{
  "page": "compare",
  "query": {
    "a": "IBMP",
    "b": "MUB"
  },
  "retrieved_at": "2026-07-07T19:07:30+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 2027 Term Muni Bond ETF",
    "ticker": "IBMP",
    "slug": "IBMP",
    "series_id": "S000065128",
    "html_url": "https://fundwatcher.app/funds/IBMP/"
  },
  "fund_b": {
    "name": "iShares National Muni Bond ETF",
    "ticker": "MUB",
    "slug": "MUB",
    "series_id": "S000018861",
    "html_url": "https://fundwatcher.app/funds/MUB/"
  },
  "overlap": {
    "coverage_a_by_b": "0.02457644478721367157659265019",
    "coverage_b_by_a": "0.02457644478721367157659265017",
    "shared_count": 185,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "STATE OF CALIFORNIA 5.0% 04-01-27",
        "value": "2911950.85",
        "weight": "0.00477588",
        "shared": false
      },
      {
        "name": "State of Michigan, Series 2016",
        "value": "2768214.44",
        "weight": "0.00454014",
        "shared": true
      },
      {
        "name": "University of California, Series 2025, RB",
        "value": "2598951.75",
        "weight": "0.00426253",
        "shared": false
      },
      {
        "name": "BLKR-LI MUNI-INS",
        "value": "2471845.86",
        "weight": "0.00405407",
        "shared": true
      },
      {
        "name": "GEISINGER PA AUTH HLTH SYS REV GEISINGER AUTHORITY",
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        "weight": "0.00389706",
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      },
      {
        "name": "State of New Jersey, Series 2020A",
        "value": "2130821.49",
        "weight": "0.00349475",
        "shared": true
      },
      {
        "name": "El Camino Community College District Fountation (The), Series 2012C",
        "value": "2121682.42",
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      },
      {
        "name": "NJ TRANSPRTN TRUST-A",
        "value": "2116047.32",
        "weight": "0.00347052",
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      },
      {
        "name": "City of Boston, Series 2015A",
        "value": "2115458.53",
        "weight": "0.00346956",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST HLTH FACS FING AUTH REVENUE",
        "value": "2056185.33",
        "weight": "0.00337234",
        "shared": false
      },
      {
        "name": "District of Columbia, Series 2019 C, Ref. RB",
        "value": "1919589.83",
        "weight": "0.00314831",
        "shared": true
      },
      {
        "name": "Round Rock Independent School District, Series 2019 A, Ref. GO Bonds",
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      },
      {
        "name": "State of Illinois, Series D",
        "value": "1859203.70",
        "weight": "0.00304927",
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      {
        "name": "Triborough Bridge & Tunnel Authority, Series 2021C2",
        "value": "1845343.98",
        "weight": "0.00302654",
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      },
      {
        "name": "SCAGO Educational Facilities Corp. for Pickens School District, Series 2025",
        "value": "1798653.88",
        "weight": "0.00294997",
        "shared": false
      },
      {
        "name": "State of California 5.00% 04/01/2027",
        "value": "1629244.26",
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      },
      {
        "name": "Florida (State of) Department of Environmental Protection (FL Forever), Series 2016 A, Ref. RB",
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      {
        "name": "NY ST HSG FIN AGY-D-2",
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      {
        "name": "MET TRANSPRTN AUTH NY",
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        "weight": "0.00257715",
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      {
        "name": "Lansing Board of Water & Light, Series 2026B",
        "value": "1554896.55",
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      {
        "name": "MIAMI-DADE WTSW 5% 10/1/2027",
        "value": "1549975.88",
        "weight": "0.00254211",
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      },
      {
        "name": "NEW JERSEY ST ECON DEV AUTH RE REGD N/C B/E 5.00000000",
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        "shared": false
      },
      {
        "name": "MI FIN AUTH-A-REF",
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      },
      {
        "name": "Dallas (City of), TX Area Rapid Transit, Series 2019, Ref. RB",
        "value": "1502841.06",
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      {
        "name": "Bay Area Toll Authority, Series 2017S-7",
        "value": "1498498.60",
        "weight": "0.00245768",
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      },
      {
        "name": "Ohio Water Development Authority, Series 2019A",
        "value": "1491261.42",
        "weight": "0.00244581",
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      },
      {
        "name": "Alabama (State of) Public School & College Authority (Social Bonds), Series 2020 A, Ref. RB",
        "value": "1464640.24",
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      },
      {
