{
  "page": "compare",
  "query": {
    "a": "MCCAX",
    "b": "PRXCX"
  },
  "retrieved_at": "2026-07-07T17:35:47+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 California Municipal Bond Fund",
    "ticker": "MCCAX",
    "slug": "MCCAX",
    "series_id": "S000002530",
    "html_url": "https://fundwatcher.app/funds/MCCAX/"
  },
  "fund_b": {
    "name": "T. Rowe Price California Tax-Free Bond Fund",
    "ticker": "PRXCX",
    "slug": "PRXCX",
    "series_id": "S000059424",
    "html_url": "https://fundwatcher.app/funds/PRXCX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1106671510985965990773279314",
    "coverage_b_by_a": "0.1106671510985965990773279315",
    "shared_count": 53,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "MFS Institutional Money Market Portfolio, Class A",
        "value": "33164381.09",
        "weight": "0.04157409",
        "shared": false
      },
      {
        "name": "California Community Choice Financing Authority, Series C",
        "value": "9338921.10",
        "weight": "0.01170705",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "8035752.75",
        "weight": "0.01007343",
        "shared": true
      },
      {
        "name": "LOS ANGELES HSG-A",
        "value": "7919212.00",
        "weight": "0.00992734",
        "shared": false
      },
      {
        "name": "CALIFORNIA MUNICIPAL FINANCE AUTHORITY",
        "value": "7897030.95",
        "weight": "0.00989953",
        "shared": false
      },
      {
        "name": "OAKLAND UNIF SCH D-A",
        "value": "7361357.50",
        "weight": "0.00922802",
        "shared": true
      },
      {
        "name": "Inglewood Joint Powers Authority, Series 2025",
        "value": "6330975.60",
        "weight": "0.00793636",
        "shared": false
      },
      {
        "name": "California Housing Finance Agency, Series 2026 ISSUE A",
        "value": "5891413.20",
        "weight": "0.00738534",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST HLTH FACS FING AUTH REVENUE",
        "value": "5774298.45",
        "weight": "0.00723852",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "5409991.00",
        "weight": "0.00678184",
        "shared": true
      },
      {
        "name": "San Francisco (City & County of), CA Airport Commission (San Francisco International Airport), Second Series 2023 C, Ref. RB",
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        "weight": "0.00669407",
        "shared": true
      },
      {
        "name": "San Francisco Community College District, Series B",
        "value": "5309297.00",
        "weight": "0.00665561",
        "shared": false
      },
      {
        "name": "OAKLAND-D",
        "value": "5297019.50",
        "weight": "0.00664022",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Green Bonds), Series 2023 C, RB",
        "value": "5289029.00",
        "weight": "0.00663020",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Green Bonds), Series 2023, RB",
        "value": "5232771.50",
        "weight": "0.00655968",
        "shared": false
      },
      {
        "name": "IRVINE CMNTY FACS DT",
        "value": "5226065.50",
        "weight": "0.00655127",
        "shared": false
      },
      {
        "name": "San Diego County Regional Airport Authority, Series 2025 B",
        "value": "5203924.00",
        "weight": "0.00652352",
        "shared": true
      },
      {
        "name": "SAN LUIS OBISPO PUBLIC FINANCI SLOFIN 12/53 FIXED 5",
        "value": "5185679.00",
        "weight": "0.00650064",
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      },
      {
        "name": "CALIFORNIA ST HLTH FACS FING AUTH REVENUE",
        "value": "5167421.00",
        "weight": "0.00647776",
        "shared": false
      },
      {
        "name": "PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000",
        "value": "5082159.40",
        "weight": "0.00637088",
        "shared": true
      },
      {
        "name": "Mt. San Antonio Community College District, Series 2013A",
        "value": "5075566.50",
        "weight": "0.00636261",
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      },
      {
        "name": "CA STWD(ENLOE HLTH SYST)/AGM 5.38% 8/15/57",
        "value": "5057092.00",
        "weight": "0.00633945",
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      },
      {
        "name": "CA MUNI FIN AUTH-A",
        "value": "5004730.50",
        "weight": "0.00627381",
