{
  "page": "compare",
  "query": {
    "a": "ATOIX",
    "b": "USMEX"
  },
  "retrieved_at": "2026-07-07T18:04:36+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": "abrdn Ultra Short Municipal Income Fund",
    "ticker": "ATOIX",
    "slug": "ATOIX",
    "series_id": "S000061523",
    "html_url": "https://fundwatcher.app/funds/ATOIX/"
  },
  "fund_b": {
    "name": "Columbia Ultra Short Duration Municipal Bond Fund",
    "ticker": "USMEX",
    "slug": "USMEX",
    "series_id": "S000074124",
    "html_url": "https://fundwatcher.app/funds/USMEX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.02889184090517972307192800254",
    "coverage_b_by_a": "0.02889184090517972307192800254",
    "shared_count": 6,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "Mississippi Business Finance Corp",
        "value": "55590000.00",
        "weight": "0.04645962",
        "shared": false
      },
      {
        "name": "Maryland Industrial Development Financing Authority",
        "value": "49905000.00",
        "weight": "0.04170835",
        "shared": false
      },
      {
        "name": "Harris County Cultural Education Facilities Finance Corp",
        "value": "43600000.00",
        "weight": "0.03643892",
        "shared": false
      },
      {
        "name": "JPMorgan Chase Putters/Drivers Trust",
        "value": "31690000.00",
        "weight": "0.02648508",
        "shared": false
      },
      {
        "name": "Pennsylvania Higher Educational Facilities Authority",
        "value": "26575000.00",
        "weight": "0.02221019",
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      },
      {
        "name": "Iowa Finance Authority",
        "value": "25400000.00",
        "weight": "0.02122818",
        "shared": false
      },
      {
        "name": "PEFA INC VAR",
        "value": "25296092.50",
        "weight": "0.02114134",
        "shared": false
      },
      {
        "name": "Florida Insurance Assistance Interlocal Agency Inc",
        "value": "25250000.00",
        "weight": "0.02110281",
        "shared": false
      },
      {
        "name": "HLTH BAPTIST AL 2013B V7",
        "value": "25088000.00",
        "weight": "0.02096742",
        "shared": false
      },
      {
        "name": "County of Meade KY",
        "value": "24800000.00",
        "weight": "0.02072672",
        "shared": false
      },
      {
        "name": "Arkansas Development Finance Authority",
        "value": "24314000.00",
        "weight": "0.02032055",
        "shared": false
      },
      {
        "name": "WV UNIV HLTH 18E RFLOAT V7",
        "value": "24275000.00",
        "weight": "0.02028795",
        "shared": false
      },
      {
        "name": "Sevier (County of), TN Public Building Authority (The), Series 2004, RB",
        "value": "22715000.00",
        "weight": "0.01898417",
        "shared": false
      },
      {
        "name": "JP MORGAN CHASE PUTTERS/DRIVERS TRUST VARIOUS STATES",
        "value": "22300000.00",
        "weight": "0.01863734",
        "shared": false
      },
      {
        "name": "Missouri Development Finance Board",
        "value": "22300000.00",
        "weight": "0.01863734",
        "shared": false
      },
      {
        "name": "CHTNOOGA TN COMNSPIRIT HLTH V7",
        "value": "21450000.00",
        "weight": "0.01792694",
        "shared": false
      },
      {
        "name": "CENTRL BRADFORD PROGRESS AUTHPA",
        "value": "21355000.00",
        "weight": "0.01784755",
        "shared": false
      },
      {
        "name": "MUNIBOND",
        "value": "20219138.00",
        "weight": "0.01689825",
        "shared": false
      },
      {
        "name": "TNDR OPT-FLTR-MS0041",
        "value": "20000000.00",
        "weight": "0.01671510",
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      },
      {
        "name": "Indiana Finance Authority",
        "value": "19900000.00",
        "weight": "0.01663152",
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      },
      {
        "name": "MICHIGAN ST BLDG AUTH REVENUE",
        "value": "19445000.00",
        "weight": "0.01625126",
        "shared": false
      },
      {
