{
  "page": "compare",
  "query": {
    "a": "FSMB",
    "b": "TAFI"
  },
  "retrieved_at": "2026-07-07T16:20:15+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": "First Trust Short Duration Managed Municipal ETF",
    "ticker": "FSMB",
    "slug": "FSMB",
    "series_id": "S000063445",
    "html_url": "https://fundwatcher.app/funds/FSMB/"
  },
  "fund_b": {
    "name": "AB Tax-Aware Short Duration Municipal ETF",
    "ticker": "TAFI",
    "slug": "TAFI",
    "series_id": "S000076879",
    "html_url": "https://fundwatcher.app/funds/TAFI/"
  },
  "overlap": {
    "coverage_a_by_b": "0.05518409397002821377432875743",
    "coverage_b_by_a": "0.05518409397002821377432875744",
    "shared_count": 36,
    "as_of": {
      "a": "2026-04-30",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "Southeast Energy Authority, Alabama, Revenue Bonds Cooperative District Energy Supply Series 2024C",
        "value": "6372370.20",
        "weight": "0.01078087",
        "shared": true
      },
      {
        "name": "County of Utah UT",
        "value": "5000000.00",
        "weight": "0.00845907",
        "shared": false
      },
      {
        "name": "OH OHSDEV 11/01/2039",
        "value": "4805848.92",
        "weight": "0.00813060",
        "shared": false
      },
      {
        "name": "Wisconsin (State of) Public Finance Authority (Duke Energy Progress), Series 2022, Ref. RB",
        "value": "4281206.10",
        "weight": "0.00724301",
        "shared": false
      },
      {
        "name": "St. John the Baptist (Parish of), LA (Marathon Oil Corp.), Series 2017, Ref. RB",
        "value": "4026151.60",
        "weight": "0.00681150",
        "shared": true
      },
      {
        "name": "Main Street Energy, Inc., Series D",
        "value": "3895478.03",
        "weight": "0.00659043",
        "shared": false
      },
      {
        "name": "Palm Beach (County of), FL Health Facilities Authority (ACTS Retirement-Life Communities, Inc.), Series 2016, Ref. RB",
        "value": "3743929.08",
        "weight": "0.00633403",
        "shared": false
      },
      {
        "name": "NYC MUNI WTR FIN-BB",
        "value": "3500000.00",
        "weight": "0.00592135",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2025A",
        "value": "3481712.58",
        "weight": "0.00589041",
        "shared": true
      },
      {
        "name": "Black Belt Energy Gas District",
        "value": "3440432.23",
        "weight": "0.00582057",
        "shared": false
      },
      {
        "name": "BLACK BELT ENERGY GAS VAR",
        "value": "3420591.24",
        "weight": "0.00578701",
        "shared": false
      },
      {
        "name": "NM MUNI ENERGY ACQ AU",
        "value": "3381642.53",
        "weight": "0.00572111",
        "shared": false
      },
      {
        "name": "NEW YORK ST HSG FIN AGY AFFORDABLE HSG REVENUE",
        "value": "3143053.75",
        "weight": "0.00531746",
        "shared": false
      },
      {
        "name": "LOS ANGELES CA DEPT OF ARPTS A REGD B/E AMT 5.00000000",
        "value": "3142415.10",
        "weight": "0.00531638",
        "shared": false
      },
      {
        "name": "ALLEGHENY HOSP DEV-A",
        "value": "3092031.90",
        "weight": "0.00523114",
        "shared": false
      },
      {
        "name": "WHITING IN ENVRNMNTL FACS REVE REGD V/R B/E AMT 5.00000000",
        "value": "3075758.09",
        "weight": "0.00520361",
        "shared": false
      },
      {
        "name": "MD CMNTY DEV-D-2",
        "value": "3035471.70",
        "weight": "0.00513545",
        "shared": false
      },
      {
        "name": "UNITED AIRLINES INC 4.0% 07-15-29",
        "value": "3018532.20",
        "weight": "0.00510680",
        "shared": true
      },
      {
        "name": "WASTE MANAGEMENT INC (MPT) 3.45% 11-01-44",
        "value": "3000298.80",
        "weight": "0.00507595",
        "shared": false
      },
      {
        "name": "NEW YORK NY REGD V/R B/E 2.65000000",
        "value": "3000000.00",
        "weight": "0.00507544",
        "shared": false
      },
      {
        "name": "NORTH CAROLINA ST HSG FIN AGYM REGD V/R B/E 5.00000000",
