Fidelity Short-Term Bond Index Fund (FNSOX) is a mutual fund that seeks a high level of current income by investing at least 80% of its assets in securities included in the Bloomberg U.S. 1-5 Year Government/Credit Bond Index; this market value-weighted index comprises fixed-rate, investment-grade debt securities with maturities between one and five years from U.S. Treasury, U.S. government-related, and U.S. corporate issuers. The fund maintains a dollar-weighted average maturity generally expected to be three years or less, in line with the index, and invests in securities from both domestic and foreign issuers. It operates within the short-term bond segment of the fixed-income industry, targeting investors seeking low-cost exposure to investment-grade bonds with moderate interest rate sensitivity and high credit quality.
Launched on October 18, 2017, the fund is managed by Fidelity Investments, with headquarters in Boston, Massachusetts; it features an ultralow expense ratio of 0.03%, positioning it as a cost-efficient passive investment vehicle. Geographically, its portfolio focuses primarily on U.S.-based securities while including select foreign issuers to replicate the benchmark. The fund serves institutional and retail investors through platforms like Fidelity's brokerage and retirement accounts.
Recent performance reflects resilience amid interest rate fluctuations, with year-to-date returns of 2.44% and 5.99% over the past 12 months as of mid-2025, alongside a trailing 12-month dividend yield of 3.06%. No major acquisitions, partnerships, or strategic shifts have been announced for the fund in the last 1-2 years; it continues to adhere closely to its index-tracking mandate without notable product launches or reorganizations.