly to the operations and financial reporting of the Company’s Funds. The Audit and Non-Audit Services Pre-Approval Policy (the “Policy”) adopted by the Audit Committee sets forth the procedures and the conditions pursuant to which services performed by an independent auditor for the Company may be pre-approved. Services may be pre-approved specifically by the Audit Committee as a whole or by the Audit Committee Chairman or other member of the Audit Committee as designated by the Audit Committee. The Policy sets forth the audit, audit-related, tax and all other services that are subject to general or specific pre-approval by the Audit Committee subject to specified expense limitations. The Policy provides that the Audit Committee will annually review and pre-approve the services that may be provided by the independent auditor pursuant to the pre-approval provision of the Policy. Pursuant to the Policy, the Audit Committee will consider whether the services provided by an independent auditor are consistent with the Securities and Exchange Commission’s rules and related guidance concerning auditor independence.

 

  (e)(2)

No services included in (b)-(d) above were approved pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

 

  (f)

Not Applicable.

 

  (g)

The aggregate non-audit fees billed by the registrant’s accountant for services rendered to the registrant, and rendered to the registrant’s investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant was $0 for 2020 and $0 for 2019.


  (h)

Not applicable.

 

Item 5.

Audit Committee of Listed Registrants.

Not applicable.

 

Item 6.

Investments.

 

(a)

Schedule of Investments in securities of unaffiliated issuers as of the close of the reporting period is included as part of the report to shareholders filed under Item 1(a) of this form.

 

(b)

Not applicable.

 

Item 7.

Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.

Not applicable.

 

Item 8.

Portfolio Managers of Closed-End Management Investment Companies.

Not applicable.

 

Item 9.

Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.

Not applicable.

 

Item 10.

Submission of Matters to a Vote of Security Holders.

The shareholder meeting voting results is included as part of the report to shareholders filed under Item 1 of this form.

 

Item 11.

Controls and Procedures.

 

  (a)

The registrant’s principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”) (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph, based on their evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rules 13a- 15(b) or 15d-15(b) under the Securities Exchange Act of 1934, as amended (17 CFR 240.13a-15(b) or 240.15d-15(b)).


  (b)

There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

 

Item 12.

Disclosure of Securities Lending Activities for Closed-End Management Investment Companies.

Not applicable.

 

Item 13.

Exhibits.

 

(a)(1)   Code of ethics, or any amendment thereto, that is the subject of disclosure required by Item 2 is attached hereto.
(a)(2)   Certifications pursuant to Rule 30a-2(a) under the 1940 Act and Section 302 of the Sarbanes-Oxley Act of 2002 are attached hereto.
(a)(3)   Not applicable.
(a)(4)   Not applicable.
(b)   Certifications pursuant to Rule 30a-2(b) under the 1940 Act and Section 906 of the Sarbanes- Oxley Act of 2002 are attached hereto.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

(Registrant)                              Penn Series Funds, Inc.                                                     
By (Signature and Title)*         /s/ David M. O’Malley                                                       

                                                   David M. O’Malley, President

                                                   (principal executive officer)

Date     March 8, 2021    

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

 

By (Signature and Title)*        /s/ David M. O’Malley                                                       

                                                   David M. O’Malley, President

                                                   (principal executive officer)

Date     March 8, 2021    

By (Signature and Title)*        /s/ Steven Viola                                                                   

                                                   Steven Viola, Treasurer

                                                   (principal financial officer)

Date     March 8, 2021    

 

* 

Print the name and title of each signing officer under his or her signature.