        "name": "Port of Corpus Christi Authority of Nueces County",
        "value": "18200000.00",
        "weight": "0.01521074",
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      },
      {
        "name": "Public Building Authority of Blount County Tennessee (The), Series 2003, RB",
        "value": "17860000.00",
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      {
        "name": "PRT ARTHR TX MTVA10D Q=SELF V7",
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        "weight": "0.01462571",
        "shared": false
      },
      {
        "name": "State of Ohio",
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        "weight": "0.01441677",
        "shared": false
      },
      {
        "name": "MUNIBOND",
        "value": "16053083.83",
        "weight": "0.01341644",
        "shared": true
      },
      {
        "name": "PRT ARTHR TX MTVA10E Q=SELF V7",
        "value": "15450000.00",
        "weight": "0.01291241",
        "shared": false
      },
      {
        "name": "MIAMI-DADE SLW 4.50% 11/1/2048 MT @",
        "value": "15016303.50",
        "weight": "0.01254995",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV",
        "value": "15003315.00",
        "weight": "0.01253910",
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      },
      {
        "name": "MUNIBOND",
        "value": "14772454.01",
        "weight": "0.01234615",
        "shared": true
      },
      {
        "name": "SOUTH CAROLINA ST PUBLIC SVC AUTH REVENUE",
        "value": "14755000.00",
        "weight": "0.01233156",
        "shared": false
      },
      {
        "name": "Massachusetts Development Finance Agency",
        "value": "14300000.00",
        "weight": "0.01195130",
        "shared": false
      },
      {
        "name": "Township of Weehawken NJ",
        "value": "13969769.82",
        "weight": "0.01167530",
        "shared": false
      },
      {
        "name": "NEW YORK NY REGD V/R B/E 2.55000000",
        "value": "13200000.00",
        "weight": "0.01103197",
        "shared": false
      },
      {
        "name": "District of Columbia",
        "value": "13000000.00",
        "weight": "0.01086481",
        "shared": false
      },
      {
        "name": "PA THO JFFRSN U 18D RFLOAT V7",
        "value": "12400000.00",
        "weight": "0.01036336",
        "shared": false
      },
      {
        "name": "REPUBLIC SERVICES INC (MPT) 3.45% 12-01-35",
        "value": "12100000.00",
        "weight": "0.01011264",
        "shared": false
      },
      {
        "name": "Bartow-Cartersville Joint Development Authority",
        "value": "12000000.00",
        "weight": "0.01002906",
        "shared": false
      },
      {
        "name": "Iowa Finance Authority",
        "value": "11665000.00",
        "weight": "0.00974908",
        "shared": false
      },
      {
        "name": "Iowa Finance Authority",
        "value": "10525000.00",
        "weight": "0.00879632",
        "shared": false
      },
      {
        "name": "NYC GO FY21-2 Q=SELF V8+",
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        "weight": "0.00858738",
        "shared": false
      },
      {
        "name": "MUNIBOND",
        "value": "10109569.00",
        "weight": "0.00844912",
        "shared": false
      },
      {
        "name": "WV NUCOR 25A-1 V7@",
        "value": "10000000.00",
        "weight": "0.00835755",
        "shared": false
      },
      {
        "name": "Town of Red Cedar WI",
        "value": "9850000.00",
        "weight": "0.00823219",
        "shared": false
      },
      {
        "name": "NY ST DORM AUTH-C",
        "value": "9800000.00",
        "weight": "0.00819040",
        "shared": false
      },
      {
        "name": "State of Ohio",
        "value": "9700000.00",
        "weight": "0.00810682",
        "shared": false
      },
      {
        "name": "Tarrant County Cultural Education Facilities Finance Corp",
        "value": "9360000.00",
        "weight": "0.00782267",
        "shared": false
      },
      {
        "name": "Citizens Memorial Hospital District, Series 2024 A",
        "value": "9040546.80",
        "weight": "0.00755568",
        "shared": false
