{
  "page": "compare",
  "query": {
    "a": "MPMSX",
    "b": "MFARX"
  },
  "retrieved_at": "2026-07-07T17:48:24+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 Mississippi Municipal Bond Fund",
    "ticker": "MPMSX",
    "slug": "MPMSX",
    "series_id": "S000002535",
    "html_url": "https://fundwatcher.app/funds/MPMSX/"
  },
  "fund_b": {
    "name": "MFS Arkansas Municipal Bond Fund",
    "ticker": "MFARX",
    "slug": "MFARX",
    "series_id": "S000002529",
    "html_url": "https://fundwatcher.app/funds/MFARX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1276252003346535255171680429",
    "coverage_b_by_a": "0.1276252003346535255171680429",
    "shared_count": 53,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "Jackson County Utility Authority",
        "value": "2000631.40",
        "weight": "0.03277370",
        "shared": false
      },
      {
        "name": "Mississippi Home Corp., Series 2024A",
        "value": "1688631.00",
        "weight": "0.02766261",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank",
        "value": "1325279.25",
        "weight": "0.02171030",
        "shared": false
      },
      {
        "name": "MS MDCEDU 5 06/01/2042",
        "value": "1261411.13",
        "weight": "0.02066403",
        "shared": false
      },
      {
        "name": "Medical Center Educational Building Corp.",
        "value": "1254090.13",
        "weight": "0.02054410",
        "shared": false
      },
      {
        "name": "MS DEV BK 5.25% 1/1/2034",
        "value": "1110241.00",
        "weight": "0.01818761",
        "shared": false
      },
      {
        "name": "W RANKIN UTIL AUTH",
        "value": "1042610.40",
        "weight": "0.01707971",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank, Series 2025",
        "value": "1037956.10",
        "weight": "0.01700346",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank",
        "value": "1034851.30",
        "weight": "0.01695260",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank",
        "value": "1034582.33",
        "weight": "0.01694819",
        "shared": false
      },
      {
        "name": "PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000",
        "value": "1032402.75",
        "weight": "0.01691249",
        "shared": true
      },
      {
        "name": "Mississippi Development Bank, Series 2024",
        "value": "1021683.20",
        "weight": "0.01673688",
        "shared": false
      },
      {
        "name": "State of Mississippi, Series 2024",
        "value": "1020528.20",
        "weight": "0.01671796",
        "shared": false
      },
      {
        "name": "State of Mississippi, Series 2018A",
        "value": "1014675.70",
        "weight": "0.01662209",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank",
        "value": "1006948.90",
        "weight": "0.01649551",
        "shared": false
      },
      {
        "name": "MS MSSDEV 5 07/01/2048",
        "value": "1003922.30",
        "weight": "0.01644593",
        "shared": false
      },
      {
        "name": "MISSISSIPPI ST HOME CORP SF MTGE REVENUE",
        "value": "989126.70",
        "weight": "0.01620355",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank",
        "value": "972746.80",
        "weight": "0.01593522",
        "shared": false
      },
      {
        "name": "Mississippi Home Corp.",
        "value": "955213.90",
        "weight": "0.01564801",
        "shared": false
      },
      {
        "name": "MS HOSP 4% 1/1/2040",
        "value": "954595.70",
        "weight": "0.01563788",
        "shared": false
      },
      {
        "name": "Medical Center Educational Building Corp., Series 2017, Ref. RB",
        "value": "913079.10",
        "weight": "0.01495777",
        "shared": false
      },
      {
        "name": "MS MSSSFH 4.05 12/01/2047",
        "value": "909184.20",
        "weight": "0.01489396",
        "shared": false
      },
      {
        "name": "Medical Center Educational Building Corp., Series 2023, RB",
        "value": "889611.30",
        "weight": "0.01457333",
        "shared": false
      },
      {
        "name": "Mississippi Home Corp.",
        "value": "822064.50",
