# State Street(R) SPDR(R) Bloomberg 1-3 Month T-Bill ETF

State Street(R) SPDR(R) Bloomberg 1-3 Month T-Bill ETF is a ETF series of SPDR SERIES TRUST (series S000017326). Net assets $50.0B as of 2026-03-31. Index fund.

## Profile

- Series ID: S000017326
- Registrant: SPDR SERIES TRUST
- LEI: 549300GQCVCME1YJ6B50
- Net assets: $50.0B
- Total assets: $52.0B
- As of: 2026-03-31
- Type: ETF, Index

## Advisers

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

## Top holdings (23 reported)

_Showing 15 of 23 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [United States Treasury](https://search.stillhousedata.com/security/912797SP3) | — | $5.2B | 1033.17% |
| [United States Treasury](https://search.stillhousedata.com/security/912797QN0) | — | $4.6B | 927.63% |
| [United States Treasury](https://search.stillhousedata.com/security/912797QX8) | — | $4.4B | 878.32% |
| [United States Treasury](https://search.stillhousedata.com/security/912797TE7) | — | $3.5B | 697.67% |
| [United States Treasury](https://search.stillhousedata.com/security/912797SW8) | — | $3.5B | 692.70% |
| [United States Treasury](https://search.stillhousedata.com/security/912797SX6) | — | $3.4B | 679.13% |
| [United States Treasury](https://search.stillhousedata.com/security/912797TD9) | — | $3.4B | 678.25% |
| [United States Treasury](https://search.stillhousedata.com/security/912797SV0) | — | $3.2B | 643.40% |
| [United States Treasury](https://search.stillhousedata.com/security/912797TL1) | — | $3.1B | 627.70% |
| [United States Treasury](https://search.stillhousedata.com/security/912797TR8) | — | $2.8B | 568.32% |
| [United States Treasury](https://search.stillhousedata.com/security/912797TS6) | — | $2.7B | 530.09% |
| [United States Treasury](https://search.stillhousedata.com/security/912797TT4) | — | $2.6B | 529.65% |
| [State Street Global Advisors](https://search.stillhousedata.com/security/857492706) | — | $2.0B | 397.06% |
| [United States Treasury](https://search.stillhousedata.com/security/912797TU1) | — | $1.3B | 259.74% |
| [United States Treasury](https://search.stillhousedata.com/security/912797UA3) | — | $1.3B | 254.36% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $50.0B |
| 2025-12-31 | $42.7B |
| 2025-09-30 | $42.1B |
| 2025-06-30 | $42.8B |
| 2025-03-31 | $41.1B |
| 2024-12-31 | $36.1B |
| 2024-09-30 | $33.6B |
| 2024-06-30 | $32.8B |

## More

- [Registrant: SPDR SERIES TRUST](https://search.stillhousedata.com/registrant/1064642)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000017326.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.