{
  "page": "compare",
  "query": {
    "a": "MFSM",
    "b": "APMU"
  },
  "retrieved_at": "2026-07-07T17:28:38+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": "MFS Active Intermediate Muni Bond ETF",
    "ticker": "MFSM",
    "slug": "MFSM",
    "series_id": "S000085668",
    "html_url": "https://fundwatcher.app/funds/MFSM/"
  },
  "fund_b": {
    "name": "ActivePassive Intermediate Municipal Bond ETF",
    "ticker": "APMU",
    "slug": "APMU",
    "series_id": "S000075231",
    "html_url": "https://fundwatcher.app/funds/APMU/"
  },
  "overlap": {
    "coverage_a_by_b": "0.05112039200240952442434392287",
    "coverage_b_by_a": "0.05112039200240952442434392286",
    "shared_count": 11,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "State Street Navigator Securities Lending Portfolio II",
        "value": "3348853.41",
        "weight": "0.04555132",
        "shared": false
      },
      {
        "name": "ISHARES NATIONAL MUNI BOND ETF ISHARES NATIONAL MUNI BOND E",
        "value": "2946286.00",
        "weight": "0.04007557",
        "shared": true
      },
      {
        "name": "VANGUARD TAX-EXM",
        "value": "2946240.00",
        "weight": "0.04007494",
        "shared": false
      },
      {
        "name": "PASCO CNTY FL SOL WST DISP & RESOURCE RECOVERY SYS",
        "value": "751057.98",
        "weight": "0.01021594",
        "shared": false
      },
      {
        "name": "Kentucky Bond Development Corp., Series A",
        "value": "575936.10",
        "weight": "0.00783392",
        "shared": true
      },
      {
        "name": "CHERRY CREEK SD#5",
        "value": "575706.85",
        "weight": "0.00783080",
        "shared": false
      },
      {
        "name": "GTR ASHEVILLE REGL ARPT AUTH N REGD B/E AMT AG 5.25000000",
        "value": "549841.00",
        "weight": "0.00747897",
        "shared": false
      },
      {
        "name": "California Community Choice Financing Authority, Series F",
        "value": "548866.50",
        "weight": "0.00746572",
        "shared": true
      },
      {
        "name": "PENNSYLVANIA ST TURNPIKE COMMISSION TURNPIKE REVENUE",
        "value": "548835.85",
        "weight": "0.00746530",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING REGD B/E AMT AG 5.50000000",
        "value": "545506.40",
        "weight": "0.00742001",
        "shared": false
      },
      {
        "name": "State of Minnesota 4.00% 08/01/2041",
        "value": "519783.60",
        "weight": "0.00707013",
        "shared": false
      },
      {
        "name": "NORTH ALLEGHENY PA SC",
        "value": "517393.05",
        "weight": "0.00703761",
        "shared": false
      },
      {
        "name": "NYC HSG DEV CORP-F-2",
        "value": "505958.35",
        "weight": "0.00688208",
        "shared": false
      },
      {
        "name": "SANTA NM 3.29% 12/10/2049 MT",
        "value": "504510.30",
        "weight": "0.00686238",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING REGD B/E AMT 5.00000000",
        "value": "502491.85",
        "weight": "0.00683493",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "488218.46",
        "weight": "0.00664078",
        "shared": false
      },
      {
        "name": "BLACK BELT ENERGY GAS DIST AL GAS PROJECT REVENUE",
        "value": "469192.35",
        "weight": "0.00638198",
        "shared": false
      },
      {
        "name": "Fulton (County of), GA Development Authority (Georgia Institute of Technology), Series 2019, RB",
        "value": "447686.46",
        "weight": "0.00608946",
        "shared": false
      },
      {
        "name": "HOUSTON TX ARPT SYS REVENUE REGD B/E AMT 5.25000000",
        "value": "444149.82",
        "weight": "0.00604135",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Series 2025B",
        "value": "394264.45",
        "weight": "0.00536281",
        "shared": false
      },
      {
        "name": "PROVIDENCE RI PUBLIC BLDGS AUTH REVENUE",
        "value": "385263.04",
        "weight": "0.00524037",
        "shared": false
      },
      {
        "name": "ROCKLAND CNTY NY SOL WST MGMT AUTH",
        "value": "381496.80",
        "weight": "0.00518914",
        "shared": false
      },
      {
        "name": "MAIN STR NAT GA 5% MT",
        "value": "378781.37",
        "weight": "0.00515221",
        "shared": false
      },
      {
        "name": "Los Angeles (City of), CA Department of Airports (Los Angeles International Airport), Series 2018 A, RB",
        "value": "365360.94",
        "weight": "0.00496966",
        "shared": false
      },
      {
        "name": "N ORLEANS AVIAT 5% 1/1/2036@",
        "value": "360164.97",
        "weight": "0.00489899",
        "shared": false
      },
      {
        "name": "METROHEALTH SYSTEM 5.5% 02-15-52",
        "value": "346519.60",
        "weight": "0.00471338",
        "shared": false
      },
      {
        "name": "COOK CNTY IL CMNTY SCH DIST #152 1/2 HAZEL CREST",
        "value": "344323.26",
        "weight": "0.00468351",
        "shared": false
      },
      {
        "name": "Omaha Airport Authority",
        "value": "337127.43",
        "weight": "0.00458563",
        "shared": false
      },
      {
        "name": "PUBLIC FIN AUTH WI REVENUE",
        "value": "337075.52",
        "weight": "0.00458492",
        "shared": false
      },
      {
        "name": "STHRN ILLINOIS ST UNIV",
        "value": "333782.21",
        "weight": "0.00454013",
