{
  "page": "compare",
  "query": {
    "a": "SHMMX",
    "b": "AMHIX"
  },
  "retrieved_at": "2026-07-07T17:59:30+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": "Western Asset Managed Municipals Fund",
    "ticker": "SHMMX",
    "slug": "SHMMX",
    "series_id": "S000016628",
    "html_url": "https://fundwatcher.app/funds/SHMMX/"
  },
  "fund_b": {
    "name": "American High-Income Municipal Bond Fund",
    "ticker": "AMHIX",
    "slug": "AMHIX",
    "series_id": "S000009229",
    "html_url": "https://fundwatcher.app/funds/AMHIX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.06177520460439681663938118360",
    "coverage_b_by_a": "0.06177520460439681663938118361",
    "shared_count": 134,
    "as_of": {
      "a": "2026-02-27",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "Puerto Rico Commonwealth Aqueduct & Sewer Authority, Series A",
        "value": "36436518.82",
        "weight": "0.01443099",
        "shared": true
      },
      {
        "name": "STATE OF NEW YORK SALES TAX REVENUE 5.0% 03-15-48",
        "value": "31500795.00",
        "weight": "0.01247616",
        "shared": true
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Clean Energy) (Green Bonds), Series 2024, RB",
        "value": "30665667.20",
        "weight": "0.01214540",
        "shared": true
      },
      {
        "name": "State of Illinois, Series D",
        "value": "30544431.33",
        "weight": "0.01209738",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "27363445.00",
        "weight": "0.01083752",
        "shared": true
      },
      {
        "name": "NEW YORK ST DORM AUTH ST PERSONAL INCOME TAX REVENUE",
        "value": "25323787.50",
        "weight": "0.01002970",
        "shared": false
      },
      {
        "name": "NY ST DORM DASNY PIT 20A 4.0% 03-15-45",
        "value": "24337725.00",
        "weight": "0.00963916",
        "shared": false
      },
      {
        "name": "NYC TRANSITIONAL -C-1",
        "value": "24065403.70",
        "weight": "0.00953131",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING REGD OID B/E AMT 5.25000000",
        "value": "22692850.18",
        "weight": "0.00898770",
        "shared": true
      },
      {
        "name": "NY TRANS CORP 5% 7/1/46 @",
        "value": "22388887.10",
        "weight": "0.00886731",
        "shared": true
      },
      {
        "name": "MSR Energy Authority, Series B",
        "value": "21889121.22",
        "weight": "0.00866937",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL REGD B/E 5.00000000",
        "value": "19116390.78",
        "weight": "0.00757121",
        "shared": false
      },
      {
        "name": "NASHVILLE& DAVIDSON-C",
        "value": "18314166.28",
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        "shared": false
      },
      {
        "name": "NY NYCUTL 5.25 06/15/2052",
        "value": "17972985.40",
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      },
      {
        "name": "NY TRANS CORP(JFK INT NEW ONE)/AGM 5.13% 6/30/60@",
        "value": "17925346.93",
        "weight": "0.00709949",
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      },
      {
        "name": "ILL ST TOLL 5% 1/1/2042",
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      },
      {
        "name": "NY TRANS CORP 5.375% 6/30/2060 @",
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      },
      {
        "name": "NOVANT HEALTH OBLIGATED GROUP 5.0% 12-01-35",
        "value": "17489092.64",
        "weight": "0.00692670",
        "shared": false
      },
      {
        "name": "PUERTO RICO SALES TAX FING COR REGD OID B/E 4.75000000",
        "value": "16691176.97",
        "weight": "0.00661068",
        "shared": true
      },
      {
        "name": "NYC WTR 4% 6/15/2051",
        "value": "16223440.90",
        "weight": "0.00642543",
        "shared": false
      },
      {
        "name": "CHICAGO IL BRD OF EDU REGD B/E 5.00000000",
        "value": "16171706.04",
        "weight": "0.00640494",
        "shared": true
      },
      {
        "name": "NY TRANS CORP 5% 7/1/41 @",
        "value": "16135275.31",
        "weight": "0.00639051",
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      },
      {
        "name": "BAY AREA TOLL-VAR A",
        "value": "15520459.83",
        "weight": "0.00614701",
        "shared": false
      },
      {
        "name": "Public Energy Auth. of Kentucky Gas Supply Rev. Refg. C",
        "value": "15401575.00",
        "weight": "0.00609992",
