# EDGAR Filing Document

**Accession Number:** 0000353905
**File Stem:** 0001193125-26-008775
**Filing Date:** 2026-1
**Character Count:** 5107
**Document Hash:** df2229f097dd72703deb0e6c9dc3d678
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-008775.hdr.sgml**: 20260109

**ACCESSION NUMBER**: 0001193125-26-008775

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260109

**DATE AS OF CHANGE**: 20260109

**EFFECTIVENESS DATE**: 20260109

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NATIONWIDE VARIABLE INSURANCE TRUST
- **CENTRAL INDEX KEY:** 0000353905

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-73024
- **FILM NUMBER:** 26522657

**BUSINESS ADDRESS:**
- **STREET 1:** ONE NATIONWIDE PLAZA
- **STREET 2:** MAIL CODE 5-02-210
- **CITY:** COLUMBUS
- **STATE:** OH
- **ZIP:** 43215
- **BUSINESS PHONE:** 614-435-5749

**MAIL ADDRESS:**
- **STREET 1:** ONE NATIONWIDE PLAZA
- **STREET 2:** MAIL CODE 5-02-210
- **CITY:** COLUMBUS
- **STATE:** OH
- **ZIP:** 43215

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GARTMORE VARIABLE INSURANCE TRUST
- **DATE OF NAME CHANGE:** 20020125

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONWIDE SEPARATE ACCOUNT TRUST
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONWIDE SEPARATE ACCOUNT MONEY MARKET TRUST
- **DATE OF NAME CHANGE:** 19860226

## Series and Classes Contracts Data

### NVIT International Index Fund (Series ID: S000012313)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000033505 | Class Y      |  |
| C000033506 | Class II     |  |
| C000033509 | Class VIII   |  |
| C000139945 | Class I      |  |

**NATIONWIDE VARIABLE INSURANCE TRUST** 

NVIT International Index Fund

**Supplement dated January 9, 2026** 

**to the Summary Prospectus dated April 30, 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 NVIT International 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 MSCI EAFE<sup>®</sup> 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 MSCI EAFE<sup>®</sup> Index before the deduction of Fund expenses. The MSCI EAFE<sup>®</sup> Index includes equity securities of large- and mid-cap companies located in Europe, Australia and Asia (including the Far East). Under normal circumstances, the Fund invests at least 80% of its net assets in a statistically selected sampling of securities of companies included in the MSCI EAFE<sup>®</sup> Index. The Fund will, under normal circumstances, invest in all of the countries represented in the MSCI EAFE<sup>®</sup> Index. The Fund may not, however, invest in all the companies within a country represented in the MSCI EAFE<sup>®</sup> Index, or in the same weightings as in the MSCI EAFE<sup>®</sup> Index. <br>

The Fund intends to be diversified in approximately the same proportion as the MSCI EAFE<sup>®</sup> Index is diversified. The Fund may become "nondiversified," as defined in the Investment Company Act of 1940 Act, as amended (the "1940 Act"), solely as a result of a change in relative market capitalization or index weighting of one or more constituents of the MSCI EAFE<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 MSCI EAFE<sup>®</sup> Index. <br>

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 MSCI EAFE<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 MSCI EAFE<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.  |

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