{
  "page": "compare",
  "query": {
    "a": "JMST",
    "b": "JMUB"
  },
  "retrieved_at": "2026-07-07T14:22:43+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": "JPMorgan Ultra-Short Municipal Income ETF",
    "ticker": "JMST",
    "slug": "JMST",
    "series_id": "S000063269",
    "html_url": "https://fundwatcher.app/funds/JMST/"
  },
  "fund_b": {
    "name": "JPMorgan Municipal ETF",
    "ticker": "JMUB",
    "slug": "JMUB",
    "series_id": "S000063268",
    "html_url": "https://fundwatcher.app/funds/JMUB/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1233704114303461403271766662",
    "coverage_b_by_a": "0.1233704114303461403271766662",
    "shared_count": 56,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "JPMorgan Institutional Tax Free Money Market Fund, Class IM",
        "value": "820987514.18",
        "weight": "0.13433149",
        "shared": true
      },
      {
        "name": "NYC MUNI WTR FIN AUTH",
        "value": "65000000.00",
        "weight": "0.01063542",
        "shared": false
      },
      {
        "name": "WASHINGTON ST-R-2026A",
        "value": "58514028.03",
        "weight": "0.00957417",
        "shared": false
      },
      {
        "name": "State of Minnesota, Various Purpose, Series 2025D",
        "value": "50297402.52",
        "weight": "0.00822975",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH REVENUES",
        "value": "47593694.15",
        "weight": "0.00778737",
        "shared": false
      },
      {
        "name": "Township of Woodbridge",
        "value": "45378198.77",
        "weight": "0.00742486",
        "shared": false
      },
      {
        "name": "Maryland Health & Higher Educational Facilities Authority, Series 2025 C-1",
        "value": "45000000.00",
        "weight": "0.00736298",
        "shared": false
      },
      {
        "name": "Tarrant County Cultural Education Facilities Finance Corp., Series 2012, RB",
        "value": "42920000.00",
        "weight": "0.00702265",
        "shared": false
      },
      {
        "name": "County of Hamilton Sales Tax",
        "value": "42598229.52",
        "weight": "0.00697000",
        "shared": true
      },
      {
        "name": "NYC TRANSTNL-C6-VAR",
        "value": "40000000.00",
        "weight": "0.00654487",
        "shared": false
      },
      {
        "name": "HOUSTON TX UTILITY SYS REVENUE CITY OF HOUSTON TX COMBINED UTILITY SYSTEM REVENUE",
        "value": "40000000.00",
        "weight": "0.00654487",
        "shared": false
      },
      {
        "name": "NYC GEN OBLIG-A-4",
        "value": "40000000.00",
        "weight": "0.00654487",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
        "value": "40000000.00",
        "weight": "0.00654487",
        "shared": false
      },
      {
        "name": "City of Bristol",
        "value": "38046710.56",
        "weight": "0.00622527",
        "shared": false
      },
      {
        "name": "Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Variable Rate Series 2020",
        "value": "38000000.00",
        "weight": "0.00621763",
        "shared": false
      },
      {
        "name": "Township of Hamilton",
        "value": "37376308.50",
        "weight": "0.00611558",
        "shared": false
      },
      {
        "name": "Township of Parsippany-Troy Hills",
        "value": "36610082.66",
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      },
      {
        "name": "Township of Livingston",
        "value": "36117312.60",
        "weight": "0.00590958",
        "shared": false
      },
      {
        "name": "City of Hudson, Limited Tax",
        "value": "35781467.29",
        "weight": "0.00585463",
        "shared": false
      },
      {
        "name": "SAINT LUCIE CNTY FL POLL CONTR COUNTY OF ST LUCIE FL",
        "value": "35750000.00",
        "weight": "0.00584948",
        "shared": false
      },
      {
        "name": "NYC WTR-AA-2",
        "value": "35000000.00",
        "weight": "0.00572676",
        "shared": false
      },
      {
        "name": "Connecticut State, Special Tax Obligation Bonds, Transportation Infrastructure Purposes, Series 2025A",
        "value": "34624721.25",
        "weight": "0.00566536",
        "shared": false
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      {
        "name": "State of Louisiana, Series 2023 A-2",
        "value": "33900000.00",
        "weight": "0.00554678",
        "shared": false
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      {
        "name": "San Antonio Water System, Subordinate Lien, Series 2024A",
        "value": "33300000.00",
        "weight": "0.00544861",
        "shared": false
      },
      {
        "name": "MICHIGAN ST BLDG AUTH REVENUE",
        "value": "33000000.00",
        "weight": "0.00539952",
        "shared": false
      },
      {
        "name": "Maine School Administrative District No. 51, Series 2025B",
        "value": "32920059.25",
        "weight": "0.00538644",
        "shared": false
      },
      {
        "name": "COLORADO SPRINGS CO UTILITIES REVENUE",
        "value": "32400000.00",
        "weight": "0.00530135",
        "shared": false
      },
      {
        "name": "Township of Teaneck",
        "value": "31810928.66",
        "weight": "0.00520496",
        "shared": false
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      {
        "name": "Clark County School District, Series 2025B",
        "value": "31595697.25",
        "weight": "0.00516975",
        "shared": false