        "weight": "0.01346680",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST BAY TRANSPRTN AUTH SALES TAX REVENUE",
        "value": "815068.05",
        "weight": "0.01335218",
        "shared": true
      },
      {
        "name": "Warren County, Mississippi, Certificates of Participation, Lease Purchase Jail Project Series 2023",
        "value": "806926.35",
        "weight": "0.01321881",
        "shared": false
      },
      {
        "name": "Warren County, Mississippi, Certificates of Participation, Lease Purchase Jail Project Series 2023",
        "value": "797703.15",
        "weight": "0.01306772",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank, Series 2024",
        "value": "765382.50",
        "weight": "0.01253825",
        "shared": false
      },
      {
        "name": "MS DEV BK SPL/AGM 6.88% 12/1/40",
        "value": "763027.50",
        "weight": "0.01249967",
        "shared": false
      },
      {
        "name": "MS UNIV EDU CORP-A",
        "value": "761849.03",
        "weight": "0.01248037",
        "shared": false
      },
      {
        "name": "MS ST HOME SF 4.8% 12/1/45",
        "value": "754596.08",
        "weight": "0.01236155",
        "shared": false
      },
      {
        "name": "MISSISSIPPI ST HOME CORP SF MT REGD B/E GNMA/FN 4.80000000",
        "value": "749706.98",
        "weight": "0.01228146",
        "shared": false
      },
      {
        "name": "San Diego Unified School District, Series 2010C",
        "value": "747424.99",
        "weight": "0.01224408",
        "shared": false
      },
      {
        "name": "Mississippi Home Corp., Series 2024 C",
        "value": "747109.80",
        "weight": "0.01223891",
        "shared": false
      },
      {
        "name": "Mississippi Home Corp., Series 2024 E",
        "value": "742496.25",
        "weight": "0.01216333",
        "shared": false
      },
      {
        "name": "MS MHSG 4.55% 4/1/2042",
        "value": "736179.50",
        "weight": "0.01205986",
        "shared": false
      },
      {
        "name": "MS MSSDEV 4 06/01/2044",
        "value": "719826.08",
        "weight": "0.01179196",
        "shared": false
      },
      {
        "name": "State of Mississippi",
        "value": "714285.34",
        "weight": "0.01170119",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank",
        "value": "700880.10",
        "weight": "0.01148159",
        "shared": false
      },
      {
        "name": "State of Mississippi, Series 2024",
        "value": "698163.60",
        "weight": "0.01143709",
        "shared": false
      },
      {
        "name": "Mississippi State University Educational Building Corp., Series 2024A",
        "value": "662858.63",
        "weight": "0.01085874",
        "shared": false
      },
      {
        "name": "S E ENERGY COOP DT",
        "value": "602226.63",
        "weight": "0.00986548",
        "shared": true
      },
      {
        "name": "University of Mississippi Educational Building Corp., Series 2017 , Ref. RB",
        "value": "583536.60",
        "weight": "0.00955931",
        "shared": false
      },
      {
        "name": "Mississippi Home Corp., Series 2026A",
        "value": "527590.00",
        "weight": "0.00864281",
        "shared": false
      },
      {
        "name": "MFS Institutional Money Market Portfolio, Class A",
        "value": "526050.32",
        "weight": "0.00861759",
        "shared": true
      },
      {
        "name": "Little Rock School District",
        "value": "524720.56",
        "weight": "0.00859580",
        "shared": true
      },
      {
        "name": "Mississippi Development Bank, Series 2025",
        "value": "523145.20",
        "weight": "0.00857000",
        "shared": false
      },
      {
        "name": "WARREN CO-A-REF-REMK",
        "value": "515369.10",
        "weight": "0.00844261",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank, Special Obligation Bonds, Lamar County School District Series 2025",
        "value": "511065.05",
        "weight": "0.00837210",
        "shared": false
      },
      {
        "name": "Mississippi Development Bank, Series 2025",
        "value": "511065.05",
