{
  "page": "compare",
  "query": {
    "a": "MBMSX",
    "b": "MMGAX"
  },
  "retrieved_at": "2026-07-07T19:24:13+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": "MBMSX",
    "slug": "MBMSX",
    "series_id": "S000002535",
    "html_url": "https://fundwatcher.app/funds/MBMSX/"
  },
  "fund_b": {
    "name": "MFS Georgia Municipal Bond Fund",
    "ticker": "MMGAX",
    "slug": "MMGAX",
    "series_id": "S000002532",
    "html_url": "https://fundwatcher.app/funds/MMGAX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.08248426796803859760380291116",
    "coverage_b_by_a": "0.08248426796803859760380291116",
    "shared_count": 48,
    "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": false
      },
      {
        "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": "MFS Institutional Money Market Portfolio, Class A",
        "value": "5735611.10",
        "weight": "0.04583113",
        "shared": true
      },
      {
        "name": "Georgia Housing & Finance Authority",
        "value": "1395477.40",
        "weight": "0.01115074",
        "shared": false
      },
      {
        "name": "Atlanta Urban Residential Finance Authority, Series 2025 A",
        "value": "1113081.53",
        "weight": "0.00889422",
        "shared": false
      },
      {
        "name": "Metropolitan Atlanta Rapid Transit Authority, Sales Tax, Series 2023A",
        "value": "1094014.00",
        "weight": "0.00874186",
        "shared": false
      },
      {
        "name": "Cobb-Marietta Coliseum & Exhibit Hall Authority, Series 2025, RB",
        "value": "1076619.50",
        "weight": "0.00860287",
        "shared": false
      },
      {
        "name": "Columbia County Hospital Authority, Series A",
        "value": "1067382.10",
        "weight": "0.00852905",
        "shared": false
      },
      {
        "name": "Rome Building Authority, Series 2023",
        "value": "1066619.50",
        "weight": "0.00852296",
        "shared": false
      },
      {
        "name": "MUNI ELEC AUTH OF GEORGIA REGD B/E 5.00000000",
        "value": "1062729.70",
        "weight": "0.00849188",
        "shared": false
      },
      {
        "name": "Rome Building Authority, Series 2023",
        "value": "1059899.30",
        "weight": "0.00846926",
        "shared": false
      },
      {
        "name": "Metropolitan Atlanta Rapid Transit Authority, Series 2025A",
        "value": "1059827.40",
        "weight": "0.00846869",
        "shared": false
      },
      {
        "name": "Griffin Housing Authority, Series 2025 A",
        "value": "1054314.20",
        "weight": "0.00842463",
        "shared": false
      },
      {
        "name": "Main Street Natural Gas, Inc., Series 2025B",
        "value": "1049789.50",
        "weight": "0.00838848",
        "shared": false
      },
      {
        "name": "Douglas County Housing Authority, Series 2025A",
        "value": "1043958.40",
        "weight": "0.00834188",
        "shared": false
      },
      {
        "name": "City of Cartersville, Series 2026",
        "value": "1042098.00",
        "weight": "0.00832702",
        "shared": false
      },
      {
        "name": "City of Atlanta, Series 2024B",
        "value": "1040287.10",
        "weight": "0.00831255",
        "shared": false
      },
      {
        "name": "SPRINGFIELD GA WTR & SWR REVENUE",
        "value": "1039599.90",
        "weight": "0.00830706",
        "shared": false
      },
      {
        "name": "Atlanta Urban Residential Finance Authority, Series 2024A",
        "value": "1038786.40",
        "weight": "0.00830056",
        "shared": false
      },
      {
        "name": "CARTERSVILLE GA WTR & SWR REVENUE",
        "value": "1038500.80",
        "weight": "0.00829827",
        "shared": false
      },
      {
        "name": "Upper Oconee Basin Water Authority, Series 2024",
        "value": "1038109.40",
        "weight": "0.00829515",
        "shared": false
      },
      {
        "name": "Jefferson Public Building Authority, Series 2025",
        "value": "1036997.90",
        "weight": "0.00828626",
        "shared": false
      },
      {
        "name": "City of Columbus, Series 2026",
        "value": "1035971.20",
        "weight": "0.00827806",
        "shared": false
      },
      {
        "name": "Albany-Dougherty County Hospital Authority",
        "value": "1035818.20",
        "weight": "0.00827684",
        "shared": false
      },
      {
        "name": "Development Authority for Fulton County, Series 2026",
        "value": "1034396.60",
        "weight": "0.00826548",
        "shared": false
      },
      {
