Investment objective & strategy
As of April 24, 2025 · prospectusObjective. Fidelity SAI U.S. Treasury Bond Index Fund seeks to provide investment results that correspond to the total return of U.S. treasury bonds.
Strategy. Normally investing at least 80% of assets in debt securities included in the Bloomberg U.S. Treasury Index. The index is a market value-weighted index of public obligations of the U.S. Treasury with maturities of one year or more. Effective December 11, 2025, derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally maintaining a dollar-weighted average maturity of one year or more. Using statistical sampling techniques based on duration, maturity, interest rate sensitivity, security structure, and credit quality to attempt to replicate the returns of … Normally investing at least 80% of assets in debt securities included in the Bloomberg U.S. Treasury Index. The index is a market value-weighted index of public obligations of the U.S. Treasury with maturities of one year or more. Effective December 11, 2025, derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally maintaining a dollar-weighted average maturity of one year or more. Using statistical sampling techniques based on duration, maturity, interest rate sensitivity, security structure, and credit quality to attempt to replicate the returns of the Bloomberg U.S. Treasury Index using a smaller number of securities.
Top holdings
As of Feb. 28, 2026 · N-PORT| Security | Ticker | Value | % of fund |
|---|---|---|---|
| US TREASURY N/B | — | $183.54M | 2.25% |
| US TREASURY N/B | — | $157.73M | 1.93% |
| US TREASURY N/B | — | $151.72M | 1.86% |
| US TREASURY N/B | T | $145.81M | 1.79% |
| US TREASURY N/B | — | $141.39M | 1.73% |
| US TREASURY N/B | — | $137.51M | 1.69% |
| US TREASURY N/B | — | $128.88M | 1.58% |
| US TREASURY N/B | — | $122.08M | 1.50% |
| US TREASURY N/B | — | $121.19M | 1.49% |
| US TREASURY N/B | — | $116.58M | 1.43% |
Portfolio moves
Nov 30, 2025 → Feb 28, 2026How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.
Similar funds
Funds whose portfolios most overlap this one, by weight| Fund | Overlap | Net exp. |
|---|---|---|
| Columbia U.S. Treasury Index Fund · LUTAX, IUTIX, CUTRX, CUTYX | 55% | 0.17% |
| VANGUARD TOTAL TREASURY ETF · VTG | 54% | 0.03% |
| State Street(R) SPDR(R) Portfolio Treasury ETF · SPTB | 54% | 0.03% |
Advisers
| Firm | Role |
|---|---|
| FMR Investment Management (UK) Limited | Sub-adviser |
| Fidelity Management & Research (Japan) Limited | Sub-adviser |
| Fidelity Management & Research (Hong Kong) Limited | Sub-adviser |
| Fidelity Management & Research Company LLC | Adviser |
Footnotes
- Expense ratio as of April 24, 2025, from the fund's prospectus.
- Net assets and holdings count as of February 28, 2026, from the fund's N-PORT filing.
- Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).
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