iShares National Muni Bond

    MUB ·NYSEARCA
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    The iShares National Muni Bond ETF (the “Fund”) seeks to track the investment results of an index composed of investment-grade U.S. municipal bonds.

    Investment Strategy

    The Fund seeks to track the investment results of the ICE® AMT-Free US National Municipal Index (the “Underlying Index”), which measures the performance of U.S. dollar denominated investment grade tax-exempt debt publicly issued in the U.S. domestic market by U.S. states and their political subdivisions. As of February 28, 2025, there were 24,426 issues in the Underlying Index. As of February 28, 2025, a significant portion of the Underlying Index is represented by municipal bonds. The components of the Underlying Index are likely to change over time.

    Fees & Expenses

    Net Expense Ratio0.05%
    Management Fee0.05%
    Portfolio Turnover17%

    Reported Performance

    Average annual returns as reported in the fund's most recent prospectus. Past performance does not guarantee future results.

    1-Year Return1.11%
    5-Year Avg Annual1.00%
    10-Year Avg Annual2.06%

    Holdings

    6264 positions as of 2026-02-28. Total net assets: $43,226,341,765. Expense ratio: 0.05%. 99.4% of value is in positions not matched to an entity we track (typically bonds, derivatives, or foreign securities). Source: SEC N-PORT-P filing.

    Top 10 holdings

    Name Ticker Weight Value
    BlackRock Liquidity MuniCash Funds: Institutional Shares MCSXX 0.56% $242,983,298
    Board of Regents of the University of Texas System, Series 2025B 0.21% $90,014,039
    Connecticut State Health & Educational Facilities Authority, Series 2017C-4 0.20% $85,000,000
    City of Atlanta Water & Wastewater, Series 2015 0.19% $82,282,743
    Northwest Independent School District, Series 2025 0.16% $69,469,566
    New York State Thruway Authority, Series 2022A 0.16% $69,237,874
    Houston Higher Education Finance Corp., Series 2024 0.15% $64,910,233
    New York State Dormitory Authority, Series 2019D 0.14% $60,673,678
    Ohio State University (The), Series 2026A 0.14% $59,853,495
    State of California 0.13% $57,721,625

    Country

    CountryWeight
    United States 99.5%
    Total 99.5%

    Region

    RegionWeight
    Americas 99.5%
    Total 99.5%

    Market classification

    MarketWeight
    Developed 99.5%
    Total 99.5%

    Asset class

    ClassWeight
    Debt 97.0%
    Short-term investment 2.5%
    Total 99.5%

    Issuer type

    TypeWeight
    Municipal 98.9%
    Registered fund 0.6%
    Total 99.5%

    Maturity

    MaturityWeight
    Under 1 year 3.1%
    1-3 years 6.8%
    3-5 years 7.7%
    5-10 years 21.2%
    Over 10 years 60.1%
    No expiry 0.6%
    Total 99.5%

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    Held by

    holders ( registered funds via N-PORT, institutional investors via 13F). Showing top by dollar value.

    Holder Type ETF MF Position ($) % of holder Δ % of holder Holder AUM