        "name": "Savannah Economic Development Authority, Georgia, Revenue Bonds, Forsyth Park Parking Project, Series 2026A",
        "value": "1031550.20",
        "weight": "0.00824273",
        "shared": false
      },
      {
        "name": "GRIFFIN GA COMB PUBLIC UTILITY REVENUE",
        "value": "1029280.10",
        "weight": "0.00822459",
        "shared": false
      },
      {
        "name": "MUNI ELEC AUTH OF GA",
        "value": "1028941.60",
        "weight": "0.00822189",
        "shared": false
      },
      {
        "name": "George L. Smith II GA World Congress Center Auth. Rev. (Convention Center Hotel) A",
        "value": "1028772.63",
        "weight": "0.00822054",
        "shared": false
      },
      {
        "name": "Columbia County Hospital Authority, Wellstart Health System Inc., Project, Series 2023A",
        "value": "1027857.90",
        "weight": "0.00821323",
        "shared": false
      },
      {
        "name": "Coweta County Water & Sewage Authority, Series 2024, RB",
        "value": "1027135.20",
        "weight": "0.00820745",
        "shared": false
      },
      {
        "name": "Classic Center Authority for Clarke County, Series 2023A",
        "value": "1025706.40",
        "weight": "0.00819604",
        "shared": false
      },
      {
        "name": "PRIV CLGS & UNIVS AUTH GA",
        "value": "1025410.00",
        "weight": "0.00819367",
        "shared": false
      },
      {
        "name": "Macon Water Authority, Series 2024, RB",
        "value": "1024473.30",
        "weight": "0.00818618",
        "shared": false
      },
      {
        "name": "MUNI ELEC AUTH OF GA",
        "value": "1022887.80",
        "weight": "0.00817352",
        "shared": false
      },
      {
        "name": "DEKALB GA W+S 5% 10/1/2052",
        "value": "1022788.70",
        "weight": "0.00817272",
        "shared": false
      },
      {
        "name": "Walton County Water & Sewer Authority",
        "value": "1022681.10",
        "weight": "0.00817186",
        "shared": false
      },
      {
        "name": "CITY OF ATLANTA GA DEPARTMENT OF AVIATION",
        "value": "1017841.60",
        "weight": "0.00813319",
        "shared": false
      },
      {
        "name": "Rockdale County Public Facilities Authority, Series 2024",
        "value": "1017394.60",
        "weight": "0.00812962",
        "shared": false
      },
      {
        "name": "GEORGIA ST HSG & FIN AUTH REVENUE",
        "value": "1017194.00",
        "weight": "0.00812802",
        "shared": false
      },
      {
        "name": "DEVELOPMENT AUTHORITY FOR FULTON COUNTY",
        "value": "1016944.60",
        "weight": "0.00812603",
        "shared": false
      },
      {
        "name": "NORTH GEORGIA MAC LLC 5.0% 07-01-36",
        "value": "1015536.90",
        "weight": "0.00811478",
        "shared": false
      },
      {
        "name": "Gwinnett (County of), GA Development Authority, Series 2017, Ref. RB",
        "value": "1013229.40",
        "weight": "0.00809634",
        "shared": false
      },
      {
        "name": "Development Authority for Fulton County",
        "value": "1011311.70",
        "weight": "0.00808101",
        "shared": false
      },
      {
        "name": "MUNI ELEC AUTH OF GA REGD B/E AG 5.00000000",
        "value": "1010818.10",
        "weight": "0.00807707",
        "shared": false
      },
      {
        "name": "GNSVLL and HLL GA 5% 2/15/2042",
        "value": "1007623.80",
        "weight": "0.00805155",
        "shared": false
      },
      {
        "name": "Municipal Gas Authority of Georgia, Series 2025",
        "value": "1007489.10",
        "weight": "0.00805047",
        "shared": false
      },
      {
        "name": "DEKALB HSG AUTH-A-REV",
        "value": "1006146.80",
        "weight": "0.00803974",
        "shared": false
      },
      {
        "name": "Henry County Water Authority, Series 2025",
        "value": "1005846.30",
        "weight": "0.00803734",
        "shared": false
      },
      {
        "name": "UNITED STATES SOCCER FEDERATION INC 5.25% 10-01-54",
        "value": "1003589.20",
        "weight": "0.00801931",
        "shared": false
      },
      {
        "name": "SAVANNAH GEORGIA CONVENTION CTR AUTH GA CONVENTION CTR HOTEL",
        "value": "1002028.60",
        "weight": "0.00800684",
        "shared": false
      },
      {
        "name": "City of Atlanta",
        "value": "1000907.70",
        "weight": "0.00799788",
        "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": "0002071691-26-011437",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/751656/000207169126011437/0002071691-26-011437-index.htm"
    }
  ]
}