        "shared": false
      },
      {
        "name": "CENTRL TX REGL MOBILITY AUTH REVENUE",
        "value": "333300.19",
        "weight": "0.00453357",
        "shared": false
      },
      {
        "name": "PUERTO RICO ELEC PWR AUTH PWRREVENUE",
        "value": "332263.43",
        "weight": "0.00451947",
        "shared": false
      },
      {
        "name": "Miami County Unified School District No 367 Osawatomie     5.250%  09/01/2042",
        "value": "328437.87",
        "weight": "0.00446743",
        "shared": false
      },
      {
        "name": "CHESAPEAKE VA HOSP AUTH HOSP FAC REVENUE",
        "value": "325167.81",
        "weight": "0.00442295",
        "shared": false
      },
      {
        "name": "PK CREEK MET DIST-REF",
        "value": "321069.87",
        "weight": "0.00436721",
        "shared": false
      },
      {
        "name": "LAWTON OK INDL DEV AUTH SALES TAX REVENUE",
        "value": "320865.30",
        "weight": "0.00436443",
        "shared": false
      },
      {
        "name": "RAMPART RANGE CO MET DIST #1 LIMITED TAX SUPPORTED & SPL REV",
        "value": "317772.51",
        "weight": "0.00432236",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST EDUCTNL FING AUTH",
        "value": "317098.02",
        "weight": "0.00431319",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING PASMED 03/60 ADJUSTABLE VAR",
        "value": "310811.90",
        "weight": "0.00422768",
        "shared": true
      },
      {
        "name": "GRAND PKWY TRANSPRTN",
        "value": "310065.69",
        "weight": "0.00421753",
        "shared": false
      },
      {
        "name": "RESTRUCTURED-SER A1",
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        "shared": false
      },
      {
        "name": "MAINE HLTH & HGR EDUCTNL FACS AUTH REVENUE",
        "value": "302355.96",
        "weight": "0.00411266",
        "shared": false
      },
      {
        "name": "COMMERCE SCHOOL DISTRICT",
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        "weight": "0.00408154",
        "shared": false
      },
      {
        "name": "UT SALAPT 5 07/01/2042",
        "value": "299715.49",
        "weight": "0.00407675",
        "shared": false
      },
      {
        "name": "METROCARE SERVICES TX REVENUE",
        "value": "296998.54",
        "weight": "0.00403979",
        "shared": false
      },
      {
        "name": "GRAND RIVER CO HOSP DIST",
        "value": "294956.28",
        "weight": "0.00401201",
        "shared": false
      },
      {
        "name": "New York Transportation Development Corp., Series 2025",
        "value": "289840.85",
        "weight": "0.00394243",
        "shared": false
      },
      {
        "name": "SOUTH CAROLINA ST JOBS-ECON DEV AUTH HLTH FACS REVENUE",
        "value": "286176.85",
        "weight": "0.00389260",
        "shared": false
      },
      {
        "name": "WYOMING MI PUBLIC SCHS",
        "value": "283499.98",
        "weight": "0.00385618",
        "shared": false
      },
      {
        "name": "MASSACHUSET REV 5% 7/1/2041",
        "value": "282728.95",
        "weight": "0.00384570",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "ISHARES NATIONAL MUNI BOND ETF ISHARES NATIONAL MUNI BOND E",
        "value": "9030012.60",
        "weight": "0.03894527",
        "shared": true
      },
      {
        "name": "Mount Vernon Liquid Assets Portfolio, LLC",
        "value": "8760715.00",
        "weight": "0.03778383",
        "shared": false
      },
      {
        "name": "FRST AM-GV OB-X",
        "value": "3311995.13",
        "weight": "0.01428421",
        "shared": false
      },
      {
        "name": "TX TRANSPRTN-C-REF",
        "value": "2242709.31",
        "weight": "0.00967251",
        "shared": false
      },
      {
        "name": "MET TRANSPRTN AUTH NY REVENUE",
        "value": "2200873.40",
        "weight": "0.00949208",
        "shared": false
      },
      {
        "name": "STATE OF NEW YORK PERSONAL INCOME TAX REVENUE 5.0% 03-15-33",
        "value": "2058201.08",
        "weight": "0.00887675",
        "shared": false
      },
      {
        "name": "NJ TRANSPRTN TRUST-A",
        "value": "2034261.89",
        "weight": "0.00877351",
        "shared": false
      },
      {
        "name": "GREAT LAKES WTR -B",
        "value": "1990427.60",
        "weight": "0.00858446",
        "shared": false
      },
      {
        "name": "Snohomish County Housing Authority",
        "value": "1951192.28",
        "weight": "0.00841524",
        "shared": false
      },
      {
        "name": "STATE OF CALIFORNIA",
        "value": "1700703.62",
        "weight": "0.00733491",
        "shared": false
      },
      {
        "name": "Volusia County Educational Facility Authority, Series 2025, RB",
        "value": "1670510.70",
        "weight": "0.00720470",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST COMMONWEALTH OF PENNSYLVANIA",
        "value": "1558846.89",
        "weight": "0.00672310",
        "shared": false
      },
      {
        "name": "SAN ANTONIO TX ELEC & GAS REVENUE",
        "value": "1541088.60",
        "weight": "0.00664652",
        "shared": false
      },
      {
        "name": "Pennsylvania Turnpike Commission",
        "value": "1481335.38",
        "weight": "0.00638881",
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      },
      {
        "name": "KY COMMONWEALTH-B-REF",
        "value": "1478134.50",
