{
  "page": "compare",
  "query": {
    "a": "IBMS",
    "b": "CMF"
  },
  "retrieved_at": "2026-07-07T18:22:42+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 California Muni Bond ETF",
    "ticker": "CMF",
    "slug": "CMF",
    "series_id": "S000019341",
    "html_url": "https://fundwatcher.app/funds/CMF/"
  },
  "overlap": {
    "coverage_a_by_b": "0.01805832283074085846620336732",
    "coverage_b_by_a": "0.01805832283074085846620336733",
    "shared_count": 30,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-02-28"
    },
    "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",
        "value": "1692671.09",
        "weight": "0.00662920",
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      },
      {
        "name": "CT HLTH & EDUCTNL-B-1",
        "value": "1607316.45",
        "weight": "0.00629492",
        "shared": false
      },
      {
        "name": "State of California",
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        "shared": true
      },
      {
        "name": "NEW YORK NY",
        "value": "1270271.11",
        "weight": "0.00497491",
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      },
      {
        "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",
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      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "926349.11",
        "weight": "0.00362797",
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      },
      {
        "name": "CALIFORNIA ST-REF",
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        "weight": "0.00341801",
        "shared": false
      },
      {
        "name": "LOS ANGELES-E-REF",
        "value": "777713.93",
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      },
      {
        "name": "State of California",
        "value": "769785.20",
        "weight": "0.00301480",
        "shared": true
      },
      {
        "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",
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      },
      {
        "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",
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      },
      {
        "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",
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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",
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      },
      {
        "name": "MASSACHUSETTS ST",
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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",
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        "weight": "0.00265164",
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      },
      {
        "name": "IL ST TOLL HWY AUTH",
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      },
      {
        "name": "NEW YORK NY",
        "value": "673817.29",
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      {
        "name": "State of Connecticut, Series 2021A",
        "value": "658447.56",
        "weight": "0.00257875",
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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",
        "shared": false
      },
      {
        "name": "State of Illinois, Series 2024B",
        "value": "640408.45",
        "weight": "0.00250811",
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      {
        "name": "CORPUS CHRISTI TX",
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        "weight": "0.00250687",
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      },
      {
        "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",
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      },
      {
        "name": "UTAH ST BLDG OWNERSHIP AUTH LEASE REVENUE",
        "value": "581475.77",
        "weight": "0.00227730",
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      {
        "name": "NEW YORK ST DORM AUTH REVENUES NON ST SUPPORTED DEBT",
        "value": "581005.82",
        "weight": "0.00227546",
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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",
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        "weight": "0.00223555",
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      {
        "name": "NEW YORK ST DORM AUTH REVENUES NON ST SUPPORTED DEBT",
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        "weight": "0.00223505",
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      },
      {
        "name": "MA ST-REF-A",
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        "weight": "0.00219706",
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      },
      {
        "name": "E-470 Public Highway Authority, Series B",
        "value": "558340.84",
        "weight": "0.00218669",
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      },
      {
        "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",
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    ],
    "b_top": [
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        "name": "UNIV OF CA REGENTS",
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      {
        "name": "LOS ANGELES UNIF SD-A",
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      {
        "name": "LOS ANGELES UNIF SD-A",
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      {
        "name": "California (State of) Educational Facilities Authority (Stanford University), Series 2014 U-6, RB",
        "value": "20125040.38",
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      {
        "name": "UNIV OF CALIFORNIA CA REVENUES REGD N/C B/E 5.00000000",
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      },
      {
        "name": "CA ST UNIV TRUSTEES-A",
        "value": "18897942.76",
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      {
        "name": "State of California 5.00% 03/01/2055",
        "value": "17280467.21",
        "weight": "0.00415211",
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      {
        "name": "San Francisco City & County Airport Comm-San Francisco International Airport",
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      {
        "name": "Orange County Water District, Series 2003A",
        "value": "16500000.00",
        "weight": "0.00396458",
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      {
        "name": "University of California, Series 2025BZ",
        "value": "15091485.00",
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      {
        "name": "State of California",
        "value": "15010984.50",
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      {
        "name": "E CO AWP JT PWRS-A-1",
        "value": "14519749.00",
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      {
        "name": "Bay Area Toll Authority, Series 2023 A, VRD Ref. RB",
        "value": "14045000.00",
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      },
      {
        "name": "STATE OF CALIFORNIA 4.0% 09-01-43",
        "value": "13434463.49",
        "weight": "0.00322800",
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      },
      {
        "name": "State of California, Series 2007",
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      {
        "name": "Toll Road Sr Lien Refunding RB Series 2021A",
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      {
        "name": "SAN FRANCISCO PUB UTI",
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      },
      {
        "name": "UNIV OF CALIFORNIA CA",
        "value": "12290520.78",
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      {
        "name": "Los Angeles Community College District, Series F",
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      {
        "name": "San Diego Unified School District, Series 2023G-3",
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        "name": "STATE OF CALIFORNIA 4.0% 03-01-36",
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      {
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      {
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      {
        "name": "STATE OF CALIFORNIA",
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      {
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      {
        "name": "Los Angeles Community College District, Series D",
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      {
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      {
        "name": "STATE OF CALIFORNIA 4.0% 09-01-29",
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      {
        "name": "LOS ANGELES DEPT -D",
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      {
        "name": "State of California, Series 2024",
        "value": "10311166.42",
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      {
        "name": "Coast Community College District, Series 2017D",
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      },
      {
        "name": "OAKLAND USD-REF",
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      {
        "name": "Mt. San Antonio Community College District, Series 2024D",
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      {
        "name": "UNIV OF CALIFORNIA-BV",
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        "name": "UNIV OF CALIFORNIA CA REVENUES REGD N/C B/E 5.00000000",
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      },
      {
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      {
        "name": "STHRN CALIFORNIA ST",
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      {
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        "name": "San Joaquin Hills Transportation Corridor Agency, Series 2021 A, Ref. RB",
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        "name": "University of California, Series 2026 CE",
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      {
        "name": "State of California",
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      },
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        "name": "FOOTHILL ESTRN TRANSPRTN CORRIDOR AGY CA TOLL ROAD REVENUE",
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      },
      {
        "name": "State of California",
        "value": "9321046.40",
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      },
      {
        "name": "El Camino Community College District Fountation (The), Series 2012C",
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      },
      {
        "name": "Palo Alto Unified School District, Series 2025",
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      },
      {
        "name": "Los Angeles (City of), CA, Series 2025, RN",
        "value": "9168980.28",
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      }
    ]
  },
  "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"
    },
    {
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      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126008204/0002071691-26-008204-index.htm"
    }
  ]
}