{
  "page": "compare",
  "query": {
    "a": "ATTYX",
    "b": "SBTOX"
  },
  "retrieved_at": "2026-07-07T18:06:07+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": "Tax-Aware Overlay B Portfolio",
    "ticker": "SBTOX",
    "slug": "SBTOX",
    "series_id": "S000027650",
    "html_url": "https://fundwatcher.app/funds/SBTOX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1165972360041269722476265841",
    "coverage_b_by_a": "0.1165972360041269722476265838",
    "shared_count": 70,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "AB Fixed Income Shares, Inc. - Government Money Market Portfolio",
        "value": "35927244.53",
        "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",
        "value": "10576049.00",
        "weight": "0.00856325",
        "shared": false
      },
      {
        "name": "COLUMBUS REGL ARPT-A",
        "value": "10574579.00",
        "weight": "0.00856206",
        "shared": false
      },
      {
        "name": "MTRO WA DC ARPT 5.5% 10/1/54@",
        "value": "10460039.00",
        "weight": "0.00846932",
        "shared": false
      },
      {
        "name": "Washington Metropolitan Area Transit Authority, Series 2023A",
        "value": "10422432.00",
        "weight": "0.00843887",
        "shared": false
      },
      {
        "name": "MASSACHUSETTS ST MAS 12/54 FIXED 5",
        "value": "10342691.00",
        "weight": "0.00837431",
        "shared": false
      },
      {
        "name": "NEW YORK ST TWY -C",
        "value": "10114276.00",
        "weight": "0.00818936",
        "shared": false
      },
      {
        "name": "INDIANA ST FIN AUTH HLTH FAC REVENUE",
        "value": "9554533.24",
        "weight": "0.00773615",
        "shared": false
      },
      {
        "name": "Hillsborough County Industrial Development Authority",
        "value": "8550000.00",
        "weight": "0.00692279",
        "shared": false
      },
      {
        "name": "PORT SEATTLE 5% 10/1/2040@",
        "value": "7690118.80",
        "weight": "0.00622656",
        "shared": false
      },
      {
        "name": "BAY AREA TOLL-H",
        "value": "7500000.00",
        "weight": "0.00607263",
        "shared": false
      },
      {
        "name": "District of Columbia Income Tax Revenue (TOBs)",
        "value": "6825499.72",
        "weight": "0.00552649",
        "shared": false
      },
      {
        "name": "NY TRANSPRTN DEV CORP",
        "value": "6681910.65",
        "weight": "0.00541023",
        "shared": false
      },
      {
        "name": "LOS ANGELES CA WSTWTR SYS REVENUE",
        "value": "6542041.74",
        "weight": "0.00529698",
        "shared": false
      },
      {
        "name": "MET WASHINGTON DC ARPTS AUTH DULLES TOLL ROAD REVENUE",
        "value": "6356210.00",
        "weight": "0.00514652",
        "shared": false
      },
      {
        "name": "COLORADO ST EDUC LOAN PROGRAM",
        "value": "6217089.12",
        "weight": "0.00503387",
        "shared": true
      },
      {
        "name": "MIAMI-DADE CNTY FL AVIATION REVENUE",
        "value": "6195581.46",
        "weight": "0.00501646",
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      },
      {
        "name": "State of Colorado, Series B",
        "value": "6067489.20",
        "weight": "0.00491275",
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      {
        "name": "PVT CLGS & UNIV AUTH-",
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        "weight": "0.00469937",
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      {
        "name": "Grand Traverse County Hospital Finance Authority, Series 2019 C",
        "value": "5800000.00",
        "weight": "0.00469616",
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      {
        "name": "QUINCY MA",
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        "weight": "0.00460813",
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      {
        "name": "WI PUBTRN 5.75 12/31/2065",
        "value": "5635884.79",
        "weight": "0.00456328",
        "shared": false
