{
  "page": "compare",
  "query": {
    "a": "IBMS",
    "b": "SHM"
  },
  "retrieved_at": "2026-07-07T18:26:52+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": "State Street(R) SPDR Nuveen ICE Short Term Municipal Bond ETF",
    "ticker": "SHM",
    "slug": "SHM",
    "series_id": "S000017327",
    "html_url": "https://fundwatcher.app/funds/SHM/"
  },
  "overlap": {
    "coverage_a_by_b": "0.01685640702926997642788611918",
    "coverage_b_by_a": "0.01685640702926997642788611919",
    "shared_count": 24,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "BLKR-LI MUNI-INS",
        "value": "1725764.27",
        "weight": "0.00675881",
        "shared": false
      },
      {
        "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": 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": true
      },
      {
        "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": 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": 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": true
      },
      {
        "name": "IL ST TOLL HWY AUTH",
        "value": "675696.38",
        "weight": "0.00264631",
        "shared": false
      },
      {
        "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": 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": true
      },
      {
        "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": true
      }
    ],
    "b_top": [
      {
        "name": "SOUTHEAST ENERGY-E",
        "value": "31832046.00",
        "weight": "0.00925343",
        "shared": false
      },
      {
        "name": "NEW YORK NY REGD N/C B/E 5.00000000",
        "value": "31282618.09",
        "weight": "0.00909372",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA",
        "value": "23977674.27",
        "weight": "0.00697020",
        "shared": false
      },
      {
        "name": "NEW YORK ST DORM AUTH ST PERSONAL INCOME TAX REVENUE",
        "value": "21383898.00",
        "weight": "0.00621620",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA 5.0% 03-01-29",
        "value": "18162225.40",
        "weight": "0.00527968",
        "shared": false
      },
      {
        "name": "New York City Transitional Finance Authority Future Tax Secured Revenue",
        "value": "17897542.70",
        "weight": "0.00520274",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "17495729.92",
        "weight": "0.00508593",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "16932940.80",
        "weight": "0.00492233",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA",
        "value": "15874632.00",
        "weight": "0.00461468",
        "shared": false
      },
      {
        "name": "UNIV OF CALIFORNIA CA REVENUES",
        "value": "14147270.59",
        "weight": "0.00411255",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "14113757.33",
        "weight": "0.00410281",
        "shared": false
      },
      {
        "name": "NEW YORK NY REGD N/C B/E 5.00000000",
        "value": "13703489.20",
        "weight": "0.00398354",
        "shared": false
      },
      {
        "name": "Alabama (State of) Federal Aid Highway Finance Authority (Garvee), Series 2025 B, Ref. RB",
        "value": "13480445.00",
        "weight": "0.00391871",
        "shared": false
      },
      {
        "name": "NEW JERSEY ST EDUCTNL FACS AUTH REVENUE",
        "value": "12801586.25",
        "weight": "0.00372136",
        "shared": false
      },
      {
        "name": "FLORIDA ST TURNPIKE AUTH TURNPIKE REVENUE",
        "value": "12785836.35",
        "weight": "0.00371679",
        "shared": false
      },
      {
        "name": "New Jersey Transportation Trust Fund Authority, Transportation System, Series 2019A",
        "value": "12745231.98",
        "weight": "0.00370498",
        "shared": false
      },
      {
        "name": "MARYLAND ST DEPT OF TRANSPRTN CONSOL TRANSPRTN",
        "value": "12507832.28",
        "weight": "0.00363597",
        "shared": false
      },
      {
        "name": "CA ST PUBLIC WKS BRD",
        "value": "12486320.40",
        "weight": "0.00362972",
        "shared": false
      },
      {
        "name": "MONTGOMERY CNTY MD",
        "value": "12442012.54",
        "weight": "0.00361684",
        "shared": false
      },
      {
        "name": "NEW MEXICO ST SEVERANCE TAX",
        "value": "12310152.86",
        "weight": "0.00357851",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Clean Energy) (Green Bonds), Series 2022 A-1, RB",
        "value": "11690810.67",
        "weight": "0.00339847",
        "shared": false
      },
      {
