{
  "page": "compare",
  "query": {
    "a": "FSTTX",
    "b": "CGSM"
  },
  "retrieved_at": "2026-07-07T15:43:10+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": "American Funds Short-Term Tax-Exempt Bond Fund",
    "ticker": "FSTTX",
    "slug": "FSTTX",
    "series_id": "S000009233",
    "html_url": "https://fundwatcher.app/funds/FSTTX/"
  },
  "fund_b": {
    "name": "Capital Group Short Duration Municipal Income ETF",
    "ticker": "CGSM",
    "slug": "CGSM",
    "series_id": "S000080919",
    "html_url": "https://fundwatcher.app/funds/CGSM/"
  },
  "overlap": {
    "coverage_a_by_b": "0.2567716276095140708514028180",
    "coverage_b_by_a": "0.2567716276095140708514028178",
    "shared_count": 314,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "UTILITY-TE-2",
        "value": "22289480.00",
        "weight": "0.00962619",
        "shared": true
      },
      {
        "name": "UNIV OF MICHIGAN MI REGD V/R B/E 2.40000000",
        "value": "18600000.00",
        "weight": "0.00803281",
        "shared": false
      },
      {
        "name": "PEFA INC VAR",
        "value": "18563433.92",
        "weight": "0.00801701",
        "shared": true
      },
      {
        "name": "WASTE MANAGEMENT INC (MPT) 4.6% 10-01-46",
        "value": "17594710.00",
        "weight": "0.00759865",
        "shared": true
      },
      {
        "name": "CA STWD CMNTYS DEV-A",
        "value": "16689206.50",
        "weight": "0.00720759",
        "shared": true
      },
      {
        "name": "MS BUS FIN-VAR-J-CHEV",
        "value": "15300000.00",
        "weight": "0.00660763",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH REVENUES",
        "value": "14800000.00",
        "weight": "0.00639169",
        "shared": true
      },
      {
        "name": "MUNIBOND",
        "value": "13649080.50",
        "weight": "0.00589465",
        "shared": true
      },
      {
        "name": "ARIZONA ST INDL DEV AUTH MF HS REGD V/R B/E 5.00000000",
        "value": "12679041.55",
        "weight": "0.00547571",
        "shared": false
      },
      {
        "name": "WASTE MANAGEMENT INC (MPT) 4.25% 06-01-48",
        "value": "11466338.65",
        "weight": "0.00495198",
        "shared": false
      },
      {
        "name": "SOUTHEAST ENERGY AUTH VAR",
        "value": "10777338.33",
        "weight": "0.00465442",
        "shared": false
      },
      {
        "name": "Los Angeles (City of), CA, Series 2025, RN",
        "value": "10115010.00",
        "weight": "0.00436838",
        "shared": false
      },
      {
        "name": "State of Georgia, Series 2022C",
        "value": "10074610.00",
        "weight": "0.00435093",
        "shared": false
      },
      {
        "name": "WASTE MANAGEMENT INC (MPT) 3.875% 08-01-38",
        "value": "10029470.00",
        "weight": "0.00433144",
        "shared": false
      },
      {
        "name": "HOUSTON TX UTILITY SYS REVENUE REGD V/R B/E 3.45000000",
        "value": "10000000.00",
        "weight": "0.00431871",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2025A",
        "value": "9957705.23",
        "weight": "0.00430045",
        "shared": true
      },
      {
        "name": "UTAH ST HSG CORP MF REVENUE REGD N/C B/E HUD SEC 3.62500000",
        "value": "9830000.00",
        "weight": "0.00424529",
        "shared": false
      },
      {
        "name": "UNIV OF CALIFORNIA CA REVENUES REGD N/C B/E 5.00000000",
        "value": "9412139.07",
        "weight": "0.00406483",
        "shared": true
      },
      {
        "name": "VIRGINIA HSG DEV-G",
        "value": "9396183.77",
        "weight": "0.00405794",
        "shared": false
      },
      {
        "name": "State of Hawaii Department of Budget and Finance, The Queen's Health Systems, Series 2025B",
        "value": "9200000.00",
        "weight": "0.00397322",
        "shared": true
      },
      {
        "name": "MISSISSIPPI ST BUSINESS FIN COMMISSION GULF OPPORTUNITY ZONE",
        "value": "9200000.00",
        "weight": "0.00397322",
        "shared": false
      },
      {
        "name": "California Community Choice Financing Authority, Series F",
        "value": "9026444.36",
        "weight": "0.00389826",
        "shared": true
      },
      {
