{
  "page": "compare",
  "query": {
    "a": "IBMT",
    "b": "IBMR"
  },
  "retrieved_at": "2026-07-07T19:38:12+00:00",
  "disclaimer": "Informational only — not investment advice. FundWatcher presents publicly available data and makes no recommendation to buy or sell any security. Verify all figures against the source filing before relying on them.",
  "attribution": "Data sourced from U.S. SEC EDGAR filings (Forms N-PORT, N-CEN, and prospectus Risk/Return summaries). FundWatcher is not affiliated with the SEC.",
  "terms": {
    "notice": "Use of this data is subject to the FundWatcher Terms of Service. Information may be used only for personal, non-commercial research and may not be redistributed.",
    "url": "https://fundwatcher.app/terms/"
  },
  "fund_a": {
    "name": "iShares iBonds Dec 2031 Term Muni Bond ETF",
    "ticker": "IBMT",
    "slug": "IBMT",
    "series_id": "S000090637",
    "html_url": "https://fundwatcher.app/funds/IBMT/"
  },
  "fund_b": {
    "name": "iShares iBonds Dec 2029 Term Muni Bond ETF",
    "ticker": "IBMR",
    "slug": "IBMR",
    "series_id": "S000080345",
    "html_url": "https://fundwatcher.app/funds/IBMR/"
  },
  "overlap": {
    "coverage_a_by_b": "0.02817202038736875923227400280",
    "coverage_b_by_a": "0.02817202038736875923227400280",
    "shared_count": 28,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "BLKR-LI MUNI-INS",
        "value": "1286078.66",
        "weight": "0.01674937",
        "shared": true
      },
      {
        "name": "County of Montgomery, Series 2023A",
        "value": "585048.52",
        "weight": "0.00761944",
        "shared": false
      },
      {
        "name": "Metropolitan Nashville Airport Authority (The), Series 2026C",
        "value": "566097.15",
        "weight": "0.00737262",
        "shared": false
      },
      {
        "name": "Long Island Power Authority, Series 2021A",
        "value": "423406.41",
        "weight": "0.00551428",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST PUBLIC",
        "value": "423299.93",
        "weight": "0.00551289",
        "shared": false
      },
      {
        "name": "State of Minnesota, Series 2021A",
        "value": "414755.05",
        "weight": "0.00540160",
        "shared": false
      },
      {
        "name": "Metropolitan Water Reclamation District of Greater Chicago, Series 2021C",
        "value": "398754.79",
        "weight": "0.00519322",
        "shared": false
      },
      {
        "name": "Yosemite Community College District, Series 2010D",
        "value": "378549.70",
        "weight": "0.00493008",
        "shared": false
      },
      {
        "name": "University of California, Series 2021BH",
        "value": "371829.71",
        "weight": "0.00484256",
        "shared": false
      },
      {
        "name": "N TX HWY CABS-REF-1ST",
        "value": "354175.98",
        "weight": "0.00461265",
        "shared": false
      },
      {
        "name": "Honolulu (City & County of), HI (Honolulu Rail Transit), Series 2021, GO Bonds",
        "value": "349887.73",
        "weight": "0.00455680",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "340738.98",
        "weight": "0.00443765",
        "shared": false
      },
      {
        "name": "ID HFA 5% 7/15/2031",
        "value": "326176.57",
        "weight": "0.00424799",
        "shared": false
      },
      {
        "name": "State of New Jersey, Series 2020A",
        "value": "324786.69",
        "weight": "0.00422989",
        "shared": false
      },
      {
        "name": "State of Louisiana, Series 2021A",
        "value": "301873.64",
        "weight": "0.00393148",
        "shared": false
      },
      {
        "name": "New York (City of), NY, Series 2021-1, GO Bonds",
        "value": "298103.61",
        "weight": "0.00388238",
        "shared": false
      },
      {
        "name": "State of Illinois, Series 2024B",
        "value": "294606.44",
        "weight": "0.00383684",
        "shared": false
      },
      {
        "name": "City of Chicago Wastewater Transmission, Series 2024B",
        "value": "282985.59",
        "weight": "0.00368549",
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      },
      {
        "name": "Los Angeles Department of Water & Power, Series 2022A",
        "value": "282416.23",
        "weight": "0.00367808",
        "shared": false
      },
      {
        "name": "YONKERS NY 5% 2/1/2031",
        "value": "281534.90",
