{
  "page": "compare",
  "query": {
    "a": "IBMS",
    "b": "IBMR"
  },
  "retrieved_at": "2026-07-07T17:06:58+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 2030 Term Muni Bond ETF",
    "ticker": "IBMS",
    "slug": "IBMS",
    "series_id": "S000085095",
    "html_url": "https://fundwatcher.app/funds/IBMS/"
  },
  "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": "0.02432171812607678246093333139",
    "coverage_b_by_a": "0.02432171812607678246093333139",
    "shared_count": 37,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "BLKR-LI MUNI-INS",
        "value": "1725764.27",
        "weight": "0.00675881",
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      },
      {
        "name": "UNIV OF CALIFORNIA CA REVENUES REGD N/C B/E 5.00000000",
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        "weight": "0.00662920",
        "shared": false
      },
      {
        "name": "CT HLTH & EDUCTNL-B-1",
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      },
      {
        "name": "State of California",
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      {
        "name": "NEW YORK NY",
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      {
        "name": "MORRIS CNTY NJ",
        "value": "1249228.37",
        "weight": "0.00489250",
        "shared": true
      },
      {
        "name": "State of Hawaii Airports System Revenue",
        "value": "1197920.90",
        "weight": "0.00469156",
        "shared": false
      },
      {
        "name": "State of New Jersey, Series 2020A",
        "value": "1135106.72",
        "weight": "0.00444555",
        "shared": false
      },
      {
        "name": "ALABAMA ST PUBLIC SCH & CLG AUTH",
        "value": "1132943.58",
        "weight": "0.00443708",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "926349.11",
        "weight": "0.00362797",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST-REF",
        "value": "872738.89",
        "weight": "0.00341801",
        "shared": false
      },
      {
        "name": "LOS ANGELES-E-REF",
        "value": "777713.93",
        "weight": "0.00304585",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "769785.20",
        "weight": "0.00301480",
        "shared": false
      },
      {
        "name": "State of California, Series 2019",
        "value": "766757.57",
        "weight": "0.00300294",
        "shared": true
      },
      {
        "name": "Duval County Public Schools, Series 2022A",
        "value": "741594.93",
        "weight": "0.00290439",
        "shared": false
      },
      {
        "name": "Rancho Santiago Community College District",
        "value": "727154.60",
        "weight": "0.00284784",
        "shared": false
      },
      {
        "name": "Metropolitan Transit Authority of Harris County Sales & Use Tax",
        "value": "723279.31",
        "weight": "0.00283266",
        "shared": false
      },
      {
        "name": "State of California, Series 2018, GO Bonds",
        "value": "723197.63",
        "weight": "0.00283234",
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      },
      {
        "name": "PRV COL and UNV GA 5% 9/1/2030",
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      },
      {
        "name": "MASSACHUSETTS ST CLEAN WTR TRUST",
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        "weight": "0.00277897",
        "shared": false
      },
      {
        "name": "Honolulu (City & County of), HI (Honolulu Rail Transit), Series 2021, GO Bonds",
        "value": "703031.36",
        "weight": "0.00275336",
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      },
      {
        "name": "NYC TRANS FIN AUTH",
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        "weight": "0.00271154",
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      {
        "name": "State of Maryland, Series 2020A-2",
        "value": "690389.28",
        "weight": "0.00270385",
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      {
        "name": "CONROE TX INDEP SCH DIST",
        "value": "690038.25",
        "weight": "0.00270248",
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      },
      {
        "name": "BEVERLY HILLS USD CAB",
        "value": "688610.24",
        "weight": "0.00269688",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST",
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        "weight": "0.00266548",
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      {
        "name": "LOS ANGELES WTR-A-REF",
        "value": "679671.13",
        "weight": "0.00266187",
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      {
        "name": "MET TRANSPRTN AUTH NY REVENUE",
        "value": "677057.19",
        "weight": "0.00265164",
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      },
      {
        "name": "IL ST TOLL HWY AUTH",
        "value": "675696.38",
        "weight": "0.00264631",
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      {
        "name": "NEW YORK NY",
        "value": "673817.29",
        "weight": "0.00263895",
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      {
        "name": "State of Connecticut, Series 2021A",
        "value": "658447.56",
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      {
        "name": "State of California",
