# VANGUARD MORTGAGE-BACKED SECURITIES INDEX FUND

VANGUARD MORTGAGE-BACKED SECURITIES INDEX FUND is a ETF series of VANGUARD SCOTTSDALE FUNDS (series S000026865). Net assets $17.0B as of 2026-05-31. Index fund.

## Profile

- Series ID: S000026865
- Registrant: VANGUARD SCOTTSDALE FUNDS
- LEI: 157FPOCFDEEVUKWE4M41
- Net assets: $17.0B
- Total assets: $18.0B
- As of: 2026-05-31
- Type: ETF, Index

## Advisers

- [The Vanguard Group, Inc. (Advisor)](https://search.stillhousedata.com/firm/105958)

## Top holdings (200 reported)

_Showing 15 of 200 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| Vanguard Cmt Funds-Vanguard Market Liquidity Fund | — | $866.4M | 508.21% |
| [Fannie Mae or Freddie Mac](https://search.stillhousedata.com/security/01F020661) | — | $89.1M | 52.29% |
| [Ginnie Mae II Pool](https://search.stillhousedata.com/security/21H052678) | — | $61.7M | 36.17% |
| [Ginnie Mae II Pool](https://search.stillhousedata.com/security/3618N5A33) | — | $54.5M | 31.98% |
| [Ginnie Mae II Pool](https://search.stillhousedata.com/security/3618N56H7) | — | $53.1M | 31.16% |
| [Fannie Mae Pool](https://search.stillhousedata.com/security/3140Y9B86) | — | $50.2M | 29.45% |
| [Ginnie Mae II Pool](https://search.stillhousedata.com/security/3618N6BE6) | — | $49.2M | 28.85% |
| [Ginnie Mae II Pool](https://search.stillhousedata.com/security/21H052660) | — | $49.2M | 28.83% |
| [Ginnie Mae II Pool](https://search.stillhousedata.com/security/3618N5A25) | — | $48.1M | 28.23% |
| [Freddie Mac Pool](https://search.stillhousedata.com/security/3132E0TL6) | — | $46.8M | 27.45% |
| [Freddie Mac Pool](https://search.stillhousedata.com/security/3142J6DY6) | — | $45.6M | 26.76% |
| [Freddie Mac Pool](https://search.stillhousedata.com/security/3132DWBP7) | — | $43.7M | 25.64% |
| [Fannie Mae or Freddie Mac](https://search.stillhousedata.com/security/01F030660) | — | $42.9M | 25.18% |
| [Freddie Mac Pool](https://search.stillhousedata.com/security/3142J6C84) | — | $41.4M | 24.28% |
| [Freddie Mac Pool](https://search.stillhousedata.com/security/3142J6B28) | — | $40.8M | 23.95% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-05-31 | $17.0B |
| 2026-02-28 | $16.9B |
| 2025-11-30 | $16.2B |
| 2025-08-31 | $16.4B |
| 2025-05-31 | $16.0B |
| 2025-02-28 | $21.7B |
| 2024-11-30 | $20.0B |
| 2024-08-31 | $19.8B |

## More

- [Registrant: VANGUARD SCOTTSDALE FUNDS](https://search.stillhousedata.com/registrant/1021882)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000026865.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.