# EDGAR Filing Document

**Accession Number:** 0001048702
**File Stem:** 0001193125-25-268530
**Filing Date:** 2025-11
**Character Count:** 4962
**Document Hash:** ecef4a6479946db16264cd5145de8635
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-268530.hdr.sgml**: 20251106

**ACCESSION NUMBER**: 0001193125-25-268530

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20251106

**DATE AS OF CHANGE**: 20251106

**EFFECTIVENESS DATE**: 20251106

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NATIONWIDE MUTUAL FUNDS
- **CENTRAL INDEX KEY:** 0001048702

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-40455
- **FILM NUMBER:** 251456942

**BUSINESS ADDRESS:**
- **STREET 1:** ONE NATIONWIDE PLAZA
- **STREET 2:** MAIL CODE 05-02-210
- **CITY:** COLUMBUS
- **STATE:** OH
- **ZIP:** 43215
- **BUSINESS PHONE:** 614-435-5749

**MAIL ADDRESS:**
- **STREET 1:** ONE NATIONWIDE PLAZA
- **STREET 2:** MAIL CODE 05-02-210
- **CITY:** COLUMBUS
- **STATE:** OH
- **ZIP:** 43215

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GARTMORE MUTUAL FUNDS
- **DATE OF NAME CHANGE:** 20020125

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONWIDE MUTUAL FUNDS
- **DATE OF NAME CHANGE:** 19991015

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONWIDE INVESTING FOUNDATION III
- **DATE OF NAME CHANGE:** 19971029

## Series and Classes Contracts Data

### Nationwide S&P 500 Index Fund (Series ID: S000004999)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000013565 | Class A                     | GRMAX           |
| C000013568 | Class R6                    | GRMIX           |
| C000013569 | Service Class               | GRMSX           |
| C000013570 | Institutional Service Class | GRISX           |
| C000033118 | Class R                     | GRMRX           |

**NATIONWIDE MUTUAL FUNDS** 

Nationwide S&P 500 Index Fund

**Supplement dated November 6, 2025** 

**to the Summary Prospectus dated February 28, 2025** 

*Capitalized terms and certain other terms used in this supplement, unless otherwise defined in this supplement, have the meanings assigned to them in the Summary Prospectus.* 

The Nationwide S&P 500 Index Fund (the "Fund") is updating its diversification policy under the Investment Company Act of 1940, as amended. Under the revised policy, the Fund will continue to track the S&P 500 Index (the "Index") even if the Fund operates as nondiversified as a result of a change in relative market capitalization or index weighting of one or more constituents of the Index.

**Shareholder approval will not be sought if the Fund crosses from diversified to nondiversified status under such circumstances.** 

Effective immediately, the Summary Prospectus is amended as follows:

1. The information under the heading "Principal Investment Strategies" on page 2 of the Summary
Prospectus is deleted in its entirety and replaced with the following:

The Fund employs a "passive" management, or indexing, approach, which seeks to match approximately the performance of the Standard & Poor's 500<sup>®</sup> Index ("S&P 500<sup>®</sup> Index") before the deduction of Fund expenses. The S&P 500<sup>®</sup> Index includes equity securities of approximately 500 large U.S. companies in a wide range of businesses. Under normal circumstances, the Fund invests at least 80% of its net assets in securities of companies included in the S&P 500<sup>®</sup> Index. The Fund does not necessarily invest in all of the securities included in the S&P 500<sup>®</sup> Index or in the same weightings.

The Fund intends to be diversified in approximately the same proportion as the S&P 500<sup>®</sup> Index is diversified. The Fund may become "nondiversified," as defined in the Investment Company Act of 1940 Act, as amended, solely as a result of a change in relative market capitalization or index weighting of one or more constituents of the S&P 500<sup>®</sup> Index. A "nondiversified" fund generally invests a greater proportion of its assets in the securities of one or more issuers and invests overall in a smaller number of issuers than a diversified fund. Shareholder approval will not be sought if the Fund becomes nondiversified due solely to a change in the relative market capitalization or index weighting of one or more constituents of the S&P 500<sup>®</sup> Index.

2. The information under the heading "Principal Risks" on page 2 of the Summary Prospectus is amended
to include the following:

***Nondiversified fund risk*** – in seeking to track the S&P 500<sup>®</sup> Index, the Fund may become non-diversified as a result of a change in relative market capitalization or index weighting of one or more constituents in the S&P 500<sup>®</sup> Index. Because the Fund may hold larger positions in fewer securities than diversified funds, a single security's increase or decrease in value may have a greater impact on the Fund's value and total return.

**PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE**