NW NYSE Arca Tech 100 (SP-ATX)

Nationwide NYSE Arca Tech 100 Index Fund(formerly, Nationwide Ziegler NYSE Arca Tech 100 Index Fund)

Summary Prospectus March 1, 2021

Class/Ticker A NWJCX C NWJDX R6 NWJEX Institutional Service Class NWJFX

Before you invest, you may want to review the Fund’s Prospectus, which contains information about the Fund and its risks. The Fund’s Prospectus and Statement of Additional Information, each dated March 1, 2021 (as may be supplemented or revised), are incorporated by reference into this Summary Prospectus. For free paper or electronic copies of the Fund’s Prospectus and other information about the Fund, go to nationwide.com/mutualfundprospectuses, email a request to web_help@nationwide.com or call 800-848-0920, or ask any financial advisor, bank, or broker-dealer who offers shares of the Fund.

Objective

The Nationwide NYSE Arca Tech 100 Index Fund seeks to track the total return of the NYSE Arca Tech 100SM Index before deducting for Fund expenses.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts is available from your financial professional and in “Investing with Nationwide Funds” commencing on page 41 of the Prospectus and in “Additional Information on Purchases and Sales” commencing on page 96 of the Statement of Additional Information. In addition, if you purchase shares through a specific intermediary, you may be subject to different sales charges including reductions in or waivers of such charges. More information about these intermediary-specific sales charge variations is available in Appendix A to the Fund’s Prospectus.

Shareholder Fees (fees paid directly from your investment)

	Class A Shares	Class C Shares	Class R6 Shares	Institutional Service Class Shares
Maximum Sales Charge (Load) imposed on purchases (as a percentage of offering price)	5.75%	None	None	None
Maximum Deferred Sales Charge (Load) (as a percentage of offering or sale price, whichever is less)	None	1.00%	None	None

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

	Class A Shares	Class C Shares	Class R6 Shares	Institutional Service Class Shares
Management Fees(1)	0.22%	0.22%	0.22%	0.22%
Distribution and/or Service (12b-1) Fee	0.25%	1.00%	None	None
Other Expenses	0.20%	0.17%	0.10%	0.23%
Total Annual Fund Operating Expenses	0.67%	1.39%	0.32%	0.45%

(1) “Management Fees” has been restated to reflect the reduction of contractual investment advisory fees as of May 21, 2020.

Example

This Example is intended to help you to compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those time periods. It assumes a 5% return each year and no change in expenses, and any expense limitation or fee waivers that

SP-ATX (3/21)

Summary Prospectus March 1, 2021

Nationwide NYSE Arca Tech 100 Index Fund

may apply for the periods indicated above under “Fees and Expenses.” Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	1 Year	3 Years	5 Years	10 Years
Class A Shares	$640	$777	$927	$1,362
Class C Shares	242	440	761	1,669
Class R6 Shares	33	103	180	406
Institutional Service Class Shares	46	144	252	567

You would pay the following expenses on the same investment if you did not sell your shares:

	1 Year	3 Years	5 Years	10 Years
Class C Shares	$142	$440	$761	$1,669

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 4.82% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to track the total return of the NYSE Arca Tech 100 Index, before deducting for Fund expenses. The NYSE Arca Tech 100 Index, which consists of at least 100 individual technology-related securities, is a price-weighted index of stocks of companies from different industries that produce or deploy innovative technologies to conduct their business. The market capitalizations of the companies in the NYSE Arca Tech 100 Index range from small- to large-capitalization companies.

To pursue its principal investment strategy, the Fund, under normal market conditions, invests substantially all (at least 90%) of its net assets in nearly all of the component equity securities included in the NYSE Arca Tech 100 Index in approximately the same proportions as they are represented in the NYSE Arca Tech 100 Index. The largest component of the NYSE Arca Tech 100 Index consists of companies in the technology sector, such as companies in the software, hardware and semiconductor industries. However, the NYSE Arca Tech 100 Index also includes companies in numerous other industries, such as aerospace and defense, health care equipment, biotechnology and others. Because the NYSE Arca Tech 100 Index includes securities from several technology industries, the Fund is permitted to invest more than 25% of its net assets in securities of companies in the technology sector.

Principal Risks

The Fund cannot guarantee that it will achieve its investment objective.

As with any fund, the value of the Fund’s investments—and therefore, the value of Fund shares—may fluctuate. These changes may occur because of:

Equity securities risk– stock markets are volatile. The price of an equity security fluctuates based on changes in a company’s financial condition and overall market and economic conditions.

Market risk – market risk is the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. This may be due to numerous factors, including interest rates, the outlook for corporate profits, the health of the national and world economies, national and world social and political events, and the fluctuation of other stock markets around the world. The global pandemic outbreak of an infectious respiratory illness caused by a novel coronavirus known as COVID-19 has resulted in substantial market volatility and global business disruption, affecting the global economy and the financial health of individual companies in significant and unforeseen ways. The duration and future impact of COVID-19 are currently unknown, which may exacerbate the other risks that apply to the Fund and could negatively affect Fund performance and the value of your investment in the Fund.

Index fund risk – the Fund does not use defensive strategies or attempt to reduce its exposure to poor performing securities. Further, correlation between the Fund’s performance and that of the index may be negatively affected by the Fund’s expenses, changes in the composition of the index, and the timing of purchase and redemption of Fund shares.

Summary Prospectus March 1, 2021

Nationwide NYSE Arca Tech 100 Index Fund

Concentration risk – the risk associated with exposure to any one industry or sector. Because the technology sector constitutes a large percentage of the NYSE Arca Tech 100 Index, the Fund focuses its investments (i.e., invests more than 25% of its total assets) in the technology sector. This sector concentration exposes the Fund to risks associated with economic conditions in the technology sector. Due to intense global competition, a less diversified product line and other factors, companies that develop and/or rely on technology are often highly sensitive to downswings in the economy. Such companies may also experience volatile swings in demand for their products and services due to changing economic conditions, rapid technological advances and shorter product lifespans.

