{
  "page": "compare",
  "query": {
    "a": "DMBZX",
    "b": "DSIBX"
  },
  "retrieved_at": "2026-07-07T18:04:24+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": "BNY Mellon Opportunistic Municipal Securities Fund",
    "ticker": "DMBZX",
    "slug": "DMBZX",
    "series_id": "S000000090",
    "html_url": "https://fundwatcher.app/funds/DMBZX/"
  },
  "fund_b": {
    "name": "BNY Mellon Short Term Municipal Bond Fund",
    "ticker": "DSIBX",
    "slug": "DSIBX",
    "series_id": "S000000094",
    "html_url": "https://fundwatcher.app/funds/DSIBX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.05628813270099764667947610904",
    "coverage_b_by_a": "0.05628813270099764667947610903",
    "shared_count": 8,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "NY ST URBAN DEV-A",
        "value": "10277370.00",
        "weight": "0.02369496",
        "shared": false
      },
      {
        "name": "SOUTHEAST ENERGY-E",
        "value": "8689453.60",
        "weight": "0.02003395",
        "shared": true
      },
      {
        "name": "BUCKEYE TOBACCO SETTLEMENT FIN BUCGEN 06/48 FIXED 4",
        "value": "6327602.30",
        "weight": "0.01458859",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL REGD B/E 5.25000000",
        "value": "5227020.00",
        "weight": "0.01205114",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE   TUNNEL TRBTRN 05/52 FIXED 5.25",
        "value": "5192913.00",
        "weight": "0.01197251",
        "shared": false
      },
      {
        "name": "County of Clark NV 5.00% 06/01/2043",
        "value": "5146417.50",
        "weight": "0.01186531",
        "shared": false
      },
      {
        "name": "UNITED STATES STEEL CORP 5.7% 05-01-53",
        "value": "4880788.32",
        "weight": "0.01125289",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2024A-1",
        "value": "4865910.75",
        "weight": "0.01121859",
        "shared": false
      },
      {
        "name": "New York Transportation Development Corp., Series 2025, RB",
        "value": "4858972.20",
        "weight": "0.01120259",
        "shared": false
      },
      {
        "name": "RESTRUCTURED-SER A1",
        "value": "4601995.20",
        "weight": "0.01061012",
        "shared": true
      },
      {
        "name": "California Municipal Finance Authority",
        "value": "4502316.62",
        "weight": "0.01038030",
        "shared": false
      },
      {
        "name": "Jefferson (County of), AL, Series 2024, Ref. Revenue Wts.",
        "value": "4460744.75",
        "weight": "0.01028446",
        "shared": false
      },
      {
        "name": "MI STRAT FND 5% 6/30/2033 @",
        "value": "4055191.53",
        "weight": "0.00934944",
        "shared": false
      },
      {
        "name": "NATGASOLINE LLC 4.625% 10-01-31",
        "value": "3889564.19",
        "weight": "0.00896757",
        "shared": false
      },
      {
        "name": "W VIRGINIA HOSP FIN-A",
        "value": "3720068.80",
        "weight": "0.00857679",
        "shared": false
      },
      {
        "name": "UNITED AIRLINES INC 4.0% 07-15-29",
        "value": "3707997.09",
        "weight": "0.00854896",
        "shared": true
      },
      {
        "name": "Montgomery (County of), PA Industrial Development Authority (ACTS Retirement-Life Communities, Inc.), Series 2016, Ref. RB",
        "value": "3540672.10",
        "weight": "0.00816319",
        "shared": false
      },
      {
        "name": "Love Field Airport Modernization Corp",
        "value": "3503981.25",
        "weight": "0.00807859",
        "shared": false
      },
      {
        "name": "Port of Portland, Series 29",
        "value": "3408242.50",
        "weight": "0.00785786",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
        "value": "3334360.06",
        "weight": "0.00768752",
        "shared": false
      },
      {
        "name": "Wisconsin (State of) Health & Educational Facilities Authority (Unitypoint Health), Series 2020 A, RB",
        "value": "3327924.11",
        "weight": "0.00767269",
        "shared": false
      },
      {
        "name": "District of Columbia, Series 2022 A, RB",
        "value": "3217805.40",
        "weight": "0.00741880",
        "shared": false
      },
      {
        "name": "UNIV OF CINCINNATI OH RECPTS",