        "shared": true
      },
      {
        "name": "CALIFORNIA ST MUNI FIN AUTH REVENUE",
        "value": "15273050.95",
        "weight": "0.00604902",
        "shared": false
      },
      {
        "name": "FL BROAPT 5 10/01/2045",
        "value": "15007713.00",
        "weight": "0.00594393",
        "shared": false
      },
      {
        "name": "NOVANT HEALTH OBLIGATED GROUP 5.0% 06-01-55",
        "value": "14790667.23",
        "weight": "0.00585797",
        "shared": true
      },
      {
        "name": "NY MTA DED 4% 11/15/2054",
        "value": "14721286.89",
        "weight": "0.00583049",
        "shared": false
      },
      {
        "name": "NV CLA 5 05/01/2048",
        "value": "14101160.81",
        "weight": "0.00558488",
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      {
        "name": "STATE OF NEW JERSEY 5.0% 06-15-42",
        "value": "13264401.64",
        "weight": "0.00525348",
        "shared": true
      },
      {
        "name": "STATE OF NEW YORK PERSONAL INCOME TAX REVENUE 4.0% 02-15-40",
        "value": "12989308.35",
        "weight": "0.00514453",
        "shared": false
      },
      {
        "name": "RESTRUCTURED-SER A1",
        "value": "12836988.37",
        "weight": "0.00508420",
        "shared": true
      },
      {
        "name": "STATE OF ILLINOIS MCCORMICK PLACE EXPANSION PROJECT FUND 4.0% 06-15-50",
        "value": "12808942.08",
        "weight": "0.00507309",
        "shared": true
      },
      {
        "name": "NYC MUNI WTR FIN-AA-3",
        "value": "12328789.00",
        "weight": "0.00488292",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "12168583.42",
        "weight": "0.00481947",
        "shared": false
      },
      {
        "name": "Chandler Industrial Development Authority, Series 2019",
        "value": "11937115.72",
        "weight": "0.00472780",
        "shared": false
      },
      {
        "name": "Puerto Rico Commonwealth Aqueduct & Sewer Authority, Series A",
        "value": "11796346.20",
        "weight": "0.00467204",
        "shared": true
      },
      {
        "name": "NJ TRANSPRTN TRUST-CC",
        "value": "11713443.50",
        "weight": "0.00463921",
        "shared": false
      },
      {
        "name": "LANCASTER H AUT 5% 11/1/2046",
        "value": "11611028.68",
        "weight": "0.00459865",
        "shared": false
      },
      {
        "name": "Puerto Rico Commonwealth Aqueduct & Sewer Authority, Series A",
        "value": "11456776.71",
        "weight": "0.00453755",
        "shared": true
      },
      {
        "name": "NY TRANS CORP 5% 1/1/2032 @",
        "value": "11441597.77",
        "weight": "0.00453154",
        "shared": true
      },
      {
        "name": "Puerto Rico Commonwealth Aqueduct & Sewer Authority, Series A",
        "value": "11339606.69",
        "weight": "0.00449115",
        "shared": false
      },
      {
        "name": "NYC TRANSITIONAL FIN",
        "value": "10941080.40",
        "weight": "0.00433331",
        "shared": false
      },
      {
        "name": "NYC TRANS FIN-F1",
        "value": "10768638.20",
        "weight": "0.00426501",
        "shared": false
      },
      {
        "name": "California Community Choice Financing Authority, Series B-1",
        "value": "10637908.00",
        "weight": "0.00421323",
        "shared": false
      },
      {
        "name": "Southeast Energy Authority, Alabama, Revenue Bonds, Cooperative District Energy Supply Series 2025B",
        "value": "10635794.76",
        "weight": "0.00421240",
        "shared": true
      },
      {
        "name": "AL ALSFAC 5.25 07/01/2047",
        "value": "10568773.00",
        "weight": "0.00418585",
        "shared": false
      },
      {
        "name": "ELGIN TX ISD 4% 8/1/2049",
        "value": "10081244.48",
        "weight": "0.00399276",
        "shared": false
      },
      {
        "name": "Jefferson (County of), AL, Series 2024, Ref. Revenue Wts.",
        "value": "10079368.90",
        "weight": "0.00399202",
        "shared": true
      },
      {
        "name": "California Community Choice Financing Authority, Series 2025G",
        "value": "10032860.53",
        "weight": "0.00397360",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "Puerto Rico, General Obligation Bonds, Clawback Highway Transportation Authority Claims Taxable Series 2022",
        "value": "128513212.80",
        "weight": "0.00935438",
        "shared": false
      },
      {
