# State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF

State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF is a ETF series of SPDR SERIES TRUST (series S000022922). Net assets $6.9B as of 2026-03-31. Index fund.

## Profile

- Series ID: S000022922
- Registrant: SPDR SERIES TRUST
- LEI: 549300RAN9OO0VDPBS19
- Net assets: $6.9B
- Total assets: $7.3B
- As of: 2026-03-31
- Type: ETF, Index

## Advisers

- [SSGA Funds Management, Inc. (Advisor)](https://search.stillhousedata.com/firm/111242)

## Top holdings (200 reported)

_Showing 15 of 200 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [State Street Global Advisors](https://search.stillhousedata.com/security/857492706) | — | $516.6M | 748.56% |
| [Freddie Mac](https://search.stillhousedata.com/security/3142J6C84) | — | $63.5M | 92.04% |
| [Freddie Mac](https://search.stillhousedata.com/security/3142J6BK8) | — | $61.1M | 88.61% |
| [Fannie Mae](https://search.stillhousedata.com/security/31418EBR0) | — | $57.4M | 83.22% |
| [Freddie Mac](https://search.stillhousedata.com/security/3132DWDR1) | — | $44.5M | 64.45% |
| [Government National Mortgage Association](https://search.stillhousedata.com/security/3618N5PJ2) | — | $43.0M | 62.28% |
| [Freddie Mac](https://search.stillhousedata.com/security/3132DWMY6) | — | $41.4M | 60.00% |
| [UMBS, TBA](https://search.stillhousedata.com/security/01F032641) | — | $41.1M | 59.62% |
| [Fannie Mae](https://search.stillhousedata.com/security/31418EGK0) | — | $37.5M | 54.28% |
| [Government National Mortgage Association](https://search.stillhousedata.com/security/21H050649) | — | $35.8M | 51.81% |
| [Fannie Mae](https://search.stillhousedata.com/security/31418D6B3) | — | $34.4M | 49.82% |
| [Freddie Mac](https://search.stillhousedata.com/security/3132DWKV4) | — | $33.3M | 48.26% |
| [UMBS, TBA](https://search.stillhousedata.com/security/01F020646) | — | $33.3M | 48.22% |
| [Fannie Mae](https://search.stillhousedata.com/security/3140XHHS9) | — | $32.3M | 46.80% |
| [Freddie Mac](https://search.stillhousedata.com/security/3132DWC68) | — | $31.7M | 45.88% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $6.9B |
| 2025-12-31 | $6.6B |
| 2025-09-30 | $6.4B |
| 2025-06-30 | $6.2B |
| 2025-03-31 | $5.9B |
| 2024-12-31 | $5.6B |
| 2024-09-30 | $5.6B |
| 2024-06-30 | $5.2B |

## More

- [Registrant: SPDR SERIES TRUST](https://search.stillhousedata.com/registrant/1064642)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000022922.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.