        "value": "3165253.50",
        "weight": "0.00729764",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Series 2025B",
        "value": "3146417.70",
        "weight": "0.00725421",
        "shared": false
      },
      {
        "name": "DENVER CITY & CNTY CO ARPT REV REGD B/E AMT 5.50000000",
        "value": "3135453.60",
        "weight": "0.00722894",
        "shared": false
      },
      {
        "name": "GEORGETOWN-REV",
        "value": "3104963.10",
        "weight": "0.00715864",
        "shared": false
      },
      {
        "name": "PIEDMONT MUNI PWR AGY",
        "value": "3099884.10",
        "weight": "0.00714693",
        "shared": false
      },
      {
        "name": "Pennsylvania Turnpike Commission Oil Franchise Tax Revenue",
        "value": "3068079.60",
        "weight": "0.00707360",
        "shared": false
      },
      {
        "name": "WA KINUTL 01/01/2042",
        "value": "3000000.00",
        "weight": "0.00691664",
        "shared": true
      },
      {
        "name": "DETROIT MI DOWNTOWN DEV AUTH T REGD B/E 5.00000000",
        "value": "2981892.44",
        "weight": "0.00687489",
        "shared": false
      },
      {
        "name": "PUBLIC FIN AUTH WI POLL CONTRO PUBPOL 10/46 ADJUSTABLE VAR",
        "value": "2948487.26",
        "weight": "0.00679788",
        "shared": false
      },
      {
        "name": "WASHINGTON ST- B",
        "value": "2924946.09",
        "weight": "0.00674360",
        "shared": false
      },
      {
        "name": "Palm Beach (County of), FL Health Facilities Authority (Baptist Health South Florida), Series 2019, RB",
        "value": "2919778.12",
        "weight": "0.00673169",
        "shared": false
      },
      {
        "name": "ALLENTOWN PA NEIGHBORHOOD IMPT ZONE DEV AUTH TAX REVENUE",
        "value": "2843756.58",
        "weight": "0.00655642",
        "shared": false
      },
      {
        "name": "Maricopa County Industrial Development Authority, Series 2018 A",
        "value": "2830499.93",
        "weight": "0.00652585",
        "shared": false
      },
      {
        "name": "PORT OF SEATTLE WA REVENUE PORT OF SEATTLE WA",
        "value": "2749104.50",
        "weight": "0.00633819",
        "shared": false
      },
      {
        "name": "Dallas Fort Worth International Airport, Series 2022B",
        "value": "2731235.75",
        "weight": "0.00629699",
        "shared": false
      },
      {
        "name": "CLIFTON TX HGR EDU FIN CORP EDU REVENUE",
        "value": "2656162.88",
        "weight": "0.00612391",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "2631044.00",
        "weight": "0.00606600",
        "shared": false
      },
      {
        "name": "Allegheny County Higher Education Building Authority",
        "value": "2625989.25",
        "weight": "0.00605434",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH SALES TAX REVENUE",
        "value": "2595962.50",
        "weight": "0.00598511",
        "shared": false
      },
      {
        "name": "LOS ANGELES-E-REF",
        "value": "2547974.66",
        "weight": "0.00587448",
        "shared": false
      },
      {
        "name": "Louisiana (State of) Public Facilities Authority (I-10 Calcasieu River Bridge), Series 2024, RB",
        "value": "2535000.00",
        "weight": "0.00584456",
        "shared": false
      },
      {
        "name": "MMBUTL 5 09/1/2047",
        "value": "2521139.75",
        "weight": "0.00581261",
        "shared": false
      },
      {
        "name": "MD MDSDEV 5.25 06/30/2055",
        "value": "2473726.11",
        "weight": "0.00570329",
        "shared": false
      },
      {
        "name": "BASIS SCHOOLS INC OBLIGATED GROUP 5.375% 07-01-50",
        "value": "2471512.75",
        "weight": "0.00569819",
        "shared": false
      },
      {
        "name": "FLORIDA ST LOCAL GOVT FIN COMMISSION EDUCTNL FACS REVENUE",
        "value": "2401977.63",
        "weight": "0.00553787",
        "shared": false
      },
      {
        "name": "FL ST DFC(BRIGHTLINE FL)/AGM 5.25% 7/1/53@",
        "value": "2374245.00",
        "weight": "0.00547393",
        "shared": false
      },
      {
        "name": "Wisconsin (State of) Public Finance Authority, Series 2023, RB",
        "value": "2320174.29",
