FUTBX Performance — Fidelity SAI U.S. Treasury Bond Index Fund
Data updated: 2026-07-24
FUTBX returned +0.18% year to date and +3.66% over one year to May 2026. Annualised returns are +2.84% over 3 years and −0.34% over 5 years. The fund trailed its Intermediate Government Bond category average: $100 invested three years ago grew to $109, against $112 for the category, and to $104 over one year, against $105. Volatility over the past three years was 4.98% a year. In the 12 months to May 2026 the fund took in a net $26.4M, and assets reached $8.79B.
FUTBX Growth of $100
What $100 invested in Fidelity SAI U.S. Treasury Bond Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Government Bond category average over the same months.
| Period | FUTBX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $104 | $105 |
| 3 years (Jun 2023 – May 2026) | $109 | $112 |
| 5 years (Jun 2021 – May 2026) | $98 | $104 |
| Since data start (Sep 2019 – May 2026) | $101 | $111 |
FUTBX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.18% |
| 1 year | +3.66% |
| 3 years (annualised) | +2.84% |
| 5 years (annualised) | −0.34% |
FUTBX Annual Returns
Calendar-year total returns of Fidelity SAI U.S. Treasury Bond Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +0.18% |
| 2025 | +6.11% |
| 2024 | +0.73% |
| 2023 | +4.17% |
| 2022 | −12.65% |
| 2021 | −2.40% |
| 2020 | +7.99% |
| 2019 (Sep–Dec) | −1.82% |
FUTBX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +0.1% | +1.8% | −1.8% | −0.1% | +0.1% | — | — | — | — | — | — | — |
| 2025 | +0.6% | +2.1% | +0.2% | +0.7% | −1.0% | +1.2% | −0.5% | +1.1% | +0.8% | +0.6% | +0.7% | −0.5% |
| 2024 | −0.1% | −1.3% | +0.6% | −2.3% | +1.5% | +1.0% | +2.1% | +1.4% | +1.1% | −2.4% | +0.8% | −1.5% |
| 2023 | +2.8% | −2.3% | +2.8% | +0.5% | −1.2% | −0.7% | −0.3% | −0.5% | −2.3% | −1.2% | +3.5% | +3.3% |
| 2022 | −1.8% | −0.6% | −3.1% | −3.2% | +0.2% | −1.0% | +1.7% | −2.6% | −3.4% | −1.4% | +2.6% | −0.8% |
| 2021 | −0.9% | −1.9% | −1.5% | +0.7% | +0.3% | +0.8% | +1.4% | −0.2% | −1.1% | 0.0% | +0.8% | −0.7% |
| 2020 | +2.6% | +2.7% | +3.0% | +0.3% | −0.2% | +0.1% | +1.2% | −1.2% | +0.2% | −1.1% | +0.4% | −0.2% |
| 2019 | — | — | — | — | — | — | — | — | −0.9% | +0.1% | −0.3% | −0.7% |
FUTBX Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 4.98%
- 3-year Sharpe ratio: -0.33 (vs 4.5% risk-free rate)
- Best month: +3.45% (Nov 2023)
- Worst month: −2.35% (Oct 2024)
FUTBX Fund Flows
Monthly money in and out of Fidelity SAI U.S. Treasury Bond Index Fund, from SEC Form N-PORT.
- 12-month net flow: $26.4M
- 12-month gross sales (incl. reinvestments): $1.7B
- Sales ÷ redemptions: 1.02×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $568.1M | $51.8M | $516.3M |
| Apr 2026 | $53.2M | $54.4M | −$1.2M |
| Mar 2026 | $359.6M | $49.6M | $310.0M |
| Feb 2026 | $52.1M | $46.4M | $5.7M |
| Jan 2026 | $47.4M | $53.0M | −$5.6M |
| Dec 2025 | $119.5M | $797.4M | −$677.8M |
| Nov 2025 | $68.4M | $255.7M | −$187.3M |
| Oct 2025 | $67.2M | $70.3M | −$3.0M |
| Sep 2025 | $56.3M | $92.5M | −$36.3M |
| Aug 2025 | $126.7M | $64.4M | $62.3M |
| Jul 2025 | $53.4M | $63.4M | −$9.9M |
| Jun 2025 | $109.6M | $56.3M | $53.2M |
FUTBX Assets Under Management
Net assets of Fidelity SAI U.S. Treasury Bond Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $8.79B |
| 2026-02-28 | $8.16B |
| 2025-11-30 | $8.85B |
| 2025-08-31 | $8.95B |
| 2025-05-31 | $8.74B |
| 2025-02-28 | $9.59B |
| 2024-11-30 | $10.63B |
| 2024-08-31 | $16.39B |
| 2024-05-31 | $15.17B |
| 2024-02-29 | $15.61B |
| 2023-11-30 | $13.02B |
| 2023-08-31 | $14.96B |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.