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      },
      {
        "name": "California Housing Finance Agency, Series 2024 ISSUE DD",
        "value": "4960470.00",
        "weight": "0.00621833",
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      },
      {
        "name": "CALIFORNIA HSG FIN AGY LTD OBLIG MF HSG REVENUE",
        "value": "4913372.00",
        "weight": "0.00615929",
        "shared": false
      },
      {
        "name": "CALIFORNIA HSG FIN AGY LTD OBLIG MF HSG REVENUE",
        "value": "4913372.00",
        "weight": "0.00615929",
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      },
      {
        "name": "CALIFORNIA HSG FIN AGY LTD OBLIG MF HSG REVENUE",
        "value": "4911349.50",
        "weight": "0.00615675",
        "shared": true
      },
      {
        "name": "North Lake Tahoe Public Financing Authority 5.50% 12/01/2047",
        "value": "4779932.79",
        "weight": "0.00599201",
        "shared": false
      },
      {
        "name": "SANTA CLARA CY 3% 5/1/2039",
        "value": "4749264.98",
        "weight": "0.00595357",
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      {
        "name": "New Hampshire Business Finance Authority, Series 4, Class A",
        "value": "4745309.41",
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      {
        "name": "Clovis Unified School District, Series C",
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      {
        "name": "Alameda Corridor Transportation Authority, Series C",
        "value": "4657024.28",
        "weight": "0.00583794",
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      {
        "name": "UNIV OF CA REGENTS -P",
        "value": "4520440.00",
        "weight": "0.00566672",
        "shared": false
      },
      {
        "name": "LOS ANGELES DEPT ARPT",
        "value": "4460673.00",
        "weight": "0.00559179",
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      {
        "name": "CALIFORNIA ST MUNI FIN AUTH RE CASFIN 01/42 FIXED 5",
        "value": "4318553.63",
        "weight": "0.00541364",
        "shared": false
      },
      {
        "name": "CALIFORNIA CMNTY CHOICE FING A REGD B/E 5.25000000",
        "value": "4290378.80",
        "weight": "0.00537832",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "4284094.80",
        "weight": "0.00537044",
        "shared": true
      },
      {
        "name": "CA ST UNIV-A-REF",
        "value": "4276758.00",
        "weight": "0.00536124",
        "shared": false
      },
      {
        "name": "LOS ANGELES CA DEPT OF ARPTS ARPT REVENUE",
        "value": "4264779.42",
        "weight": "0.00534623",
        "shared": false
      },
      {
        "name": "San Francisco (City & County of), CA Airport Commission (San Francisco International Airport), Second Series 2024, Ref. RB",
        "value": "4256294.40",
        "weight": "0.00533559",
        "shared": false
      },
      {
        "name": "Ceres Unified School District, Series 2025A",
        "value": "4169338.00",
        "weight": "0.00522658",
        "shared": false
      },
      {
        "name": "Los Angeles Department of Airports, California, Revenue Bonds, Los Angeles International Airport, Refunding Subordinate Green Series 2025A",
        "value": "4167433.20",
        "weight": "0.00522420",
        "shared": false
      },
      {
        "name": "Kerman Public Financing Authority, Series 2025",
        "value": "4151228.00",
        "weight": "0.00520388",
        "shared": false
      },
      {
        "name": "San Francisco (City & County of), CA Airport Commission (San Francisco International Airport), Series 2016, RB",
        "value": "4000098.00",
        "weight": "0.00501443",
        "shared": true
      },
      {
        "name": "CA ST MFA COP 5.25% 11/1/2052",
        "value": "3994617.20",
        "weight": "0.00500756",
        "shared": false
      },
      {
        "name": "CA MUNI FIN AUTH-A",
        "value": "3992080.80",
        "weight": "0.00500438",
        "shared": false
      },
      {
        "name": "BEVERLY HILLS USD CAB",
        "value": "3985423.87",
        "weight": "0.00499603",
        "shared": false
      },
      {
        "name": "REPUBLIC SERVICES INC (MPT) 3.875% 03-01-54",
        "value": "3972416.40",
        "weight": "0.00497973",
        "shared": false
      },
      {
        "name": "INDIO PUB FING AUTH-A",
        "value": "3933807.70",
        "weight": "0.00493133",