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      {
        "name": "Spartanburg County School District No. 7",
        "value": "31325372.90",
        "weight": "0.00512552",
        "shared": false
      },
      {
        "name": "Township of Cherry Hill",
        "value": "30251857.23",
        "weight": "0.00494986",
        "shared": false
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      {
        "name": "City of Albany",
        "value": "30025077.00",
        "weight": "0.00491276",
        "shared": false
      },
      {
        "name": "VALDEZ AK MARINE TERMINAL REVE VALTRN 05/31 ADJUSTABLE VAR",
        "value": "30000000.00",
        "weight": "0.00490866",
        "shared": false
      },
      {
        "name": "DELAWARE VLY REG-B",
        "value": "30000000.00",
        "weight": "0.00490866",
        "shared": false
      },
      {
        "name": "TNDR OPT-FLTR-046",
        "value": "30000000.00",
        "weight": "0.00490866",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST INFRASTRUCTURE & ECON DEV BANK REVENUE",
        "value": "28482275.85",
        "weight": "0.00466032",
        "shared": false
      },
      {
        "name": "COLORADO ST HLTH FACS AUTH REV REGD V/R B/E 2.65000000",
        "value": "28100000.00",
        "weight": "0.00459777",
        "shared": true
      },
      {
        "name": "JERSEY CITY NJ",
        "value": "26877169.34",
        "weight": "0.00439769",
        "shared": false
      },
      {
        "name": "Township of Edison",
        "value": "26172019.32",
        "weight": "0.00428231",
        "shared": false
      },
      {
        "name": "Township of West Windsor",
        "value": "25969663.88",
        "weight": "0.00424920",
        "shared": false
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      {
        "name": "BLACK BELT ENERGY GAS FRN",
        "value": "25718728.94",
        "weight": "0.00420815",
        "shared": false
      },
      {
        "name": "Town of South Kingstown, Series 2025-1",
        "value": "25127257.50",
        "weight": "0.00411137",
        "shared": false
      },
      {
        "name": "Colorado (State of) Health Facilities Authority (Intermountain Healthcare), Series 2024, RB",
        "value": "25000000.00",
        "weight": "0.00409055",
        "shared": false
      },
      {
        "name": "Alaska Housing Finance Corp., Home Mortgage, Series 2007A",
        "value": "25000000.00",
        "weight": "0.00409055",
        "shared": false
      },
      {
        "name": "University of Colorado Hospital Authority, Series 2018, RB",
        "value": "25000000.00",
        "weight": "0.00409055",
        "shared": false
      },
      {
        "name": "City of Jacksonville, Health Care Facilities, Baptist Health",
        "value": "25000000.00",
        "weight": "0.00409055",
        "shared": false
      },
      {
        "name": "City of Sea Isle City",
        "value": "24931232.87",
        "weight": "0.00407929",
        "shared": false
      },
      {
        "name": "Connecticut Housing Finance Authority, Housing Mortgage Finance Program, Series 2025, Subseries C-3",
        "value": "24680000.00",
        "weight": "0.00403819",
        "shared": false
      },
      {
        "name": "MONMOUTH COUNTY IMPROVEMENT AUTHORITY/THE",
        "value": "24556398.70",
        "weight": "0.00401796",
        "shared": false
      },
      {
        "name": "City of Houston",
        "value": "23508318.31",
        "weight": "0.00384647",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "JPMorgan Institutional Tax Free Money Market Fund, Class IM",
        "value": "698218261.12",
        "weight": "0.09703013",
        "shared": true
      },
      {
        "name": "CA CCEDEV 5 03/01/2036",
        "value": "70484945.92",
        "weight": "0.00979517",
        "shared": false
      },
      {
        "name": "OH BUCGEN 5 06/01/2055",
        "value": "44324327.52",
        "weight": "0.00615967",
        "shared": false
      },
      {
        "name": "CONNECTICUT ST HLTH & EDUCTNL FACS AUTH REVENUE",
        "value": "40000000.00",
        "weight": "0.00555873",
        "shared": true
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "39729882.14",
        "weight": "0.00552119",
        "shared": false
      },
      {
        "name": "County of Utah UT",
        "value": "35000000.00",
        "weight": "0.00486389",
        "shared": false
      },
      {
        "name": "BLACK BELT ENERGY GAS DISTRICT (MPT) 5.0% 03-01-55",
        "value": "34395637.05",
        "weight": "0.00477990",
        "shared": false
      },
      {
        "name": "PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000",
        "value": "33977683.66",
        "weight": "0.00472182",
        "shared": false
      },
      {
        "name": "LONG ISLAND PWR-B",
        "value": "33935333.30",
        "weight": "0.00471593",
        "shared": false
      },
      {
        "name": "MAIN STR NAT GA 5% 12/1/2052 MT",
        "value": "32053178.30",
        "weight": "0.00445437",
        "shared": false
      },
      {
        "name": "ILLINOIS ST FIN AUTH REVENUE",
        "value": "29335000.00",
        "weight": "0.00407663",
        "shared": false
      },
      {
        "name": "NORTH CAROLINA HSG FIN AGY HOMEOWNERSHIP REVENUE",
        "value": "28500000.00",
        "weight": "0.00396059",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "27701292.56",
        "weight": "0.00384960",
        "shared": false
      },
