FSTDX — Fidelity Series 5+ Year Inflation-Protected Bond Index Fund
Data updated: 2026-08-24
FSTDX — Fidelity Series 5+ Year Inflation-Protected Bond Index Fund. Long Treasury / Sovereign Bond. Holdings, fees, performance and SEC filings.
FSTDX Fund Overview
FSTDX — Fidelity Series 5+ Year Inflation-Protected Bond Index Fund is a US mutual fund managed by Fidelity Salem Street Trust, categorised as Long Treasury / Sovereign Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Fidelity Salem Street Trust
- Category: Long Treasury / Sovereign Bond
- Assets under management: $13.77B
- 1-year return: 3.4%
- Ticker: FSTDX
- SEC CIK: 0000035315
- SEC series ID: S000072689
- Share class ID: C000229124
FSTDX Holdings
Top 10 holdings of Fidelity Series 5+ Year Inflation-Protected Bond Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Ust Notes | 8.33% |
| Ust Notes | 7.88% |
| Ust Notes | 7.74% |
| Ust Notes | 7.39% |
| Ust Notes | 7.13% |
| Ust Notes | 7.11% |
| Ust Notes | 6.60% |
| Ust Notes | 6.44% |
| Ust Notes | 6.31% |
| Ust Notes | 5.57% |
FSTDX Portfolio Allocation
Asset-class allocation of Fidelity Series 5+ Year Inflation-Protected Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 99.4% |
FSTDX Performance
Total returns for FSTDX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.1% |
| 1 year | 3.4% |
| 3 years (annualised) | 2.7% |
FSTDX Risk Information
Risk metrics for FSTDX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 4.4%
FSTDX Costs and Fees
FSTDX costs about $0 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.00%
- Gross expense ratio: 0.00%
- Portfolio turnover: 26%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
FSTDX Cashflows
Over the 12 months to 2026-06, Fidelity Series 5+ Year Inflation-Protected Bond Index Fund had net inflows of $2.10B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $348.49M |
| 2026-05 | $560.04M |
| 2026-04 | −$358.37M |
| 2026-03 | $71.91M |
| 2026-02 | $253.48M |
| 2026-01 | $197.48M |
FSTDX Debt Constituents
Largest debt holdings of Fidelity Series 5+ Year Inflation-Protected Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Ust Notes | 8.33% |
| Ust Notes | 7.88% |
| Ust Notes | 7.74% |
| Ust Notes | 7.39% |
| Ust Notes | 7.13% |
| Ust Notes | 7.11% |
| Ust Notes | 6.60% |
| Ust Notes | 6.44% |
| Ust Notes | 6.31% |
| Ust Notes | 5.57% |
FSTDX Prospectus and SEC Filings
Official Fidelity Series 5+ Year Inflation-Protected Bond Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-02-24
- Prospectus (485BPOS) — filed 2025-02-25
- Prospectus (485BPOS) — filed 2024-02-26
- Portfolio holdings (N-PORT) — filed 2026-08-24
- Portfolio holdings (N-PORT) — filed 2026-05-26
- Portfolio holdings (N-PORT) — filed 2026-02-24
- Annual census (N-CEN) — filed 2026-03-12
- Annual census (N-CEN) — filed 2025-03-14
Related Funds
Other Long Treasury / Sovereign Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.