        "weight": "0.00837210",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "Little Rock, Arkansas, Hotel and Restaurant Gross Receipts Tax Bonds, Series 2014",
        "value": "3005557.50",
        "weight": "0.02168502",
        "shared": false
      },
      {
        "name": "Springdale Public Facilities Board",
        "value": "2831902.94",
        "weight": "0.02043211",
        "shared": false
      },
      {
        "name": "Arkansas Development Finance Authority",
        "value": "2609958.88",
        "weight": "0.01883079",
        "shared": false
      },
      {
        "name": "Arkansas State University",
        "value": "2502573.25",
        "weight": "0.01805600",
        "shared": false
      },
      {
        "name": "Arkansas Development Finance Authority",
        "value": "2371896.79",
        "weight": "0.01711317",
        "shared": false
      },
      {
        "name": "PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000",
        "value": "2284404.98",
        "weight": "0.01648192",
        "shared": true
      },
      {
        "name": "City of Batesville, Series 2024B",
        "value": "2113140.38",
        "weight": "0.01524625",
        "shared": false
      },
      {
        "name": "University of Arkansas, Series 2022, RB",
        "value": "2066126.20",
        "weight": "0.01490705",
        "shared": false
      },
      {
        "name": "University of Arkansas (Fayetteville Campus), Series 2022 A, RB",
        "value": "2059805.60",
        "weight": "0.01486144",
        "shared": false
      },
      {
        "name": "City of Fayetteville",
        "value": "2003722.00",
        "weight": "0.01445680",
        "shared": false
      },
      {
        "name": "Arkansas (State of) Development Finance Authority (Baptist Memorial Health), Series 2020, Ref. RB",
        "value": "1997637.60",
        "weight": "0.01441290",
        "shared": false
      },
      {
        "name": "North Little Rock School District No. 1",
        "value": "1980367.60",
        "weight": "0.01428830",
        "shared": false
      },
      {
        "name": "AR ST HOSP REV 5% 2/1/2038",
        "value": "1905304.99",
        "weight": "0.01374673",
        "shared": false
      },
      {
        "name": "SPRINGDALE-B",
        "value": "1835926.60",
        "weight": "0.01324616",
        "shared": false
      },
      {
        "name": "Texarkana Public Facilities Board, Series 2025",
        "value": "1819460.00",
        "weight": "0.01312736",
        "shared": false
      },
      {
        "name": "UNIV OF ARKANSAS AR UNIV REVENUE",
        "value": "1760236.54",
        "weight": "0.01270006",
        "shared": false
      },
      {
        "name": "City of Hot Springs AR Waterworks Revenue",
        "value": "1702240.93",
        "weight": "0.01228162",
        "shared": false
      },
      {
        "name": "Conway County Regional Water Distribution District, Series 2024B",
        "value": "1693278.54",
        "weight": "0.01221696",
        "shared": false
      },
      {
        "name": "Arkansas Development Finance Authority",
        "value": "1645253.00",
        "weight": "0.01187046",
        "shared": false
      },
      {
        "name": "ARKANSAS ST DEV FIN AUTH SF MT REGD B/E GNMA/FN 5.50000000",
        "value": "1612569.19",
        "weight": "0.01163465",
        "shared": false
      },
      {
        "name": "University of Arkansas",
        "value": "1543819.50",
        "weight": "0.01113862",
        "shared": false
      },
      {
        "name": "ARKANSAS ST DEV FIN AUTH SF MTGE REVENUE",
        "value": "1533609.29",
        "weight": "0.01106495",
        "shared": false
      },
      {
        "name": "Conway County Regional Water Distribution District, Series 2024B",
        "value": "1452190.52",
        "weight": "0.01047752",
        "shared": false
      },
      {
        "name": "City of Centerton, Series 2024",
        "value": "1439092.65",
        "weight": "0.01038302",
        "shared": false
      },
      {
        "name": "City of Hot Springs",
        "value": "1409106.15",
        "weight": "0.01016666",
        "shared": false
      },
      {
        "name": "City of Osceola, Series 2023A",
        "value": "1389000.75",
        "weight": "0.01002160",
        "shared": false