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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",
        "value": "5428533.50",
        "weight": "0.00439539",
        "shared": true
      },
      {
        "name": "District of Columbia (Green Bonds), Series 2022 A, RB",
        "value": "5337580.63",
        "weight": "0.00432175",
        "shared": false
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      {
        "name": "LOS ANGELES-D-REF-REV",
        "value": "5060426.08",
        "weight": "0.00409734",
        "shared": false
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      {
        "name": "MIAMI-DADE CNTY FL AVIATION REVENUE",
        "value": "5041995.06",
        "weight": "0.00408242",
        "shared": false
      },
      {
        "name": "UNITED AIRLINES INC 5.5% 07-15-38",
        "value": "5032630.36",
        "weight": "0.00407484",
        "shared": false
      },
      {
        "name": "COBB COUNTY SCHOOL DISTRICT",
        "value": "4821914.05",
        "weight": "0.00390422",
        "shared": true
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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",
        "value": "4486240.80",
        "weight": "0.00363243",
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      {
        "name": "NJ TRANSPRTN TRUST-A",
        "value": "4307831.25",
        "weight": "0.00348798",
        "shared": false
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      {
        "name": "TN TNSUTL 5 11/01/2034",
        "value": "4250010.08",
        "weight": "0.00344116",
        "shared": false
      },
      {
        "name": "FEDERAL HOME LOAN MTGE CORP MF VARIABLE RATE CTFS",
        "value": "4174927.87",
        "weight": "0.00338037",
        "shared": true
      },
      {
        "name": "PENNSYLVANIA ST",
        "value": "4127398.80",
        "weight": "0.00334189",
        "shared": true
      },
      {
        "name": "WI PUBTRN 5.75 06/30/2060",
        "value": "4126895.49",
        "weight": "0.00334148",
        "shared": false
      },
      {
        "name": "Southeast Alabama Gas Supply District (The), Series A",
        "value": "4095733.71",
        "weight": "0.00331625",
        "shared": false
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      {
        "name": "ANCHORAGE MUNICIPLITY",
        "value": "4091193.60",
        "weight": "0.00331257",
        "shared": false
      },
      {
        "name": "BLACK BELT ENERGY GAS DISTRICT (MPT) 5.0% 03-01-55",
        "value": "4066204.14",
        "weight": "0.00329234",
        "shared": false
      },
      {
        "name": "DESERTXPRESS ENTERPRISES LLC (MPT) 3.5% 01-01-65",
        "value": "4001887.60",
        "weight": "0.00324026",
        "shared": true
      },
      {
        "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": false
      },
      {
        "name": "SAN FRANCISCO CITY & COUNTY AIRPORT COMM-SAN FRANCISCO INTERNATIONAL AIRPORT 5.25% 05-01-40",
        "value": "3794201.10",
        "weight": "0.00307210",
        "shared": false
      },
      {
        "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",
        "shared": false
      },
      {
        "name": "Black Belt Energy Gas District, Series D-3",
        "value": "3579280.00",
        "weight": "0.00289808",
        "shared": false
      },
      {
        "name": "NJ TRANSPRTN TRUST-AA",
        "value": "3508015.16",
        "weight": "0.00284038",
        "shared": false
      },
      {
        "name": "ID HLTH FACS AUTH-C",
        "value": "3500000.00",
        "weight": "0.00283389",
        "shared": false
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    ],
    "b_top": [
      {
        "name": "SPDR S&P 500 ETF Trust",
        "value": "59938586.10",
        "weight": "0.13527933",
        "shared": false
      },
      {
        "name": "AB Fixed Income Shares, Inc. - Government Money Market Portfolio",
        "value": "32626885.84",
        "weight": "0.07363776",
        "shared": true
      },
      {
        "name": "ISH CORE EAFE",
        "value": "16678070.31",
