{
  "page": "compare",
  "query": {
    "a": "HCASX",
    "b": "SPMB"
  },
  "retrieved_at": "2026-07-07T19:08:01+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 U.S. Mortgage/Asset Backed Fixed Income Securities Portfolio",
    "ticker": "HCASX",
    "slug": "HCASX",
    "series_id": "S000029854",
    "html_url": "https://fundwatcher.app/funds/HCASX/"
  },
  "fund_b": {
    "name": "State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF",
    "ticker": "SPMB",
    "slug": "SPMB",
    "series_id": "S000022922",
    "html_url": "https://fundwatcher.app/funds/SPMB/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1476302914654755707105196237",
    "coverage_b_by_a": "0.1476302914654755707105196240",
    "shared_count": 438,
    "as_of": {
      "a": "2025-12-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "Vanguard Scottsdale Funds INTERMEDIATE-TERM TREASURY",
        "value": "32416616.44",
        "weight": "0.11676801",
        "shared": false
      },
      {
        "name": "SS INST TREAS PLUS MM FUN",
        "value": "22564754.30",
        "weight": "0.08128058",
        "shared": false
      },
      {
        "name": "ISHARES US TREASURY BOND ETF",
        "value": "6004114.13",
        "weight": "0.02162744",
        "shared": false
      },
      {
        "name": "FNCL 2 1/26",
        "value": "2000592.77",
        "weight": "0.00720634",
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      },
      {
        "name": "FNCL 6 1/26",
        "value": "1488402.35",
        "weight": "0.00536138",
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      },
      {
        "name": "FNCL 2.5 1/26",
        "value": "1457827.15",
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      },
      {
        "name": "FNCL 5.5 1/26",
        "value": "1166216.79",
        "weight": "0.00420083",
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      },
      {
        "name": "FNCL 3 1/26",
        "value": "1061578.13",
        "weight": "0.00382391",
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      },
      {
        "name": "G2 MA7704",
        "value": "858755.21",
        "weight": "0.00309333",
        "shared": true
      },
      {
        "name": "FNCL 4 1/26",
        "value": "758625.00",
        "weight": "0.00273265",
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      },
      {
        "name": "G2SF 5 1/26",
        "value": "723045.90",
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      },
      {
        "name": "FNCL 4.5 1/26",
        "value": "683101.57",
        "weight": "0.00246060",
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      },
      {
        "name": "G2SF 3 1/26",
        "value": "629781.25",
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      },
      {
        "name": "G2 MB0025",
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      },
      {
        "name": "G2 MB0742",
        "value": "607306.44",
        "weight": "0.00218758",
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      },
      {
        "name": "G2SF 6 1/25",
        "value": "585781.25",
        "weight": "0.00211004",
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      },
      {
        "name": "Government National Mortgage Association, TBA",
        "value": "582609.38",
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      },
      {
        "name": "G2 MB0090",
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      },
      {
        "name": "G2 MA8428",
        "value": "563934.25",
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      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "556896.48",
        "weight": "0.00200600",
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      },
      {
        "name": "FNCL 5 1/26",
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      {
        "name": "G2 MA7589",
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        "name": "G2 MA7417",
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      },
      {
        "name": "G2SF 4 1/26",
        "value": "543105.47",
        "weight": "0.00195632",
        "shared": false
      },
      {
        "name": "Freddie Mac Pool",
        "value": "520588.65",
        "weight": "0.00187521",
        "shared": false
      },
      {
        "name": "FNCL 6.5 1/26",
        "value": "519628.91",
        "weight": "0.00187176",
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      },
      {
        "name": "FNCI 2 1/26",
        "value": "509287.11",
        "weight": "0.00183450",
        "shared": false
      },
      {
        "name": "Federal National Mortgage Association, Inc.",
        "value": "506323.42",
        "weight": "0.00182383",
        "shared": false
      },
      {
        "name": "FEDERAL HOME LOAN MORTGAGE CORPORATION",
        "value": "490040.83",
        "weight": "0.00176518",
        "shared": false
      },
      {
        "name": "FNMA POOL CB7651 FN 12/53 FIXED 6.5",
        "value": "486517.66",
        "weight": "0.00175249",
        "shared": false
      },
      {
        "name": "FNCL 3.5 1/26",
        "value": "485501.95",
        "weight": "0.00174883",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "482299.81",
        "weight": "0.00173729",
        "shared": false
      },
      {
        "name": "G2SF 3.5 1/26",
        "value": "477750.00",
        "weight": "0.00172090",
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      },
      {
        "name": "G2 MA8877",
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        "weight": "0.00170705",
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      },
      {
        "name": "G2 MB0092",
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        "weight": "0.00165410",
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      },
      {
        "name": "FR SD8214",