        "name": "Omaha Public Power District, Series 2016A",
        "value": "1460000.00",
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      {
        "name": "COLORADO ST HLTH FACS",
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      {
        "name": "Grand River Dam Authority, Series 2016 A, Ref. RB",
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        "name": "PREREF ALABAMA FEDERAL AID HIGHWAY FI REGD B/E PREREFUNDED 09/01/27 @ 100 5.00000000",
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      {
        "name": "ILL ST TOLL 5% 1/1/2027",
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      },
      {
        "name": "NYC TRANSITIONAL FIN",
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        "weight": "0.00230817",
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      },
      {
        "name": "NEW YORK NY",
        "value": "1373218.44",
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      {
        "name": "FLORIDA INSURANCE ASSISTANCE INTERLOCAL AGY",
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      },
      {
        "name": "State of Minnesota, Series 2021A",
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      {
        "name": "PENNSYLVANIA ST",
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      },
      {
        "name": "E-470 Public Highway Authority, Series 2004A",
        "value": "1346171.82",
        "weight": "0.00220785",
        "shared": false
      },
      {
        "name": "Indiana (State of) Finance Authority (CWA Authority), Series 2021, Ref. RB",
        "value": "1325886.99",
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      {
        "name": "NJ EDA REV 4% 11/1/2027",
        "value": "1324016.33",
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        "shared": true
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      {
        "name": "UNIV OF WASHINGTON WA UNIV REV REGD V/R B/E 4.00000000",
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        "weight": "0.00206078",
        "shared": false
      },
      {
        "name": "Pflugerville Independent School District, Series 2019A",
        "value": "1254931.41",
        "weight": "0.00205821",
        "shared": false
      },
      {
        "name": "RI COMMERCE CORP-B",
        "value": "1245818.85",
        "weight": "0.00204326",
        "shared": true
      },
      {
        "name": "Northside Independent School District, Series 2021",
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        "weight": "0.00202296",
        "shared": false
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      {
        "name": "New Jersey Transportation Trust Fund Authority, Series 2022AA",
        "value": "1229174.55",
        "weight": "0.00201597",
        "shared": false
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      {
        "name": "Pennsylvania (Commonwealth of), First Series 2017, Ref. GO Bonds",
        "value": "1194191.17",
        "weight": "0.00195859",
        "shared": false
      },
      {
        "name": "VIRGINIA ST CLG BLDG AUTH EDUCTNL FACS REVENUE 21ST CENTURY",
        "value": "1181653.41",
        "weight": "0.00193803",
        "shared": false
      },
      {
        "name": "Los Angeles (County of), CA Metropolitan Transportation Authority (Green Bonds), Series 2020 A, RB",
        "value": "1167375.55",
        "weight": "0.00191461",
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      {
        "name": "ILLINOIS ST TOLL HIGHWAY AUTH",
        "value": "1158417.92",
        "weight": "0.00189992",
        "shared": true
      },
      {
        "name": "NEW YORK NY REGD N/C B/E 5.00000000",
        "value": "1154751.87",
        "weight": "0.00189391",
        "shared": false
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    "b_top": [
      {
        "name": "BLKR-LI MUNI-INS",
        "value": "242983297.79",
        "weight": "0.00564953",
        "shared": true
      },
      {
        "name": "UNIV OF TEXAS TX UNIV REVENUES UNIHGR 08/36 FIXED 5",
        "value": "90014038.63",
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      },
      {
        "name": "Connecticut State Health & Educational Facilities Authority, Series 2017C-4",
        "value": "85000000.00",
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      {
        "name": "City of Atlanta Water & Wastewater, Series 2015",
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      {
        "name": "TX NWTSCD 5.25 02/15/2055",
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      {
        "name": "NYS TWY PIT 5% 3/15/2048",
        "value": "69237874.05",
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      },
      {
        "name": "HOUSTON TX HGR EDU FIN CORP REGD N/C B/E 5.00000000",
        "value": "64910233.40",
        "weight": "0.00150921",
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      },
      {
        "name": "NY ST DORM AUTH PIT 20D SF 4.0% 02-15-47",
        "value": "60673678.11",
        "weight": "0.00141070",
        "shared": false
      },
      {
        "name": "OHIO ST UNIV REGD N/C B/E 5.00000000",
        "value": "59853495.00",
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        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA 5.0% 09-01-31",