        "weight": "0.03764183",
        "shared": false
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      {
        "name": "USD-SOFR-OIS Compound---20350226",
        "value": "9079736.77",
        "weight": "0.02049265",
        "shared": true
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      {
        "name": "PATRIOTS EN GRP 5.25% MT",
        "value": "5337518.50",
        "weight": "0.01204660",
        "shared": false
      },
      {
        "name": "State of Colorado, Series B",
        "value": "5030445.00",
        "weight": "0.01135354",
        "shared": true
      },
      {
        "name": "Sacramento County Water Financing Authority",
        "value": "4888879.46",
        "weight": "0.01103403",
        "shared": false
      },
      {
        "name": "WASTE MANAGEMENT INC (MPT) 2.4% 10-01-44",
        "value": "4567728.33",
        "weight": "0.01030921",
        "shared": false
      },
      {
        "name": "ONE BRYANT PARK LLC",
        "value": "4314704.86",
        "weight": "0.00973814",
        "shared": false
      },
      {
        "name": "NORTH BROWARD FL HOSP DIST",
        "value": "3704728.50",
        "weight": "0.00836144",
        "shared": false
      },
      {
        "name": "TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX",
        "value": "3652309.85",
        "weight": "0.00824314",
        "shared": false
      },
      {
        "name": "SOUTH LYON MI CMNTY SCHS",
        "value": "3646835.92",
        "weight": "0.00823078",
        "shared": false
      },
      {
        "name": "ZOETIS INC CFD",
        "value": "3598903.40",
        "weight": "0.00812260",
        "shared": true
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING REGD B/E AMT 5.50000000",
        "value": "3500711.28",
        "weight": "0.00790099",
        "shared": false
      },
      {
        "name": "KY ST ECON DEV-A",
        "value": "3480466.96",
        "weight": "0.00785529",
        "shared": false
      },
      {
        "name": "Puerto Rico Industrial Tourist Educational Medical & Environmental Control Facilities Financing Authority, Series 2000 B",
        "value": "3476044.97",
        "weight": "0.00784531",
        "shared": true
      },
      {
        "name": "ZURN ELKAY WATER SOLUTIONS CORP",
        "value": "3374105.53",
        "weight": "0.00761524",
        "shared": false
      },
      {
        "name": "GTR ORLANDO FL AVIATION AUTH ARPT FACS REVENUE",
        "value": "3253291.80",
        "weight": "0.00734257",
        "shared": false
      },
      {
        "name": "TX TMGUTL 01/01/2054",
        "value": "3077105.77",
        "weight": "0.00694492",
        "shared": false
      },
      {
        "name": "CUYAHOGA CO HOSP",
        "value": "3031899.60",
        "weight": "0.00684289",
        "shared": false
      },
      {
        "name": "NY LIBERTY DEV CORP",
        "value": "2618319.22",
        "weight": "0.00590946",
        "shared": false
      },
      {
        "name": "TOBACCO SETTLEMENT FING CORP NJ",
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      },
      {
        "name": "ATLANTA GA ARPT REVENUE REGD B/E AMT 5.00000000",
        "value": "2516110.93",
        "weight": "0.00567878",
        "shared": false
      },
      {
        "name": "PITTSBURGH WTR/SWR",
        "value": "2481743.50",
        "weight": "0.00560121",
        "shared": true
      },
      {
        "name": "CSCDA Community Improvement Authority, Series 2021 A-1",
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        "weight": "0.00515508",
        "shared": false
      },
      {
        "name": "California Community Choice Financing Authority, Series 2023 B-2",
        "value": "2225026.32",
        "weight": "0.00502181",
        "shared": true
      },
      {
        "name": "MIAMI-DADE CNTY FL AVIATION REVENUE",
        "value": "2215733.60",
        "weight": "0.00500083",
        "shared": true
      },
      {
        "name": "MASSACHUSETTS ST WTR RESOURCES AUTH",
        "value": "2203369.00",
        "weight": "0.00497293",
        "shared": false
      },