        "value": "2906436.68",
        "weight": "0.00491715",
        "shared": false
      },
      {
        "name": "TX TMGUTL 01/01/2054",
        "value": "2845828.47",
        "weight": "0.00481461",
        "shared": true
      },
      {
        "name": "FARM N MEX PCR 0% 6/1/2040 MT",
        "value": "2815916.35",
        "weight": "0.00476401",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2024B",
        "value": "2731069.46",
        "weight": "0.00462046",
        "shared": true
      },
      {
        "name": "DFW ARPT 5% 11/1/2031 @",
        "value": "2725976.00",
        "weight": "0.00461185",
        "shared": true
      },
      {
        "name": "FLORIDA DEV FIN CORP HLTHCAREFACS REVENUE",
        "value": "2707992.75",
        "weight": "0.00458142",
        "shared": false
      },
      {
        "name": "City of Atlanta GA Department of Aviation",
        "value": "2697235.25",
        "weight": "0.00456322",
        "shared": false
      },
      {
        "name": "TN TNSUTL 05/01/2053",
        "value": "2573669.50",
        "weight": "0.00435417",
        "shared": true
      },
      {
        "name": "City of Philadelphia PA Airport Revenue",
        "value": "2566634.16",
        "weight": "0.00434227",
        "shared": false
      },
      {
        "name": "FAIRFAX C VA 5% 1/1/2045 MT",
        "value": "2555159.50",
        "weight": "0.00432286",
        "shared": false
      },
      {
        "name": "WASTE MANAGEMENT INC (MPT) 3.45% 10-01-41",
        "value": "2515175.25",
        "weight": "0.00425521",
        "shared": false
      },
      {
        "name": "NORTH BLOCK ASSOCIATES LLC HUD SECT 8 FHA 221(D)(4) (MPT) 3.4% 02-01-29",
        "value": "2511564.25",
        "weight": "0.00424910",
        "shared": false
      },
      {
        "name": "COUNTY OF TRIMBLE KY TRMENV 06/33 FIXED 3.75",
        "value": "2502465.75",
        "weight": "0.00423371",
        "shared": false
      },
      {
        "name": "ARKANSAS DEV FIN AUTH ENVIRONM REGD V/R B/E AMT 4.00000000",
        "value": "2495967.00",
        "weight": "0.00422271",
        "shared": false
      },
      {
        "name": "MOBILE PCR-VAR-AL PWR",
        "value": "2478086.00",
        "weight": "0.00419246",
        "shared": false
      },
      {
        "name": "MTRO WA DC ARPT 5% 10/1/2031 @",
        "value": "2455847.33",
        "weight": "0.00415484",
        "shared": true
      },
      {
        "name": "LEHIGH PA_IDA 3% 9/1/2029",
        "value": "2450784.00",
        "weight": "0.00414627",
        "shared": false
      },
      {
        "name": "INDIANAPOLIS IN LOCAL PUBLIC I REGD N/C B/E AMT 5.00000000",
        "value": "2438325.30",
        "weight": "0.00412519",
        "shared": false
      },
      {
        "name": "State of Illinois, Series C",
        "value": "2437731.08",
        "weight": "0.00412419",
        "shared": false
      },
      {
        "name": "NORTHWESTERN CORP 3.875% 07-01-28",
        "value": "2431955.57",
        "weight": "0.00411442",
        "shared": false
      },
      {
        "name": "HOUSTON-UTL SYS-B-REF",
        "value": "2424190.04",
        "weight": "0.00410128",
        "shared": false
      },
      {
        "name": "DE ST EDA 3.60% 1/1/31",
        "value": "2419505.95",
        "weight": "0.00409335",
        "shared": false
      },
      {
        "name": "PEFA INC VAR",
        "value": "2408907.05",
        "weight": "0.00407542",
        "shared": false
      },
      {
        "name": "TENNERGY CORP TN GAS REVENUE TENNERGY CORP/TN",
        "value": "2384879.46",
        "weight": "0.00403477",
        "shared": false
      },
      {
        "name": "NY TRANS CORP 5% 1/1/2032 @",
        "value": "2370014.59",
        "weight": "0.00400962",
        "shared": false
      },
      {
        "name": "SOUTHEAST ENERGY-F",
        "value": "2355034.34",
        "weight": "0.00398428",
        "shared": false
      },
      {
        "name": "SOUTHEAST ENERGY AUTH VAR",
        "value": "2342301.03",
        "weight": "0.00396274",
        "shared": false
      },
      {
        "name": "South Carolina Jobs-Economic Development Authority, Series 2023A",
