# Fidelity Series Long-Term Treasury Bond Index Fund

Fidelity Series Long-Term Treasury Bond Index Fund is a registered fund series of Fidelity Salem Street Trust (series S000054519). Net assets $19.3B as of 2026-05-31. Index fund.

## Profile

- Series ID: S000054519
- Registrant: Fidelity Salem Street Trust
- LEI: 549300ZIHCUEKKIMZ606
- Net assets: $19.3B
- Total assets: $19.3B
- As of: 2026-05-31
- Type: Index

## Advisers

- [FMR Investment Management (UK) Limited (Subadvisor)](https://search.stillhousedata.com/firm/108273)
- [Fidelity Management & Research Company LLC (Advisor)](https://search.stillhousedata.com/firm/108281)
- [Fidelity Management & Research (Hong Kong) Limited (Subadvisor)](https://search.stillhousedata.com/firm/148045)
- [Fidelity Management & Research (Japan) Limited (Subadvisor)](https://search.stillhousedata.com/firm/148239)

## Top holdings (90 reported)

_Showing 15 of 90 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810TD0) | — | $851.0M | 441.78% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810TV0) | — | $709.1M | 368.12% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810UG1) | — | $630.9M | 327.50% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810SY5) | — | $603.1M | 313.08% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810TC2) | — | $576.2M | 299.09% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810UE6) | — | $558.0M | 289.66% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810UC0) | — | $535.0M | 277.72% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810TW8) | — | $507.8M | 263.58% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810TF5) | — | $501.0M | 260.08% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810RK6) | — | $477.9M | 248.08% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810SZ2) | — | $470.8M | 244.41% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810UA4) | — | $453.7M | 235.51% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810SW9) | — | $436.9M | 226.82% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810TT5) | — | $435.0M | 225.79% |
| [UNITED STATES TREASURY BOND](https://search.stillhousedata.com/security/912810UP1) | — | $421.5M | 218.82% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-05-31 | $19.3B |
| 2026-02-28 | $20.6B |
| 2025-11-30 | $22.2B |
| 2025-08-31 | $22.2B |
| 2025-05-31 | $19.8B |
| 2025-02-28 | $21.4B |
| 2024-11-30 | $18.9B |
| 2024-08-31 | $19.6B |

## More

- [Registrant: Fidelity Salem Street Trust](https://search.stillhousedata.com/registrant/35315)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000054519.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.