# EDGAR Filing Document

**Accession Number:** 0000819118
**File Stem:** 0000819118-25-000415
**Filing Date:** 2025-11
**Character Count:** 5912
**Document Hash:** b257265fdf8d1294f6b60c3d4e4f057e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000819118-25-000415.hdr.sgml**: 20251110

**ACCESSION NUMBER**: 0000819118-25-000415

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251110

**DATE AS OF CHANGE**: 20251110

**EFFECTIVENESS DATE**: 20251110

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FIDELITY CONCORD STREET TRUST
- **CENTRAL INDEX KEY:** 0000819118

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0228

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-15983
- **FILM NUMBER:** 251464859

**BUSINESS ADDRESS:**
- **STREET 1:** 245 SUMMER STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02210
- **BUSINESS PHONE:** 617-563-7000

**MAIL ADDRESS:**
- **STREET 1:** 245 SUMMER STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02210

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIDELITY INSTITUTIONAL TRUST
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### Fidelity Extended Market Index Fund (Series ID: S000006021)

---

|  |  |  |
|:---|:---|:---|
| Class Name                          | Ticker Symbol | Class ID   |
| Fidelity Extended Market Index Fund | FSMAX         | C000103355 |

---

### Fidelity International Index Fund (Series ID: S000006023)

---

|  |  |  |
|:---|:---|:---|
| Class Name                        | Ticker Symbol | Class ID   |
| Fidelity International Index Fund | FSPSX         | C000103357 |

---

## Series and Classes Contracts Data

### Fidelity Extended Market Index Fund (Series ID: S000006021)

| Class ID   | Class Name                          | Ticker Symbol   |
|:---|:---|:---|
| C000103355 | Fidelity Extended Market Index Fund | FSMAX           |

### Fidelity International Index Fund (Series ID: S000006023)

| Class ID   | Class Name                        | Ticker Symbol   |
|:---|:---|:---|
| C000103357 | Fidelity International Index Fund | FSPSX           |

**Supplement to the<br>Fidelity® Extended Market Index Fund, Fidelity® International Index Fund, and Fidelity® Total Market Index Fund<br>April 29, 2025<br>Prospectus**

<br> The following information supplements information for Fidelity® Total Market Index Fund found in the "Fund Summary" section under the "Principal Investment Strategies" heading.

The fund may operate as a non-diversified fund, as defined under the Investment Company Act of 1940 (1940 Act), to the approximate extent the index is non-diversified. The fund may therefore operate as non-diversified solely as a result of a change in relative market capitalization or index weighting of one or more constituents of the index.

The following information supplements information for Fidelity® Total Market Index Fund found in the "Fund Summary" section under the "Principal Investment Risks" heading.

*In addition, the fund may operate as a non-diversified fund under the 1940 Act to the approximate extent the index is non-diversified. A non-diversified fund may invest a greater portion of its assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund*.

The following information replaces similar information for Fidelity® Total Market Index Fund found in the "Investment Details" section under the "Principal Investment Strategies" heading.

Geode may use statistical sampling techniques to attempt to replicate the returns of the index. Statistical sampling techniques attempt to match the investment characteristics of the index and the fund by taking into account such factors as capitalization, industry exposures, dividend yield, P/E ratio, P/B ratio, and earnings growth. Although the fund may not necessarily hold all of the same securities as the index, the fund generally invests in those constituents it does hold in approximately the same proportion as their index weightings.

The fund may operate as a non-diversified fund, as defined under the 1940 Act, to the approximate extent the index is non-diversified. The fund may therefore operate as non-diversified solely as a result of a change in relative market capitalization or index weighting of one or more constituents of the index. As a result, Geode may invest a significant percentage of the fund's assets in a single issuer or small number of issuers.

The following information replaces similar information found in the "Investment Details" section under the "Principal Investment Risks" heading.

Many factors affect each fund's performance. Developments that disrupt global economies and financial markets, such as public health emergencies, military conflicts, terrorism, government restrictions, political changes, and environmental disasters, may significantly affect a fund's investment performance. A fund's share price changes daily based on changes in market conditions and interest rates and in response to other economic, political, or financial developments. A fund's reaction to these developments will be affected by the types of securities in which the fund invests, the financial condition, industry and economic sector, and geographic location of an issuer, and the fund's level of investment in the securities of that issuer. In addition, because Fidelity® Total Market Index Fund may operate as a non-diversified fund, it may invest a significant percentage of assets in a single issuer, and Fidelity® Total Market Index Fund's performance could be closely tied to that one issuer and could be more volatile than the performance of more diversified funds. When you sell your shares they may be worth more or less than what you paid for them, which means that you could lose money by investing in a fund.

SIF-I-PSTK-1125-117 1.933378.117 November 10, 2025