        "name": "Puerto Rico, General Obligation Bonds, Vintage CW NT Claims Taxable Series 2022",
        "value": "125136094.85",
        "weight": "0.00910856",
        "shared": true
      },
      {
        "name": "U.S. Treasury Bills",
        "value": "79992104.00",
        "weight": "0.00582256",
        "shared": false
      },
      {
        "name": "NEW YORK CITY TRANSITIONAL FINANCE AUTHORITY FUTURE TAX SECURED REVENUE FRN 11-01-54",
        "value": "47550000.00",
        "weight": "0.00346113",
        "shared": false
      },
      {
        "name": "WASTE PRO USA INC 3.0% 06-01-32",
        "value": "46753240.20",
        "weight": "0.00340313",
        "shared": false
      },
      {
        "name": "BIG RIVER STEEL LLC 4.5% 09-01-49",
        "value": "46734163.64",
        "weight": "0.00340174",
        "shared": false
      },
      {
        "name": "UIPA CROSSROADS PUBLIC INFRASTRUCTURE DISTRICT AJL PROJECT AREA 4.375% 06-01-52",
        "value": "45745886.61",
        "weight": "0.00332981",
        "shared": false
      },
      {
        "name": "Wisconsin (State of) Public Finance Authority, Series 2023 B, RB",
        "value": "45179437.50",
        "weight": "0.00328858",
        "shared": false
      },
      {
        "name": "CSCDA COMMUNITY IMPROVEMENT AUTHORITY UNION SOUTH BAY 4.0% 07-01-56",
        "value": "41819255.31",
        "weight": "0.00304399",
        "shared": false
      },
      {
        "name": "NEW YORK NY REGD V/R B/E 2.65000000",
        "value": "41800000.00",
        "weight": "0.00304259",
        "shared": false
      },
      {
        "name": "HM Metropolitan District No. 2, Series 2021, GO Bonds",
        "value": "40888143.48",
        "weight": "0.00297622",
        "shared": false
      },
      {
        "name": "EDUCATIONAL GROWTH FUND LLC 5.0% 07-01-56",
        "value": "39166091.48",
        "weight": "0.00285087",
        "shared": false
      },
      {
        "name": "PUERTO RICO SALES TAX FING COR REGD ZCP OID B/E 0.00000000",
        "value": "39012358.00",
        "weight": "0.00283968",
        "shared": true
      },
      {
        "name": "Puerto Rico Commonwealth Aqueduct & Sewer Authority, Series A",
        "value": "38799848.66",
        "weight": "0.00282421",
        "shared": false
      },
      {
        "name": "UNITED AIRLINES INC 4.0% 07-15-41",
        "value": "38518731.85",
        "weight": "0.00280375",
        "shared": true
      },
      {
        "name": "Public Energy Auth. of Kentucky Gas Supply Rev. Refg. C",
        "value": "36888742.00",
        "weight": "0.00268510",
        "shared": true
      },
      {
        "name": "BIG RIVER STEEL LLC 4.75% 09-01-49",
        "value": "35884394.72",
        "weight": "0.00261200",
        "shared": false
      },
      {
        "name": "OH BUCGEN 5 06/01/2055",
        "value": "35124290.50",
        "weight": "0.00255667",
        "shared": true
      },
      {
        "name": "Montgomery (County of), MD, Series 2017, GO Bonds",
        "value": "34665000.00",
        "weight": "0.00252324",
        "shared": false
      },
      {
        "name": "Black Belt Energy Gas District, Series 2025 G",
        "value": "34389073.99",
        "weight": "0.00250315",
        "shared": false
      },
      {
        "name": "IL CHIEDU 5 12/01/2042",
        "value": "34258948.02",
        "weight": "0.00249368",
        "shared": false
      },
      {
        "name": "PUERTO RICO SALES TAX FING COR REGD OID B/E 4.75000000",
        "value": "34107948.67",
        "weight": "0.00248269",
        "shared": true
      },
      {
        "name": "RESTRUCTURED-SER A1",
        "value": "33807091.72",
        "weight": "0.00246079",
        "shared": true
      },
      {
        "name": "Puerto Rico Commonwealth Aqueduct & Sewer Authority, Series B",
        "value": "33411815.64",
        "weight": "0.00243202",
        "shared": false
      },
      {
        "name": "CO CCKFAC 6 12/01/2051",
        "value": "33269477.90",
        "weight": "0.00242166",
        "shared": false
      },
      {
        "name": "WA ST HSG FIN COMMN-1",
        "value": "31984346.88",
        "weight": "0.00232812",
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      },
      {
        "name": "State of Hawaii Department of Budget and Finance, The Queen's Health Systems, Series 2025B",
        "value": "31870000.00",
        "weight": "0.00231979",
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      },
      {