      {
        "name": "TX SANUTL 02/01/2055",
        "value": "27240532.20",
        "weight": "0.00378557",
        "shared": false
      },
      {
        "name": "TX DALAPT 11/01/2050",
        "value": "26820807.50",
        "weight": "0.00372724",
        "shared": false
      },
      {
        "name": "WY CAMUTL 3.62 07/15/2039",
        "value": "26526057.69",
        "weight": "0.00368628",
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      },
      {
        "name": "MONTGOMERY INDL 0% 10/1/2053 MT",
        "value": "26004823.30",
        "weight": "0.00361384",
        "shared": false
      },
      {
        "name": "MD HLTH & HGR EDU-B",
        "value": "25000000.00",
        "weight": "0.00347420",
        "shared": false
      },
      {
        "name": "FRANKLIN HOSP-VAR-REF",
        "value": "25000000.00",
        "weight": "0.00347420",
        "shared": false
      },
      {
        "name": "District of Columbia, Series 2025A",
        "value": "24845361.30",
        "weight": "0.00345271",
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      },
      {
        "name": "SALES TAX SECURTZTN-C",
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        "weight": "0.00342853",
        "shared": false
      },
      {
        "name": "LOWER AL GAS DT-A-REF",
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      },
      {
        "name": "Harris County Cultural Education Facilities Finance Corp., Series 2024F",
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      },
      {
        "name": "ILLINOIS ST FIN AUTH REVENUE REGD V/R B/E 3.75000000",
        "value": "22300000.00",
        "weight": "0.00309899",
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      },
      {
        "name": "Salt River Project Agricultural Improvement & Power District, Series 2025, RB",
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      {
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      {
        "name": "TX TXSUTL 01/01/2055",
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      },
      {
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      {
        "name": "OHIO ST UNIV REGD V/R B/E 2.35000000",
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      },
      {
        "name": "State of Illinois, Series 2025D",
        "value": "19946073.60",
        "weight": "0.00277187",
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      {
        "name": "MAIN STR NAT GA 5% MT",
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      },
      {
        "name": "Grossmont-Cuyamaca Community College District, Election of 2002, Series 2008C",
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      {
        "name": "NY TRNSPRTN DEV-AMT",
        "value": "19358624.05",
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      },
      {
        "name": "Main Street Natural Gas, Inc., Series 2025B",
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      {
        "name": "TN TNSUTL 5 11/01/2034",
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      },
      {
        "name": "NEW YORK MUNI WTR-AA2",
        "value": "18271570.82",
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      },
      {
        "name": "MUNIBOND",
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      },
      {
        "name": "NOVELIS CORP (MPT) 5.0% 06-01-55",
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      },
      {
        "name": "OHIO WTR DEV AUTH-A",
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      },
      {
        "name": "NEW YORK ST DORM AUTH ST PERSONAL INCOME TAX REVENUE",
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      },
      {
        "name": "State of Washington, Various Purpose, Series 2026C",
        "value": "17078052.00",
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      {
        "name": "Bergen County Improvement Authority (The), Series 2025 A",
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      {
        "name": "RESTRUCTURED-SER A-2",
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        "name": "TOBACCO SETTLEMENT FING CORP N TOBGEN 06/46 FIXED 5",
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      },
      {
        "name": "State of Washington, Series 2026C",
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      },
      {
        "name": "State of North Carolina, Series 2019",
        "value": "16496329.21",
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      },
      {
        "name": "MUNIBOND",
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      },
      {
        "name": "AL BBEUTL 5 07/01/2033",
        "value": "16263136.50",
        "weight": "0.00226006",
        "shared": false
      },
      {
        "name": "Harris County Cultural Education Facilities Finance Corp. (Texas Children's Hospital), Series 2015, VRD RB",
        "value": "16245000.00",
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        "shared": false
      },
      {
        "name": "STRN UT INDN CO 5% 4/1/2035",
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        "weight": "0.00225655",
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      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-009312",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1485894/000207169126009312/0002071691-26-009312-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0002071691-26-009323",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1485894/000207169126009323/0002071691-26-009323-index.htm"
    }
  ]
}