{
  "page": "compare",
  "query": {
    "a": "MITIX",
    "b": "MRGAX"
  },
  "retrieved_at": "2026-07-07T17:29:02+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": "Massachusetts Investors Trust",
    "ticker": "MITIX",
    "slug": "MITIX",
    "series_id": "S000000696",
    "html_url": "https://fundwatcher.app/funds/MITIX/"
  },
  "fund_b": {
    "name": "MFS Core Equity Fund",
    "ticker": "MRGAX",
    "slug": "MRGAX",
    "series_id": "S000000763",
    "html_url": "https://fundwatcher.app/funds/MRGAX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.5502019304873166494512548179",
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      "a": "2026-03-31",
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        "name": "LAM RESEARCH CORP",
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        "name": "GOLDMAN SACHS GROUP INC",
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      {
        "name": "PNC FINANCIAL SERVICES GRP INC",
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        "name": "AMPHENOL CORPORATION CL A",
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        "name": "GENERAL ELECTRIC CO",
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        "name": "MFS Institutional Money Market Portfolio, Class A",
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        "name": "CARVANA CO CL A",
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  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-050728",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/63091/000141036826050728/0001410368-26-050728-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-040059",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/798244/000141036826040059/0001410368-26-040059-index.htm"
    }
  ]
}