{
  "page": "compare",
  "query": {
    "a": "SUB",
    "b": "IBMS"
  },
  "retrieved_at": "2026-07-07T18:52:51+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 Short-Term National Muni Bond ETF",
    "ticker": "SUB",
    "slug": "SUB",
    "series_id": "S000023507",
    "html_url": "https://fundwatcher.app/funds/SUB/"
  },
  "fund_b": {
    "name": "iShares iBonds Dec 2030 Term Muni Bond ETF",
    "ticker": "IBMS",
    "slug": "IBMS",
    "series_id": "S000085095",
    "html_url": "https://fundwatcher.app/funds/IBMS/"
  },
  "overlap": {
    "coverage_a_by_b": "0.05203737122433971173971016581",
    "coverage_b_by_a": "0.05203737122433971173971016581",
    "shared_count": 172,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "BLKR-LI MUNI-INS",
        "value": "108299651.03",
        "weight": "0.00993702",
        "shared": true
      },
      {
        "name": "STATE OF NEW JERSEY 5.0% 03-01-28",
        "value": "41740384.86",
        "weight": "0.00382988",
        "shared": false
      },
      {
        "name": "WA KINUTL 01/01/2042",
        "value": "39115000.00",
        "weight": "0.00358899",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA 5.0% 08-01-29",
        "value": "31460849.26",
        "weight": "0.00288669",
        "shared": false
      },
      {
        "name": "NEW YORK ST URBAN DEV CORP REVENUE",
        "value": "28844324.30",
        "weight": "0.00264661",
        "shared": false
      },
      {
        "name": "UNIV OF CALIFORNIA CA REVENUES REGD N/C B/E 5.00000000",
        "value": "28543197.50",
        "weight": "0.00261898",
        "shared": true
      },
      {
        "name": "NJ TPK AUTH-B",
        "value": "28388156.48",
        "weight": "0.00260475",
        "shared": true
      },
      {
        "name": "Pennsylvania Turnpike Commission, Series 2023B",
        "value": "27945000.00",
        "weight": "0.00256409",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "27419560.16",
        "weight": "0.00251588",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA 5.0% 11-01-27",
        "value": "27321782.80",
        "weight": "0.00250691",
        "shared": false
      },
      {
        "name": "Empire State Development Corp., Series 2021A",
        "value": "25181425.33",
        "weight": "0.00231052",
        "shared": false
      },
      {
        "name": "DT OF COLUMBIA-C-2",
        "value": "25000000.00",
        "weight": "0.00229387",
        "shared": false
      },
      {
        "name": "Connecticut State Health & Educational Facilities Authority, Series 2017C-4",
        "value": "25000000.00",
        "weight": "0.00229387",
        "shared": false
      },
      {
        "name": "CONNECTICUT ST SPL TAX OBLIG REVENUE",
        "value": "24373832.63",
        "weight": "0.00223642",
        "shared": false
      },
      {
        "name": "NY TRANS FIN AUTH-D-1",
        "value": "24144848.30",
        "weight": "0.00221541",
        "shared": false
      },
      {
        "name": "NEW YORK B-1-REF",
        "value": "24112523.78",
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      },
      {
        "name": "State of New Jersey, Series A",
        "value": "23718948.11",
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        "shared": false
      },
      {
        "name": "MA ST-REF-A",
        "value": "23543162.30",
        "weight": "0.00216020",
        "shared": true
      },
      {
        "name": "HOUSTON TX UTILITY SYS REVENUE CITY OF HOUSTON TX COMBINED UTILITY SYSTEM REVENUE",
        "value": "23100000.00",
        "weight": "0.00211954",
        "shared": false
      },
      {
        "name": "CT HLTH & EDUCTNL-B-1",
        "value": "23052920.88",
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      },
      {
        "name": "KING CNTY WA SWR REVENUE COUNTY OF KING WA SEWER REVENUE",
        "value": "23030000.00",
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        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST-1ST",
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      },
      {
        "name": "NYC TRANSITIONAL-A-1",
        "value": "22922625.53",
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      },
      {
        "name": "Ohio Water Development Authority, Series 2018",
        "value": "22791149.07",
        "weight": "0.00209120",
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      },
      {
        "name": "State of New Jersey, Series 2020A",
        "value": "22260292.61",
        "weight": "0.00204249",
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      },
      {
        "name": "Kentucky State Property & Building Commission, Series B",
        "value": "22260285.91",
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      },
      {
        "name": "State of Georgia, Series 2022A",
        "value": "22004798.06",
        "weight": "0.00201905",
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      },
      {
        "name": "MINNESOTA ST PUBLIC FACS AUTH REVOLVING FUND REVENUE",
        "value": "21256115.15",
        "weight": "0.00195035",
        "shared": false
      },
      {
        "name": "City of Seattle, Series 2023B",
        "value": "20900000.00",
        "weight": "0.00191768",
        "shared": false
      },
      {
        "name": "WA ST-SER R-2023A-REF",
        "value": "20645695.62",
        "weight": "0.00189434",
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      },
      {
        "name": "COLORADO ST EDUC LOAN PROGRAM",
        "value": "20175410.00",
        "weight": "0.00185119",
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      },
      {
        "name": "NEW JERSEY ST EDUCTNL FACS AUTH REVENUE",
        "value": "20129113.85",