        "weight": "0.00637500",
        "shared": false
      },
      {
        "name": "NEW YORK NY",
        "value": "1445626.00",
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      },
      {
        "name": "Capital Trust Authority",
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      },
      {
        "name": "State of Illinois Sales Tax Revenue, Series 2025, RB",
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      },
      {
        "name": "State of Ohio",
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        "shared": false
      },
      {
        "name": "LOS ANGELES DEPT-B",
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      },
      {
        "name": "State of Connecticut Special Tax Revenue",
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        "weight": "0.00609487",
        "shared": false
      },
      {
        "name": "Pennsylvania Turnpike Commission Registration Fee Revenue",
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      {
        "name": "TEMPLE UNIV-REF-FIRST",
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      },
      {
        "name": "Maine Municipal Bond Bank, Series 2024A",
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      },
      {
        "name": "Harris County Cultural Education Facilities Finance Corp",
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      },
      {
        "name": "Illinois (State of) Finance Authority (The University of Chicago), Series 2024, RB",
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      {
        "name": "State of Maryland",
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      {
        "name": "District of Columbia",
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      {
        "name": "NYC TRANSITIONL-S-1",
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      },
      {
        "name": "New York State Thruway Authority",
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      {
        "name": "State of Louisiana Gasoline & Fuels Tax Revenue",
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      },
      {
        "name": "Pennsylvania Turnpike Commission",
        "value": "1185593.00",
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      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "1172202.99",
        "weight": "0.00505556",
        "shared": true
      },
      {
        "name": "PHILADELPHIA-C-REF",
        "value": "1170177.70",
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      },
      {
        "name": "State of California, Series 2025, GO Bonds",
        "value": "1164933.80",
        "weight": "0.00502421",
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      },
      {
        "name": "Miami Beach Redevelopment Agency",
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      },
      {
        "name": "DOWNTWN PUB INFRA-A",
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      },
      {
        "name": "NJ TRANSPRTN TRUST-AA",
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      },
      {
        "name": "State of Florida",
        "value": "1137669.42",
        "weight": "0.00490662",
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      },
      {
        "name": "Lower Colorado River Authority, Series 2025",
        "value": "1130087.50",
        "weight": "0.00487392",
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      },
      {
        "name": "Wisconsin (State of) Health & Educational Facilities Authority (Unitypoint Health), Series 2024 B, Ref. RB",
        "value": "1104577.70",
        "weight": "0.00476390",
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      },
      {
        "name": "Oklahoma (State of) Capitol Improvement Authority, Series 2024 A, Ref. RB",
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      },
      {
        "name": "MO HWYS & TRANSPRN -A",
        "value": "1089720.00",
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      },
      {
        "name": "State of Florida",
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      },
      {
        "name": "State of Connecticut",
        "value": "1069823.00",
        "weight": "0.00461401",
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      },
      {
        "name": "UNIV OF TEXAS TX UNIV REVENUES",
        "value": "1068830.90",
        "weight": "0.00460973",
        "shared": false
      },
      {
        "name": "District of Columbia, Series 2024 A, GO Bonds",
        "value": "1056792.52",
        "weight": "0.00455781",
        "shared": false
      },
      {
        "name": "Commonwealth Financing Authority, Series 2018, RB",
        "value": "1051961.10",
        "weight": "0.00453697",
        "shared": false
      },
      {
        "name": "Harris County-Houston Sports Authority, Series 2024A",
        "value": "1044312.60",
        "weight": "0.00450398",
        "shared": false
      },
      {
        "name": "Chicago Transit Authority Sales Tax Receipts Fund, Series 2024A",
        "value": "1030147.97",
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      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-040051",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/2018846/000141036826040051/0001410368-26-040051-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000894189-26-012794",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1141819/000089418926012794/0000894189-26-012794-index.htm"
    }
  ]
}