{
  "page": "compare",
  "query": {
    "a": "FNILX",
    "b": "FXAIX"
  },
  "retrieved_at": "2026-07-07T18:05:46+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": "Fidelity ZERO Large Cap Index Fund",
    "ticker": "FNILX",
    "slug": "FNILX",
    "series_id": "S000063104",
    "html_url": "https://fundwatcher.app/funds/FNILX/"
  },
  "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": "0.9291771592581481970964079164",
    "coverage_b_by_a": "0.9291771592581481970964079165",
    "shared_count": 451,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "NVIDIA CORP",
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      },
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      },
      {
        "name": "MICROSOFT CORP",
        "value": "855449652.33",
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      },
      {
        "name": "AMAZON.COM INC",
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      },
      {
        "name": "ALPHABET INC CL A",
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      {
        "name": "Fidelity Cash Central Fund",
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      },
      {
        "name": "ALPHABET INC CL C",
        "value": "421665858.87",
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      },
      {
        "name": "BROADCOM INC",
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      },
      {
        "name": "META PLATFORMS INC CL A",
        "value": "417404956.50",
        "weight": "0.02532972",
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      },
      {
        "name": "TESLA INC",
        "value": "323508207.48",
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      },
      {
        "name": "BERKSHIRE HATH-B",
        "value": "235701887.12",
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      },
      {
        "name": "JPMORGAN CHASE and CO",
        "value": "222741450.75",
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      },
      {
        "name": "LILLY ELI and CO",
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      },
      {
        "name": "EXXON MOBIL CORP",
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      {
        "name": "JOHNSON&JOHNSON",
        "value": "146453535.00",
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      },
      {
        "name": "VISA INC-CLASS A",
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      {
        "name": "WALMART INC",
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      },
      {
        "name": "MICRON TECHNOLOGY INC",
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      },
      {
        "name": "MASTERCARD INC CL A",
        "value": "118172810.70",
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      },
      {
        "name": "COSTCO WHOLESALE CORP",
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      {
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        "name": "ADV MICRO DEVICE",
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      },
      {
        "name": "HOME DEPOT INC",
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      {
        "name": "BANK OF AMERICA CORPORATION",
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      {
        "name": "PROCTER & GAMBLE",
        "value": "94863383.19",
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      {
        "name": "NETFLIX INC",
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      },
      {
        "name": "PALANTIR TECHNOLOGIES INC",
        "value": "89571474.06",
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      },
      {
        "name": "CHEVRON CORP",
        "value": "89560755.10",
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      },
      {
        "name": "GENERAL ELECTRIC CO",
        "value": "86561105.29",
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      },
      {
        "name": "CISCO SYSTEMS INC",
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      },
      {
        "name": "CATERPILLAR INC",
        "value": "82287667.44",
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      },
      {
        "name": "LAM RESEARCH CORP",
        "value": "78436490.04",
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      {
        "name": "COCA-COLA CO/THE",
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      {
        "name": "INTL BUS MACH CORP",
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      {
        "name": "WELLS FARGO & CO",
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      {
        "name": "GOLDMAN SACHS GROUP INC",
        "value": "75046073.48",
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      {
        "name": "PHILIP MORRIS INTL INC",
        "value": "74715765.52",
        "weight": "0.00453404",
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      },
      {
        "name": "ORACLE CORP",
        "value": "74045694.06",
        "weight": "0.00449337",
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      },
      {
        "name": "MERCK & CO",
        "value": "73209686.51",
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      },
      {
        "name": "RTX CORP",
        "value": "72061937.06",
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      },
      {
        "name": "UNITEDHEALTH GRP",
        "value": "69523425.93",
        "weight": "0.00421895",
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      },
      {
        "name": "APPLIED MATERIALS INC",
        "value": "68683813.44",
        "weight": "0.00416799",
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      },
      {
        "name": "MCDONALDS CORP",
        "value": "60005295.00",
        "weight": "0.00364135",
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      },
      {
        "name": "MORGAN STANLEY",
        "value": "59061400.40",
        "weight": "0.00358407",
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      },
      {
        "name": "THERMO FISHER SCIENTIFIC INC",
        "value": "58149147.78",
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      {
        "name": "LINDE PLC",
        "value": "57077380.88",
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      {
        "name": "PEPSICO INC",
        "value": "56189711.61",
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      },
      {
        "name": "INTEL CORP",
        "value": "55734491.55",
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      },
      {
        "name": "CITIGROUP INC",
        "value": "55380888.78",
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      {
        "name": "SALESFORCE INC",
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    ],
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        "name": "AMAZON.COM INC",
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        "name": "ALPHABET INC CL A",
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      {
        "name": "ALPHABET INC CL C",
        "value": "18429356703.66",
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      },
      {
        "name": "META PLATFORMS INC CL A",
        "value": "17965197354.78",
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      {
        "name": "TESLA INC",
        "value": "14393775310.44",
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      },
      {
        "name": "BERKSHIRE HATH-B",
        "value": "11783800516.55",
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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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        "value": "7617187504.29",
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      },
      {
        "name": "WALMART INC",
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      },
      {
        "name": "VISA INC-CLASS A",
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      },
      {
        "name": "MICRON TECHNOLOGY INC",
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      {
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      {
        "name": "MASTERCARD INC CL A",
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      {
        "name": "ABBVIE INC",
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      {
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        "name": "BANK OF AMERICA CORPORATION",
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      {
        "name": "ADV MICRO DEVICE",
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      {
        "name": "COCA-COLA CO/THE",
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      {
        "name": "PALANTIR TECHNOLOGIES INC",
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      {
        "name": "CISCO SYSTEMS INC",
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      {
        "name": "MERCK & CO",
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      },
      {
        "name": "APPLIED MATERIALS INC",
        "value": "3774477548.70",
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      },
      {
        "name": "LAM RESEARCH CORP",
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      {
        "name": "PHILIP MORRIS INTL INC",
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      },
      {
        "name": "RTX CORP",
        "value": "3457305667.86",
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      },
      {
        "name": "UNITEDHEALTH GRP",
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      {
        "name": "GOLDMAN SACHS GROUP INC",
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      {
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      {
        "name": "ORACLE CORP",
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      {
        "name": "MCDONALDS CORP",
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      {
        "name": "LINDE PLC",
        "value": "3019267940.40",
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      {
        "name": "GE VERNOVA LLC",
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        "name": "PEPSICO INC",
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      {
        "name": "INTL BUS MACH CORP",
        "value": "2857459851.54",
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      },
      {
        "name": "VERIZON COMMUNICATIONS INC",
        "value": "2690476800.60",
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      },
      {
        "name": "AMGEN INC",
        "value": "2660000703.36",
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      {
        "name": "INTEL CORP",
        "value": "2602596862.19",
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      },
      {
        "name": "ABBOTT LABS",
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      },
      {
        "name": "MORGAN STANLEY",
        "value": "2559544764.18",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000035402-26-002116",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/819118/000003540226002116/0000035402-26-002116-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"
    }
  ]
}