      },
      {
        "name": "Tender Option Bond Trust Receipts/Certificates",
        "value": "8800000.00",
        "weight": "0.00735464",
        "shared": false
      },
      {
        "name": "County of Allen, Series 2025C",
        "value": "8400000.00",
        "weight": "0.00702034",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "BLKR-LI MUNI-INS",
        "value": "6174152.76",
        "weight": "0.07381279",
        "shared": true
      },
      {
        "name": "State of Maryland",
        "value": "2137708.20",
        "weight": "0.02555657",
        "shared": false
      },
      {
        "name": "FAIRFAX C VA 5% 1/1/2045 MT",
        "value": "2060633.40",
        "weight": "0.02463514",
        "shared": false
      },
      {
        "name": "Port Authority of New York and New Jersey, Consolidated, Series 246",
        "value": "2024261.40",
        "weight": "0.02420030",
        "shared": false
      },
      {
        "name": "COLORADO HOUSING AND FINANCE AUTHORITY 3.1% 10-01-27",
        "value": "2017712.60",
        "weight": "0.02412201",
        "shared": false
      },
      {
        "name": "State of Minnesota, Series 2021, GO Bonds",
        "value": "1940511.79",
        "weight": "0.02319907",
        "shared": false
      },
      {
        "name": "City of Fall River MA",
        "value": "1605172.61",
        "weight": "0.01919004",
        "shared": false
      },
      {
        "name": "WISCONSIN ST REGD N/C B/E 5.00000000",
        "value": "1550490.30",
        "weight": "0.01853631",
        "shared": false
      },
      {
        "name": "LOS ANGELES CA DEPT OF ARPTS ARPT REVENUE",
        "value": "1530032.14",
        "weight": "0.01829173",
        "shared": false
      },
      {
        "name": "PMA LEVY & AID ANTIC NTS PROGR REGD N/C B/E 5.00000000",
        "value": "1519632.75",
        "weight": "0.01816740",
        "shared": false
      },
      {
        "name": "FORT WORTH TX INDEP SCH DIST",
        "value": "1513144.22",
        "weight": "0.01808983",
        "shared": false
      },
      {
        "name": "New York (City of), NY Municipal Water Finance Authority, Series 2010 DD, VRD RB",
        "value": "1375000.00",
        "weight": "0.01643830",
        "shared": false
      },
      {
        "name": "OLENTANGY OH LOCAL SCH DIST",
        "value": "1327962.61",
        "weight": "0.01587596",
        "shared": false
      },
      {
        "name": "State of Connecticut Special Tax Revenue",
        "value": "1298035.75",
        "weight": "0.01551818",
        "shared": false
      },
      {
        "name": "Pasadena Independent School District, Series 2023B",
        "value": "1283967.38",
        "weight": "0.01534999",
        "shared": false
      },
      {
        "name": "VIRGINIA PORT AUTH",
        "value": "1108313.14",
        "weight": "0.01325003",
        "shared": false
      },
      {
        "name": "SOUTHEAST ENERGY-E",
        "value": "1089821.40",
        "weight": "0.01302895",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA ST",
        "value": "1084414.40",
        "weight": "0.01296431",
        "shared": false
      },
      {
        "name": "BLACK BELT-SER-C",
        "value": "1084126.80",
        "weight": "0.01296087",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2025A",
        "value": "1080779.80",
        "weight": "0.01292086",
        "shared": false
      },
      {
        "name": "UNIV OF TEXAS TX UNIV REVENUES",
        "value": "1068459.20",
        "weight": "0.01277357",
        "shared": false
      },
      {
        "name": "Lower Colorado River Authority, Series 2025",
        "value": "1060244.70",
        "weight": "0.01267536",
        "shared": false
      },
      {
        "name": "PENNSYLVANIA CMWLTH",
        "value": "1058196.10",
        "weight": "0.01265087",
        "shared": false
      },
      {
        "name": "TN TNSUTL 05/01/2053",
        "value": "1044476.60",
        "weight": "0.01248685",
        "shared": false
      },
      {
        "name": "DENVER CO ARPT 5% 11/15/2027 @",
        "value": "1042161.50",
        "weight": "0.01245917",
        "shared": false
