FNSOX Performance — Fidelity Short-Term Bond Index Fund
Data updated: 2026-07-24
FNSOX returned +0.47% year to date and +3.76% over one year to May 2026. Annualised returns are +4.43% over 3 years and +1.67% over 5 years. The fund trailed its Short-Term Government Bond category average: $100 invested three years ago grew to $114, against $115 for the category, and to $104 over one year, against $104. Volatility over the past three years was 2.35% a year. In the 12 months to May 2026 the fund took in a net $664.9M, and assets reached $3.93B.
FNSOX Growth of $100
What $100 invested in Fidelity Short-Term Bond Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Short-Term Government Bond category average over the same months.
| Period | FNSOX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $104 | $104 |
| 3 years (Jun 2023 – May 2026) | $114 | $115 |
| 5 years (Jun 2021 – May 2026) | $109 | $111 |
| Since data start (Sep 2019 – May 2026) | $114 | $117 |
FNSOX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.47% |
| 1 year | +3.76% |
| 3 years (annualised) | +4.43% |
| 5 years (annualised) | +1.67% |
FNSOX Annual Returns
Calendar-year total returns of Fidelity Short-Term Bond Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +0.47% |
| 2025 | +5.99% |
| 2024 | +3.90% |
| 2023 | +4.89% |
| 2022 | −5.51% |
| 2021 | −1.12% |
| 2020 | +4.68% |
| 2019 (Sep–Dec) | +0.21% |
FNSOX 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% | +0.8% | −0.8% | +0.3% | +0.1% | — | — | — | — | — | — | — |
| 2025 | +0.5% | +1.0% | +0.5% | +0.9% | −0.3% | +0.8% | −0.1% | +1.0% | +0.3% | +0.3% | +0.5% | +0.2% |
| 2024 | +0.4% | −0.7% | +0.4% | −0.8% | +1.0% | +0.7% | +1.5% | +1.0% | +1.0% | −1.1% | +0.5% | −0.1% |
| 2023 | +1.3% | −1.2% | +1.8% | +0.5% | −0.5% | −0.6% | +0.4% | +0.2% | −0.4% | 0.0% | +1.7% | +1.6% |
| 2022 | −0.9% | −0.6% | −1.8% | −1.1% | +0.7% | −0.7% | +0.9% | −1.3% | −1.8% | −0.3% | +1.4% | 0.0% |
| 2021 | 0.0% | −0.3% | −0.2% | +0.3% | +0.2% | −0.2% | +0.4% | −0.1% | −0.2% | −0.6% | 0.0% | −0.2% |
| 2020 | +1.0% | +1.0% | +0.4% | +0.7% | +0.5% | +0.3% | +0.3% | 0.0% | −0.1% | 0.0% | +0.2% | +0.2% |
| 2019 | — | — | — | — | — | — | — | — | −0.2% | +0.3% | 0.0% | +0.1% |
FNSOX Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 2.35%
- 3-year Sharpe ratio: -0.03 (vs 4.5% risk-free rate)
- Best month: +1.71% (Nov 2023)
- Worst month: −1.10% (Oct 2024)
FNSOX Fund Flows
Monthly money in and out of Fidelity Short-Term Bond Index Fund, from SEC Form N-PORT.
- 12-month net flow: $664.9M
- 12-month gross sales (incl. reinvestments): $1.5B
- Sales ÷ redemptions: 1.81×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $390.8M | $49.1M | $341.8M |
| Apr 2026 | $107.9M | $107.7M | $198K |
| Mar 2026 | $84.2M | $80.3M | $3.9M |
| Feb 2026 | $95.6M | $109.5M | −$14.0M |
| Jan 2026 | $130.3M | $72.3M | $58.0M |
| Dec 2025 | $106.2M | $44.0M | $62.2M |
| Nov 2025 | $91.3M | $67.7M | $23.6M |
| Oct 2025 | $168.9M | $48.3M | $120.6M |
| Sep 2025 | $81.8M | $63.4M | $18.4M |
| Aug 2025 | $62.3M | $87.0M | −$24.7M |
| Jul 2025 | $97.2M | $55.9M | $41.2M |
| Jun 2025 | $71.0M | $37.3M | $33.7M |
FNSOX Assets Under Management
Net assets of Fidelity Short-Term Bond Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $3.93B |
| 2026-02-28 | $3.63B |
| 2025-11-30 | $3.53B |
| 2025-08-31 | $3.35B |
| 2025-05-31 | $3.27B |
| 2025-02-28 | $3.18B |
| 2024-11-30 | $3.02B |
| 2024-08-31 | $2.77B |
| 2024-05-31 | $2.62B |
| 2024-02-29 | $2.34B |
| 2023-11-30 | $2.30B |
| 2023-08-31 | $2.35B |
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.