{
  "page": "compare",
  "query": {
    "a": "IBMS",
    "b": "IBMT"
  },
  "retrieved_at": "2026-07-07T17:05:47+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 2031 Term Muni Bond ETF",
    "ticker": "IBMT",
    "slug": "IBMT",
    "series_id": "S000090637",
    "html_url": "https://fundwatcher.app/funds/IBMT/"
  },
  "overlap": {
    "coverage_a_by_b": "0.02794259412795665826786748508",
    "coverage_b_by_a": "0.02794259412795665826786748507",
    "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",
        "shared": true
      },
      {
        "name": "UNIV OF CALIFORNIA CA REVENUES REGD N/C B/E 5.00000000",
        "value": "1692671.09",
        "weight": "0.00662920",
        "shared": false
      },
      {
        "name": "CT HLTH & EDUCTNL-B-1",
        "value": "1607316.45",
        "weight": "0.00629492",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "1437961.95",
        "weight": "0.00563166",
        "shared": false
      },
      {
        "name": "NEW YORK NY",
        "value": "1270271.11",
        "weight": "0.00497491",
        "shared": false
      },
      {
        "name": "MORRIS CNTY NJ",
        "value": "1249228.37",
        "weight": "0.00489250",
        "shared": false
      },
      {
        "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": false
      },
      {
        "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",
        "shared": false
      },
      {
        "name": "PRV COL and UNV GA 5% 9/1/2030",
        "value": "718252.01",
        "weight": "0.00281297",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST CLEAN WTR TRUST",
        "value": "709569.28",
        "weight": "0.00277897",
        "shared": false
      },
      {
        "name": "Honolulu (City & County of), HI (Honolulu Rail Transit), Series 2021, GO Bonds",
        "value": "703031.36",
        "weight": "0.00275336",
        "shared": false
      },
      {
        "name": "NYC TRANS FIN AUTH",
        "value": "692353.48",
        "weight": "0.00271154",
        "shared": false
      },
      {
        "name": "State of Maryland, Series 2020A-2",
        "value": "690389.28",
        "weight": "0.00270385",
        "shared": true
      },
      {
        "name": "CONROE TX INDEP SCH DIST",
        "value": "690038.25",
        "weight": "0.00270248",
        "shared": false
      },
      {
        "name": "BEVERLY HILLS USD CAB",
        "value": "688610.24",
        "weight": "0.00269688",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST",
        "value": "680592.81",
        "weight": "0.00266548",
        "shared": false
      },
      {
        "name": "LOS ANGELES WTR-A-REF",
        "value": "679671.13",
        "weight": "0.00266187",
        "shared": false
      },
      {
        "name": "MET TRANSPRTN AUTH NY REVENUE",
        "value": "677057.19",
        "weight": "0.00265164",
        "shared": false
      },
      {
        "name": "IL ST TOLL HWY AUTH",
        "value": "675696.38",
        "weight": "0.00264631",
        "shared": true
      },
      {
        "name": "NEW YORK NY",
        "value": "673817.29",
        "weight": "0.00263895",
        "shared": true
      },
      {
        "name": "State of Connecticut, Series 2021A",
        "value": "658447.56",
        "weight": "0.00257875",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "641885.38",
        "weight": "0.00251389",
        "shared": false
      },
      {
        "name": "MANHATTAN BEACH CA UNIF SCH DIST",
        "value": "640964.32",
        "weight": "0.00251028",
        "shared": false
      },
      {
        "name": "State of Illinois, Series 2024B",
        "value": "640408.45",
        "weight": "0.00250811",
        "shared": false
      },
      {
        "name": "CORPUS CHRISTI TX",
        "value": "640092.73",
        "weight": "0.00250687",
        "shared": false
      },
      {
        "name": "IL ST TOLL HWY AUTH",
        "value": "611065.93",
        "weight": "0.00239319",
        "shared": false
      },
      {
        "name": "STATE OF ILLINOIS",
        "value": "609242.87",
        "weight": "0.00238605",
        "shared": false
      },
      {
        "name": "CENTRL FL EXPRESSWAY AUTH SR LIEN REVENUE",
        "value": "595250.95",
        "weight": "0.00233125",
        "shared": false
      },
      {
        "name": "DEL VALLE TX INDEP SCH DIST",
        "value": "592831.36",
        "weight": "0.00232177",
        "shared": false
      },
      {
        "name": "Hillsborough County School Board, Series 2018",
        "value": "590731.68",
        "weight": "0.00231355",
        "shared": false
      },
      {
        "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
      },
      {
        "name": "MASSACHUSETTS ST-REF",
        "value": "576305.96",
        "weight": "0.00225705",
        "shared": false
      },
      {
        "name": "NY DORM AUTH-C-REF",
        "value": "575542.29",
        "weight": "0.00225406",
        "shared": false
      },
      {
        "name": "PALM BEACH SCH-A-COPS",
        "value": "570816.64",
        "weight": "0.00223555",
        "shared": false
      },
      {
        "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
      }
    ],
    "b_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",
        "shared": false
      },
      {
        "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",
        "shared": false
      },
      {
        "name": "GARLAND TX ELEC UTILITY SYS REVENUE",
        "value": "279730.85",
        "weight": "0.00364310",
        "shared": false
      },
      {
        "name": "State of Florida, Series 2024B",
        "value": "272614.01",
        "weight": "0.00355042",
        "shared": false
      },
      {
        "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",
        "shared": false
      },
      {
        "name": "State of Maryland, Series 2019-2A",
        "value": "250296.03",
        "weight": "0.00325976",
        "shared": false
      },
      {
        "name": "University of Utah (The), Series 2022B",
        "value": "249069.79",
        "weight": "0.00324378",
        "shared": false
      },
      {
        "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
      },
      {
        "name": "Auburn University, Series 2025, RB",
        "value": "214698.63",
        "weight": "0.00279615",
        "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": "0002071691-26-007287",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126007287/0002071691-26-007287-index.htm"
    }
  ]
}