Investment objective & strategy
As of June 24, 2025 · prospectusObjective. Fidelity Series Treasury Bill Index Fund seeks a high level of current income consistent with preservation of capital.
Strategy. Normally investing at least 80% of assets in securities included in the Bloomberg U.S. 3-6 Month Treasury Bill Index . The index is a market capitalization-weighted index of investment-grade, fixed-rate public obligations of the U.S. Treasury with maturities from 3 up to (but not including) 6 months, excluding zero coupon strips. 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. Using statistical sampling techniques based on duration, maturity, interest rate sensitivity, security structure, and credit quality to attempt to replicate the … Normally investing at least 80% of assets in securities included in the Bloomberg U.S. 3-6 Month Treasury Bill Index . The index is a market capitalization-weighted index of investment-grade, fixed-rate public obligations of the U.S. Treasury with maturities from 3 up to (but not including) 6 months, excluding zero coupon strips. 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. 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. 3-6 Month Treasury Bill Index using a smaller number of securities.
Top holdings
As of Jan. 31, 2026 · N-PORT| Security | Ticker | Value | % of fund |
|---|---|---|---|
| U.S. Treasury Bills | B | $171.63M | 8.85% |
| UST BILLS 0% 05/14/2026 | — | $171.55M | 8.84% |
| U.S. Treasury Bills | B | $169.37M | 8.73% |
| U.S. Treasury Bills | B | $107.05M | 5.52% |
| U.S. Treasury Bills | — | $106.97M | 5.51% |
| U.S. Treasury Bills | B | $106.90M | 5.51% |
| U.S. Treasury Bills | 912797SX | $106.78M | 5.50% |
| U.S. Treasury Bills | B | $105.56M | 5.44% |
| U.S. Treasury Bills | — | $105.22M | 5.42% |
| U.S. Treasury Bills | B | $104.95M | 5.41% |
Portfolio moves
Oct 31, 2025 → Jan 31, 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. |
|---|---|---|
| VANGUARD 0-3 MONTH TREASURY BILL ETF · VBIL | 73% | 0.06% |
| abrdn Bloomberg All Commodity Longer Dated Strategy K-1 Free ETF · BCD | 67% | 0.30% |
| abrdn Bloomberg All Commodity Strategy K-1 Free ETF · BCI | 64% | 0.26% |
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 June 24, 2025, from the fund's prospectus.
- Net assets and holdings count as of January 31, 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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