      },
      {
        "name": "ARKANSAS ST DEV FIN AUTH REVEN REGD B/E 5.00000000",
        "value": "1362750.29",
        "weight": "0.00983221",
        "shared": false
      },
      {
        "name": "Arkansas Development Finance Authority, Single Family Mortgage Revenue Bonds, Mortgage-Backed Securities Program, Series 2025A",
        "value": "1305168.72",
        "weight": "0.00941676",
        "shared": false
      },
      {
        "name": "El Dorado Special School District No. 15, Series A",
        "value": "1276641.00",
        "weight": "0.00921093",
        "shared": false
      },
      {
        "name": "City of Osceola, Series 2024",
        "value": "1235690.82",
        "weight": "0.00891548",
        "shared": false
      },
      {
        "name": "County of Phillips",
        "value": "1158569.80",
        "weight": "0.00835905",
        "shared": false
      },
      {
        "name": "City of Conway",
        "value": "1150623.99",
        "weight": "0.00830172",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST BAY TRANSPRTN AUTH SALES TAX REVENUE",
        "value": "1086757.40",
        "weight": "0.00784093",
        "shared": true
      },
      {
        "name": "S E ENERGY COOP DT",
        "value": "1080781.72",
        "weight": "0.00779781",
        "shared": true
      },
      {
        "name": "ARKANSAS DEV FIN AUTH",
        "value": "1066733.70",
        "weight": "0.00769646",
        "shared": false
      },
      {
        "name": "ARKANSAS ST DEV FIN AUTH REVENUE",
        "value": "1061228.90",
        "weight": "0.00765674",
        "shared": false
      },
      {
        "name": "Greene County Technical School District No. T-1",
        "value": "1033799.25",
        "weight": "0.00745884",
        "shared": false
      },
      {
        "name": "FORT SMITH SALE 5.25% 11/1/2055",
        "value": "1032220.70",
        "weight": "0.00744745",
        "shared": false
      },
      {
        "name": "University of Arkansas",
        "value": "1028446.60",
        "weight": "0.00742022",
        "shared": false
      },
      {
        "name": "University of Arkansas, Series 2024",
        "value": "1025026.30",
        "weight": "0.00739554",
        "shared": false
      },
      {
        "name": "BEAVER WTR DT",
        "value": "1021887.60",
        "weight": "0.00737289",
        "shared": false
      },
      {
        "name": "Beaver Water District of Benton & Washington Counties, Series 2025",
        "value": "1021703.50",
        "weight": "0.00737156",
        "shared": false
      },
      {
        "name": "City of Bentonville, Series 2023",
        "value": "1010588.70",
        "weight": "0.00729137",
        "shared": false
      },
      {
        "name": "City of Dardanelle, Series 2025",
        "value": "1008708.00",
        "weight": "0.00727780",
        "shared": false
      },
      {
        "name": "City of Marion, Series 2025 B",
        "value": "1007833.20",
        "weight": "0.00727149",
        "shared": false
      },
      {
        "name": "County of Madison, Series 2023",
        "value": "1005928.50",
        "weight": "0.00725775",
        "shared": false
      },
      {
        "name": "Arkansas Development Finance Authority, Single Family Mortgage Revenue Bonds, Mortgage-Backed Securities Program, Series 2025B",
        "value": "1005016.30",
        "weight": "0.00725117",
        "shared": false
      },
      {
        "name": "Arkansas Development Finance Authority",
        "value": "1001626.30",
        "weight": "0.00722671",
        "shared": false
      },
      {
        "name": "State of Arkansas",
        "value": "1001341.00",
        "weight": "0.00722465",
        "shared": false
      },
      {
        "name": "ARKANSAS DEV FIN AUTH HLTHCARE REVENUE",
        "value": "1001024.90",
        "weight": "0.00722237",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-011431",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/751656/000207169126011431/0002071691-26-011431-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0002071691-26-011436",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/751656/000207169126011436/0002071691-26-011436-index.htm"
    }
  ]
}