Smaller companies risk – smaller companies are usually less stable in price and less liquid than larger, more established companies. Smaller companies are more vulnerable than larger companies to adverse business and economic developments and may have more limited resources. Therefore, they generally involve greater risk.

Selection risk – selection risk is the risk that the securities selected by the Fund’s subadviser will underperform the markets, the relevant indexes or the securities selected by other funds with similar investment objectives and investment strategies.

Loss of money is a risk of investing in the Fund. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Performance

The Fund has adopted the historical performance of the HighMark NYSE Arca Tech 100 Index Fund, a former series of HighMark Funds (the “Predecessor Fund”) as the result of a reorganization in which the Fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund on September 16, 2013. The returns presented for periods prior to September 16, 2013 reflect the performance of the Predecessor Fund. At the time of the reorganization, the Fund and the Predecessor Fund had substantially similar investment goals and strategies.

The following bar chart and table can help you evaluate the Fund’s potential risks. The bar chart shows how the Fund’s annual total returns have varied from year to year. The table compares the Fund’s average annual total returns to the returns of a broad-based securities index. Remember, however, that past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future. Updated performance information is available at no cost by visiting nationwide.com/mutualfunds or by calling 800-848-0920.

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Annual Total Returns– Class A Shares
(Years Ended December 31,)

Highest Quarter:	23.42%	–	2Q 2020
Lowest Quarter:	-17.02%	–	1Q 2020

After-tax returns are shown for Class A shares only and will vary for other classes. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Your actual after-tax return depends on your personal tax situation and may differ from what is shown here. After-tax returns are not relevant to investors in tax-advantaged arrangements, such as individual retirement accounts, 401(k) plans or certain other employer-sponsored retirement plans.

Historical performance for Class A, Class C and Institutional Service Class shares is based on the previous performance of Class A, Class C and Fiduciary Class Shares, respectively, of the Predecessor Fund.

The inception date for Class R6 shares is September 18, 2013. Therefore, pre-inception historical performance of Class R6 shares is based on the previous performance of the Predecessor Fund’s Fiduciary Class Shares. Performance for Class R6 shares has not been adjusted to reflect that share class’s lower expenses than those of the Predecessor Fund’s Fiduciary Class Shares.

Summary Prospectus March 1, 2021

Nationwide NYSE Arca Tech 100 Index Fund

Average Annual Total Returns
(For the Periods Ended December 31, 2020)

	1 Year	5 Years	10 Years
Class A Shares– Before Taxes	17.14%	18.18%	15.38%
Class A Shares– After Taxes on Distributions	15.77%	17.36%	14.94%
Class A Shares– After Taxes on Distributions and Sales of Shares	11.09%	14.61%	12.97%
Class C Shares– Before Taxes	22.42%	18.72%	15.24%
Class R6 Shares– Before Taxes	24.72%	20.01%	16.43%
Institutional Service Class Shares– Before Taxes	24.56%	19.86%	16.32%
NYSE Arca Tech 100SM Index (The Index does not pay sales charges, fees, expenses or taxes.)	24.82%	20.54%	17.11%

Portfolio Management

Investment Adviser

Nationwide Fund Advisors

Subadviser

Mellon Investments Corporation

Portfolio Managers

Portfolio Manager	Title	Length of Service with Fund (and Predecessor Fund)
Tom Durante, CFA	Managing Director, Co-Head of Equity Index Portfolio Management	Since 2020
Marlene Walker Smith	Director, Co-Head of Equity Index Portfolio Management	Since 2020
David France, CFA	Director, Co-Head of Equity Index Portfolio Management	Since 2020
Todd Frysinger, CFA	Vice President, Senior Portfolio Manager of Equity Index Portfolio Management	Since 2020
Vlasta Sheremeta, CFA	Vice President, Senior Portfolio Manager of Equity Index Portfolio Management	Since 2020
Michael Stoll	Vice President, Senior Portfolio Manager of Equity Index Portfolio Management	Since 2020

Purchase and Sale of Fund Shares

Minimum Initial Investment

Class A, Class C: $2,000

Class R6: $1,000,000

Institutional Service Class: $50,000

Automatic Asset Accumulation Plan (Class A, Class C): $0*

* Provided each monthly purchase is at least $50

Minimum Additional Investment

Class A, Class C: $100

Class R6, Institutional Service Class: no minimum

Automatic Asset Accumulation Plan (Class A, Class C): $50

In general, you can buy or sell (redeem) shares of the Fund through your broker-dealer or financial intermediary, or by mail or phone on any business day. You can generally pay for shares by check or wire.

To Purchase and Sell (Redeem) Fund Shares
Mail: Nationwide Funds P.O. Box 701 Milwaukee, WI 53201- 0701	Overnight: Nationwide Funds 615 East Michigan Street Third Floor Milwaukee, WI 53202	Website: nationwide.com/ mutualfunds
Phone: 800-848-0920 (toll free). Representatives are available 9 a.m. – 8 p.m. Eastern time, Monday through Friday.

Tax Information

The Fund’s distributions are taxable, and generally will be taxed as ordinary income, capital gains, or some combination of both, unless you are investing through a tax-advantaged arrangement, such as a 401(k) plan or an individual retirement account, in which case your distributions may be taxed as ordinary income when withdrawn from the tax-advantaged account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

Summary Prospectus March 1, 2021

Nationwide NYSE Arca Tech 100 Index Fund