{
  "page": "compare",
  "query": {
    "a": "CFSTX",
    "b": "IBTJ"
  },
  "retrieved_at": "2026-07-07T17:42:25+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": "The Short Term Government Fund",
    "ticker": "CFSTX",
    "slug": "CFSTX",
    "series_id": "S000010031",
    "html_url": "https://fundwatcher.app/funds/CFSTX/"
  },
  "fund_b": {
    "name": "iShares iBonds Dec 2029 Term Treasury ETF",
    "ticker": "IBTJ",
    "slug": "IBTJ",
    "series_id": "S000067564",
    "html_url": "https://fundwatcher.app/funds/IBTJ/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1219277950705369283770732658",
    "coverage_b_by_a": "0.1219277950705369283770732658",
    "shared_count": 6,
    "as_of": {
      "a": "2026-04-30",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "US TREASURY N/B",
        "value": "2791578.13",
        "weight": "0.09984048",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "2400878.90",
        "weight": "0.08586717",
        "shared": true
      },
      {
        "name": "State Street Navigator Securities Lending Portfolio II",
        "value": "2354692.88",
        "weight": "0.08421533",
        "shared": false
      },
      {
        "name": "U.S. Treasury Bills",
        "value": "981926.39",
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      },
      {
        "name": "US TREASURY N/B",
        "value": "980781.25",
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      },
      {
        "name": "US TREASURY N/B",
        "value": "766312.50",
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      },
      {
        "name": "Fannie Mae REMICS",
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      },
      {
        "name": "US TREASURY N/B",
        "value": "698359.38",
        "weight": "0.02497675",
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      },
      {
        "name": "Freddie Mac Pool",
        "value": "663673.17",
        "weight": "0.02373620",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "602437.50",
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      },
      {
        "name": "US TREASURY N/B",
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      },
      {
        "name": "US TREASURY N/B",
        "value": "590121.10",
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      },
      {
        "name": "U.S. Treasury Bills",
        "value": "589064.27",
        "weight": "0.02106782",
        "shared": false
      },
      {
        "name": "GOVERNMENT NATIONAL MORTGAGE ASSOCIATION GNR 2022-199 A",
        "value": "547162.51",
        "weight": "0.01956921",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "499687.81",
        "weight": "0.01787128",
        "shared": false
      },
      {
        "name": "Federal Home Loan Banks",
        "value": "498548.05",
        "weight": "0.01783052",
        "shared": false
      },
      {
        "name": "U.S. Treasury Bills",
        "value": "496244.53",
        "weight": "0.01774813",
        "shared": false
      },
      {
        "name": "Ginnie Mae II Pool",
        "value": "482505.78",
        "weight": "0.01725677",
        "shared": false
      },
      {
        "name": "Government National Mortgage Association",
        "value": "480866.97",
        "weight": "0.01719815",
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      },
      {
        "name": "Freddie Mac Non Gold Pool",
        "value": "478763.77",
        "weight": "0.01712293",
        "shared": false
      },
      {
        "name": "Freddie Mac REMICS",
        "value": "424946.85",
        "weight": "0.01519818",
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      },
      {
        "name": "Freddie Mac REMICS",
        "value": "421801.90",
        "weight": "0.01508570",
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      },
      {
        "name": "Freddie Mac REMICS",
        "value": "395597.94",
        "weight": "0.01414852",
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      },
      {
        "name": "Fannie Mae REMICS",
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      },
      {
        "name": "Government National Mortgage Association",
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      {
        "name": "US TREASURY N/B",
        "value": "351927.73",
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      },
      {
        "name": "Government National Mortgage Association",
        "value": "308983.33",
        "weight": "0.01105075",
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      },
      {
        "name": "FNMA, REMIC, Series 2020-45, Class CB",
        "value": "304614.20",
        "weight": "0.01089449",
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      },
      {
        "name": "FNMA GTD MTG PASS THRU CTF 2% 05/25/2045",
        "value": "303817.17",
        "weight": "0.01086599",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "295772.46",
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      },
      {
        "name": "US TREASURY N/B",
        "value": "278929.69",
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      },
      {
        "name": "GOVERNMENT NATIONAL MORTGAGE ASSOCIATION GNR 2023-49 A",
        "value": "240501.96",
        "weight": "0.00860153",
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      },
      {
        "name": "GCAT Trust 2021-NQM6",
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        "weight": "0.00787596",
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      },
      {
        "name": "Barclays Mortgage Loan Trust, Series 2021-NQM1, Class A1",
        "value": "207120.99",
        "weight": "0.00740766",
        "shared": false
      },
      {
        "name": "CSMC 2021-NQM5 TRUST SER 2021-NQM5 CL A1 V/R REGD 144A P/P 0.93800000",
        "value": "201600.94",
        "weight": "0.00721024",
        "shared": false
      },
      {
        "name": "FN MA1959",
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        "weight": "0.00702775",
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      },
      {
        "name": "Fannie Mae REMICS",
        "value": "191018.97",
        "weight": "0.00683177",
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      },
      {
        "name": "Government National Mortgage Association",
        "value": "186673.28",
        "weight": "0.00667635",
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      },
      {
        "name": "Fannie Mae Pool",
        "value": "181581.03",
        "weight": "0.00649423",
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      },
      {
        "name": "FEDERAL NAT MTG ASN GTD REM PA 2% 12/25/2043",
        "value": "181453.32",
        "weight": "0.00648966",
        "shared": false
      },
      {
        "name": "Government National Mortgage Association",
        "value": "173223.19",
        "weight": "0.00619531",
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      },
      {
        "name": "VERUS SECURITIZATION TRUST VERUS 2021 2 A1 144A",
        "value": "166899.59",
        "weight": "0.00596915",
        "shared": false
      },
      {
        "name": "Fannie Mae REMICS",
        "value": "156730.76",
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      },
      {
        "name": "Fannie Mae REMICS",
        "value": "151312.77",
        "weight": "0.00541168",
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      },
      {
        "name": "FNMA, REMIC, Series 2010-109, Class M",
        "value": "151076.44",
        "weight": "0.00540323",
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      },
      {
        "name": "Government National Mortgage Association",
        "value": "147155.18",
        "weight": "0.00526299",
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      },
      {
        "name": "Fannie Mae REMICS",
        "value": "143210.38",
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      },
      {
        "name": "MFRA 2021-NQM2 A1",
        "value": "142836.30",
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      },
      {
        "name": "Fannie Mae Pool",
        "value": "128637.11",
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      },
      {
        "name": "Federal National Mortgage Association Series 2012-110, Class CA",
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        "name": "US TREASURY N/B",
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      },
      {
        "name": "BlackRock Cash Funds: Treasury, SL Agency Shares",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-063612",
      "as_of": "2026-04-30",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/926243/000141036826063612/0001410368-26-063612-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0002071691-26-007336",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126007336/0002071691-26-007336-index.htm"
    }
  ]
}