# State Street(R) SPDR(R) Portfolio Long Term Treasury ETF

State Street(R) SPDR(R) Portfolio Long Term Treasury ETF is a ETF series of SPDR SERIES TRUST (series S000017329). Net assets $10.5B as of 2026-03-31. Index fund.

## Profile

- Series ID: S000017329
- Registrant: SPDR SERIES TRUST
- LEI: 549300GYQKAMF6JUVI06
- Net assets: $10.5B
- Total assets: $10.5B
- As of: 2026-03-31
- Type: ETF, Index

## Advisers

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

## Top holdings (99 reported)

_Showing 15 of 99 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [United States Treasury](https://search.stillhousedata.com/security/912810UK2) | — | $241.6M | 230.82% |
| [United States Treasury](https://search.stillhousedata.com/security/912810UM8) | — | $239.6M | 228.93% |
| [United States Treasury](https://search.stillhousedata.com/security/912810UP1) | — | $236.8M | 226.31% |
| [United States Treasury](https://search.stillhousedata.com/security/912810UA4) | — | $235.2M | 224.71% |
| [United States Treasury](https://search.stillhousedata.com/security/912810UG1) | — | $233.5M | 223.08% |
| [United States Treasury](https://search.stillhousedata.com/security/912810TV0) | — | $230.9M | 220.64% |
| [United States Treasury](https://search.stillhousedata.com/security/912810UE6) | — | $230.1M | 219.90% |
| [United States Treasury](https://search.stillhousedata.com/security/912810TX6) | — | $222.4M | 212.52% |
| [United States Treasury](https://search.stillhousedata.com/security/912810UC0) | — | $218.7M | 208.94% |
| [United States Treasury](https://search.stillhousedata.com/security/912810TT5) | — | $196.3M | 187.58% |
| [United States Treasury](https://search.stillhousedata.com/security/912810TL2) | — | $175.3M | 167.45% |
| [United States Treasury](https://search.stillhousedata.com/security/912810TA6) | — | $165.1M | 157.77% |
| [United States Treasury](https://search.stillhousedata.com/security/912810TN8) | — | $164.3M | 156.95% |
| [United States Treasury](https://search.stillhousedata.com/security/912810SX7) | — | $163.7M | 156.40% |
| [United States Treasury](https://search.stillhousedata.com/security/912810TR9) | — | $161.4M | 154.23% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $10.5B |
| 2025-12-31 | $11.0B |
| 2025-09-30 | $11.9B |
| 2025-06-30 | $11.3B |
| 2025-03-31 | $11.8B |
| 2024-12-31 | $10.4B |
| 2024-09-30 | $11.6B |
| 2024-06-30 | $10.0B |

## More

- [Registrant: SPDR SERIES TRUST](https://search.stillhousedata.com/registrant/1064642)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000017329.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.