{
  "page": "compare",
  "query": {
    "a": "MTCAX",
    "b": "JAFSX"
  },
  "retrieved_at": "2026-07-07T19:23:36+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 Technology Fund",
    "ticker": "MTCAX",
    "slug": "MTCAX",
    "series_id": "S000000768",
    "html_url": "https://fundwatcher.app/funds/MTCAX/"
  },
  "fund_b": {
    "name": "Science & Technology Trust",
    "ticker": "JAFSX",
    "slug": "JAFSX",
    "series_id": "S000008340",
    "html_url": "https://fundwatcher.app/funds/JAFSX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.6023298111606725880371194090",
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        "name": "MFS Institutional Money Market Portfolio, Class A",
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      {
        "name": "NEW TAIWAN DOLLAR",
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      {
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      {
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      {
        "name": "CISCO SYSTEMS INC",
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        "name": "PALANTIR TECHNOLOGIES INC",
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        "name": "LAM RESEARCH CORP",
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        "name": "INTL BUS MACH CORP",
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      {
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        "name": "SK HYNIX INC COMMON STOCK KRW5000.0",
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      },
      {
        "name": "APPLOVIN CORP",
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      },
      {
        "name": "DELL TECHNOLOGIES INC CL C",
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      },
      {
        "name": "COHERENT CORP",
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        "name": "VIAVI SOLUTIONS INC",
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  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-040067",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/798244/000141036826040067/0001410368-26-040067-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000756913-26-000290",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/756913/000075691326000290/0000756913-26-000290-index.htm"
    }
  ]
}