        "name": "State of Colorado, Series B",
        "value": "8949916.50",
        "weight": "0.00386521",
        "shared": true
      },
      {
        "name": "PREREF CENTRL FL EXPRESSWAY AUTH SR L REGD B/E PREREFUNDED 07/01/26 @ 100 4.00000000",
        "value": "8708428.37",
        "weight": "0.00376092",
        "shared": true
      },
      {
        "name": "BLACK BELT ENERGY GAS DISTRICT (MPT) 5.0% 03-01-55",
        "value": "8694931.42",
        "weight": "0.00375509",
        "shared": true
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2024B",
        "value": "8639945.58",
        "weight": "0.00373134",
        "shared": false
      },
      {
        "name": "NEW YORK MUNI WTR-AA2",
        "value": "8253699.75",
        "weight": "0.00356454",
        "shared": false
      },
      {
        "name": "PREREF BEXAR CNTY TX REGD B/E PREREFUNDED 06/15/26 @ 100 5.00000000",
        "value": "8077896.00",
        "weight": "0.00348861",
        "shared": false
      },
      {
        "name": "QUEEN'S HEALTH SYSTEMS OBLIGATED GROUP FRN 07-01-51",
        "value": "8000000.00",
        "weight": "0.00345497",
        "shared": false
      },
      {
        "name": "PALMDALE FAMILY HOUSING LP (MPT) 2.95% 01-01-56",
        "value": "7961034.80",
        "weight": "0.00343814",
        "shared": true
      },
      {
        "name": "STHRN CA PUB PWR-B",
        "value": "7840918.80",
        "weight": "0.00338627",
        "shared": true
      },
      {
        "name": "STATE OF NORTH CAROLINA 5.0% 06-01-29",
        "value": "7796649.18",
        "weight": "0.00336715",
        "shared": true
      },
      {
        "name": "MI HSG ST DEV AUTH-A",
        "value": "7767187.95",
        "weight": "0.00335443",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Series 2024A-1",
        "value": "7418313.00",
        "weight": "0.00320376",
        "shared": true
      },
      {
        "name": "NYC TRANSITIONAL-F-1",
        "value": "7405853.00",
        "weight": "0.00319838",
        "shared": false
      },
      {
        "name": "HOUSTON TX ISD",
        "value": "7319753.80",
        "weight": "0.00316119",
        "shared": false
      },
      {
        "name": "LOS ANGELES DEPT-C",
        "value": "7267291.79",
        "weight": "0.00313853",
        "shared": true
      },
      {
        "name": "CARROLLTON-FARMERS BRANCH INDEPENDENT SCHOOL DISTRICT PSF-GTD 5.0% 02-15-27",
        "value": "7197512.00",
        "weight": "0.00310840",
        "shared": false
      },
      {
        "name": "NORTH PORT PRESERVATION LTD DIVIDEND HOUSING ASSOCIATION LLC FHA 223(F) (MPT) 5.0% 08-01-27",
        "value": "7149353.68",
        "weight": "0.00308760",
        "shared": true
      },
      {
        "name": "California Community Choice Financing Authority, Series B-1",
        "value": "7146357.68",
        "weight": "0.00308631",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Clean Energy) (Green Bonds), Series 2024, RB",
        "value": "7142265.79",
        "weight": "0.00308454",
        "shared": true
      },
      {
        "name": "WISE VA IDA SW 3.125% MT",
        "value": "7072009.00",
        "weight": "0.00305420",
        "shared": true
      },
      {
        "name": "NEW HAVEN UNIFIED SCHOOL DISTRICT AG 0.0% 08-01-29",
        "value": "7002963.00",
        "weight": "0.00302438",
        "shared": false
      },
      {
        "name": "TX EXXON 12 G=EXXON V1",
        "value": "7000000.00",
        "weight": "0.00302310",
        "shared": false
      },
      {
        "name": "NYC MUNI WTR FIN-DD",
        "value": "6931892.50",
        "weight": "0.00299369",
        "shared": false
      },
      {
        "name": "EXXON MOBIL CORP FRN 12-01-40",
        "value": "6800000.00",
        "weight": "0.00293672",
        "shared": false
      },
      {
        "name": "RUSH SYSTEM FOR HEALTH OBLIGATED GROUP 5.0% 11-15-30",
        "value": "6785843.75",
        "weight": "0.00293061",
        "shared": true
      },
      {
        "name": "PORT OF PORTLAND OR AIRPORT REVENUE 5.0% 07-01-31",
        "value": "6678432.00",
        "weight": "0.00288422",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Series 2022A-1",
        "value": "6555042.00",
        "weight": "0.00283093",
