# Fidelity Hereford Street Trust

Fidelity Hereford Street Trust (CIK 917286) is an SEC-registered fund company with 1 reporting fund series and $2.0B in net assets as of 2026-04-30.

## Registrant

- CIK: 917286
- File number: 811-07139
- LEI: 549300KQI5JTFSYJTM18
- Address: 245 Summer Street, Boston, US-MA, 02210
- Phone: 1-800-FIDELITY
- Net assets: $2.0B
- Total assets: $2.0B
- Fund series: 1
- Latest report: 2026-04-30

## Fund series (1)

| Series | Net assets |
| --- | --- |
| [Fidelity Series Treasury Bill Index Fund](https://search.stillhousedata.com/fund/S000062807) | $2.0B |

## Largest reported holdings (across all series)

| Holding | Value |
| --- | --- |
| [UST BILLS](https://search.stillhousedata.com/security/912797RS8) | $175.9M |
| [UST BILLS](https://search.stillhousedata.com/security/912797RF6) | $169.7M |
| [UST BILLS](https://search.stillhousedata.com/security/912797RG4) | $167.9M |
| [UST BILLS](https://search.stillhousedata.com/security/912797TF4) | $107.8M |
| [UST BILLS](https://search.stillhousedata.com/security/912797UG0) | $107.3M |
| [UST BILLS](https://search.stillhousedata.com/security/912797UH8) | $107.2M |
| [UST BILLS](https://search.stillhousedata.com/security/912797UF2) | $104.5M |
| [UST BILLS](https://search.stillhousedata.com/security/912797TN7) | $103.7M |
| [UST BILLS](https://search.stillhousedata.com/security/912797TW7) | $103.3M |
| [UST BILLS](https://search.stillhousedata.com/security/912797TQ0) | $103.2M |
| [UST BILLS](https://search.stillhousedata.com/security/912797TY3) | $103.1M |
| [UST BILLS](https://search.stillhousedata.com/security/912797TP2) | $100.7M |
| [UST BILLS](https://search.stillhousedata.com/security/912797TX5) | $99.9M |
| [UST BILLS](https://search.stillhousedata.com/security/912797UN5) | $96.8M |
| [UST BILLS](https://search.stillhousedata.com/security/912797UP0) | $96.7M |

## More

- [CIK 917286 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=917286&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/registrant/917286.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.