{
  "page": "compare",
  "query": {
    "a": "CSM",
    "b": "FXAIX"
  },
  "retrieved_at": "2026-07-07T17:54:12+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": "ProShares Large Cap Core Plus",
    "ticker": "CSM",
    "slug": "CSM",
    "series_id": "S000020962",
    "html_url": "https://fundwatcher.app/funds/CSM/"
  },
  "fund_b": {
    "name": "Fidelity 500 Index Fund",
    "ticker": "FXAIX",
    "slug": "FXAIX",
    "series_id": "S000006027",
    "html_url": "https://fundwatcher.app/funds/FXAIX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.5264714959430916650369256069",
    "coverage_b_by_a": "0.5264714959430916650369256070",
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      "b": "2026-02-28"
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      {
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        "name": "MERCK & CO",
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        "name": "LAM RESEARCH CORP",
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  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-009199",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1174610/000207169126009199/0002071691-26-009199-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000035402-26-002559",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/819118/000003540226002559/0000035402-26-002559-index.htm"
    }
  ]
}