      },
      {
        "name": "GTR ORLANDO FL AVIATION AUTH ARPT FACS REVENUE",
        "value": "1038375.70",
        "weight": "0.01241391",
        "shared": false
      },
      {
        "name": "BROWARD CNTY FL ARPT SYS REVEN REGD N/C B/E AMT 5.00000000",
        "value": "1037775.40",
        "weight": "0.01240674",
        "shared": false
      },
      {
        "name": "LOS ANGELES DEPARTMENT OF WATER & POWER POWER SYSTEM REVENUE 5.0% 07-01-27",
        "value": "1037422.80",
        "weight": "0.01240252",
        "shared": false
      },
      {
        "name": "CITY OF ST LOUIS MO",
        "value": "1036893.78",
        "weight": "0.01239620",
        "shared": false
      },
      {
        "name": "RI STUD LN 5% 12/1/2027 @",
        "value": "1035442.40",
        "weight": "0.01237885",
        "shared": false
      },
      {
        "name": "COUNTY OF CLARK DEPARTMENT OF AVIATION",
        "value": "1032799.90",
        "weight": "0.01234725",
        "shared": false
      },
      {
        "name": "SAN FRANCISCO CITY & COUNTY AIRPORT COMM-SAN FRANCISCO INTERNATIONAL AIRPORT 5.0% 05-01-27",
        "value": "1027805.90",
        "weight": "0.01228755",
        "shared": false
      },
      {
        "name": "ADAMS COS JT SD #28J",
        "value": "1025551.70",
        "weight": "0.01226060",
        "shared": false
      },
      {
        "name": "MUNIBOND",
        "value": "1021203.00",
        "weight": "0.01220861",
        "shared": true
      },
      {
        "name": "MONMOUTH CT NJ 3/12/27 BAN",
        "value": "1017396.40",
        "weight": "0.01216310",
        "shared": false
      },
      {
        "name": "MTRO WA DC ARPT 5% 10/1/2026 @",
        "value": "1015433.90",
        "weight": "0.01213964",
        "shared": false
      },
      {
        "name": "MANOR HSG PUBLIC FAC CORP TX M MNRMFH 11/42 ADJUSTABLE VAR",
        "value": "1011981.80",
        "weight": "0.01209837",
        "shared": false
      },
      {
        "name": "MISSISSIPPI ST BUSINESS FIN CORP SOL WST DISP REVENUE",
        "value": "1010673.80",
        "weight": "0.01208273",
        "shared": false
      },
      {
        "name": "IA GTEMED 4.5 02/01/2029",
        "value": "1010269.70",
        "weight": "0.01207790",
        "shared": false
      },
      {
        "name": "NY ST HSG FIN AGY-E",
        "value": "1008097.90",
        "weight": "0.01205194",
        "shared": false
      },
      {
        "name": "LLOYD N Y",
        "value": "1006272.70",
        "weight": "0.01203012",
        "shared": false
      },
      {
        "name": "BERGEN N Y",
        "value": "1004822.20",
        "weight": "0.01201278",
        "shared": false
      },
      {
        "name": "FRKFRT SCHUY NY 4% 7/31/2026",
        "value": "1004065.50",
        "weight": "0.01200373",
        "shared": false
      },
      {
        "name": "NEWARK NJ",
        "value": "1002924.20",
        "weight": "0.01199009",
        "shared": true
      },
      {
        "name": "NJ ST HMFA MF1 2.85% 11/1/2026",
        "value": "1002918.00",
        "weight": "0.01199001",
        "shared": false
      },
      {
        "name": "MUNIBOND",
        "value": "1000760.20",
        "weight": "0.01196422",
        "shared": true
      },
      {
        "name": "MIAMI-DADE MFH MT 4/1/2041",
        "value": "1000416.80",
        "weight": "0.01196011",
        "shared": false
      },
      {
        "name": "REPUBLIC SERVICES INC (MPT) 3.25% 04-01-34",
        "value": "1000174.60",
        "weight": "0.01195722",
        "shared": true
      },
      {
        "name": "State of Illinois, Series 2022B",
        "value": "1000119.51",
        "weight": "0.01195656",
        "shared": false
      },
      {
        "name": "NEW YORK NY",
        "value": "1000000.00",
        "weight": "0.01195513",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-030002",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1413594/000141036826030002/0001410368-26-030002-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-040874",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1352280/000141036826040874/0001410368-26-040874-index.htm"
    }
  ]
}