        "weight": "0.00534927",
        "shared": false
      },
      {
        "name": "IOWA ST FIN AUTH REVENUE REGD B/E 7.25000000",
        "value": "2308612.40",
        "weight": "0.00532261",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "IN FIN HSR 5% MT",
        "value": "3084767.80",
        "weight": "0.02400849",
        "shared": false
      },
      {
        "name": "Pennsylvania Higher Education Assistance Agency",
        "value": "3082604.88",
        "weight": "0.02399165",
        "shared": false
      },
      {
        "name": "Piedmont Municipal Power Agency, Series 2021B",
        "value": "3051009.30",
        "weight": "0.02374575",
        "shared": false
      },
      {
        "name": "PEFA INC VAR",
        "value": "2735598.43",
        "weight": "0.02129093",
        "shared": true
      },
      {
        "name": "EQUITABLE SCHOOL REVOLVING FUND LLC OBLIGATED GROUP 5.0% 11-01-28",
        "value": "2671675.53",
        "weight": "0.02079342",
        "shared": false
      },
      {
        "name": "Mid-Bay Bridge Authority",
        "value": "2549180.69",
        "weight": "0.01984006",
        "shared": false
      },
      {
        "name": "WA KINUTL 01/01/2042",
        "value": "2500000.00",
        "weight": "0.01945729",
        "shared": true
      },
      {
        "name": "SOUTHEAST ENERGY-E",
        "value": "2388461.85",
        "weight": "0.01858920",
        "shared": true
      },
      {
        "name": "North Carolina Medical Care Commission",
        "value": "2185639.82",
        "weight": "0.01701065",
        "shared": false
      },
      {
        "name": "Nashville (City of) & Davidson (County of), TN Metropolitan Government Health & Educational Facilities Board (The) (Vanderbilt Univ Medical Center)",
        "value": "2165383.94",
        "weight": "0.01685300",
        "shared": false
      },
      {
        "name": "WISCONSIN ST HLTH & EDUCTNL FA WISCONSIN HEALTH & EDUCATIONAL FACILITIES AUTHORIT",
        "value": "2159364.80",
        "weight": "0.01680615",
        "shared": false
      },
      {
        "name": "CLIFTON TX HGR EDU FIN CORP EDU REVENUE",
        "value": "2139923.60",
        "weight": "0.01665484",
        "shared": false
      },
      {
        "name": "Connecticut State Health & Educational Facilities Authority",
        "value": "2134794.80",
        "weight": "0.01661493",
        "shared": false
      },
      {
        "name": "Miami-Dade County, Florida, Seaport Revenue Bonds, Refunding Series 2022A",
        "value": "2120767.11",
        "weight": "0.01650575",
        "shared": false
      },
      {
        "name": "RESTRUCTURED-SER A1",
        "value": "2038828.00",
        "weight": "0.01586803",
        "shared": true
      },
      {
        "name": "LANSING MI WTR 2% MT",
        "value": "1998356.00",
        "weight": "0.01555304",
        "shared": false
      },
      {
        "name": "CA ST UNIV-B2",
        "value": "1972048.00",
        "weight": "0.01534828",
        "shared": true
      },
      {
        "name": "Central Puget Sound Regional Transit Authority",
        "value": "1781112.65",
        "weight": "0.01386225",
        "shared": false
      },
      {
        "name": "TOBACCO SETTLEMENT FING CORP NJ",
        "value": "1736281.97",
        "weight": "0.01351334",
        "shared": false
      },
      {
        "name": "CHICAGO PK DT-C-REF",
        "value": "1694982.40",
        "weight": "0.01319190",
        "shared": false
      },
      {
        "name": "LEE INDL DEV-2019A-1",
        "value": "1687572.80",
        "weight": "0.01313424",
        "shared": false
      },
      {
        "name": "LOS ANGELES DEPT-D",
        "value": "1568414.25",
        "weight": "0.01220684",
        "shared": false
      },
      {
        "name": "Clifton Higher Education Finance Corp",
        "value": "1547929.81",
        "weight": "0.01204741",
        "shared": false
      },
      {
        "name": "New York Transportation Development Corp., Series 2018",
        "value": "1544853.75",
        "weight": "0.01202347",
        "shared": false
      },
      {
        "name": "MD CMNTY DEV-D-2",
        "value": "1516740.15",
        "weight": "0.01180466",
        "shared": false
      },
      {