        "weight": "0.00366660",
        "shared": false
      },
      {
        "name": "Omaha Public Power District Nebraska City Station Unit 2, Series 2026A",
        "value": "280323.85",
        "weight": "0.00365083",
        "shared": false
      },
      {
        "name": "State of Michigan Trunk Line, Series 2021A",
        "value": "279831.68",
        "weight": "0.00364442",
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      },
      {
        "name": "GARLAND TX ELEC UTILITY SYS REVENUE",
        "value": "279730.85",
        "weight": "0.00364310",
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      },
      {
        "name": "State of Florida, Series 2024B",
        "value": "272614.01",
        "weight": "0.00355042",
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      },
      {
        "name": "New York (State of) Dormitory Authority, Series 2021 A, Ref. RB",
        "value": "268191.07",
        "weight": "0.00349281",
        "shared": false
      },
      {
        "name": "State of Louisiana, Series 2023",
        "value": "265761.01",
        "weight": "0.00346116",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA 5.0% 10-01-31",
        "value": "265246.53",
        "weight": "0.00345446",
        "shared": false
      },
      {
        "name": "Salt River Project Agricultural Improvement & Power District, Series 2022 A, Ref. RB",
        "value": "264753.49",
        "weight": "0.00344804",
        "shared": false
      },
      {
        "name": "North Dakota Public Finance Authority, Series 2024A",
        "value": "257090.74",
        "weight": "0.00334825",
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      },
      {
        "name": "State of Maryland, Series 2019-2A",
        "value": "250296.03",
        "weight": "0.00325976",
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      {
        "name": "University of Utah (The), Series 2022B",
        "value": "249069.79",
        "weight": "0.00324378",
        "shared": false
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      {
        "name": "New Jersey Transportation Trust Fund Authority, Series 2022AA",
        "value": "248056.62",
        "weight": "0.00323059",
        "shared": false
      },
      {
        "name": "County of Frederick, Series 2025A",
        "value": "243723.20",
        "weight": "0.00317415",
        "shared": false
      },
      {
        "name": "WASHINGTON ST-R-2025B",
        "value": "238782.56",
        "weight": "0.00310981",
        "shared": false
      },
      {
        "name": "State of North Carolina, Series 2021",
        "value": "234491.69",
        "weight": "0.00305393",
        "shared": false
      },
      {
        "name": "State of Maryland, Series 2021A",
        "value": "234472.46",
        "weight": "0.00305368",
        "shared": false
      },
      {
        "name": "NYC NY 5% 8/1/2031",
        "value": "231918.65",
        "weight": "0.00302042",
        "shared": false
      },
      {
        "name": "Indianapolis Local Public Improvement Bond Bank, Series 2021 A, Ref. RB",
        "value": "231319.99",
        "weight": "0.00301262",
        "shared": false
      },
      {
        "name": "City of Mobile, Series 2025B",
        "value": "230326.27",
        "weight": "0.00299968",
        "shared": false
      },
      {
        "name": "University of Houston, Series 2022 A, Ref. RB",
        "value": "230253.79",
        "weight": "0.00299873",
        "shared": false
      },
      {
        "name": "LONG ISLAND PWR AUTH",
        "value": "230197.90",
        "weight": "0.00299801",
        "shared": false
      },
      {
        "name": "Iowa Finance Authority, Series 2021A",
        "value": "228051.56",
        "weight": "0.00297005",
        "shared": false
      },
      {
        "name": "County of King, Series 2024B",
        "value": "226866.90",
        "weight": "0.00295462",
        "shared": false
      },
      {
        "name": "Orlando Utilities Commission, Series 2021A",
        "value": "225114.54",
        "weight": "0.00293180",
        "shared": false
      },
      {
        "name": "Greenville Independent School District, Series 2026",
        "value": "224435.96",
        "weight": "0.00292296",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "224205.30",
        "weight": "0.00291996",
        "shared": false
      },
      {
        "name": "NYC TFA FUTURE TAX",
        "value": "222538.58",
