FSIWX Performance — Fidelity SAI Intermediate Treasury Bond Index Fund
Data updated: 2026-07-24
FSIWX returned −0.17% year to date and +3.88% over one year to May 2026. Over one year the fund trailed its Intermediate Government Bond category average: $100 grew to $104, against $105 for the category. Volatility over the past 12 months was 3.83% a year. In the 12 months to May 2026 the fund lost a net $1.7B, and assets reached $1.49B.
FSIWX Growth of $100
What $100 invested in Fidelity SAI Intermediate 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 | FSIWX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $104 | $105 |
| Since data start (Oct 2024 – May 2026) | $104 | $105 |
FSIWX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | −0.17% |
| 1 year | +3.88% |
FSIWX Annual Returns
Calendar-year total returns of Fidelity SAI Intermediate Treasury Bond Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | −0.17% |
| 2025 | +7.95% |
| 2024 (Oct–Dec) | −3.89% |
FSIWX 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% | +2.1% | −2.0% | −0.1% | 0.0% | — | — | — | — | — | — | — |
| 2025 | +0.6% | +2.4% | +0.5% | +1.3% | −1.1% | +1.4% | −0.4% | +1.6% | +0.4% | +0.7% | +0.9% | −0.5% |
| 2024 | — | — | — | — | — | — | — | — | — | −3.1% | +0.9% | −1.7% |
FSIWX Risk
Risk measures from monthly returns over Jun 2025 – May 2026.
- 1-year volatility (annualised): 3.83%
- Best month: +2.09% (Feb 2026)
- Worst month: −1.98% (Mar 2026)
FSIWX Fund Flows
Monthly money in and out of Fidelity SAI Intermediate Treasury Bond Index Fund, from SEC Form N-PORT.
- 12-month net flow: −$1.7B
- 12-month gross sales (incl. reinvestments): $1.2B
- Sales ÷ redemptions: 0.40×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $6.6M | $0 | $6.6M |
| Apr 2026 | $13.3M | $2.9B | −$2.9B |
| Mar 2026 | $261.3M | $0 | $261.3M |
| Feb 2026 | $12.1M | $0 | $12.1M |
| Jan 2026 | $112.0M | $0 | $112.0M |
| Dec 2025 | $64.3M | $0 | $64.3M |
| Nov 2025 | $11.3M | $0 | $11.3M |
| Oct 2025 | $60.8M | $0 | $60.8M |
| Sep 2025 | $135.3M | $0 | $135.3M |
| Aug 2025 | $159.9M | $0 | $159.9M |
| Jul 2025 | $84.0M | $0 | $84.0M |
| Jun 2025 | $258.3M | $0 | $258.3M |
FSIWX Assets Under Management
Net assets of Fidelity SAI Intermediate Treasury Bond Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $1.49B |
| 2026-02-28 | $4.25B |
| 2025-11-30 | $4.04B |
| 2025-08-31 | $3.78B |
| 2025-05-31 | $3.22B |
| 2025-02-28 | $2.87B |
| 2024-11-30 | $2.78B |
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.