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 Bond5.15%
United States Treasury Bond4.46%
United States Treasury Bond4.19%
United States Treasury Bond4.02%
United States Treasury Bond4.00%
United States Treasury Bond3.87%
United States Treasury Bond3.82%
United States Treasury Bond3.57%
United States Treasury Bond3.37%
United States Treasury Bond3.23%

View all FBLTX holdings

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 classAllocation
Fixed Income98.6%
Cash & Equivalents1.0%

FBLTX Performance

Total returns for FBLTX (as of 2026-08-01), from SEC filings.

PeriodTotal return
YTD-0.2%
1 year4.0%
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.

MonthNet 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 Bond5.15%
United States Treasury Bond4.46%
United States Treasury Bond4.19%
United States Treasury Bond4.02%
United States Treasury Bond4.00%
United States Treasury Bond3.87%
United States Treasury Bond3.82%
United States Treasury Bond3.57%
United States Treasury Bond3.37%
United States Treasury Bond3.23%

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.