{
  "page": "compare",
  "query": {
    "a": "ATTYX",
    "b": "ALTHX"
  },
  "retrieved_at": "2026-07-07T17:50:44+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": "AB Tax-Aware Fixed Income Opportunities Portfolio",
    "ticker": "ATTYX",
    "slug": "ATTYX",
    "series_id": "S000043269",
    "html_url": "https://fundwatcher.app/funds/ATTYX/"
  },
  "fund_b": {
    "name": "AB National Portfolio",
    "ticker": "ALTHX",
    "slug": "ALTHX",
    "series_id": "S000010351",
    "html_url": "https://fundwatcher.app/funds/ALTHX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.3295356943120098865009713637",
    "coverage_b_by_a": "0.3295356943120098865009713638",
    "shared_count": 400,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "AB Fixed Income Shares, Inc. - Government Money Market Portfolio",
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        "weight": "0.02908969",
        "shared": true
      },
      {
        "name": "SOUTHEAST ENRG 5% MT",
        "value": "10595762.00",
        "weight": "0.00857921",
        "shared": true
      },
      {
        "name": "California Community Choice Financing Authority, Series B-1",
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        "weight": "0.00856325",
        "shared": false
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        "name": "COLUMBUS REGL ARPT-A",
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        "shared": false
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      {
        "name": "MTRO WA DC ARPT 5.5% 10/1/54@",
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        "shared": false
      },
      {
        "name": "Washington Metropolitan Area Transit Authority, Series 2023A",
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        "weight": "0.00843887",
        "shared": true
      },
      {
        "name": "MASSACHUSETTS ST MAS 12/54 FIXED 5",
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        "weight": "0.00837431",
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      },
      {
        "name": "NEW YORK ST TWY -C",
        "value": "10114276.00",
        "weight": "0.00818936",
        "shared": false
      },
      {
        "name": "INDIANA ST FIN AUTH HLTH FAC REVENUE",
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        "weight": "0.00773615",
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      },
      {
        "name": "Hillsborough County Industrial Development Authority",
        "value": "8550000.00",
        "weight": "0.00692279",
        "shared": false
      },
      {
        "name": "PORT SEATTLE 5% 10/1/2040@",
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        "weight": "0.00622656",
        "shared": false
      },
      {
        "name": "BAY AREA TOLL-H",
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        "weight": "0.00607263",
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        "name": "District of Columbia Income Tax Revenue (TOBs)",
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      {
        "name": "NY TRANSPRTN DEV CORP",
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        "weight": "0.00541023",
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      {
        "name": "LOS ANGELES CA WSTWTR SYS REVENUE",
        "value": "6542041.74",
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      {
        "name": "MET WASHINGTON DC ARPTS AUTH DULLES TOLL ROAD REVENUE",
        "value": "6356210.00",
        "weight": "0.00514652",
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      {
        "name": "COLORADO ST EDUC LOAN PROGRAM",
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      {
        "name": "MIAMI-DADE CNTY FL AVIATION REVENUE",
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      {
        "name": "State of Colorado, Series B",
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        "name": "PVT CLGS & UNIV AUTH-",
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      {
        "name": "Grand Traverse County Hospital Finance Authority, Series 2019 C",
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      {
        "name": "QUINCY MA",
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      {
        "name": "WI PUBTRN 5.75 12/31/2065",
        "value": "5635884.79",
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      {
        "name": "MBTA SLS TAX 5.25% 7/1/2048",
        "value": "5522824.76",
        "weight": "0.00447174",
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      {
        "name": "SOUTHEAST ENERGY-E",
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        "weight": "0.00439539",
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      {
        "name": "District of Columbia (Green Bonds), Series 2022 A, RB",
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      {
        "name": "LOS ANGELES-D-REF-REV",
        "value": "5060426.08",
        "weight": "0.00409734",
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      {
        "name": "MIAMI-DADE CNTY FL AVIATION REVENUE",
        "value": "5041995.06",
        "weight": "0.00408242",
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      {
        "name": "UNITED AIRLINES INC 5.5% 07-15-38",
        "value": "5032630.36",
        "weight": "0.00407484",
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      {
        "name": "COBB COUNTY SCHOOL DISTRICT",
        "value": "4821914.05",
        "weight": "0.00390422",
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      {
        "name": "NY TRANS CORP 5% 6/30/2049 @",
        "value": "4797281.28",
