{
  "page": "compare",
  "query": {
    "a": "MGSIX",
    "b": "USSH"
  },
  "retrieved_at": "2026-07-07T17:53:50+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": "MFS Government Securities Fund",
    "ticker": "MGSIX",
    "slug": "MGSIX",
    "series_id": "S000000693",
    "html_url": "https://fundwatcher.app/funds/MGSIX/"
  },
  "fund_b": {
    "name": "WisdomTree 1-3 Year Laddered Treasury Fund",
    "ticker": "USSH",
    "slug": "USSH",
    "series_id": "S000084254",
    "html_url": "https://fundwatcher.app/funds/USSH/"
  },
  "overlap": {
    "coverage_a_by_b": "0.09208470001995450058611824200",
    "coverage_b_by_a": "0.09208470001995450058611824199",
    "shared_count": 4,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-02-28"
    },
    "a_top": [
      {
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        "weight": "0.04303978",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "86751392.79",
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        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "78445763.59",
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      },
      {
        "name": "US TREASURY N/B",
        "value": "71917991.51",
        "weight": "0.03443185",
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      },
      {
        "name": "MFS Institutional Money Market Portfolio, Class A",
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      },
      {
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      },
      {
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      {
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        "name": "FNCL 2 4/26",
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      {
        "name": "FHMS K057 A2",
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      {
        "name": "US TREASURY N/B",
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      {
        "name": "FN MA4562",
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      },
      {
        "name": "FHMS K066 A2",
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      {
        "name": "US TREASURY N/B",
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      {
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      },
      {
        "name": "G2 MA8268",
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      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
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      },
      {
        "name": "FHMS K062 A2",
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      {
        "name": "Federal Home Loan Mortgage Corporation",
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      {
        "name": "FR SD8507",
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      {
        "name": "UMBS",
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      {
        "name": "FHMS K059 A2",
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      },
      {
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      {
        "name": "US TREASURY N/B",
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      {
        "name": "US TREASURY N/B",
        "value": "11140201.93",
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      },
      {
        "name": "GNMA, Series 2023-135, Class FG",
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      },
      {
        "name": "FHMS K737 A2",
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      {
        "name": "GNMA, Series 2023-189, Class FG",
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      {
        "name": "GNMA, Series 2023-149, Class YF",
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      {
        "name": "Government National Mortgage Association",
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        "weight": "0.00499549",
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      },
      {
        "name": "GNMA, Series 2023-146, Class FD",
        "value": "10361255.46",
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      },
      {
        "name": "US TREASURY N/B",
        "value": "10114960.91",
        "weight": "0.00484269",
        "shared": false
      },
      {
        "name": "New Residential Mortgage Loan Trust, Series 2026-NQM3, Class A1",
        "value": "10084506.84",
        "weight": "0.00482811",
        "shared": false
      },
      {
        "name": "PMT Loan Trust, Series 2026-INV2, Class A35",
        "value": "10048507.04",
        "weight": "0.00481088",
        "shared": false
      },
      {
        "name": "FHMS K065 A2",
        "value": "10027344.72",
        "weight": "0.00480075",
        "shared": false
      },
      {
        "name": "LoanCore Issuer Ltd., Series 2021-CRE6, Class AS",
        "value": "10005940.00",
        "weight": "0.00479050",
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      },
      {
        "name": "UMBS",
        "value": "9991148.23",
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      },
      {
        "name": "G2 MA7935",
        "value": "9671285.77",
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      },
      {
        "name": "GNMA, Series 2025-177, Class FA",
        "value": "9666301.78",
        "weight": "0.00462789",
        "shared": false
      },
      {
        "name": "Government National Mortgage Association",
        "value": "9642944.89",
        "weight": "0.00461671",
        "shared": false
      },
      {
        "name": "G2 MA7880",
        "value": "9564613.12",
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      },
      {
        "name": "FN MA5353",
        "value": "9509870.03",
        "weight": "0.00455300",
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      },
      {
        "name": "Government National Mortgage Association",
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        "weight": "0.00454326",
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      },
      {
        "name": "Government National Mortgage Association",
        "value": "9418293.22",
        "weight": "0.00450915",
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      },
      {
        "name": "American Credit Acceptance Receivables Trust, Series 2026-1, Class A",
        "value": "9100074.62",
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    ],
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      {
        "name": "US TREASURY N/B",
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      {
        "name": "US TREASURY N/B",
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      {
        "name": "US TREASURY N/B",
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      {
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      {
        "name": "US TREASURY N/B",
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      {
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      {
        "name": "US TREASURY N/B",
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      {
        "name": "US TREASURY N/B",
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      {
        "name": "US TREASURY N/B",
        "value": "898895.60",
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      {
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      {
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        "value": "896370.62",
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      {
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        "value": "895616.21",
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      {
        "name": "US TREASURY N/B",
        "value": "893965.46",
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      {
        "name": "US TREASURY N/B",
        "value": "890224.66",
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      {
        "name": "US TREASURY N/B",
        "value": "889595.93",
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      {
        "name": "US TREASURY N/B",
        "value": "889259.48",
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      {
        "name": "US TREASURY N/B",
        "value": "887653.66",
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      {
        "name": "US TREASURY N/B",
        "value": "883680.05",
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      {
        "name": "US TREASURY N/B",
        "value": "882434.41",
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      },
      {
        "name": "DREYFUS TRSY OBLIG CASH M",
        "value": "34609.40",
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      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-008227",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/356349/000207169126008227/0002071691-26-008227-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000940400-26-015401",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1350487/000094040026015401/0000940400-26-015401-index.htm"
    }
  ]
}