Fidelity SAI Long-Term Treasury Bond Index Fund
Fidelity Salem Street Trust · Series S000051138 · 1 share classes
data updated 2026-09-08
Fund profile
As filed in the prospectus · 2026 Q2
Fidelity SAI Long-Term Treasury Bond Index Fund seeks a high level of current income.
The fund tracks the Bloomberg U.S. 20+ Year Treasury Bond Index using statistical sampling techniques, holding a smaller number of securities selected to replicate index returns based on duration, maturity, and interest rate sensitivity. Because the fund samples rather than holds all index constituents, its returns may diverge from the index.
| Share class | Gross | Net |
|---|---|---|
| FBLTX | 0.05% | 0.03% |
Net is what a holder pays after the adviser's contractual waiver; gross is before it. A waiver can expire.
Portfolio turnover 25.00% · as of 2026 Q2
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q2
| Bonds | 98.59% |
| Cash & short-term | 1.02% |
Latest quarter
What changed since the fund's previous filing
New: UNITED STATES TREASURY BOND
Exited: UNITED STATES TREASURY BOND
Return profile
Total return as filed — price change plus distributions reinvested · trailing figures to Apr 2026
May 2026 has been filed since the trailing figures were struck, so it is not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
Debt profile
What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-05-31
Share of the fund's debt by how its coupon behaves — the fact that decides whether a rate move reaches this portfolio at all.
| Fixed rate | 100.0% |
Share of the fund's debt value in each maturity band, shortest first.
| 10y+ | 100.0% |
Based on what filers reported; a filer that never reported a flag also reads as none.
Risk profile
Interest-rate and credit-spread sensitivity, both in years · as of 2026Q2
Most of this fund’s sensitivity is to interest rates, with credit spreads carrying nearly as much.
Where the loss would come from. The two shocks are the same size, so this is the balance of the fund's two sensitivities rather than a bet on one moving more.
| Interest rates | 50% |
| Credit spreads | 50% |
Filers report the impact of a 0.01% move only, so the total is our own scaling of that one number and overstates the loss on most bonds — read it as approximate, never as precise. The two sensitivities overlap rather than add up: they measure the same positions against different shocks, which is why the durations above are shown side by side and never summed.
Share of the fund's spread duration carried by each credit tier.
| Investment grade | +15.63 yr |
Share of duration at each point, shortest first. A positive figure loses value when spreads widen; a negative one offsets — a credit hedge.
| 10 yr | 2.30 yr | 14% |
| 30 yr | 13.81 yr | 86% |
3 mo and 1 yr and 5 yr are NEGATIVE (-0.00 yr, -0.04 yr, -0.20 yr) — a deliberate hedge at that point on the curve, so they are not part of the band above.
| 3 mo | 0.01 yr | 0% |
| 1 yr | 0.19 yr | 1% |
| 5 yr | 0.81 yr | 5% |
| 10 yr | 5.48 yr | 35% |
| 30 yr | 9.14 yr | 58% |
The two bands measure the same positions against different shocks and do not add — a Treasury carries rate duration and no spread duration, a floating-rate credit the reverse. Rate tenors are also summed across every currency the fund discloses.
Show the numbers
| Tenor | Rate yrs | IG yrs | HY yrs | IG $/bp | HY $/bp |
|---|---|---|---|---|---|
| 3 mo | -0.00 | +0.01 | +0.00 | $11.8k | $0 |
| 1 yr | -0.04 | +0.19 | +0.00 | $247.6k | $0 |
| 5 yr | -0.20 | +0.81 | +0.00 | $1.05m | $0 |
| 10 yr | +2.30 | +5.48 | +0.00 | $7.14m | $0 |
| 30 yr | +13.81 | +9.14 | +0.00 | $11.89m | $0 |
Dollar change per 1bp of spread movement, as filed and sign-anchored. A blank cell was not filed; a zero was.
Holdings
By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Value | Shares |
|---|---|---|---|---|
| — | UNITED STATES TREASURY BOND4.75% · due 2055-08-15 | 5.15% | $669.66M | — |
| — | UNITED STATES TREASURY BOND4.63% · due 2055-11-15 | 4.46% | $580.03M | — |
| — | UNITED STATES TREASURY BOND4.75% · due 2053-11-15 | 4.19% | $544.73M | — |
| — | UNITED STATES TREASURY BOND4.63% · due 2055-02-15 | 4.02% | $522.80M | — |
| — | UNITED STATES TREASURY BOND4.75% · due 2055-05-15 | 4.00% | $520.13M | — |
| — | UNITED STATES TREASURY BOND4.25% · due 2054-08-15 | 3.87% | $503.62M | — |
| — | UNITED STATES TREASURY BOND4.13% · due 2053-08-15 | 3.82% | $497.57M | — |
| — | UNITED STATES TREASURY BOND4.63% · due 2054-05-15 | 3.56% | $463.86M | — |
| — | UNITED STATES TREASURY BOND4.25% · due 2054-02-15 | 3.37% | $438.68M | — |
| — | UNITED STATES TREASURY BOND2.38% · due 2051-05-15 | 3.23% | $419.63M | — |
Top 10 positions are 39.66% of net assets, top 25 77.65%, across 2 issuers.
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