FSIWX — Fidelity SAI Intermediate Treasury Bond Index Fund
Data updated: 2026-07-24
FSIWX — Fidelity SAI Intermediate Treasury Bond Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Intermediate Treasury / Sovereign Bond · $1.49B AUM · 0.03% expense ratio · 3.9% 1-yr return. From SEC regulatory filings.
FSIWX Fund Overview
FSIWX — Fidelity SAI Intermediate Treasury Bond Index Fund is a US mutual fund managed by Fidelity Salem Street Trust, categorised as Intermediate 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: Intermediate Treasury / Sovereign Bond
- Assets under management: $1.49B
- 1-year return: 3.9%
- Ticker: FSIWX
- SEC CIK: 0000035315
- SEC series ID: S000086561
- Share class ID: C000252149
FSIWX Holdings
Top 10 holdings of Fidelity SAI Intermediate Treasury Bond Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Ust Notes | 17.17% |
| Ust Notes | 10.44% |
| Ust Notes | 8.81% |
| Ust Notes | 7.79% |
| Ust Notes | 7.43% |
| Ust Notes | 7.17% |
| Ust Notes | 7.07% |
| Ust Notes | 5.34% |
| Ust Notes | 4.38% |
| Ust Notes | 4.02% |
FSIWX Portfolio Allocation
Asset-class allocation of Fidelity SAI Intermediate Treasury Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 98.4% |
| Cash & Equivalents | 1.0% |
FSIWX Performance
Total returns for FSIWX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.2% |
| 1 year | 3.9% |
FSIWX Risk Information
Risk metrics for FSIWX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.8%
FSIWX Costs and Fees
FSIWX costs about $3 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.03%
- Gross expense ratio: 0.04%
- Portfolio turnover: 43%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
FSIWX Cashflows
Over the 12 months to 2026-02, Fidelity SAI Intermediate Treasury Bond Index Fund had net inflows of $1.24B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $12.14M |
| 2026-01 | $111.96M |
| 2025-12 | $64.31M |
| 2025-11 | $11.27M |
| 2025-10 | $60.79M |
| 2025-09 | $135.27M |
FSIWX Debt Constituents
Largest debt holdings of Fidelity SAI Intermediate Treasury Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Ust Notes | 17.17% |
| Ust Notes | 10.44% |
| Ust Notes | 8.81% |
| Ust Notes | 7.79% |
| Ust Notes | 7.43% |
| Ust Notes | 7.17% |
| Ust Notes | 7.07% |
| Ust Notes | 5.34% |
| Ust Notes | 4.38% |
| Ust Notes | 4.02% |
FSIWX Prospectus and SEC Filings
Official Fidelity SAI Intermediate Treasury Bond Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Intermediate 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.