        "value": "57721625.00",
        "weight": "0.00134207",
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      },
      {
        "name": "State of New Jersey, Series 2020A",
        "value": "57393987.08",
        "weight": "0.00133445",
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      },
      {
        "name": "WASHINGTON ST-R-2022",
        "value": "56388923.70",
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        "shared": false
      },
      {
        "name": "Pennsylvania Turnpike Commission, Series 2019-2",
        "value": "52715000.00",
        "weight": "0.00122566",
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      },
      {
        "name": "Chicago Transit Authority, Series A",
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      },
      {
        "name": "NJ EDUCTNL FACS AUTH",
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      },
      {
        "name": "Washoe County School District, Series 2017C",
        "value": "50701621.71",
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      {
        "name": "NJ NJSEDU 07/01/2064",
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        "name": "E CO AWP JT PWRS-A-1",
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      },
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        "name": "State of Illinois, Series D",
        "value": "49472745.11",
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      },
      {
        "name": "MASSACHUSETTS ST-B",
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      },
      {
        "name": "District of Columbia, Series 2025A",
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      {
        "name": "NYC WTR 5.25% 6/15/2047",
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      },
      {
        "name": "MA ST 5% 11/1/52",
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      {
        "name": "NEW YORK NY",
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      {
        "name": "CALIFORNIA ST EDUCTNL FACS AUTH REVENUE",
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      },
      {
        "name": "San Diego Unified School District, Series 2020D-2",
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      {
        "name": "Colorado Springs (City of), CO, Series 2024 A, RB",
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      {
        "name": "Triborough Bridge & Tunnel Authority, Series 2024A",
        "value": "41831145.85",
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      },
      {
        "name": "NJ TRN FD CAB-SER C",
        "value": "41772555.00",
        "weight": "0.00097124",
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      },
      {
        "name": "Los Angeles Unified School District, Series 2020 RYQ, GO Bonds",
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        "shared": false
      },
      {
        "name": "UNIV OF CA REGENTS",
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      },
      {
        "name": "NY ST UDC PIT REV 20A SF 4.0% 03-15-49",
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      },
      {
        "name": "NYC WTR 5% 6/15/48",
        "value": "40539856.36",
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      },
      {
        "name": "PENNSYLVANIA CMWLTH",
        "value": "40532012.00",
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      },
      {
        "name": "TRIBOROUGH NY BRIDGE   TUNNEL TRBTRN 05/51 FIXED 5",
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      },
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        "name": "New York State Thruway Authority, Series 2021A-1",
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      },
      {
        "name": "NY ST THRWY AUTH",
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      },
      {
        "name": "OH WTR DEV AUTH-C",
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      {
        "name": "State of Maryland, Series 2023A",
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      },
      {
        "name": "New Orleans, Louisiana, General Obligation Bonds, Public Improvement Series 2024A",
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        "name": "MA ST-A",
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        "name": "MBTA SLS TAX 5.25% 7/1/2052",
        "value": "37926722.94",
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        "shared": false
      },
      {
        "name": "UNIV OF CA REGENTS",
        "value": "37879553.00",
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      },
      {
        "name": "PROSPER TX INDEP SCH DIST REGD OID B/E PSF-GTD 4.00000000",
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      },
      {
        "name": "Ector County, Texas, Certificates of Obligation, Series 2024",
        "value": "37460608.19",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-007323",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126007323/0002071691-26-007323-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0002071691-26-008205",
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      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126008205/0002071691-26-008205-index.htm"
    }
  ]
}