Fidelity Flex U.S. Bond Index Fund
FIBUX
NASDAQ- -
USD
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Capital Structure
FRC
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in mil. unless spec.Working Capital
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in mil. unless spec.Growth Rates
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in mil. unless spec.Quarterly Revenue
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in mil. unless spec.Quarterly Earnings Per Share
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in mil. unless spec.- Sector
- Financial Services
- Industry
- Asset Management - Bonds
- Address
- 245 Summer Street Boston MA United States of America 02210
- IPO Date
- Mar 9, 2017
- CIK
- 0000035315
- Website
- institutional.fidelity.com
- Similar Companies
- Business
- Fidelity Flex U.S. Bond Index Fund (FIBUX) is an open-ended mutual fund that seeks to provide investment results corresponding to the aggregate price and interest performance of the debt securities in the Bloomberg U.S. Aggregate Bond Index. The fund normally invests at least 80% of its assets in bonds included in the index, employing statistical sampling techniques based on duration, maturity, interest rate sensitivity, security structure, and credit quality to replicate index returns using a representative smaller number of securities; it also invests in Fidelity central funds for liquidity and efficiency. Its portfolio emphasizes high credit quality with moderate interest-rate sensitivity, primarily comprising U.S. bonds (91.52%), non-U.S. bonds (6.33%), and cash (2.15%), with top sectors including government securities (45.15%), corporate bonds (25.60%), and agency mortgage-backed securities (24.24%); top holdings feature Fidelity Cash Central Fund (1.80%), various United States Treasury Notes and Bonds (collectively around 3.74%), and nearly 5,000 total holdings representing broad diversification. Launched on March 9, 2017, and domiciled in the United States, the fund is managed by Fidelity Investments, with Brandon Bettencourt serving since inception and Mark Lande joining as co-manager on October 30, 2024. Headquartered in Boston, Massachusetts, as part of Fidelity's institutional offerings, it targets institutional and advisor clients with a minimum initial investment of $0, zero net expense ratio, daily pricing, and monthly dividend distributions yielding approximately 3.85%. Assets under management stand at approximately $3.05 billion, positioning it within the intermediate core bond category. Recent developments include the addition of Mark Lande as co-portfolio manager effective October 30, 2024, enhancing the fund's management team amid Fidelity's broader fixed-income strategic adjustments; no major mergers, acquisitions, or policy shifts specific to FIBUX have been announced in the last 1-2 years, though Fidelity implemented changes to related short-term bond funds in 2023-2024, such as expanded flexibility in credit quality and duration alignments. The fund maintains operations focused on U.S. investors through Fidelity's institutional platform, with no noted partnerships, new share classes, or significant expansions as of late 2025.