{
  "page": "compare",
  "query": {
    "a": "FASUX",
    "b": "FMUB"
  },
  "retrieved_at": "2026-07-07T19:22:46+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": "Fidelity Sustainable Intermediate Municipal Income Fund",
    "ticker": "FASUX",
    "slug": "FASUX",
    "series_id": "S000075893",
    "html_url": "https://fundwatcher.app/funds/FASUX/"
  },
  "fund_b": {
    "name": "Fidelity Municipal Bond Opportunities ETF",
    "ticker": "FMUB",
    "slug": "FMUB",
    "series_id": "S000089370",
    "html_url": "https://fundwatcher.app/funds/FMUB/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1408856435842988483254069717",
    "coverage_b_by_a": "0.1408856435842988483254069717",
    "shared_count": 39,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "Fidelity Municipal Cash Central Fund",
        "value": "1553908.15",
        "weight": "0.05876032",
        "shared": true
      },
      {
        "name": "CT SPEC TAX 5% 7/1/2034",
        "value": "553162.51",
        "weight": "0.02091759",
        "shared": false
      },
      {
        "name": "DALLAS TX 5% 2/15/2031",
        "value": "353888.99",
        "weight": "0.01338215",
        "shared": false
      },
      {
        "name": "VAUXMONT METROPOLITAN DISTRICT AG 5.0% 12-01-28",
        "value": "344954.09",
        "weight": "0.01304428",
        "shared": false
      },
      {
        "name": "CLEAR CREEK TX INDEP SCH DIST REGD B/E PSF-GTD 5.00000000",
        "value": "344145.99",
        "weight": "0.01301372",
        "shared": false
      },
      {
        "name": "TOMBALL TX ISD 5% 2/15/2038",
        "value": "341612.25",
        "weight": "0.01291791",
        "shared": false
      },
      {
        "name": "LOS ANGELES CA DEPT OF ARPTS ARPT REVENUE",
        "value": "334113.06",
        "weight": "0.01263433",
        "shared": false
      },
      {
        "name": "TRAVI TX 89439Y 5% 3/1/2027",
        "value": "308398.62",
        "weight": "0.01166195",
        "shared": false
      },
      {
        "name": "ALLEGHENY CO PA 5% 12/1/2026",
        "value": "270799.92",
        "weight": "0.01024017",
        "shared": false
      },
      {
        "name": "City of Atlanta Department of Aviation, Series 2025BB-1",
        "value": "270748.25",
        "weight": "0.01023822",
        "shared": false
      },
      {
        "name": "ILLINOIS FINANC 5% 10/1/2029",
        "value": "270088.03",
        "weight": "0.01021326",
        "shared": false
      },
      {
        "name": "ARLINGTON MA 2% 9/15/2034",
        "value": "251346.07",
        "weight": "0.00950454",
        "shared": false
      },
      {
        "name": "BOSTON MA W and S 3% 11/1/2033",
        "value": "249106.08",
        "weight": "0.00941983",
        "shared": false
      },
      {
        "name": "ILLINOIS ST FIN AUTH REVENUE REGD N/C B/E 5.00000000",
        "value": "237577.80",
        "weight": "0.00898390",
        "shared": false
      },
      {
        "name": "State of California",
        "value": "236624.24",
        "weight": "0.00894784",
        "shared": false
      },
      {
        "name": "WAKE CNTY LTD O 5% 5/1/2036",
        "value": "235787.76",
        "weight": "0.00891621",
        "shared": false
      },
      {
        "name": "NJ TRANSPRTN TRUST-CC",
        "value": "233951.52",
        "weight": "0.00884677",
        "shared": false
      },
      {
        "name": "WA ST UNIV-REF",
        "value": "220389.26",
        "weight": "0.00833392",
        "shared": false
      },
      {
        "name": "Southeast Energy Authority, Alabama, Revenue Bonds Cooperative District Energy Supply Series 2024C",
        "value": "215819.92",
        "weight": "0.00816113",
        "shared": true
      },
      {
        "name": "Los Angeles Department of Water & Power Water System, Series 2025 C",
        "value": "214545.22",
        "weight": "0.00811293",
        "shared": false
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      {
        "name": "DENTON TX ISD-SER B2",
        "value": "212869.46",
        "weight": "0.00804956",
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      {
        "name": "UNIV TX 2% 8/15/2036",
        "value": "211639.53",
        "weight": "0.00800305",
