# EDGAR Filing Document

**Accession Number:** 0000036405
**File Stem:** 0001104659-25-074644
**Filing Date:** 2025-8
**Character Count:** 1351
**Document Hash:** d303fd905088d67f8a14254ddcc0c4af
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-074644.hdr.sgml**: 20250806

**ACCESSION NUMBER**: 0001104659-25-074644

**CONFORMED SUBMISSION TYPE**: 40-33

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250806

**DATE AS OF CHANGE**: 20250806

**EFFECTIVENESS DATE**: 20250806

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** VANGUARD INDEX FUNDS
- **CENTRAL INDEX KEY:** 0000036405

**ORGANIZATION NAME:**
- **EIN:** 231999755
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 40-33
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-02652
- **FILM NUMBER:** 251188967

**BUSINESS ADDRESS:**
- **STREET 1:** PO BOX 2600
- **STREET 2:** V26
- **CITY:** VALLEY FORGE
- **STATE:** PA
- **ZIP:** 19482
- **BUSINESS PHONE:** 6106691000

**MAIL ADDRESS:**
- **STREET 1:** PO BOX 2600
- **STREET 2:** V26
- **CITY:** VALLEY FORGE
- **STATE:** PA
- **ZIP:** 19482

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** VANGUARD INDEX FUNDS/
- **DATE OF NAME CHANGE:** 20011121

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** VANGUARD INDEX TRUST
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIRST INDEX INVESTMENT TRUST
- **DATE OF NAME CHANGE:** 19800904

### Attached PDF Documents

**Attachment 1:** `tm2522360d1_4033.pdf`

_No text found in this document._