        "weight": "0.00289825",
        "shared": false
      },
      {
        "name": "Maricopa County Union High School District No. 210-Phoenix, Series 2024A",
        "value": "221089.11",
        "weight": "0.00287938",
        "shared": false
      },
      {
        "name": "State of New Mexico Severance Tax Permanent Fund, Series 2021A",
        "value": "215110.36",
        "weight": "0.00280151",
        "shared": false
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      {
        "name": "Auburn University, Series 2025, RB",
        "value": "214698.63",
        "weight": "0.00279615",
        "shared": false
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    ],
    "b_top": [
      {
        "name": "BLKR-LI MUNI-INS",
        "value": "5607194.61",
        "weight": "0.01348640",
        "shared": true
      },
      {
        "name": "Massachusetts Clean Water Trust (The), Series 27",
        "value": "2706323.00",
        "weight": "0.00650924",
        "shared": false
      },
      {
        "name": "State of New Jersey, Series 2020A",
        "value": "2360146.47",
        "weight": "0.00567661",
        "shared": false
      },
      {
        "name": "State of California, Series 2019",
        "value": "2090655.53",
        "weight": "0.00502844",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST INFRASTRUCTURE & REGD B/E 3.25000000",
        "value": "1937126.11",
        "weight": "0.00465917",
        "shared": false
      },
      {
        "name": "NEW YORK ST DORM AUTH ST PERSONAL INCOME TAX REVENUE",
        "value": "1898345.23",
        "weight": "0.00456589",
        "shared": false
      },
      {
        "name": "Los Angeles (County of), CA Metropolitan Transportation Authority, Series 2017 A, RB",
        "value": "1836024.96",
        "weight": "0.00441600",
        "shared": false
      },
      {
        "name": "Palm Beach County School District, Series 2018 C, Ref. COP",
        "value": "1583049.06",
        "weight": "0.00380754",
        "shared": false
      },
      {
        "name": "County of Clark Department of Aviation, Series 2024A",
        "value": "1532977.66",
        "weight": "0.00368711",
        "shared": false
      },
      {
        "name": "Contra Costa Transportation Authority Sales Tax, Series 2018B",
        "value": "1387762.26",
        "weight": "0.00333784",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA 5.0% 09-01-29",
        "value": "1377745.00",
        "weight": "0.00331375",
        "shared": false
      },
      {
        "name": "Escondido Union High School District, Series A",
        "value": "1358570.44",
        "weight": "0.00326763",
        "shared": false
      },
      {
        "name": "PRIV CLGS & UNIV-A",
        "value": "1254413.10",
        "weight": "0.00301711",
        "shared": false
      },
      {
        "name": "State of Connecticut, Series 2025, GO Bonds",
        "value": "1238037.75",
        "weight": "0.00297772",
        "shared": false
      },
      {
        "name": "School Board of Miami-Dade County (The), Series 2025, COP",
        "value": "1226293.95",
        "weight": "0.00294948",
        "shared": false
      },
      {
        "name": "MORRIS CNTY NJ",
        "value": "1201181.13",
        "weight": "0.00288908",
        "shared": false
      },
      {
        "name": "MET TRANSPRTN AUTH NY REVENUE",
        "value": "1190662.40",
        "weight": "0.00286378",
        "shared": false
      },
      {
        "name": "OREGON CITY SCHOOL DISTRICT NO CLASCD 06/29 ZEROCPNOID 0",
        "value": "1122337.41",
        "weight": "0.00269944",
        "shared": false
      },
      {
        "name": "Lower Colorado River Authority, Series 2023A",
        "value": "1089731.95",
        "weight": "0.00262102",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST",
        "value": "1083462.50",
        "weight": "0.00260594",
        "shared": false
      },
      {
        "name": "OHIO WTR DEV AUTH-A",
        "value": "1077967.08",
        "weight": "0.00259272",
        "shared": false
      },
      {
        "name": "School District of Broward County, Series 2019B",
        "value": "1069813.60",
        "weight": "0.00257311",
        "shared": false
      },
      {
        "name": "ILLINOIS ST TOLL HIGH",
        "value": "1065454.34",
        "weight": "0.00256263",
        "shared": false
      },
      {
        "name": "City of Minneapolis, Series 2021",