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      },
      {
        "name": "ESCAMBIA FL HSP 5% 8/15/2034",
        "value": "211189.82",
        "weight": "0.00798605",
        "shared": false
      },
      {
        "name": "PORT OF LOS ANGELES LOSTRN 08/38 FIXED 5",
        "value": "207148.09",
        "weight": "0.00783321",
        "shared": false
      },
      {
        "name": "Southeast Energy Authority A Cooperative District, Series 2025A",
        "value": "201052.07",
        "weight": "0.00760269",
        "shared": false
      },
      {
        "name": "GA PWR - SOUTHERN CO 18-1 V1",
        "value": "200000.00",
        "weight": "0.00756291",
        "shared": false
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      {
        "name": "GARLAND TEX 5% 2/15/2038",
        "value": "198743.88",
        "weight": "0.00751541",
        "shared": false
      },
      {
        "name": "GREAT LAKES WTR 5.25% 7/1/2045",
        "value": "190350.88",
        "weight": "0.00719803",
        "shared": false
      },
      {
        "name": "FAIRFAX C VA 5% 1/1/2045 MT",
        "value": "185452.49",
        "weight": "0.00701280",
        "shared": true
      },
      {
        "name": "SALT VERDE FINL CORP GAS REV ARIZ SR",
        "value": "181238.11",
        "weight": "0.00685344",
        "shared": false
      },
      {
        "name": "WI ST 5% 5/1/2034 Q",
        "value": "177539.31",
        "weight": "0.00671357",
        "shared": false
      },
      {
        "name": "State of Illinois Sales Tax Revenue",
        "value": "177168.91",
        "weight": "0.00669956",
        "shared": false
      },
      {
        "name": "WAYNE ST U MI 5% 11/15/2034",
        "value": "176489.94",
        "weight": "0.00667389",
        "shared": false
      },
      {
        "name": "County of Baltimore, Series 2025",
        "value": "175873.26",
        "weight": "0.00665057",
        "shared": false
      },
      {
        "name": "TARRANT EFFC HO 5% 12/1/2035",
        "value": "174959.79",
        "weight": "0.00661602",
        "shared": false
      },
      {
        "name": "NORTH CAROLINA ST HSG FIN AGY REGD B/E GNMA/FN 6.25000000",
        "value": "172666.34",
        "weight": "0.00652930",
        "shared": true
      },
      {
        "name": "PUBLIC FIN AUTH WI HL",
        "value": "172526.96",
        "weight": "0.00652403",
        "shared": false
      },
      {
        "name": "LOS ANGELES UNIF SD-A",
        "value": "169748.06",
        "weight": "0.00641895",
        "shared": false
      },
      {
        "name": "GLOUCESTER IMPT 5% 7/1/2034",
        "value": "169660.55",
        "weight": "0.00641564",
        "shared": false
      },
      {
        "name": "COLORADO ST HSG & FIN AUTH",
        "value": "168829.20",
        "weight": "0.00638420",
        "shared": false
      },
      {
        "name": "CO ST HI ED COP 5% 11/1/2026",
        "value": "168096.97",
        "weight": "0.00635651",
        "shared": false
      },
      {
        "name": "ENERGY NW/WPPS 5% 7/1/2039",
        "value": "162820.49",
        "weight": "0.00615698",
        "shared": false
      },
      {
        "name": "MAIN STR NAT GA 5% MT",
        "value": "161975.34",
        "weight": "0.00612502",
        "shared": true
      },
      {
        "name": "SOUTHEAST ALA PREP 5% MT",
        "value": "160573.58",
        "weight": "0.00607202",
        "shared": false
      },
      {
        "name": "MISSOUR ST HS 4.90% 11/1/2045",
        "value": "153732.68",
        "weight": "0.00581333",
        "shared": false
      },
      {
        "name": "OH OHSDEV 11/01/2039",
        "value": "152398.02",
        "weight": "0.00576286",
        "shared": false
      },
      {
        "name": "NY NY CITY HS 3.625% MT",
        "value": "151637.61",
        "weight": "0.00573411",
        "shared": true
      },
      {
        "name": "MONTANA ST 4.65% 12/1/2046",
        "value": "150644.70",
        "weight": "0.00569656",
        "shared": false
      },
      {
        "name": "NM MFA 4.60% 9/1/2046",
        "value": "150581.51",
        "weight": "0.00569417",
        "shared": false
      },
      {
        "name": "NYS_HFA 3.375% MT",