        "value": "2313365.26",
        "weight": "0.00391378",
        "shared": false
      },
      {
        "name": "MTRO WA DC ARPT 5% 10/1/2035 @",
        "value": "2304524.08",
        "weight": "0.00389883",
        "shared": false
      },
      {
        "name": "NYC HSG DEV CORP-F-2A",
        "value": "2260772.92",
        "weight": "0.00382481",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "State of Colorado, Series B",
        "value": "19373869.44",
        "weight": "0.01686884",
        "shared": false
      },
      {
        "name": "AB Fixed Income Shares, Inc. - Government Money Market Portfolio",
        "value": "18652920.70",
        "weight": "0.01624111",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH REVENUES",
        "value": "12185000.00",
        "weight": "0.01060949",
        "shared": false
      },
      {
        "name": "SOUTHEAST ENERGY-E",
        "value": "10358752.41",
        "weight": "0.00901937",
        "shared": false
      },
      {
        "name": "QUINCY MA",
        "value": "8587258.45",
        "weight": "0.00747693",
        "shared": false
      },
      {
        "name": "U.S. Treasury Bills",
        "value": "7466069.10",
        "weight": "0.00650071",
        "shared": false
      },
      {
        "name": "ILLINOIS ST FIN AUTH REVENUE REGD V/R B/E 3.25000000",
        "value": "7080000.00",
        "weight": "0.00616456",
        "shared": false
      },
      {
        "name": "COLORADO ST EDUC LOAN PROGRAM",
        "value": "6708323.83",
        "weight": "0.00584094",
        "shared": false
      },
      {
        "name": "NEW JERSEY ST ECON DEV AUTH",
        "value": "6580062.21",
        "weight": "0.00572926",
        "shared": false
      },
      {
        "name": "Southeast Alabama Gas Supply District (The), Series A",
        "value": "6509286.60",
        "weight": "0.00566764",
        "shared": false
      },
      {
        "name": "NY TRANS CORP 5% 1/1/2030 @",
        "value": "5959367.28",
        "weight": "0.00518883",
        "shared": false
      },
      {
        "name": "QUINCY MA",
        "value": "5791195.13",
        "weight": "0.00504240",
        "shared": false
      },
      {
        "name": "AZ HLTH FACS AUTH-C",
        "value": "5720000.00",
        "weight": "0.00498041",
        "shared": false
      },
      {
        "name": "State of Ohio",
        "value": "5700000.00",
        "weight": "0.00496299",
        "shared": false
      },
      {
        "name": "NJ TPK AUTH-B",
        "value": "5654535.37",
        "weight": "0.00492341",
        "shared": false
      },
      {
        "name": "DFW ARPT 5% 11/1/2031 @",
        "value": "5639593.50",
        "weight": "0.00491040",
        "shared": true
      },
      {
        "name": "UNIV OF CALIFORNIA CA REVENUES REGD N/C B/E 5.00000000",
        "value": "5597803.00",
        "weight": "0.00487401",
        "shared": false
      },
      {
        "name": "NJ TRANSPRTN-A-REF",
        "value": "5408855.71",
        "weight": "0.00470949",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Green Bonds), Series 2023 D, RB",
        "value": "5326831.50",
        "weight": "0.00463808",
        "shared": false
      },
      {
        "name": "NY MTATRN 5 11/15/2031",
        "value": "5180603.96",
        "weight": "0.00451076",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST",
        "value": "5156407.50",
        "weight": "0.00448969",
        "shared": false
      },
      {
        "name": "MUNIBOND",
        "value": "5106015.00",
        "weight": "0.00444581",
        "shared": true
      },
      {
        "name": "Los Angeles (City of), CA, Series 2025, RN",
        "value": "5043443.50",
        "weight": "0.00439133",
        "shared": true
      },
      {
        "name": "WASHINGTON ST-R-2026A",
        "value": "4797089.55",
        "weight": "0.00417683",
        "shared": false
      },
      {
        "name": "Los Angeles Department of Water & Power, Series 2025A",
        "value": "4740895.56",
        "weight": "0.00412790",
        "shared": false
      },
      {
        "name": "Town of Oyster Bay",