        "name": "State of Connecticut, Series 2021D",
        "value": "11346295.40",
        "weight": "0.00329832",
        "shared": false
      },
      {
        "name": "STATE OF NEW YORK PERSONAL INCOME TAX REVENUE 5.0% 03-15-27",
        "value": "11213514.99",
        "weight": "0.00325972",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "11181591.26",
        "weight": "0.00325044",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2025A",
        "value": "11111947.35",
        "weight": "0.00323019",
        "shared": false
      },
      {
        "name": "E CO AWP JT PWRS-A-1",
        "value": "11001876.60",
        "weight": "0.00319820",
        "shared": false
      },
      {
        "name": "WASHINGTON ST-R-2026A",
        "value": "10938830.00",
        "weight": "0.00317987",
        "shared": false
      },
      {
        "name": "Clark County School District, Series 2025, GO Bonds",
        "value": "10855849.00",
        "weight": "0.00315575",
        "shared": false
      },
      {
        "name": "State of Minnesota, Series 2024, GO Bonds",
        "value": "10777174.00",
        "weight": "0.00313288",
        "shared": false
      },
      {
        "name": "State of Illinois, Series 2025, GO Bonds",
        "value": "10772499.00",
        "weight": "0.00313152",
        "shared": false
      },
      {
        "name": "State of Illinois, Series 2025B",
        "value": "10722992.00",
        "weight": "0.00311713",
        "shared": false
      },
      {
        "name": "CONNECTICUT ST SPL TAX OBLIG REVENUE",
        "value": "10547197.00",
        "weight": "0.00306602",
        "shared": false
      },
      {
        "name": "Los Angeles Department of Water & Power, Series 2023A",
        "value": "10453646.00",
        "weight": "0.00303883",
        "shared": false
      },
      {
        "name": "DALLAS TX",
        "value": "10449652.00",
        "weight": "0.00303767",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "10398303.00",
        "weight": "0.00302274",
        "shared": false
      },
      {
        "name": "Los Angeles Community College District, Series A-1",
        "value": "10372235.00",
        "weight": "0.00301516",
        "shared": false
      },
      {
        "name": "DE KALB CNTY GA WTR & SWR REVENUE",
        "value": "10367927.00",
        "weight": "0.00301391",
        "shared": false
      },
      {
        "name": "VIRGINIA ST PUB BLDG AUTH PUBLIC FACS REVENUE",
        "value": "10334739.00",
        "weight": "0.00300426",
        "shared": false
      },
      {
        "name": "ILLINOIS ST-B",
        "value": "10333589.00",
        "weight": "0.00300393",
        "shared": false
      },
      {
        "name": "State of North Carolina, Series 2022A",
        "value": "10297906.64",
        "weight": "0.00299356",
        "shared": false
      },
      {
        "name": "WASHINGTON ST",
        "value": "10268948.03",
        "weight": "0.00298514",
        "shared": false
      },
      {
        "name": "RICHLAND CNTY SC SCH DIST #2",
        "value": "10230243.00",
        "weight": "0.00297389",
        "shared": false
      },
      {
        "name": "VIRGINIA ST CLG BLDG AUTH EDUCTNL FACS REVENUE 21ST CENTURY",
        "value": "10208612.00",
        "weight": "0.00296760",
        "shared": false
      },
      {
        "name": "WA ST-R-REF",
        "value": "10037758.00",
        "weight": "0.00291793",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Clean Energy) (Green Bonds), Series 2023, RB",
        "value": "10023562.10",
        "weight": "0.00291380",
        "shared": false
      },
      {
        "name": "NY NY CITY HS(NEW YORK MHSG) 3.25% 2/1/30 MT 65",
        "value": "10017728.00",
        "weight": "0.00291211",
        "shared": false
      },
      {
        "name": "NYC MUNI WTR FIN-BB-2",
        "value": "9906302.03",
        "weight": "0.00287972",
        "shared": false
      },
      {
        "name": "State of Maryland, Series 2022C",
        "value": "9607975.34",
        "weight": "0.00279300",
        "shared": false
      },
      {
        "name": "California Community Choice Financing Authority",
        "value": "9534678.30",
        "weight": "0.00277169",
        "shared": false
      },
      {
        "name": "TENNESSEE ST",
        "value": "9459136.80",
        "weight": "0.00274973",
        "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": "0001410368-26-055508",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1064642/000141036826055508/0001410368-26-055508-index.htm"
    }
  ]
}