        "value": "150040.32",
        "weight": "0.00567371",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "Fidelity Municipal Cash Central Fund",
        "value": "9752624.83",
        "weight": "0.06187547",
        "shared": true
      },
      {
        "name": "MAIN STR NAT GA 5% 5/1/2055 MT",
        "value": "2154067.60",
        "weight": "0.01366647",
        "shared": false
      },
      {
        "name": "DFW ARPT 5% 11/1/2026 @",
        "value": "2025936.02",
        "weight": "0.01285354",
        "shared": false
      },
      {
        "name": "SOUTHEAST ENERGY-E",
        "value": "1921700.86",
        "weight": "0.01219222",
        "shared": true
      },
      {
        "name": "ILLINOIS FIN AT 5.25% 7/1/2035",
        "value": "1595453.22",
        "weight": "0.01012234",
        "shared": false
      },
      {
        "name": "RI STUD LN 5% 12/1/2028 @",
        "value": "1265020.68",
        "weight": "0.00802592",
        "shared": false
      },
      {
        "name": "LANCASTER H AUT 5% 11/1/2027",
        "value": "1202162.40",
        "weight": "0.00762711",
        "shared": false
      },
      {
        "name": "State of Connecticut Special Tax, Series 2024A-2",
        "value": "1182300.60",
        "weight": "0.00750110",
        "shared": false
      },
      {
        "name": "Pennsylvania (Commonwealth of), Series 2025, GO Bonds",
        "value": "1135463.00",
        "weight": "0.00720394",
        "shared": false
      },
      {
        "name": "GREAT LAKES WTR 5% 7/1/2031",
        "value": "1131454.00",
        "weight": "0.00717850",
        "shared": false
      },
      {
        "name": "PORT SEATTLE 5% 7/1/2037 @",
        "value": "1108485.42",
        "weight": "0.00703278",
        "shared": false
      },
      {
        "name": "MTRO WA DC ARPT 5% 10/1/2029 @",
        "value": "1082279.00",
        "weight": "0.00686651",
        "shared": false
      },
      {
        "name": "WAYNE CO MI AAR 5% 12/1/2029@",
        "value": "1079350.70",
        "weight": "0.00684793",
        "shared": false
      },
      {
        "name": "CHICAGO MIDWAY INTL 5.00%",
        "value": "1076744.00",
        "weight": "0.00683140",
        "shared": false
      },
      {
        "name": "South Miami Health Facilities Authority, Inc. (Baptist Health South Florida Obligated Group), Series 2025, RB",
        "value": "1076531.20",
        "weight": "0.00683005",
        "shared": false
      },
      {
        "name": "W VIRGINIA ST H-SER B",
        "value": "1071097.90",
        "weight": "0.00679557",
        "shared": false
      },
      {
        "name": "CHICAGO IL BRD OF EDU REGD B/E 6.25000000",
        "value": "1058323.80",
        "weight": "0.00671453",
        "shared": false
      },
      {
        "name": "Lower Colorado River Authority, Series 2025A",
        "value": "1057653.50",
        "weight": "0.00671028",
        "shared": false
      },
      {
        "name": "DFW ARPT 5.5% 11/1/50@",
        "value": "1056147.20",
        "weight": "0.00670072",
        "shared": false
      },
      {
        "name": "MET NASH AIR TN 5% 7/1/2045 @",
        "value": "1048286.70",
        "weight": "0.00665085",
        "shared": false
      },
      {
        "name": "MID-BAY BRIDGE AUTHORITY AG 5.0% 10-01-30",
        "value": "1023622.36",
        "weight": "0.00649437",
        "shared": false
      },
      {
        "name": "SAN ANTONIO TX ELEC & GAS REVE REGD V/R B/E 0.00000000",
        "value": "1008486.30",
        "weight": "0.00639834",
        "shared": true
      },
      {
        "name": "COLUMBUS HSG RE 3.19% 6/1/2044 MT",
        "value": "1007966.00",
        "weight": "0.00639503",
        "shared": false
      },
      {
        "name": "KING WA MHSG 3.25% 5/1/33",
        "value": "1004004.90",
        "weight": "0.00636990",
        "shared": false
      },
      {
        "name": "MONTANA ST 4.85% 12/1/2055",
        "value": "1000439.00",
        "weight": "0.00634728",
        "shared": false
      },
      {
        "name": "Pine View Public Infrastructure District No. 2, Series 2026",
        "value": "1000079.50",
        "weight": "0.00634500",
        "shared": false
      },
      {
