{
  "page": "compare",
  "query": {
    "a": "CVLC",
    "b": "FDFIX"
  },
  "retrieved_at": "2026-07-07T15:17:07+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": "Calvert US Large-Cap Core Responsible Index ETF",
    "ticker": "CVLC",
    "slug": "CVLC",
    "series_id": "S000077959",
    "html_url": "https://fundwatcher.app/funds/CVLC/"
  },
  "fund_b": {
    "name": "Fidelity Flex 500 Index Fund",
    "ticker": "FDFIX",
    "slug": "FDFIX",
    "series_id": "S000056363",
    "html_url": "https://fundwatcher.app/funds/FDFIX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.7775656010830110587061178416",
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    "as_of": {
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      "b": "2026-02-28"
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        "name": "ADV MICRO DEVICE",
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      {
        "name": "COCA-COLA CO/THE",
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      },
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        "name": "CISCO SYSTEMS INC",
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        "name": "MSILF-GOVT-INS",
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      {
        "name": "GOLDMAN SACHS GROUP INC",
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      {
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        "name": "LINDE PLC",
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      {
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      {
        "name": "UNITEDHEALTH GRP",
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      {
        "name": "INTL BUS MACH CORP",
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      {
        "name": "NEXTERA ENERGY INC",
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      },
      {
        "name": "VERIZON COMMUNICATIONS INC",
        "value": "2934240.20",
        "weight": "0.00420484",
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      {
        "name": "AMGEN INC",
        "value": "2844707.25",
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      {
        "name": "AT&T INC",
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        "name": "THERMO FISHER SCIENTIFIC INC",
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        "name": "UNION PACIFIC CORP",
        "value": "2683377.20",
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      },
      {
        "name": "AMPHENOL CORPORATION CL A",
        "value": "2673945.05",
        "weight": "0.00383183",
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      {
        "name": "KLA CORP",
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      {
        "name": "ABBOTT LABS",
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        "name": "AMERICAN EXPRESS CO",
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        "name": "GILEAD SCIENCES INC",
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        "name": "WALT DISNEY CO/T",
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        "name": "INTEL CORP",
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        "name": "ALPHABET INC CL C",
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      {
        "name": "META PLATFORMS INC CL A",
        "value": "193218568.92",
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      {
        "name": "TESLA INC",
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      {
        "name": "BERKSHIRE HATH-B",
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      {
        "name": "LILLY ELI and CO",
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      {
        "name": "JPMORGAN CHASE and CO",
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      {
        "name": "EXXON MOBIL CORP",
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      {
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      {
        "name": "WALMART INC",
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      {
        "name": "VISA INC-CLASS A",
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        "name": "LAM RESEARCH CORP",
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      {
        "name": "RTX CORP",
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      },
      {
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      {
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-011920",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1676326/000207169126011920/0002071691-26-011920-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000035402-26-002571",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/819118/000003540226002571/0000035402-26-002571-index.htm"
    }
  ]
}