        "weight": "0.00388428",
        "shared": false
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      {
        "name": "Puerto Rico, General Obligation Bonds, Vintage CW NT Claims Taxable Series 2022",
        "value": "4561091.40",
        "weight": "0.00369304",
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      {
        "name": "State of Illinois, Series 2025B",
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      {
        "name": "NJ TRANSPRTN TRUST-A",
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        "weight": "0.00348798",
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      {
        "name": "TN TNSUTL 5 11/01/2034",
        "value": "4250010.08",
        "weight": "0.00344116",
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      {
        "name": "FEDERAL HOME LOAN MTGE CORP MF VARIABLE RATE CTFS",
        "value": "4174927.87",
        "weight": "0.00338037",
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      },
      {
        "name": "PENNSYLVANIA ST",
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        "weight": "0.00334189",
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      {
        "name": "WI PUBTRN 5.75 06/30/2060",
        "value": "4126895.49",
        "weight": "0.00334148",
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      },
      {
        "name": "Southeast Alabama Gas Supply District (The), Series A",
        "value": "4095733.71",
        "weight": "0.00331625",
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      {
        "name": "ANCHORAGE MUNICIPLITY",
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        "weight": "0.00331257",
        "shared": false
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      {
        "name": "BLACK BELT ENERGY GAS DISTRICT (MPT) 5.0% 03-01-55",
        "value": "4066204.14",
        "weight": "0.00329234",
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      },
      {
        "name": "DESERTXPRESS ENTERPRISES LLC (MPT) 3.5% 01-01-65",
        "value": "4001887.60",
        "weight": "0.00324026",
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      },
      {
        "name": "MET WASHINGTON DC ARPTS AUTH ARPT SYS REVENUE",
        "value": "3925418.43",
        "weight": "0.00317835",
        "shared": true
      },
      {
        "name": "NATIONAL FIN AUTH NH REVENUE",
        "value": "3868828.77",
        "weight": "0.00313253",
        "shared": true
      },
      {
        "name": "SAN FRANCISCO CITY & COUNTY AIRPORT COMM-SAN FRANCISCO INTERNATIONAL AIRPORT 5.25% 05-01-40",
        "value": "3794201.10",
        "weight": "0.00307210",
        "shared": true
      },
      {
        "name": "Metropolitan Nashville, TN Airport Auth. Rev. B, AMT",
        "value": "3660288.80",
        "weight": "0.00296368",
        "shared": false
      },
      {
        "name": "CALIFORNIA COMMUNITY VAR",
        "value": "3604346.02",
        "weight": "0.00291838",
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      {
        "name": "Black Belt Energy Gas District, Series D-3",
        "value": "3579280.00",
        "weight": "0.00289808",
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      {
        "name": "NJ TRANSPRTN TRUST-AA",
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        "weight": "0.00284038",
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      },
      {
        "name": "ID HLTH FACS AUTH-C",
        "value": "3500000.00",
        "weight": "0.00283389",
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    "b_top": [
      {
        "name": "AB Fixed Income Shares, Inc. - Government Money Market Portfolio",
        "value": "32460868.26",
        "weight": "0.01628064",
        "shared": true
      },
      {
        "name": "LAMAR TX ISD/AGM 5.5% 2/15/58",
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        "weight": "0.01019877",
        "shared": false
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      {
        "name": "San Francisco (City & County of), CA Airport Commission (San Francisco International Airport), Series 2019 A, RB",
        "value": "17508563.50",
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      {
        "name": "IL ST TOLL HWY AUTH-A",
        "value": "16164840.00",
        "weight": "0.00810742",
        "shared": false
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      {
        "name": "TACOMA WA ELEC SYS REVENUE",
        "value": "15805586.37",
        "weight": "0.00792724",
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      {
        "name": "NY NYTTRN 5.5 06/30/2060",
        "value": "15107103.52",
        "weight": "0.00757692",
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      {
        "name": "PVT CLGS & UNIV AUTH-",
        "value": "12874233.90",
        "weight": "0.00645703",
        "shared": true
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      {
        "name": "CALIFORNIA ST MUNI FIN AUTH REVENUE",
        "value": "12452848.98",
        "weight": "0.00624568",
        "shared": false
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      {
        "name": "District of Columbia Income Tax, Series 2024A",
        "value": "12305277.60",
        "weight": "0.00617167",
        "shared": false
      },
      {
        "name": "SAN DIEGO CNTY CA REGL ARPT AUTH AIRPORT REVENUE",
        "value": "11943235.04",
        "weight": "0.00599009",
        "shared": false
      },
      {
        "name": "WA PTSGEN 5 08/01/2047",
        "value": "11526536.57",
        "weight": "0.00578110",
        "shared": false
      },
      {