        "name": "CHICAGO IL BRD OF EDU REGD OID B/E 7.00000000",
        "value": "31584014.00",
        "weight": "0.00229898",
        "shared": false
      },
      {
        "name": "NY TRANSPRTN DEV -AMT",
        "value": "31483876.32",
        "weight": "0.00229169",
        "shared": true
      },
      {
        "name": "TOBACCO SETTLEMENT-B2",
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        "weight": "0.00228865",
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      },
      {
        "name": "FREDDIE MAC MULTIFAMILY ML CERTIFICATES SER 2024-ML26 CL A V/R 3.26001000",
        "value": "31288380.46",
        "weight": "0.00227746",
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      },
      {
        "name": "PALISADE PARK NORTH METROPOLITAN DISTRICT NO 3 5.5% 12-01-51",
        "value": "30810305.32",
        "weight": "0.00224266",
        "shared": false
      },
      {
        "name": "Tender Option Bond Trust Receipts/Certificates",
        "value": "29720389.44",
        "weight": "0.00216332",
        "shared": false
      },
      {
        "name": "STATE OF HAWAII DEPARTMENT OF BUDGET & FINANCE 4.0% 03-01-37",
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        "weight": "0.00216282",
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      },
      {
        "name": "LONGS PEAK METROPOLITAN DISTRICT 5.25% 12-01-51",
        "value": "29712834.72",
        "weight": "0.00216277",
        "shared": false
      },
      {
        "name": "TOWN OF LITTLE ELM TX SPIRITAS RANCH PUBLIC IMPROVEMENT DISTRICT 5.375% 09-01-51",
        "value": "29619146.15",
        "weight": "0.00215596",
        "shared": false
      },
      {
        "name": "AM BIDCO OPERATIONS LLC PIK TL 1ST LIEN 8.5% 10-21-27",
        "value": "29561841.69",
        "weight": "0.00215178",
        "shared": false
      },
      {
        "name": "CSCDA Community Improvement Authority, Series 2021 A",
        "value": "29434923.74",
        "weight": "0.00214255",
        "shared": false
      },
      {
        "name": "NY TRANS CORP 5% 8/1/2031 AMT",
        "value": "29411465.98",
        "weight": "0.00214084",
        "shared": false
      },
      {
        "name": "LOUISIANA ST LOCAL GOVT ENVRNM REGD B/E 2.50000000",
        "value": "28876004.10",
        "weight": "0.00210186",
        "shared": false
      },
      {
        "name": "BUCKLEY METROPOLITAN DISTRICT NO 2 6.0% 12-01-51",
        "value": "28818244.80",
        "weight": "0.00209766",
        "shared": false
      },
      {
        "name": "BROOKLYN EVENTS CENTER LLC 5.0% 07-15-42",
        "value": "28662408.18",
        "weight": "0.00208631",
        "shared": false
      },
      {
        "name": "UNITED AIRLINES INC 5.25% 07-15-34",
        "value": "28435137.75",
        "weight": "0.00206977",
        "shared": false
      },
      {
        "name": "Rampart Range Metropolitan District No. 5, Series 2021, RB",
        "value": "28365493.66",
        "weight": "0.00206470",
        "shared": false
      },
      {
        "name": "New Hampshire (State of) Business Finance Authority (Social Bonds), Series 2022-2A, RB",
        "value": "28158572.09",
        "weight": "0.00204964",
        "shared": false
      },
      {
        "name": "RIVERSIDE HEALTHCARE ASSOCIATION OBLIGATED GROUP 5.33% 07-01-45",
        "value": "27901646.10",
        "weight": "0.00203094",
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      },
      {
        "name": "California Community Housing Agency, Series 2021 A-2",
        "value": "27595370.25",
        "weight": "0.00200865",
        "shared": false
      },
      {
        "name": "TX EXXON 12 G=EXXON V1",
        "value": "27400000.00",
        "weight": "0.00199443",
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      },
      {
        "name": "LOUDOUN IDA VAR-C-HOW",
        "value": "27200000.00",
        "weight": "0.00197987",
        "shared": false
      },
      {
        "name": "NY TRANS CORP(LAGUARDIA GATEW) 5.25% 1/1/50@",
        "value": "27176141.35",
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      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000940400-26-014637",
      "as_of": "2026-02-27",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/764624/000094040026014637/0000940400-26-014637-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001193125-26-130883",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/925950/000119312526130883/0001193125-26-130883-index.htm"
    }
  ]
}