        "value": "434998.90",
        "weight": "0.00156691",
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      },
      {
        "name": "FR SD6764",
        "value": "434953.16",
        "weight": "0.00156675",
        "shared": false
      },
      {
        "name": "FNMA UMBS, 30 Year",
        "value": "434007.16",
        "weight": "0.00156334",
        "shared": false
      },
      {
        "name": "G2 MB0145",
        "value": "425112.96",
        "weight": "0.00153130",
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      },
      {
        "name": "UMBS",
        "value": "423732.87",
        "weight": "0.00152633",
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      },
      {
        "name": "G2 MB0146",
        "value": "423727.47",
        "weight": "0.00152631",
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      },
      {
        "name": "FN CB9309",
        "value": "421997.76",
        "weight": "0.00152008",
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      },
      {
        "name": "FN MA5585",
        "value": "420699.27",
        "weight": "0.00151540",
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      },
      {
        "name": "Freddie Mac Pool",
        "value": "420280.29",
        "weight": "0.00151389",
        "shared": true
      },
      {
        "name": "UMBS",
        "value": "420228.57",
        "weight": "0.00151371",
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      },
      {
        "name": "FR SD8505",
        "value": "419146.95",
        "weight": "0.00150981",
        "shared": false
      },
      {
        "name": "FR SD8491",
        "value": "417776.13",
        "weight": "0.00150487",
        "shared": false
      },
      {
        "name": "Federal National Mortgage Association, Inc.",
        "value": "411842.14",
        "weight": "0.00148350",
        "shared": false
      },
      {
        "name": "FN MA5107",
        "value": "409828.87",
        "weight": "0.00147625",
        "shared": false
      },
      {
        "name": "Federal National Mortgage Association, Inc.",
        "value": "408992.14",
        "weight": "0.00147323",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "State Street Navigator Securities Lending Portfolio II",
        "value": "517582702.49",
        "weight": "0.07097566",
        "shared": false
      },
      {
        "name": "FR RQ0094",
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      },
      {
        "name": "FR RQ0041",
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      {
        "name": "FN MA4547",
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      {
        "name": "FR SD8212",
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      {
        "name": "G2 MB0424",
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      },
      {
        "name": "FR SD8475",
        "value": "41408699.65",
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      },
      {
        "name": "FNCL 3.5 4/26",
        "value": "41145147.70",
        "weight": "0.00564220",
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      },
      {
        "name": "FN MA4701",
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      },
      {
        "name": "G2SF 5 4/26",
        "value": "35753562.75",
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      {
        "name": "FN MA4465",
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      },
      {
        "name": "UMBS Pool, 30 Year",
        "value": "33306596.15",
        "weight": "0.00456730",
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      },
      {
        "name": "FNCL 2 4/26",
        "value": "33279389.70",
        "weight": "0.00456357",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Securities",
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      },
      {
        "name": "FR SD8193",
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      },
      {
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      },
      {
        "name": "G2SF 5.5 4/25",
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      },
      {
        "name": "FR RQ0056",
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      {
        "name": "FR SD8454",
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      {
        "name": "FR SD8167",
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      },
      {
        "name": "G2 MB0871",
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        "weight": "0.00406161",
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      },
      {
        "name": "Fannie Mae Pool",
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      },
      {
        "name": "UMBS, 30 Year",
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      {
        "name": "FR RQ0040",
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      {
        "name": "FN MA4437",
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      {
        "name": "Freddie Mac Pool",
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      },
      {
        "name": "G2 MB0365",
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      {
        "name": "G2 MB0485",
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        "name": "FNMA 30YR 5.5% 10/01/2053#CB7336",
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      {
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      {
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      {
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001004726-26-001165",
      "as_of": "2025-12-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/934563/000100472626001165/0001004726-26-001165-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-055567",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1064642/000141036826055567/0001410368-26-055567-index.htm"
    }
  ]
}