        "name": "MIAMI-DADE CNTY FL AVIATION REVENUE",
        "value": "11358836.00",
        "weight": "0.00569699",
        "shared": false
      },
      {
        "name": "PASCO CO-B-REV",
        "value": "10944025.00",
        "weight": "0.00548894",
        "shared": true
      },
      {
        "name": "MO HEFA EDL 5.50% 12/1/2048",
        "value": "10753764.00",
        "weight": "0.00539351",
        "shared": false
      },
      {
        "name": "SALT RIVER-SER B",
        "value": "10663065.00",
        "weight": "0.00534802",
        "shared": true
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING REGD B/E AMT 6.00000000",
        "value": "10628188.00",
        "weight": "0.00533053",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
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        "weight": "0.00529337",
        "shared": false
      },
      {
        "name": "LOS ANGELES-D-REF-REV",
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        "weight": "0.00528813",
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      },
      {
        "name": "Indianapolis Local Public Improvement Bond Bank, Series 2023, RB",
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        "weight": "0.00524073",
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      },
      {
        "name": "MASS CMNWLTH-A",
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        "shared": false
      },
      {
        "name": "CHICAGO IL O'HARE INTERNATIONAL ARPT REVENUE",
        "value": "10392449.63",
        "weight": "0.00521230",
        "shared": false
      },
      {
        "name": "MTRO WA DC ARPT 5% 10/1/46 @",
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        "weight": "0.00516659",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST DEV FIN AGY REVENUE",
        "value": "10057722.00",
        "weight": "0.00504442",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING AUTH UPMC REVENUE",
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        "weight": "0.00499481",
        "shared": true
      },
      {
        "name": "PITTSBURGH WTR/SWR",
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        "weight": "0.00498814",
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      },
      {
        "name": "MANTECA CA UNIF SCH DIST SPL TAX",
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      },
      {
        "name": "TOBACCO SETTLEMENT FING CORP N TOBGEN 06/46 FIXED 5",
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      },
      {
        "name": "UNIV OF TOLEDO OH",
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      },
      {
        "name": "State of Illinois, Series D",
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      {
        "name": "STATE OF NEW JERSEY 5.0% 06-15-42",
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        "weight": "0.00446856",
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      },
      {
        "name": "NEW YORK ST PWR AUTH GREEN TRA NYSPWR 11/48 FIXED OID 5",
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      },
      {
        "name": "Chandler Industrial Development Authority, Series 2019",
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      },
      {
        "name": "Maricopa County Special Health Care District, Arizona, General Obligation Bonds, Series 2018C",
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      },
      {
        "name": "CUYAHOGA HOSP 5% 2/15/2042",
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      },
      {
        "name": "State of Hawaii Airports System Revenue",
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      {
        "name": "State of Connecticut Special Tax, Series A",
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      {
        "name": "NFA 2022-1 A 4.375% 09-20-36",
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      {
        "name": "Sacramento County Water Financing Authority",
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      {
        "name": "CHARLOTTE NC ARPT REVENUE",
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      {
        "name": "NJ TRANSPRTN TRUST-BB",
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      {
        "name": "NY TRANSPRTN DEV -AMT",
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        "name": "WI PUBTRN 5.75 12/31/2065",
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        "name": "NJ TRANSPRTN TRUST-AA",
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      {
        "name": "NYC TRANSITIONAL-A-1",
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      {
        "name": "GEISINGER PA AUTH HLTH SYS REVENUE",
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      },
      {
        "name": "CLARK CNTY NV SCH DIST",
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      },
      {
        "name": "MAIN STR NAT GA 5% MT",
        "value": "6440576.40",
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      },
      {
        "name": "PUBLIC FIN AUTH WI REVENUE",
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      },
      {
        "name": "Build NYC Resource Corp., Series 2015",
        "value": "6368460.62",
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      },
      {
        "name": "NY TRANS CORP 0% 12/31/2054 @",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-032462",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/3794/000141036826032462/0001410368-26-032462-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-040395",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/798737/000141036826040395/0001410368-26-040395-index.htm"
    }
  ]
}