{
  "page": "compare",
  "query": {
    "a": "VGSH",
    "b": "LUTAX"
  },
  "retrieved_at": "2026-07-07T18:15:06+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": "VANGUARD SHORT-TERM TREASURY INDEX FUND",
    "ticker": "VGSH",
    "slug": "VGSH",
    "series_id": "S000026859",
    "html_url": "https://fundwatcher.app/funds/VGSH/"
  },
  "fund_b": {
    "name": "Columbia U.S. Treasury Index Fund",
    "ticker": "LUTAX",
    "slug": "LUTAX",
    "series_id": "S000012098",
    "html_url": "https://fundwatcher.app/funds/LUTAX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.3397384928166182413850039276",
    "coverage_b_by_a": "0.3397384928166182413850039275",
    "shared_count": 90,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "US TREASURY N/B",
        "value": "726518211.22",
        "weight": "0.02242190",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "440252580.31",
        "weight": "0.01358713",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "425268956.35",
        "weight": "0.01312471",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "419988315.95",
        "weight": "0.01296174",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "418501312.54",
        "weight": "0.01291584",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "416484116.25",
        "weight": "0.01285359",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "415950651.25",
        "weight": "0.01283712",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "415696506.84",
        "weight": "0.01282928",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "414564701.28",
        "weight": "0.01279435",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "411543785.17",
        "weight": "0.01270112",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "411059873.59",
        "weight": "0.01268618",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "409746682.34",
        "weight": "0.01264566",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "407200695.17",
        "weight": "0.01256708",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "407006359.38",
        "weight": "0.01256108",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "405326526.41",
        "weight": "0.01250924",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "405317375.31",
        "weight": "0.01250896",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "404249738.08",
        "weight": "0.01247601",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "402673792.89",
        "weight": "0.01242737",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "402623543.12",
        "weight": "0.01242582",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "399799164.84",
        "weight": "0.01233866",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "398721305.06",
        "weight": "0.01230539",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "398369452.75",
        "weight": "0.01229453",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "398006618.39",
        "weight": "0.01228333",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "395808244.47",
        "weight": "0.01221549",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "395713208.11",
        "weight": "0.01221255",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "392964665.63",
        "weight": "0.01212773",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "392780422.81",
        "weight": "0.01212204",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "390122326.66",
        "weight": "0.01204001",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "389499105.94",
        "weight": "0.01202077",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "387525985.61",
        "weight": "0.01195988",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "387205615.92",
        "weight": "0.01194999",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "386372234.35",
        "weight": "0.01192427",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "385601489.88",
        "weight": "0.01190048",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "385268528.75",
        "weight": "0.01189021",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "385182537.60",
        "weight": "0.01188756",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "383983577.03",
        "weight": "0.01185055",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "380729479.80",
        "weight": "0.01175012",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "380395494.98",
        "weight": "0.01173982",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "377442024.33",
        "weight": "0.01164867",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "377284631.07",
        "weight": "0.01164381",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "375716951.52",
        "weight": "0.01159543",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "372303607.97",
        "weight": "0.01149008",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "371814144.16",
        "weight": "0.01147498",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "367456972.50",
        "weight": "0.01134051",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "364587472.50",
        "weight": "0.01125195",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "363098552.94",
        "weight": "0.01120600",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "362709735.94",
        "weight": "0.01119400",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "357794456.81",
        "weight": "0.01104230",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "357626519.14",
        "weight": "0.01103712",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "357038872.03",
        "weight": "0.01101898",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "US TREASURY N/B",
        "value": "7364324.69",
        "weight": "0.00902005",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "7226458.75",
        "weight": "0.00885119",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "7147239.84",
        "weight": "0.00875416",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "7137579.38",
        "weight": "0.00874232",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "7020575.63",
        "weight": "0.00859902",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "6964203.75",
        "weight": "0.00852997",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "6960873.91",
        "weight": "0.00852589",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "6878995.31",
        "weight": "0.00842560",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "6455397.66",
        "weight": "0.00790677",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "6258761.25",
        "weight": "0.00766592",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5915567.81",
        "weight": "0.00724557",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5747253.75",
        "weight": "0.00703941",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5740836.56",
        "weight": "0.00703155",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5740098.91",
        "weight": "0.00703065",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5736990.00",
        "weight": "0.00702684",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5695685.94",
        "weight": "0.00697625",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5677390.63",
        "weight": "0.00695384",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5673829.22",
        "weight": "0.00694948",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5620644.53",
        "weight": "0.00688434",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5409021.09",
        "weight": "0.00662513",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5395896.56",
        "weight": "0.00660906",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "5323278.09",
        "weight": "0.00652011",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "5262232.50",
        "weight": "0.00644534",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4656691.56",
        "weight": "0.00570366",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4434222.34",
        "weight": "0.00543117",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4429633.59",
        "weight": "0.00542555",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4358233.71",
        "weight": "0.00533810",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4329087.97",
        "weight": "0.00530240",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4311615.55",
        "weight": "0.00528100",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4212273.01",
        "weight": "0.00515932",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4190752.11",
        "weight": "0.00513296",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4188811.64",
        "weight": "0.00513058",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4179526.25",
        "weight": "0.00511921",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4179175.00",
        "weight": "0.00511878",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4170688.36",
        "weight": "0.00510839",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4150829.77",
        "weight": "0.00508406",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4147649.30",
        "weight": "0.00508017",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4129586.72",
        "weight": "0.00505804",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4129081.33",
        "weight": "0.00505742",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4125022.27",
        "weight": "0.00505245",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4110700.00",
        "weight": "0.00503491",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4110471.88",
        "weight": "0.00503463",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4105332.42",
        "weight": "0.00502834",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4082361.72",
        "weight": "0.00500020",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4079134.30",
        "weight": "0.00499625",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4067402.34",
        "weight": "0.00498188",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4064365.00",
        "weight": "0.00497816",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4042121.48",
        "weight": "0.00495091",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4040269.84",
        "weight": "0.00494865",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4038609.38",
        "weight": "0.00494661",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001021882-26-000279",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1021882/000102188226000279/0001021882-26-000279-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-033335",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/773757/000141036826033335/0001410368-26-033335-index.htm"
    }
  ]
}