{
  "page": "compare",
  "query": {
    "a": "AMACX",
    "b": "VMATX"
  },
  "retrieved_at": "2026-07-07T19:24:35+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": "AB Massachusetts Portfolio",
    "ticker": "AMACX",
    "slug": "AMACX",
    "series_id": "S000010355",
    "html_url": "https://fundwatcher.app/funds/AMACX/"
  },
  "fund_b": {
    "name": "VANGUARD MASSACHUSETTS TAX-EXEMPT FUND",
    "ticker": "VMATX",
    "slug": "VMATX",
    "series_id": "S000002870",
    "html_url": "https://fundwatcher.app/funds/VMATX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.08089703884831848885306363584",
    "coverage_b_by_a": "0.08089703884831848885306363585",
    "shared_count": 42,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "QUINCY MA",
        "value": "7329477.65",
        "weight": "0.02826054",
        "shared": true
      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
        "value": "7154974.97",
        "weight": "0.02758770",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
        "value": "5607897.34",
        "weight": "0.02162258",
        "shared": false
      },
      {
        "name": "Massachusetts Water Resources Authority",
        "value": "5567857.90",
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      },
      {
        "name": "MASSACHUSETTS ST MAS 12/54 FIXED 5",
        "value": "5246557.00",
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      },
      {
        "name": "MASSACHUSETTS ST",
        "value": "5173718.50",
        "weight": "0.01994850",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST PORT AUTH REGD B/E AMT 5.00000000",
        "value": "5066577.50",
        "weight": "0.01953539",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST PORT AUTH",
        "value": "5020833.45",
        "weight": "0.01935901",
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      },
      {
        "name": "MA ST DEV FIN AGY",
        "value": "4318442.40",
        "weight": "0.01665078",
        "shared": true
      },
      {
        "name": "MBTA SLS TAX 5.25% 7/1/2053",
        "value": "4251004.40",
        "weight": "0.01639076",
        "shared": true
      },
      {
        "name": "MA ST",
        "value": "4248466.80",
        "weight": "0.01638097",
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      },
      {
        "name": "MASSACHUSETTS ST PORT AUTH",
        "value": "4237713.60",
        "weight": "0.01633951",
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      },
      {
        "name": "MBTA SLS TAX 5.25% 7/1/55",
        "value": "3758543.25",
        "weight": "0.01449195",
        "shared": true
      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY R REGD B/E 5.00000000",
        "value": "3756941.71",
        "weight": "0.01448578",
        "shared": true
      },
      {
        "name": "MASS DEVEL FIN 5% 7/1/2050",
        "value": "3558042.53",
        "weight": "0.01371888",
        "shared": false
      },
      {
        "name": "QUINCY MA",
        "value": "3502745.59",
        "weight": "0.01350567",
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      },
      {
        "name": "PRG MEDFORD PROPERTIES INC 5.25% 06-01-55",
        "value": "3401821.15",
        "weight": "0.01311653",
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      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
        "value": "3323480.65",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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        "weight": "0.01272500",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      },
      {
        "name": "MASS CMNWLTH-B",
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      {
        "name": "MA ST TRANS REV 5% 6/1/52",
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      {
        "name": "MASSACHUSETTS ST BAY TRANSPRTN MASTRN 07/50 FIXED 5",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      {
        "name": "MASS DEVEL FIN 5% 7/1/2053",
        "value": "3020805.90",
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      },
      {
        "name": "U.S. Treasury Bills",
        "value": "2986427.64",
        "weight": "0.01151488",
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      {
        "name": "SUFFOLK UNIVERSITY 5.25% 07-01-55",
        "value": "2985330.30",
        "weight": "0.01151065",
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      },
      {
        "name": "MASSACHUSETTS ST PORT AUTH",
        "value": "2630395.00",
        "weight": "0.01014211",
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      {
        "name": "UNIV OF MASSACHUSETTS MA BLDG AUTH REVENUE",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      {
        "name": "MASSACHUSETTS ST",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      {
        "name": "MA ST DEV FIN AGY-M",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      },
      {
        "name": "Territory of Guam, Series F",
        "value": "2242394.55",
        "weight": "0.00864608",
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      },
      {
        "name": "MASSACHUSETTS ST",
        "value": "2181310.00",
        "weight": "0.00841056",
        "shared": true
      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY R MASDEV 07/54 FIXED OID 5",
        "value": "2160222.24",
        "weight": "0.00832925",
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      },
      {
        "name": "MASSACHUSETTS ST",
        "value": "2155022.40",
        "weight": "0.00830920",
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      },
      {
        "name": "MASSACHUSETTS ST PORT AUTH SPL FACS REVENUE",
        "value": "2136257.40",
        "weight": "0.00823685",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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        "weight": "0.00818229",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
        "value": "2108237.46",
        "weight": "0.00812881",
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      {
        "name": "MASSACHUSETTS ST MAS 10/52 FIXED 5",
        "value": "2085703.26",
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      {
        "name": "WORCESTER MA",
        "value": "2075932.04",
        "weight": "0.00800425",
        "shared": false
      },
      {
        "name": "MA ST TRANS REV 5% 6/1/50",
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        "weight": "0.00800298",
        "shared": true
      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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        "weight": "0.00798092",
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      {
        "name": "MA ST DFA 5% 7/1/39",
        "value": "2058526.17",
        "weight": "0.00793714",
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      },
      {
        "name": "MASSACHUSETTS ST BAY TRANSPRTN AUTH SALES TAX REVENUE",
