Fidelity Series Investment Grade Bond Fund
Fidelity Salem Street Trust · Series S000023604 · 1 share classes
data updated 2026-09-08
Fund profile
As filed in the prospectus · 2025 Q4
Fidelity Series Investment Grade Bond Fund seeks a high level of current income.
The fund invests at least 80% of assets in investment-grade debt securities across all types—corporate bonds, government securities, mortgage-backed securities, and related instruments—managed to maintain similar overall interest rate risk to the Bloomberg U.S. Aggregate Bond Index, with allocations adjusted across sectors and maturities based on credit quality, valuation, and trading opportunities. The fund may also invest in lower-quality debt securities and use derivatives and leverage to adjust risk exposure. Because security selection depends on the adviser's analysis rather than index replication, the fund's returns may diverge from the benchmark.
| Share class | Expense ratio |
|---|---|
| FSIGX | 0.00% |
Portfolio turnover 203.00% · as of 2025 Q4
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q2
| Bonds | 72.24% |
| Securitized | 31.14% |
| Cash & short-term | 1.49% |
| Derivatives | 0.06% |
| Stocks | 0.02% |
Derivatives are shown at market value, not notional exposure.
Latest quarter
What changed since the fund's previous filing
Largest new: UST NOTES ×2, GNMA II GTD PASS THRU CTF MULTIPLE ISSUER ×5, FNMA/FHLG TBA ISSUER
Largest exited: UST NOTES ×3, GNMA II GTD PASS THRU CTF MULTIPLE ISSUER ×2, FNMA/FHLG TBA ISSUER ×3
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 | 83.5% |
| Floating rate | 16.5% |
Share of the fund's debt value in each maturity band, shortest first.
| <1y | 1.4% |
| 1-3y | 4.5% |
| 3-5y | 19.2% |
| 5-10y | 31.1% |
| 10y+ | 43.8% |
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
More of this fund’s sensitivity sits in credit spreads than in interest rates — a rate rally that comes with a credit selloff works against it.
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.
| Credit spreads | 51% |
| Interest rates | 49% |
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 | +6.06 yr |
| High yield | +0.02 yr |
Share of duration at each point, shortest first. A positive figure loses value when spreads widen; a negative one offsets — a credit hedge.
| 3 mo | 0.01 yr | 0% |
| 1 yr | 0.33 yr | 6% |
| 5 yr | 1.90 yr | 33% |
| 10 yr | 1.76 yr | 30% |
| 30 yr | 1.78 yr | 31% |
| 3 mo | 0.11 yr | 2% |
| 1 yr | 0.69 yr | 11% |
| 5 yr | 2.31 yr | 38% |
| 10 yr | 1.89 yr | 31% |
| 30 yr | 1.09 yr | 18% |
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 | +0.01 | +0.10 | +0.00 | $375.3k | $12.5k |
| 1 yr | +0.33 | +0.68 | +0.01 | $2.49m | $34.3k |
| 5 yr | +1.90 | +2.30 | +0.01 | $8.36m | $32.4k |
| 10 yr | +1.76 | +1.89 | +0.00 | $6.86m | $712 |
| 30 yr | +1.78 | +1.09 | +0.00 | $3.97m | $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 |
|---|---|---|---|---|
| — | UST NOTES4.25% · due 2035-08-15 | 1.99% | $722.10M | — |
| — | UNITED STATES TREASURY BOND4.13% · due 2053-08-15 | 1.94% | $703.93M | — |
| — | UST NOTES4.00% · due 2035-11-15 | 1.91% | $696.28M | — |
| — | UST NOTES4.13% · due 2036-02-15 | 1.86% | $676.82M | — |
| — | UST NOTES3.88% · due 2033-08-15 | 1.85% | $674.00M | — |
| — | UST NOTES4.38% · due 2032-01-31 | 1.67% | $607.34M | — |
| — | UST NOTES4.38% · due 2030-11-30 | 1.61% | $585.75M | — |
| — | UST NOTES4.88% · due 2030-10-31 | 1.58% | $574.61M | — |
| — | UST NOTES3.50% · due 2033-02-15 | 1.57% | $571.16M | — |
| — | UST NOTES4.25% · due 2034-11-15 | 1.52% | $552.15M | — |
Top 10 positions are 17.50% of net assets, top 25 36.02%, across 461 issuers.
See more of this fund's book
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