      {
        "name": "SAN JOAQUIN VLY CLEAN ENERGY AUTH CA CLEAN ENERGY REVENUE",
        "value": "2177978.60",
        "weight": "0.00491562",
        "shared": true
      },
      {
        "name": "UNIV WI HOSP CLINIC-B",
        "value": "2170499.00",
        "weight": "0.00489874",
        "shared": false
      },
      {
        "name": "MAIN STR NAT GA 5% MT",
        "value": "2110574.00",
        "weight": "0.00476349",
        "shared": false
      },
      {
        "name": "California (State of) Community Choice Financing Authority (Green Bonds), Series 2023 D, RB",
        "value": "2091496.60",
        "weight": "0.00472044",
        "shared": false
      },
      {
        "name": "WHITING IN ENVRNMNTL FACS REVE REGD V/R B/E AMT 4.40000000",
        "value": "2081036.80",
        "weight": "0.00469683",
        "shared": true
      },
      {
        "name": "MICHIGAN ST STRATEGIC FUND LTD REGD B/E AMT 5.00000000",
        "value": "2066646.80",
        "weight": "0.00466435",
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      },
      {
        "name": "Black Belt Energy Gas District, Series D",
        "value": "2057988.55",
        "weight": "0.00464481",
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      },
      {
        "name": "MUNIBOND",
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        "weight": "0.00458579",
        "shared": true
      },
      {
        "name": "Southeast Energy Authority, Alabama, Commodity Supply Revenue Bonds, Project 2, Series 2021B-1",
        "value": "2009830.00",
        "weight": "0.00453612",
        "shared": false
      },
      {
        "name": "MTRO WA DC ARPT 5% 10/1/2030@",
        "value": "1995590.35",
        "weight": "0.00450398",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING AUTH UPMC REVENUE",
        "value": "1992451.60",
        "weight": "0.00449689",
        "shared": true
      },
      {
        "name": "BAY AREA TOLL AUTHORITY (MPT) FRN 04-01-56",
        "value": "1986874.40",
        "weight": "0.00448431",
        "shared": false
      },
      {
        "name": "TOBACCO SETTLEMENT FIN AUTH WV TOBGEN 06/49 FIXED 4.875",
        "value": "1986776.91",
        "weight": "0.00448409",
        "shared": false
      },
      {
        "name": "Bay Area Toll Authority",
        "value": "1974076.00",
        "weight": "0.00445542",
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      },
      {
        "name": "NFA 2022-1 A 4.375% 09-20-36",
        "value": "1910405.17",
        "weight": "0.00431172",
        "shared": true
      },
      {
        "name": "California (State of) Housing Finance Agency (Social Certificates), Series 2021-2A, Revenue Ctfs.",
        "value": "1884069.97",
        "weight": "0.00425228",
        "shared": true
      },
      {
        "name": "New Hampshire (State of) Business Finance Authority (Social Bonds), Series 2022-2A, RB",
        "value": "1875889.63",
        "weight": "0.00423382",
        "shared": true
      },
      {
        "name": "New York Transportation Development Corp. (Terminal 4 John F. Kennedy International Airport), Series 2022, RB",
        "value": "1826969.80",
        "weight": "0.00412341",
        "shared": false
      },
      {
        "name": "California (State of) Housing Finance Agency, Series 2021-1A, Revenue Ctfs.",
        "value": "1814036.03",
        "weight": "0.00409422",
        "shared": false
      },
      {
        "name": "FRETE 2019-M051 A",
        "value": "1800506.52",
        "weight": "0.00406368",
        "shared": false
      },
      {
        "name": "Los Angeles (City of), CA, Series 2025, RN",
        "value": "1800325.08",
        "weight": "0.00406327",
        "shared": true
      },
      {
        "name": "ZSCALER INC",
        "value": "1763440.78",
        "weight": "0.00398003",
        "shared": false
      }
    ]
  },
  "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": "0001410368-26-051289",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/832808/000141036826051289/0001410368-26-051289-index.htm"
    }
  ]
}