FBLTX — Fidelity SAI Long-Term Treasury Bond Index Fund
Data updated: 2026-07-24
FBLTX — Fidelity SAI Long-Term Treasury Bond Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Treasury / Sovereign Bond · $13.01B AUM · 0.03% expense ratio · 4.0% 1-yr return. From SEC regulatory filings.
FBLTX Fund Overview
FBLTX — Fidelity SAI Long-Term Treasury 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: $13.01B
- 1-year return: 4.0%
- Ticker: FBLTX
- SEC CIK: 0000035315
- SEC series ID: S000051138
- Share class ID: C000161035
FBLTX Holdings
Top 10 holdings of Fidelity SAI Long-Term Treasury Bond Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury Bond | 5.15% |
| United States Treasury Bond | 4.46% |
| United States Treasury Bond | 4.19% |
| United States Treasury Bond | 4.02% |
| United States Treasury Bond | 4.00% |
| United States Treasury Bond | 3.87% |
| United States Treasury Bond | 3.82% |
| United States Treasury Bond | 3.57% |
| United States Treasury Bond | 3.37% |
| United States Treasury Bond | 3.23% |
FBLTX Portfolio Allocation
Asset-class allocation of Fidelity SAI Long-Term Treasury Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 98.6% |
| Cash & Equivalents | 1.0% |
FBLTX Performance
Total returns for FBLTX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.2% |
| 1 year | 4.0% |
| 3 years (annualised) | -1.9% |
| 5 years (annualised) | -6.1% |
FBLTX Risk Information
Risk metrics for FBLTX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 8.5%
FBLTX Costs and Fees
FBLTX costs about $3 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.03%
- Gross expense ratio: 0.05%
- Portfolio turnover: 25%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
FBLTX Cashflows
Over the 12 months to 2026-02, Fidelity SAI Long-Term Treasury Bond Index Fund had net inflows of $6.56B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $381.55M |
| 2026-01 | $573.77M |
| 2025-12 | $2.75B |
| 2025-11 | $60.08M |
| 2025-10 | $130.83M |
| 2025-09 | $1.31B |
FBLTX Debt Constituents
Largest debt holdings of Fidelity SAI Long-Term Treasury Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury Bond | 5.15% |
| United States Treasury Bond | 4.46% |
| United States Treasury Bond | 4.19% |
| United States Treasury Bond | 4.02% |
| United States Treasury Bond | 4.00% |
| United States Treasury Bond | 3.87% |
| United States Treasury Bond | 3.82% |
| United States Treasury Bond | 3.57% |
| United States Treasury Bond | 3.37% |
| United States Treasury Bond | 3.23% |
FBLTX Prospectus and SEC Filings
Official Fidelity SAI Long-Term Treasury Bond Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
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.