        "weight": "0.00184694",
        "shared": false
      },
      {
        "name": "E CO AWP JT PWRS-A-1",
        "value": "20027240.00",
        "weight": "0.00183760",
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      },
      {
        "name": "State of Minnesota, Series 2022A",
        "value": "20000000.00",
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        "shared": false
      },
      {
        "name": "State of New Jersey, Series 2020A",
        "value": "19862643.52",
        "weight": "0.00182249",
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      {
        "name": "Pennsylvania Turnpike Commission, Series 2016B",
        "value": "19829072.43",
        "weight": "0.00181941",
        "shared": false
      },
      {
        "name": "Houston (City of), TX, Series 2016 A, Ref. GO Bonds",
        "value": "19742788.40",
        "weight": "0.00181150",
        "shared": false
      },
      {
        "name": "SOUTH CAROLINA ST PUBLIC SVC AUTH REVENUE",
        "value": "19700000.00",
        "weight": "0.00180757",
        "shared": false
      },
      {
        "name": "State of Washington, Series 2022C",
        "value": "19533649.88",
        "weight": "0.00179231",
        "shared": false
      },
      {
        "name": "UNIV OF CALIFORNIA CA REVENUES",
        "value": "19503920.31",
        "weight": "0.00178958",
        "shared": false
      },
      {
        "name": "State of Maryland, Series 2020C-1",
        "value": "19247266.84",
        "weight": "0.00176603",
        "shared": false
      },
      {
        "name": "New York State Dormitory Authority, State Personal Income Tax, Series 2021E",
        "value": "19201537.39",
        "weight": "0.00176184",
        "shared": false
      },
      {
        "name": "Virginia (Commonwealth of) College Building Authority (21st Century College and Equipment Programs), Series 2017, Ref. RB",
        "value": "18897071.53",
        "weight": "0.00173390",
        "shared": false
      },
      {
        "name": "State of Minnesota, Series 2023E",
        "value": "18627686.39",
        "weight": "0.00170918",
        "shared": false
      },
      {
        "name": "University of California, Series 2025, RB",
        "value": "18381183.92",
        "weight": "0.00168656",
        "shared": false
      },
      {
        "name": "State of Illinois, Series D",
        "value": "18310762.80",
        "weight": "0.00168010",
        "shared": false
      },
      {
        "name": "FT BEND TX ISD 4% 8/1/2054",
        "value": "18275213.14",
        "weight": "0.00167684",
        "shared": false
      },
      {
        "name": "Long Island Power Authority, Series 2025C",
        "value": "18250000.00",
        "weight": "0.00167453",
        "shared": false
      },
      {
        "name": "State of Georgia, Series 2023A",
        "value": "17881170.58",
        "weight": "0.00164068",
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      },
      {
        "name": "District of Columbia, Series 2020 B, Ref. RB",
        "value": "17754936.07",
        "weight": "0.00162910",
        "shared": false
      }
    ],
    "b_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": true
      },
      {
        "name": "CT HLTH & EDUCTNL-B-1",
        "value": "1607316.45",
        "weight": "0.00629492",
        "shared": true
      },
      {
        "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": true
      },
      {
        "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": true
      },
      {
        "name": "Honolulu (City & County of), HI (Honolulu Rail Transit), Series 2021, GO Bonds",
        "value": "703031.36",
        "weight": "0.00275336",
        "shared": true
      },
      {
        "name": "NYC TRANS FIN AUTH",
        "value": "692353.48",
        "weight": "0.00271154",
        "shared": true
      },
      {
        "name": "State of Maryland, Series 2020A-2",
        "value": "690389.28",
        "weight": "0.00270385",
        "shared": false
      },
      {
        "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": true
      },
      {
        "name": "LOS ANGELES WTR-A-REF",
        "value": "679671.13",
        "weight": "0.00266187",
        "shared": true
      },
      {
        "name": "MET TRANSPRTN AUTH NY REVENUE",
        "value": "677057.19",
        "weight": "0.00265164",
        "shared": true
      },
      {
        "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": false
      },
      {
        "name": "State of Connecticut, Series 2021A",
        "value": "658447.56",
        "weight": "0.00257875",
        "shared": true
      },
      {
        "name": "State of California",
        "value": "641885.38",
        "weight": "0.00251389",
        "shared": true
      },
      {
        "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",
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      },
      {
        "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": true
      },
      {
        "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",
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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": true
      },
      {
        "name": "E-470 Public Highway Authority, Series B",
        "value": "558340.84",
        "weight": "0.00218669",
        "shared": true
      },
      {
        "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": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-008202",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126008202/0002071691-26-008202-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "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"
    }
  ]
}