        "shared": false
      },
      {
        "name": "GOLDEN ST TOBACCO SECURITIZATI REGD B/E 5.00000000",
        "value": "3914510.80",
        "weight": "0.00490714",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "9900468.98",
        "weight": "0.01268154",
        "shared": true
      },
      {
        "name": "UNIV OF CA -REF-O",
        "value": "9796616.60",
        "weight": "0.01254851",
        "shared": false
      },
      {
        "name": "Los Angeles Unified School District (Election of 2024), Series 2025, GO Bonds",
        "value": "9179487.90",
        "weight": "0.01175803",
        "shared": false
      },
      {
        "name": "KAISER FOUNDATION HOSPITALS 5.0% 11-01-47",
        "value": "9002205.60",
        "weight": "0.01153095",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "8850948.00",
        "weight": "0.01133721",
        "shared": true
      },
      {
        "name": "CEDARS-SINAI MEDICAL CENTER OBLIGATED GROUP 3.0% 08-15-51",
        "value": "8777929.31",
        "weight": "0.01124368",
        "shared": false
      },
      {
        "name": "SACRAMENTO METROPOLITAN FIRE DISTRICT",
        "value": "7896655.04",
        "weight": "0.01011485",
        "shared": false
      },
      {
        "name": "UNIV OF CA REGENTS -P",
        "value": "7883392.23",
        "weight": "0.01009786",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST E 5.25% 11/1/54",
        "value": "7502490.80",
        "weight": "0.00960996",
        "shared": false
      },
      {
        "name": "PUERTO RICO SALES TAX FING COR REGD OID B/E 4.75000000",
        "value": "7441628.34",
        "weight": "0.00953200",
        "shared": true
      },
      {
        "name": "CHINO VY USD CA 3.375% 8/1/2050",
        "value": "6671385.60",
        "weight": "0.00854540",
        "shared": false
      },
      {
        "name": "CENTRL VLY CA ENERGY AUTH COMM REGD V/R B/E 5.00000000",
        "value": "6659119.80",
        "weight": "0.00852969",
        "shared": true
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "6233180.40",
        "weight": "0.00798410",
        "shared": false
      },
      {
        "name": "San Jose (City of), CA, Series 2017 A, Ref. RB",
        "value": "6195042.18",
        "weight": "0.00793525",
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      },
      {
        "name": "CA MUNI FIN AUTH-A",
        "value": "6182857.80",
        "weight": "0.00791964",
        "shared": false
      },
      {
        "name": "California Community Choice Financing Authority, Series 2023 E-1",
        "value": "5948242.30",
        "weight": "0.00761912",
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      },
      {
        "name": "Santa Barbara Community College District, Series A",
        "value": "5810486.50",
        "weight": "0.00744267",
        "shared": false
      },
      {
        "name": "San Diego County Regional Airport Authority, Series 2025 B",
        "value": "5757844.11",
        "weight": "0.00737524",
        "shared": true
      },
      {
        "name": "CALIFORNIA ST MUNI FIN AUTH REVENUE",
        "value": "5591075.05",
        "weight": "0.00716162",
        "shared": false
      },
      {
        "name": "KERN COMMUNITY COLLEGE DISTRICT",
        "value": "5559531.53",
        "weight": "0.00712122",
        "shared": false
      },
      {
        "name": "Los Angeles County Public Works Financing Authority, Series J",
        "value": "5512556.00",
        "weight": "0.00706105",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST HLTH FACS FING AUTH REVENUE",
        "value": "5441813.85",
        "weight": "0.00697044",
        "shared": false
      },
      {
        "name": "San Francisco City & County Airport Comm-San Francisco International Airport, Series 2025D",
        "value": "5379325.00",
        "weight": "0.00689039",
        "shared": false
      },
      {
        "name": "Los Angeles Department of Airports, California, Revenue Bonds, Los Angeles International Airport, Refunding Subordinate Green Series 2025A",
        "value": "5372791.50",
        "weight": "0.00688202",
        "shared": false
      },
      {
        "name": "CHINO VLY SD-CIBS-D",
        "value": "5323400.50",
        "weight": "0.00681876",
        "shared": false
      },
      {
        "name": "CITY OF LOS ANGELES DEPARTMENT OF AIRPORTS",
        "value": "5246681.66",
        "weight": "0.00672049",
        "shared": false