        "shared": true
      },
      {
        "name": "DICKSON TN HLTH EDUCTNL & HSG FAC BRD MF REVENUE",
        "value": "6518635.31",
        "weight": "0.00281521",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "SOUTH CAROLINA ST JOBS-ECON DEV AUTH HOSP REVENUE",
        "value": "15905000.00",
        "weight": "0.01427001",
        "shared": false
      },
      {
        "name": "MS BUS FIN-VAR-A-CHEV",
        "value": "14375000.00",
        "weight": "0.01289729",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "13286303.55",
        "weight": "0.01192051",
        "shared": true
      },
      {
        "name": "Water & Sewer System 2nd Resolution RB Fiscal 2011 Series FF1",
        "value": "11000000.00",
        "weight": "0.00986923",
        "shared": false
      },
      {
        "name": "PEFA INC VAR",
        "value": "10126248.35",
        "weight": "0.00908530",
        "shared": true
      },
      {
        "name": "TARRANT TX EDFC 5% MT",
        "value": "8784596.00",
        "weight": "0.00788156",
        "shared": false
      },
      {
        "name": "NYC TRANS FIN AUTH-B4",
        "value": "8400000.00",
        "weight": "0.00753650",
        "shared": true
      },
      {
        "name": "UNIV OF CALIFORNIA CA REVENUES REGD N/C B/E 5.00000000",
        "value": "8141966.43",
        "weight": "0.00730499",
        "shared": true
      },
      {
        "name": "ANTELOPE VLY CLG-A",
        "value": "6947076.83",
        "weight": "0.00623294",
        "shared": true
      },
      {
        "name": "VALDEZ ALASKA MARINE TERM REV_  SER B B/E REGD VARIABLE RATE NC 2.65000000",
        "value": "6675000.00",
        "weight": "0.00598883",
        "shared": true
      },
      {
        "name": "MUNIBOND",
        "value": "6534377.24",
        "weight": "0.00586266",
        "shared": true
      },
      {
        "name": "WISCONSIN ST HSG & ECON DEV AUTH HOME OWNERSHIP REVENUE",
        "value": "6417752.20",
        "weight": "0.00575802",
        "shared": false
      },
      {
        "name": "Puerto Rico, General Obligation Bonds, Vintage CW NT Claims Taxable Series 2022",
        "value": "6356509.11",
        "weight": "0.00570308",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2025A",
        "value": "5864791.36",
        "weight": "0.00526191",
        "shared": true
      },
      {
        "name": "WASHINGTON SUBURBAN SAN DIST MD",
        "value": "5746173.25",
        "weight": "0.00515548",
        "shared": false
      },
      {
        "name": "State of Wisconsin, Series 2026-1",
        "value": "5720508.83",
        "weight": "0.00513246",
        "shared": false
      },
      {
        "name": "UTILITY-TE-2",
        "value": "5460459.50",
        "weight": "0.00489914",
        "shared": true
      },
      {
        "name": "TRINITY HEALTH CORP OBLIGATED GROUP (MPT) 2.65% 12-01-34",
        "value": "4835000.00",
        "weight": "0.00433797",
        "shared": false
      },
      {
        "name": "County of Fairfax, Series 2026B",
        "value": "4729511.56",
        "weight": "0.00424333",
        "shared": false
      },
      {
        "name": "STATE OF MINNESOTA 5.0% 08-01-28",
        "value": "4599560.37",
        "weight": "0.00412674",
        "shared": true
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH REVENUES",
        "value": "4540000.00",
        "weight": "0.00407330",
        "shared": true
      },
      {
        "name": "CALIFORNIA ST PUBLIC WKS BRD LEASE REVENUE",
        "value": "4490308.00",
        "weight": "0.00402872",
        "shared": false
      },
      {
        "name": "CALIFORNIA ST-REF",
        "value": "4449106.00",
        "weight": "0.00399175",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Clean Energy) (Green Bonds), Series 2024, RB",
        "value": "4437544.91",
        "weight": "0.00398138",
        "shared": true
      },
      {
        "name": "State of Illinois, Series 2025, GO Bonds",
        "value": "4436570.40",
        "weight": "0.00398050",
        "shared": true
      },
      {
        "name": "Los Angeles Department of Water & Power, Series 2025A",
        "value": "4386262.34",
        "weight": "0.00393537",
        "shared": true
      },
