FNDSX Performance — Fidelity Sustainability Bond Index Fund
Data updated: 2026-07-24
FNDSX returned +0.53% year to date and +5.01% over one year to May 2026. Annualised returns are +3.84% over 3 years and +0.12% over 5 years. The fund trailed its Intermediate Core Bond category average: $100 invested three years ago grew to $112, against $115 for the category, and to $105 over one year, against $105. Volatility over the past three years was 5.49% a year. In the 12 months to May 2026 the fund took in a net $128.6M, and assets reached $661.89M.
FNDSX Growth of $100
What $100 invested in Fidelity Sustainability Bond Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Core Bond category average over the same months.
| Period | FNDSX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $105 | $105 |
| 3 years (Jun 2023 – May 2026) | $112 | $115 |
| 5 years (Jun 2021 – May 2026) | $101 | $103 |
| Since data start (Sep 2019 – May 2026) | $105 | $109 |
FNDSX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.53% |
| 1 year | +5.01% |
| 3 years (annualised) | +3.84% |
| 5 years (annualised) | +0.12% |
FNDSX Annual Returns
Calendar-year total returns of Fidelity Sustainability Bond Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +0.53% |
| 2025 | +7.02% |
| 2024 | +1.23% |
| 2023 | +5.43% |
| 2022 | −12.90% |
| 2021 | −1.97% |
| 2020 | +7.49% |
| 2019 (Sep–Dec) | −0.50% |
FNDSX 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 | +0.3% | +1.6% | −1.8% | +0.1% | +0.3% | — | — | — | — | — | — | — |
| 2025 | +0.5% | +2.1% | +0.1% | +0.4% | −0.8% | +1.5% | −0.3% | +1.3% | +1.0% | +0.6% | +0.6% | −0.3% |
| 2024 | −0.2% | −1.5% | +0.8% | −2.4% | +1.6% | +1.0% | +2.4% | +1.4% | +1.4% | −2.4% | +0.9% | −1.6% |
| 2023 | +3.1% | −2.5% | +2.4% | +0.7% | −1.1% | −0.4% | 0.0% | −0.6% | −2.5% | −1.7% | +4.5% | +3.6% |
| 2022 | −2.0% | −1.1% | −2.7% | −3.8% | +0.7% | −1.6% | +2.5% | −2.8% | −4.3% | −1.2% | +3.6% | −0.7% |
| 2021 | −0.8% | −1.6% | −1.2% | +0.8% | +0.2% | +0.8% | +1.1% | −0.3% | −0.8% | −0.1% | +0.2% | −0.3% |
| 2020 | +1.9% | +1.8% | +0.1% | +1.5% | +0.4% | +0.6% | +1.4% | −0.8% | −0.1% | −0.5% | +0.9% | +0.1% |
| 2019 | — | — | — | — | — | — | — | — | −0.5% | +0.2% | 0.0% | −0.2% |
FNDSX Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 5.49%
- 3-year Sharpe ratio: -0.12 (vs 4.5% risk-free rate)
- Best month: +4.54% (Nov 2023)
- Worst month: −2.50% (Sep 2023)
FNDSX Fund Flows
Monthly money in and out of Fidelity Sustainability Bond Index Fund, from SEC Form N-PORT.
- 12-month net flow: $128.6M
- 12-month gross sales (incl. reinvestments): $315.0M
- Sales ÷ redemptions: 1.69×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $36.5M | $8.2M | $28.3M |
| Apr 2026 | $20.8M | $26.1M | −$5.3M |
| Mar 2026 | $25.8M | $47.7M | −$21.8M |
| Feb 2026 | $26.2M | $9.6M | $16.6M |
| Jan 2026 | $26.4M | $15.6M | $10.8M |
| Dec 2025 | $35.0M | $9.8M | $25.2M |
| Nov 2025 | $23.7M | $16.1M | $7.7M |
| Oct 2025 | $21.7M | $16.3M | $5.4M |
| Sep 2025 | $19.8M | $7.7M | $12.1M |
| Aug 2025 | $19.7M | $11.0M | $8.7M |
| Jul 2025 | $18.3M | $11.0M | $7.2M |
| Jun 2025 | $41.1M | $7.5M | $33.6M |
FNDSX Assets Under Management
Net assets of Fidelity Sustainability Bond Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $661.89M |
| 2026-02-28 | $676.35M |
| 2025-11-30 | $620.07M |
| 2025-08-31 | $586.90M |
| 2025-05-31 | $529.12M |
| 2025-02-28 | $517.68M |
| 2024-11-30 | $487.05M |
| 2024-08-31 | $453.63M |
| 2024-05-31 | $402.70M |
| 2024-02-29 | $377.75M |
| 2023-11-30 | $344.81M |
| 2023-08-31 | $325.09M |
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.