FSTDX Performance — Fidelity Series 5+ Year Inflation-Protected Bond Index Fund
Data updated: 2026-08-24
FSTDX returned +1.11% year to date and +3.37% over one year to Jun 2026. The annualised 3-year return is +2.70%. Against its Long-Term Government Bond category average the fund came out ahead over three years but behind over one: $100 invested three years ago grew to $108, against $104 for the category, and to $103 over one year, against $104. Volatility over the past three years was 6.80% a year. In the 12 months to Jun 2026 the fund took in a net $2.1B, and assets reached $13.77B.
FSTDX Growth of $100
What $100 invested in Fidelity Series 5+ Year Inflation-Protected Bond Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Long-Term Government Bond category average over the same months.
| Period | FSTDX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $103 | $104 |
| 3 years (Jul 2023 – Jun 2026) | $108 | $104 |
| Since data start (Sep 2021 – Jun 2026) | $92 | $81 |
FSTDX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +1.11% |
| 1 year | +3.37% |
| 3 years (annualised) | +2.70% |
FSTDX Annual Returns
Calendar-year total returns of Fidelity Series 5+ Year Inflation-Protected Bond Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +1.11% |
| 2025 | +7.37% |
| 2024 | −0.41% |
| 2023 | +2.81% |
| 2022 | −19.04% |
| 2021 (Sep–Dec) | +2.10% |
FSTDX 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 | +0.4% | +2.2% | −2.6% | +1.1% | +0.4% | −0.4% | — | — | — | — | — | — |
| 2025 | +1.5% | +3.2% | +0.4% | −0.8% | −0.8% | +1.5% | −0.2% | +1.7% | +1.0% | +0.7% | +0.1% | −1.1% |
| 2024 | +0.3% | −1.8% | +0.8% | −2.9% | +2.4% | +0.9% | +2.6% | +0.9% | +1.9% | −3.0% | +0.5% | −2.9% |
| 2023 | +3.2% | −2.1% | +3.7% | −0.1% | −1.6% | −0.4% | −0.2% | −2.0% | −3.6% | −1.8% | +4.3% | +3.9% |
| 2022 | −3.4% | +0.7% | −2.6% | −4.1% | −2.2% | −4.5% | +6.6% | −3.6% | −9.6% | +1.4% | +3.3% | −2.0% |
| 2021 | — | — | — | — | — | — | — | — | −1.2% | +1.4% | +1.7% | +0.2% |
FSTDX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 6.80%
- 3-year Sharpe ratio: -0.26 (vs 4.5% risk-free rate)
- Best month: +4.28% (Nov 2023)
- Worst month: −3.60% (Sep 2023)
FSTDX Fund Flows
Monthly money in and out of Fidelity Series 5+ Year Inflation-Protected Bond Index Fund, from SEC Form N-PORT.
- 12-month net flow: $2.1B
- 12-month gross sales (incl. reinvestments): $4.0B
- Sales ÷ redemptions: 2.12×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $482.7M | $134.3M | $348.5M |
| May 2026 | $662.3M | $102.2M | $560.0M |
| Apr 2026 | $76.2M | $434.5M | −$358.4M |
| Mar 2026 | $214.3M | $142.4M | $71.9M |
| Feb 2026 | $328.3M | $74.9M | $253.5M |
| Jan 2026 | $319.2M | $121.8M | $197.5M |
| Dec 2025 | $523.2M | $217.7M | $305.6M |
| Nov 2025 | $192.8M | $88.5M | $104.3M |
| Oct 2025 | $372.6M | $186.6M | $186.0M |
| Sep 2025 | $185.9M | $107.6M | $78.4M |
| Aug 2025 | $191.6M | $147.0M | $44.6M |
| Jul 2025 | $417.0M | $112.7M | $304.3M |
FSTDX Assets Under Management
Net assets of Fidelity Series 5+ Year Inflation-Protected Bond Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $13.77B |
| 2026-03-31 | $13.08B |
| 2025-12-31 | $12.57B |
| 2025-09-30 | $12.39B |
| 2025-06-30 | $11.75B |
| 2025-03-31 | $11.42B |
| 2024-12-31 | $10.80B |
| 2024-09-30 | $11.01B |
| 2024-06-30 | $10.40B |
| 2024-03-31 | $10.05B |
| 2023-12-31 | $9.80B |
| 2023-09-30 | $8.98B |
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.