      {
        "name": "CALIFORNIA ST",
        "value": "4365170.58",
        "weight": "0.00391644",
        "shared": false
      },
      {
        "name": "HAMPTON SAN DIST-A",
        "value": "4279816.73",
        "weight": "0.00383986",
        "shared": true
      },
      {
        "name": "California Community Choice Financing Authority, Series 2023 E-1",
        "value": "4226660.00",
        "weight": "0.00379217",
        "shared": true
      },
      {
        "name": "SOUTHEAST ALA PREP 5% MT",
        "value": "4212994.40",
        "weight": "0.00377991",
        "shared": false
      },
      {
        "name": "HAMPTON ROADS VA TRANSPRTN ACC REGD N/C B/E ETM 5.00000000",
        "value": "4139762.42",
        "weight": "0.00371421",
        "shared": true
      },
      {
        "name": "NEW YORK CITY TRANSITIONAL FINANCE AUTHORITY FUTURE TAX SECURED REVENUE 5.0% 11-01-27",
        "value": "4138821.40",
        "weight": "0.00371336",
        "shared": true
      },
      {
        "name": "ARGYLE TX INDEP SCH DIST",
        "value": "4135313.15",
        "weight": "0.00371021",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Series 2022A-1",
        "value": "4116824.13",
        "weight": "0.00369363",
        "shared": true
      },
      {
        "name": "Puerto Rico, General Obligation Bonds, Clawback Highway Transportation Authority Claims Taxable Series 2022",
        "value": "4062353.45",
        "weight": "0.00364475",
        "shared": false
      },
      {
        "name": "ARIZONA ST INDL DEV AUTH MF HSG REVENUE",
        "value": "4032415.30",
        "weight": "0.00361789",
        "shared": false
      },
      {
        "name": "WISCONSIN ST",
        "value": "4028124.06",
        "weight": "0.00361404",
        "shared": false
      },
      {
        "name": "GRAND RAPIDS MI ECON DEV CORP REGD B/E 4.12500000",
        "value": "4000584.80",
        "weight": "0.00358934",
        "shared": false
      },
      {
        "name": "STATE OF NEW JERSEY 0.0% 12-15-28",
        "value": "3963799.77",
        "weight": "0.00355633",
        "shared": true
      },
      {
        "name": "CTR TX RMA 5% 1/1/2027",
        "value": "3652272.95",
        "weight": "0.00327683",
        "shared": true
      },
      {
        "name": "State of Maryland, Series 2025B",
        "value": "3644925.35",
        "weight": "0.00327024",
        "shared": false
      },
      {
        "name": "PREREF CENTRL FL EXPRESSWAY AUTH SR L REGD B/E PREREFUNDED 07/01/26 @ 100 4.00000000",
        "value": "3643980.58",
        "weight": "0.00326939",
        "shared": true
      },
      {
        "name": "WASTE MANAGEMENT PA OBLIGATED GROUP (MPT) 3.4% 08-01-45",
        "value": "3629333.53",
        "weight": "0.00325625",
        "shared": false
      },
      {
        "name": "UNIVERSITY OF CHICAGO MEDICAL CENTER OBLIGATED GROUP FRN 08-01-44",
        "value": "3550000.00",
        "weight": "0.00318507",
        "shared": true
      },
      {
        "name": "OHIO ST",
        "value": "3538218.21",
        "weight": "0.00317450",
        "shared": false
      },
      {
        "name": "MAIN STR NAT GA 0% 8/1/2052",
        "value": "3513002.24",
        "weight": "0.00315188",
        "shared": true
      },
      {
        "name": "COLORADO ST HLTH FACS AUTH REV REGD V/R B/E 2.83000000",
        "value": "3499571.25",
        "weight": "0.00313982",
        "shared": false
      },
      {
        "name": "RHODE ISLAND HOUSING & MORTGAGE FINANCE CORP GNMA COLL 6.25% 10-01-53",
        "value": "3481384.28",
        "weight": "0.00312351",
        "shared": false
      },
      {
        "name": "SARASOTA CNTY FL PUBLIC HOSP DIST",
        "value": "3478445.43",
        "weight": "0.00312087",
        "shared": false
      },
      {
        "name": "CA STWD CMNTYS DEV-A",
        "value": "3466632.51",
        "weight": "0.00311027",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001193125-26-130879",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/845376/000119312526130879/0001193125-26-130879-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-054718",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1870117/000141036826054718/0001410368-26-054718-index.htm"
    }
  ]
}