        "value": "2056412.80",
        "weight": "0.00792899",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST HLTH & EDUCTNL FACS AUTH REVENUE",
        "value": "2054407.68",
        "weight": "0.00792126",
        "shared": true
      },
      {
        "name": "QUINCY MA",
        "value": "2030217.40",
        "weight": "0.00782798",
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      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY R REGD B/E 5.00000000",
        "value": "2011219.80",
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    ],
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        "name": "MA ST DEV FIN AGY-A-1",
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      },
      {
        "name": "MA ST 5% 1/1/54",
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      {
        "name": "QUINCY MA",
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      {
        "name": "MA ST DEV FIN AGY-A-2",
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      {
        "name": "MA ST DEPT TRANSPRTN",
        "value": "36300000.00",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      {
        "name": "MASSACHUSETTS ST REGD B/E 5.25000000",
        "value": "29117361.83",
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      },
      {
        "name": "MASSACHUSETTS ST",
        "value": "28403171.10",
        "weight": "0.00801036",
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      },
      {
        "name": "MASS DEVEL FIN(BOSTON COLLEGE) 5% 7/1/55",
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        "weight": "0.00761051",
        "shared": true
      },
      {
        "name": "MASSACHUSETTS ST TRANSPRTN FUND REVENUE",
        "value": "25674610.00",
        "weight": "0.00724084",
        "shared": false
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY S REGD V/R B/E 5.00000000",
        "value": "25127686.08",
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      },
      {
        "name": "MASSACHUSETTS ST",
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      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY R REGD B/E 5.00000000",
        "value": "23077742.12",
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      {
        "name": "MA ST DEV-VAR-K2-REMK",
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        "name": "MA ST HSG FIN A 3.75% 6/1/2029",
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      },
      {
        "name": "MASS CMNWLTH-A",
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      },
      {
        "name": "Massachusetts Development Finance Agency, Series 2024 U-1",
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      {
        "name": "TNDR OPT-FLTRS-8103",
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      {
        "name": "MASS DEVEL FIN 4% 7/1/2044",
        "value": "19019154.59",
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      },
      {
        "name": "Massachusetts Health & Educational Facilities Authority",
        "value": "18700000.00",
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      },
      {
        "name": "MA ST DEV FIN AGY-N",
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      {
        "name": "MASSACHUSETTS ST",
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      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      },
      {
        "name": "Massachusetts (Commonwealth of), Series 2024 E, GO Bonds",
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      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      {
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        "value": "16494454.05",
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      {
        "name": "Massachusetts (Commonwealth of), Series 2024 B, Ref. GO Bonds",
        "value": "16444127.32",
        "weight": "0.00463763",
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      },
      {
        "name": "NATIONAL SENIOR COMMUNITIES INC OBLIGATED GROUP 5.125% 11-15-46",
        "value": "16107479.07",
        "weight": "0.00454269",
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      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY R MASSACHUSETTS DEVELOPMENT FINANCE AGENCY",
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      },
      {
        "name": "MA ST DEV FIN AGY-M",
        "value": "14561098.49",
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      },
      {
        "name": "MA WTR RES AUTH-C-REF",
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      },
      {
        "name": "MA DEV FIN AGY-K",
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      {
        "name": "MASSACHUSETTS ST SCH BLDG AUTH SALES TAX REVENUE",
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      {
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      },
      {
        "name": "Massachusetts Development Finance Agency, Series U-6-E",
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      {
        "name": "MASSACHUSETTS ST HLTH & EDUCTNL FACS AUTH REVENUE",
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      {
        "name": "Massachusetts State, General Obligation Bonds, Consolidated Series 2023D",
        "value": "14191341.83",
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      {
        "name": "Massachusetts Housing Finance Agency",
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      {
        "name": "MA DEV FIN-MERRIMACK",
        "value": "14016798.12",
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      },
      {
        "name": "E LONGMEADOW TWN",
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      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
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      {
        "name": "MBTA SLS TAX 5.25% 7/1/2053",
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      },
      {
        "name": "MA ST TRANS REV 5% 6/1/55",
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      },
      {
        "name": "MASSACHUSETTS ST-D",
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      },
      {
        "name": "MA ST 5% 11/1/2045",
        "value": "12858136.36",
        "weight": "0.00362629",
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      },
      {
        "name": "TRUSTEES OF BOSTON UNIVERSITY 4.0% 10-01-48",
        "value": "12789039.37",
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      },
      {
        "name": "MASSACHUSETTS ST MAS 10/46 FIXED 5",
        "value": "12490885.16",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-040406",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/899774/000141036826040406/0001410368-26-040406-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001070414-26-000032",
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      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1070414/000107041426000032/0001070414-26-000032-index.htm"
    }
  ]
}