        "name": "BUCKEYE TOBACCO SETTLEMENT FIN BUCGEN 06/48 FIXED 3",
        "value": "988246.84",
        "weight": "0.00626993",
        "shared": false
      },
      {
        "name": "SIOUX FALLS REG 5% 12/1/2032 @",
        "value": "900309.42",
        "weight": "0.00571201",
        "shared": false
      },
      {
        "name": "PORT PORT ARTHUR TEX NAV DIST MOTIVA ENTERPRISES-C",
        "value": "900000.00",
        "weight": "0.00571004",
        "shared": false
      },
      {
        "name": "DENVER CO ARPT 5% 12/1/2036 @",
        "value": "898279.51",
        "weight": "0.00569913",
        "shared": false
      },
      {
        "name": "WAYNE COUNTY AIRPORT AUTHORITY WAYAPT 12/44 FIXED 5.5",
        "value": "892606.26",
        "weight": "0.00566314",
        "shared": false
      },
      {
        "name": "Seminole County School District, Florida, Sales Tax Revenue Bonds, Series 2025",
        "value": "861306.98",
        "weight": "0.00546456",
        "shared": false
      },
      {
        "name": "REDMOND OR REGD B/E AMT 5.00000000",
        "value": "850713.55",
        "weight": "0.00539735",
        "shared": false
      },
      {
        "name": "Chicago O'Hare International Airport, Series 2018B",
        "value": "827452.95",
        "weight": "0.00524977",
        "shared": false
      },
      {
        "name": "VIRGIN ISLANDS TRANSPRTN & INFRASTRUCTURE CORP GRANT ANTIC",
        "value": "825287.76",
        "weight": "0.00523603",
        "shared": false
      },
      {
        "name": "LA CA AIRPT 5.50% 5/15/2036 @",
        "value": "805918.83",
        "weight": "0.00511315",
        "shared": false
      },
      {
        "name": "NORTH CAROLINA ST HSG FIN AGY REGD B/E GNMA/FN 6.25000000",
        "value": "805776.23",
        "weight": "0.00511224",
        "shared": true
      },
      {
        "name": "SOUTH DAKOTA ST HSG DEV AUTH REGD B/E GNMA/FN 6.25000000",
        "value": "793502.35",
        "weight": "0.00503437",
        "shared": false
      },
      {
        "name": "SOUTH CAROLINA ST PUBLIC SVC AUTH REVENUE",
        "value": "777185.50",
        "weight": "0.00493085",
        "shared": false
      },
      {
        "name": "WASHINGTON ST HGR EDU FACS AUT REGD OID B/E 4.00000000",
        "value": "770079.36",
        "weight": "0.00488576",
        "shared": false
      },
      {
        "name": "UT SSTGEN 6.25 04/15/2046",
        "value": "758352.30",
        "weight": "0.00481136",
        "shared": false
      },
      {
        "name": "PEA R AR 704537 2% 2/1/2043",
        "value": "741477.34",
        "weight": "0.00470430",
        "shared": false
      },
      {
        "name": "NEW YORK ST DORM AUTH REVENUES REGD B/E 5.00000000",
        "value": "739597.59",
        "weight": "0.00469237",
        "shared": false
      },
      {
        "name": "STATE OF NEW YORK SALES TAX REVENUE 3.0% 03-15-49",
        "value": "739093.40",
        "weight": "0.00468917",
        "shared": false
      },
      {
        "name": "IOWASTUD LIQUID 5% 12/1/2033",
        "value": "730056.92",
        "weight": "0.00463184",
        "shared": false
      },
      {
        "name": "N TX TOLLWAY AUTH REVENUE",
        "value": "724311.19",
        "weight": "0.00459539",
        "shared": false
      },
      {
        "name": "MUNIBOND",
        "value": "723783.40",
        "weight": "0.00459204",
        "shared": true
      },
      {
        "name": "MISSOURI ST DEV FIN BRD SOLID WASTE DISP REV PROCTER and GAMBLE PAPER PRODS@",
        "value": "719490.20",
        "weight": "0.00456480",
        "shared": false
      },
      {
        "name": "LOWER AL GAS DT-A-REF",
        "value": "718348.16",
        "weight": "0.00455756",
        "shared": true
      },
      {
        "name": "SOUTHEAST ENERGY-D",
        "value": "716371.63",
        "weight": "0.00454502",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000035402-26-002117",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/35315/000003540226002117/0000035402-26-002117-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000035402-26-002026",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1562565/000003540226002026/0000035402-26-002026-index.htm"
    }
  ]
}