{
  "page": "compare",
  "query": {
    "a": "FDFIX",
    "b": "PREIX"
  },
  "retrieved_at": "2026-07-07T10:53:23+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 Flex 500 Index Fund",
    "ticker": "FDFIX",
    "slug": "FDFIX",
    "series_id": "S000056363",
    "html_url": "https://fundwatcher.app/funds/FDFIX/"
  },
  "fund_b": {
    "name": "T. Rowe Price Equity Index 500 Fund",
    "ticker": "PREIX",
    "slug": "PREIX",
    "series_id": "S000002089",
    "html_url": "https://fundwatcher.app/funds/PREIX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.9564556241842817038263100506",
    "coverage_b_by_a": "0.9564556241842817038263100506",
    "shared_count": 448,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "NVIDIA CORP",
        "value": "589303286.13",
        "weight": "0.07239476",
        "shared": true
      },
      {
        "name": "APPLE INC",
        "value": "534259931.94",
        "weight": "0.06563279",
        "shared": true
      },
      {
        "name": "MICROSOFT CORP",
        "value": "399506517.46",
        "weight": "0.04907860",
        "shared": true
      },
      {
        "name": "AMAZON.COM INC",
        "value": "279607440.00",
        "weight": "0.03434923",
        "shared": true
      },
      {
        "name": "ALPHABET INC CL A",
        "value": "247495975.92",
        "weight": "0.03040440",
        "shared": true
      },
      {
        "name": "BROADCOM INC",
        "value": "206535071.05",
        "weight": "0.02537243",
        "shared": true
      },
      {
        "name": "ALPHABET INC CL C",
        "value": "198970758.42",
        "weight": "0.02444317",
        "shared": true
      },
      {
        "name": "META PLATFORMS INC CL A",
        "value": "193218568.92",
        "weight": "0.02373653",
        "shared": true
      },
      {
        "name": "TESLA INC",
        "value": "154792465.68",
        "weight": "0.01901595",
        "shared": true
      },
      {
        "name": "BERKSHIRE HATH-B",
        "value": "126715182.70",
        "weight": "0.01556671",
        "shared": true
      },
      {
        "name": "LILLY ELI and CO",
        "value": "114336585.14",
        "weight": "0.01404603",
        "shared": true
      },
      {
        "name": "JPMORGAN CHASE and CO",
        "value": "111868356.60",
        "weight": "0.01374281",
        "shared": true
      },
      {
        "name": "EXXON MOBIL CORP",
        "value": "88043130.00",
        "weight": "0.01081593",
        "shared": true
      },
      {
        "name": "JOHNSON&JOHNSON",
        "value": "81909855.30",
        "weight": "0.01006247",
        "shared": true
      },
      {
        "name": "WALMART INC",
        "value": "76807233.45",
        "weight": "0.00943562",
        "shared": true
      },
      {
        "name": "VISA INC-CLASS A",
        "value": "73930570.48",
        "weight": "0.00908223",
        "shared": true
      },
      {
        "name": "MICRON TECHNOLOGY INC",
        "value": "63351990.73",
        "weight": "0.00778267",
        "shared": true
      },
      {
        "name": "COSTCO WHOLESALE CORP",
        "value": "61329683.25",
        "weight": "0.00753423",
        "shared": true
      },
      {
        "name": "MASTERCARD INC CL A",
        "value": "58030962.00",
        "weight": "0.00712899",
        "shared": true
      },
      {
        "name": "ABBVIE INC",
        "value": "56129708.40",
        "weight": "0.00689543",
        "shared": true
      },
      {
        "name": "NETFLIX INC",
        "value": "55826418.00",
        "weight": "0.00685817",
        "shared": true
      },
      {
        "name": "PROCTER & GAMBLE",
        "value": "53469891.20",
        "weight": "0.00656867",
        "shared": true
      },
      {
        "name": "HOME DEPOT INC",
        "value": "51857490.48",
        "weight": "0.00637059",
        "shared": true
      },
      {
        "name": "GENERAL ELECTRIC CO",
        "value": "49410022.64",
        "weight": "0.00606993",
        "shared": true
      },
      {
        "name": "CHEVRON CORP",
        "value": "48397733.44",
        "weight": "0.00594557",
        "shared": true
      },
      {
        "name": "CATERPILLAR INC",
        "value": "47570090.37",
        "weight": "0.00584389",
        "shared": true
      },
      {
        "name": "BANK OF AMERICA CORPORATION",
        "value": "45797407.59",
        "weight": "0.00562612",
        "shared": true
      },
      {
        "name": "ADV MICRO DEVICE",
        "value": "44612393.88",
        "weight": "0.00548055",
        "shared": true
      },
      {
        "name": "COCA-COLA CO/THE",
        "value": "43225168.80",
        "weight": "0.00531013",
        "shared": true
      },
      {
        "name": "PALANTIR TECHNOLOGIES INC",
        "value": "42892041.93",
        "weight": "0.00526920",
        "shared": true
      },
      {
        "name": "CISCO SYSTEMS INC",
        "value": "42849996.90",
        "weight": "0.00526404",
        "shared": true
      },
      {
        "name": "MERCK & CO",
        "value": "42054596.26",
        "weight": "0.00516633",
        "shared": true
      },
      {