        "value": "4707937.68",
        "weight": "0.00409920",
        "shared": false
      },
      {
        "name": "GREEN LAKE TWP MI ECON DEV CORP",
        "value": "4700000.00",
        "weight": "0.00409229",
        "shared": false
      },
      {
        "name": "FRISCO TX INDEP SCH DIST",
        "value": "4657591.20",
        "weight": "0.00405537",
        "shared": false
      },
      {
        "name": "MAIN STR NAT GA 0% 8/1/2052",
        "value": "4538079.45",
        "weight": "0.00395131",
        "shared": false
      },
      {
        "name": "SOUTH CAROLINA ST ASSN OF GOVTL ORGANIZATIONS COPS",
        "value": "4510000.00",
        "weight": "0.00392686",
        "shared": false
      },
      {
        "name": "CHICAGO IL BRD OF EDU",
        "value": "4399884.40",
        "weight": "0.00383098",
        "shared": false
      },
      {
        "name": "TX TMGUTL 01/01/2054",
        "value": "4303310.40",
        "weight": "0.00374690",
        "shared": true
      },
      {
        "name": "Ohio (State of) Air Quality Development Authority (Duke Energy Corp.), Series 2022 B, Ref. RB",
        "value": "4243432.84",
        "weight": "0.00369476",
        "shared": true
      },
      {
        "name": "MAIN STR NAT GA 5% 12/1/2052 MT",
        "value": "4239838.40",
        "weight": "0.00369163",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "4221638.80",
        "weight": "0.00367578",
        "shared": false
      },
      {
        "name": "JERSEY CITY NJ",
        "value": "4166629.19",
        "weight": "0.00362789",
        "shared": false
      },
      {
        "name": "JERSEY CITY NJ",
        "value": "4115440.25",
        "weight": "0.00358332",
        "shared": false
      },
      {
        "name": "Chandler Industrial Development Authority, Series 2019",
        "value": "4115005.60",
        "weight": "0.00358294",
        "shared": false
      },
      {
        "name": "Jefferson County Port Authority, Series 2023",
        "value": "4102592.00",
        "weight": "0.00357213",
        "shared": false
      },
      {
        "name": "FLORIDA INSURANCE ASSISTANCE INTERLOCAL AGY",
        "value": "4052002.40",
        "weight": "0.00352808",
        "shared": false
      },
      {
        "name": "OHIO ST AIR QUALITY DEV AUTH REGD N/C B/E AMT 3.70000000",
        "value": "4044697.60",
        "weight": "0.00352172",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING AUTH REVENUE",
        "value": "4024908.00",
        "weight": "0.00350449",
        "shared": false
      },
      {
        "name": "DESERTXPRESS ENTERPRISES LLC (MPT) 3.5% 01-01-65",
        "value": "4001346.40",
        "weight": "0.00348397",
        "shared": false
      },
      {
        "name": "LEGACY DENTON PUB FAC CORP MF HSG REVENUE",
        "value": "4000756.40",
        "weight": "0.00348346",
        "shared": false
      },
      {
        "name": "PORT AUTHORITY OF NEW YORK & NEW JERSEY 3.0% 10-01-28",
        "value": "3983622.80",
        "weight": "0.00346854",
        "shared": false
      },
      {
        "name": "HARRIS TX CED 5% MT",
        "value": "3850262.28",
        "weight": "0.00335243",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Clean Energy) (Green Bonds), Series 2024, RB",
        "value": "3815736.40",
        "weight": "0.00332236",
        "shared": false
      },
      {
        "name": "MAIN STR NAT GA 5% MT",
        "value": "3808447.65",
        "weight": "0.00331602",
        "shared": false
      },
      {
        "name": "DENVER CO ARPT 5.50% 11/15/2035 @",
        "value": "3754636.60",
        "weight": "0.00326916",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE   TUNNEL TRBTRN 03/28 FIXED 5",
        "value": "3700179.00",
        "weight": "0.00322175",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000940400-26-025147",
      "as_of": "2026-04-30",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1424212/000094040026025147/0000940400-26-025147-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-040408",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1496608/000141036826040408/0001410368-26-040408-index.htm"
    }
  ]
}