      },
      {
        "name": "California (State of) Infrastructure & Economic Development Bank (Los Angeles County Museum of Natural History Foundation), Series 2020, Ref. RB",
        "value": "5103830.25",
        "weight": "0.00653751",
        "shared": false
      },
      {
        "name": "SAN FRANCISCO CITY & COUNTY AIRPORT COMM-SAN FRANCISCO INTERNATIONAL AIRPORT",
        "value": "5093927.50",
        "weight": "0.00652483",
        "shared": false
      },
      {
        "name": "San Francisco (City & County of), CA Airport Commission (San Francisco International Airport), Series 2016, RB",
        "value": "5005317.50",
        "weight": "0.00641133",
        "shared": true
      },
      {
        "name": "San Francisco (City & County of), CA Airport Commission (San Francisco International Airport), Second Series 2023 C, Ref. RB",
        "value": "4895681.85",
        "weight": "0.00627089",
        "shared": true
      },
      {
        "name": "SACRAMENTO TRANS-A",
        "value": "4836848.16",
        "weight": "0.00619553",
        "shared": false
      },
      {
        "name": "CA STWD 5.50% 12/1/2058",
        "value": "4835397.88",
        "weight": "0.00619368",
        "shared": false
      },
      {
        "name": "OAKLAND UNIF SCH D-A",
        "value": "4833320.40",
        "weight": "0.00619101",
        "shared": true
      },
      {
        "name": "CALIFORNIA ST MUNI FIN AUTH STUDENT HSG REVENUE",
        "value": "4830220.25",
        "weight": "0.00618704",
        "shared": false
      },
      {
        "name": "San Diego County Regional Airport Authority, Senior Private Activity, Series 2023B",
        "value": "4785874.17",
        "weight": "0.00613024",
        "shared": false
      },
      {
        "name": "California (State of) Public Finance Authority (Hoag Memorial Hospital), Series 2022 A, RB",
        "value": "4772899.50",
        "weight": "0.00611362",
        "shared": true
      },
      {
        "name": "INLAND VLY CA DEV AGY SUCCESSOR AGY TAX ALLOCATION",
        "value": "4640666.76",
        "weight": "0.00594424",
        "shared": false
      },
      {
        "name": "SUNNYVALE FING AUTH",
        "value": "4624036.85",
        "weight": "0.00592294",
        "shared": false
      },
      {
        "name": "RAVENSWOOD CITY SCHOOL DISTRICT/CA",
        "value": "4560293.34",
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        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "4484615.26",
        "weight": "0.00574436",
        "shared": true
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "4479761.20",
        "weight": "0.00573814",
        "shared": true
      },
      {
        "name": "CA ST UNIV TRUSTEES-A",
        "value": "4412829.60",
        "weight": "0.00565241",
        "shared": false
      },
      {
        "name": "CA MUNI FIN AUTH",
        "value": "4364425.93",
        "weight": "0.00559041",
        "shared": true
      },
      {
        "name": "IRVINE FACS FING-A",
        "value": "4332659.28",
        "weight": "0.00554972",
        "shared": true
      },
      {
        "name": "NRTHRN CA ENRGY",
        "value": "4310172.00",
        "weight": "0.00552091",
        "shared": false
      },
      {
        "name": "GOLDEN ST TOBACCO SECURITIZATI REGD ZCP OID B/E 0.00000000",
        "value": "4264620.00",
        "weight": "0.00546256",
        "shared": false
      },
      {
        "name": "San Francisco City & County Airport Comm-San Francisco International Airport, Series 2024 A",
        "value": "4233124.80",
        "weight": "0.00542222",
        "shared": true
      },
      {
        "name": "CALIFORNIA ST INFRASTRUCTURE & ECON DEV BANK NATIONAL CHARTR",
        "value": "4201429.37",
        "weight": "0.00538162",
        "shared": false
      },
      {
        "name": "CA SCH FIN-REV-REF",
        "value": "4187789.49",
        "weight": "0.00536415",
        "shared": false
      },
      {
        "name": "FULLERTON JOINT UNION HIGH SCHOOL DISTRICT",
        "value": "4182803.26",
        "weight": "0.00535776",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-011424",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/751656/000207169126011424/0002071691-26-011424-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001099263-26-004391",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/795384/000109926326004391/0001099263-26-004391-index.htm"
    }
  ]
}