        "value": "1062917.10",
        "weight": "0.00255652",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "1051380.96",
        "weight": "0.00252878",
        "shared": false
      },
      {
        "name": "AMERICAN MUN OH 5% 2/15/2029",
        "value": "1050294.91",
        "weight": "0.00252617",
        "shared": false
      },
      {
        "name": "City of San Antonio, Series 2017",
        "value": "1037566.60",
        "weight": "0.00249555",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA 4.0% 09-01-29",
        "value": "1016031.38",
        "weight": "0.00244375",
        "shared": false
      },
      {
        "name": "PRIV CLGS & UNIVS AUT",
        "value": "1003530.48",
        "weight": "0.00241369",
        "shared": false
      },
      {
        "name": "NJ TRANSPRTN TRUST-A",
        "value": "998151.15",
        "weight": "0.00240075",
        "shared": false
      },
      {
        "name": "Lansing School District, Series 2019II",
        "value": "984710.56",
        "weight": "0.00236842",
        "shared": false
      },
      {
        "name": "BEVERLY HILLS USD CAB",
        "value": "978198.53",
        "weight": "0.00235276",
        "shared": false
      },
      {
        "name": "DALLAS TX AREA RAPID",
        "value": "973869.40",
        "weight": "0.00234235",
        "shared": false
      },
      {
        "name": "ID HSG & FIN ASSN-A",
        "value": "971649.14",
        "weight": "0.00233701",
        "shared": false
      },
      {
        "name": "ALABAMA ST PUBLIC SCH & CLG AUTH",
        "value": "970880.84",
        "weight": "0.00233516",
        "shared": false
      },
      {
        "name": "PHOENIX SKY HARBOR INTERNATIONAL AIRPORT CUSTOMER FACILITY CHARGES REVENUE 5.0% 07-01-33",
        "value": "966677.94",
        "weight": "0.00232505",
        "shared": false
      },
      {
        "name": "NEW YORK NY",
        "value": "957766.80",
        "weight": "0.00230362",
        "shared": false
      },
      {
        "name": "Rhode Island Health & Educational Building Corp., Series 2019A",
        "value": "950870.85",
        "weight": "0.00228703",
        "shared": false
      },
      {
        "name": "Maricopa County Union High School District No. 210-Phoenix, Series 2018",
        "value": "938757.68",
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      },
      {
        "name": "JEA-THREE A-REV-REF",
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        "weight": "0.00224574",
        "shared": false
      },
      {
        "name": "Triborough Bridge & Tunnel Authority, Series 2013A",
        "value": "924040.58",
        "weight": "0.00222250",
        "shared": false
      },
      {
        "name": "Ukiah Unified School District, Series 2006",
        "value": "913525.50",
        "weight": "0.00219721",
        "shared": false
      },
      {
        "name": "Canyons School District, Series 2018",
        "value": "908057.57",
        "weight": "0.00218406",
        "shared": false
      },
      {
        "name": "Kansas Development Finance Authority, Series 2019SRF",
        "value": "902945.38",
        "weight": "0.00217176",
        "shared": false
      },
      {
        "name": "State of Illinois, Series 2023B",
        "value": "901941.33",
        "weight": "0.00216935",
        "shared": false
      },
      {
        "name": "Trinity River Authority, Series 2018",
        "value": "895858.91",
        "weight": "0.00215472",
        "shared": false
      },
      {
        "name": "Utica Community Schools, Series 2019",
        "value": "895433.05",
        "weight": "0.00215369",
        "shared": false
      },
      {
        "name": "Multnomah County School District No. 1, Series 2020, GO Bonds",
        "value": "882430.36",
        "weight": "0.00212242",
        "shared": false
      },
      {
        "name": "State of North Carolina, Series 2019",
        "value": "878035.44",
        "weight": "0.00211185",
        "shared": false
      },
      {
        "name": "KENTUCKY ST PROPERTY & BLDGS COMMISSION REVENUES",
        "value": "876968.32",
        "weight": "0.00210928",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-007287",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126007287/0002071691-26-007287-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0002071691-26-007318",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126007318/0002071691-26-007318-index.htm"
    }
  ]
}