        "value": "641885.38",
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      {
        "name": "MANHATTAN BEACH CA UNIF SCH DIST",
        "value": "640964.32",
        "weight": "0.00251028",
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      },
      {
        "name": "State of Illinois, Series 2024B",
        "value": "640408.45",
        "weight": "0.00250811",
        "shared": false
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      {
        "name": "CORPUS CHRISTI TX",
        "value": "640092.73",
        "weight": "0.00250687",
        "shared": true
      },
      {
        "name": "IL ST TOLL HWY AUTH",
        "value": "611065.93",
        "weight": "0.00239319",
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      },
      {
        "name": "STATE OF ILLINOIS",
        "value": "609242.87",
        "weight": "0.00238605",
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      {
        "name": "CENTRL FL EXPRESSWAY AUTH SR LIEN REVENUE",
        "value": "595250.95",
        "weight": "0.00233125",
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      },
      {
        "name": "DEL VALLE TX INDEP SCH DIST",
        "value": "592831.36",
        "weight": "0.00232177",
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      },
      {
        "name": "Hillsborough County School Board, Series 2018",
        "value": "590731.68",
        "weight": "0.00231355",
        "shared": false
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      {
        "name": "UTAH ST BLDG OWNERSHIP AUTH LEASE REVENUE",
        "value": "581475.77",
        "weight": "0.00227730",
        "shared": false
      },
      {
        "name": "NEW YORK ST DORM AUTH REVENUES NON ST SUPPORTED DEBT",
        "value": "581005.82",
        "weight": "0.00227546",
        "shared": false
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      {
        "name": "MASSACHUSETTS ST-REF",
        "value": "576305.96",
        "weight": "0.00225705",
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      {
        "name": "NY DORM AUTH-C-REF",
        "value": "575542.29",
        "weight": "0.00225406",
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      {
        "name": "PALM BEACH SCH-A-COPS",
        "value": "570816.64",
        "weight": "0.00223555",
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      },
      {
        "name": "NEW YORK ST DORM AUTH REVENUES NON ST SUPPORTED DEBT",
        "value": "570687.77",
        "weight": "0.00223505",
        "shared": false
      },
      {
        "name": "MA ST-REF-A",
        "value": "560987.95",
        "weight": "0.00219706",
        "shared": false
      },
      {
        "name": "E-470 Public Highway Authority, Series B",
        "value": "558340.84",
        "weight": "0.00218669",
        "shared": false
      },
      {
        "name": "MET NASHVILLE TN ARPT AUTH ARPT REVENUE",
        "value": "556308.00",
        "weight": "0.00217873",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST SCH BLDG AUTH SALES TAX REVENUE",
        "value": "555539.90",
        "weight": "0.00217572",
        "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": true
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      {
        "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
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      {
        "name": "Palm Beach County School District, Series 2018 C, Ref. COP",
        "value": "1583049.06",
        "weight": "0.00380754",
        "shared": false
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      {
        "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": true
      },
      {
        "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
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      {
        "name": "State of California",
        "value": "1051380.96",
        "weight": "0.00252878",
        "shared": false
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      {
        "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
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      {
        "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",
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      },
      {
        "name": "NJ TRANSPRTN TRUST-A",
        "value": "998151.15",
        "weight": "0.00240075",
        "shared": false
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      {
        "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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        "shared": false
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      {
        "name": "JEA-THREE A-REV-REF",
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        "shared": false
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      {
        "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",
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      },
      {
        "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",
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      },
      {
        "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": "0001410368-26-031746",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000141036826031746/0001410368-26-031746-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"
    }
  ]
}