        "name": "PA CHEDEV 5 03/01/2027",
        "value": "1507401.15",
        "weight": "0.01173198",
        "shared": false
      },
      {
        "name": "NY BUIGEN 5 12/15/2031",
        "value": "1478582.25",
        "weight": "0.01150768",
        "shared": false
      },
      {
        "name": "Pennsylvania Housing Finance Agency",
        "value": "1476334.45",
        "weight": "0.01149019",
        "shared": false
      },
      {
        "name": "ME MESHSG 2.75 11/15/2029",
        "value": "1396144.07",
        "weight": "0.01086607",
        "shared": false
      },
      {
        "name": "Humboldt (County of), NV, Series 2016, Ref. RB",
        "value": "1393853.68",
        "weight": "0.01084824",
        "shared": false
      },
      {
        "name": "Chandler Industrial Development Authority, Series 2019",
        "value": "1362582.11",
        "weight": "0.01060486",
        "shared": false
      },
      {
        "name": "NJ STUD LOAN 5% 12/1/2028 @",
        "value": "1360662.68",
        "weight": "0.01058992",
        "shared": false
      },
      {
        "name": "NJ STUD LOAN 5% 12/1/2027 @",
        "value": "1340641.51",
        "weight": "0.01043410",
        "shared": false
      },
      {
        "name": "UNITED AIRLINES INC 4.0% 07-15-29",
        "value": "1289726.10",
        "weight": "0.01003783",
        "shared": true
      },
      {
        "name": "AMERICAN SAMOA-REF-A",
        "value": "1241582.28",
        "weight": "0.00966313",
        "shared": false
      },
      {
        "name": "Arlington Higher Education Finance Corp",
        "value": "1181255.31",
        "weight": "0.00919361",
        "shared": false
      },
      {
        "name": "North East Texas Regional Mobility Authority",
        "value": "1176228.35",
        "weight": "0.00915449",
        "shared": false
      },
      {
        "name": "EL PASO COUNTY HOSPITAL DISTRICT",
        "value": "1145443.50",
        "weight": "0.00891489",
        "shared": false
      },
      {
        "name": "School Board of Miami-Dade County (The), Series 2025A",
        "value": "1114937.70",
        "weight": "0.00867747",
        "shared": false
      },
      {
        "name": "MAIN STR NAT GA 5% 6/1/2026",
        "value": "1102805.22",
        "weight": "0.00858304",
        "shared": false
      },
      {
        "name": "NY HSG FIN AGENCY-A",
        "value": "1095425.65",
        "weight": "0.00852560",
        "shared": false
      },
      {
        "name": "ST JAMES REV 6.1% 6/1/2038",
        "value": "1094772.20",
        "weight": "0.00852052",
        "shared": false
      },
      {
        "name": "Dallas Fort Worth International Airport, Texas, Joint Revenue Bonds, Refunding & Improvement Series 2025A-1",
        "value": "1078944.80",
        "weight": "0.00839734",
        "shared": false
      },
      {
        "name": "INTERNATIONAL LEADERSHIP OF TEXAS INC PSF-GTD 5.0% 08-15-29",
        "value": "1063232.20",
        "weight": "0.00827505",
        "shared": false
      },
      {
        "name": "MI MISMED 5 05/15/2029",
        "value": "1062685.20",
        "weight": "0.00827079",
        "shared": false
      },
      {
        "name": "COLLIER IDA HLT 5% MT",
        "value": "1058409.70",
        "weight": "0.00823751",
        "shared": false
      },
      {
        "name": "Philadelphia Housing Authority",
        "value": "1055087.60",
        "weight": "0.00821166",
        "shared": false
      },
      {
        "name": "School District of Philadelphia/The",
        "value": "1052291.90",
        "weight": "0.00818990",
        "shared": false
      },
      {
        "name": "KANSAS CITY MO INDL DEV AUTH ARPT SPL OBLIG",
        "value": "1051371.30",
        "weight": "0.00818273",
        "shared": false
      },
      {
        "name": "KY PUB ENERGY AUTH-B-",
        "value": "1041005.00",
        "weight": "0.00810205",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000940400-26-011330",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/797923/000094040026011330/0000940400-26-011330-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000940400-26-020536",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/810305/000094040026020536/0000940400-26-020536-index.htm"
    }
  ]
}