        "name": "APPLIED MATERIALS INC",
        "value": "40595592.00",
        "weight": "0.00498709",
        "shared": true
      },
      {
        "name": "LAM RESEARCH CORP",
        "value": "40207796.01",
        "weight": "0.00493945",
        "shared": true
      },
      {
        "name": "PHILIP MORRIS INTL INC",
        "value": "39815154.47",
        "weight": "0.00489121",
        "shared": true
      },
      {
        "name": "RTX CORP",
        "value": "37180972.62",
        "weight": "0.00456761",
        "shared": true
      },
      {
        "name": "UNITEDHEALTH GRP",
        "value": "36363427.11",
        "weight": "0.00446718",
        "shared": true
      },
      {
        "name": "GOLDMAN SACHS GROUP INC",
        "value": "35284488.93",
        "weight": "0.00433463",
        "shared": true
      },
      {
        "name": "WELLS FARGO & CO",
        "value": "34978783.95",
        "weight": "0.00429708",
        "shared": true
      },
      {
        "name": "ORACLE CORP",
        "value": "33472824.80",
        "weight": "0.00411207",
        "shared": true
      },
      {
        "name": "MCDONALDS CORP",
        "value": "33257442.72",
        "weight": "0.00408561",
        "shared": true
      },
      {
        "name": "LINDE PLC",
        "value": "32466312.00",
        "weight": "0.00398842",
        "shared": true
      },
      {
        "name": "GE VERNOVA LLC",
        "value": "32435894.40",
        "weight": "0.00398469",
        "shared": true
      },
      {
        "name": "PEPSICO INC",
        "value": "31774988.52",
        "weight": "0.00390350",
        "shared": true
      },
      {
        "name": "INTL BUS MACH CORP",
        "value": "30719015.64",
        "weight": "0.00377377",
        "shared": true
      },
      {
        "name": "VERIZON COMMUNICATIONS INC",
        "value": "28931732.66",
        "weight": "0.00355421",
        "shared": true
      },
      {
        "name": "AMGEN INC",
        "value": "28601181.44",
        "weight": "0.00351360",
        "shared": true
      },
      {
        "name": "INTEL CORP",
        "value": "27991039.44",
        "weight": "0.00343864",
        "shared": true
      },
      {
        "name": "ABBOTT LABS",
        "value": "27695954.00",
        "weight": "0.00340239",
        "shared": true
      },
      {
        "name": "MORGAN STANLEY",
        "value": "27520106.76",
        "weight": "0.00338079",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "NVIDIA CORP",
        "value": "2647914676.80",
        "weight": "0.07566358",
        "shared": true
      },
      {
        "name": "APPLE INC",
        "value": "2327991306.16",
        "weight": "0.06652184",
        "shared": true
      },
      {
        "name": "MICROSOFT CORP",
        "value": "1717412969.25",
        "weight": "0.04907470",
        "shared": true
      },
      {
        "name": "AMAZON.COM INC",
        "value": "1271275914.60",
        "weight": "0.03632643",
        "shared": true
      },
      {
        "name": "ALPHABET INC CL A",
        "value": "1045973332.04",
        "weight": "0.02988846",
        "shared": true
      },
      {
        "name": "BROADCOM INC",
        "value": "916943493.15",
        "weight": "0.02620146",
        "shared": true
      },
      {
        "name": "ALPHABET INC CL C",
        "value": "838263152.58",
        "weight": "0.02395319",
        "shared": true
      },
      {
        "name": "META PLATFORMS INC CL A",
        "value": "781900892.37",
        "weight": "0.02234265",
        "shared": true
      },
      {
        "name": "TESLA INC",
        "value": "653159545.50",
        "weight": "0.01866389",
        "shared": true
      },
      {
        "name": "BERKSHIRE HATH-B",
        "value": "548934142.40",
        "weight": "0.01568567",
        "shared": true
      },
      {
        "name": "JPMORGAN CHASE and CO",
        "value": "495435155.92",
        "weight": "0.01415695",
        "shared": true
      },
      {
        "name": "LILLY ELI and CO",
        "value": "455279711.61",
        "weight": "0.01300952",
        "shared": true
      },
      {
        "name": "EXXON MOBIL CORP",
        "value": "442876561.82",
        "weight": "0.01265510",
        "shared": true
      },
      {
        "name": "JOHNSON&JOHNSON",
        "value": "367942576.68",
        "weight": "0.01051388",
        "shared": true
      },
      {
        "name": "WALMART INC",
        "value": "340273793.08",
        "weight": "0.00972325",
        "shared": true
      },
      {
        "name": "VISA INC-CLASS A",
        "value": "317343235.04",
        "weight": "0.00906801",
        "shared": true
      },
      {
        "name": "COSTCO WHOLESALE CORP",
        "value": "276456514.21",
        "weight": "0.00789968",
        "shared": true
      },
      {
        "name": "MASTERCARD INC CL A",
        "value": "254125577.02",
        "weight": "0.00726158",
        "shared": true
      },
      {
        "name": "NETFLIX INC",
        "value": "253520147.25",
        "weight": "0.00724428",
        "shared": true
      },
      {
        "name": "CHEVRON CORP",
        "value": "242200036.60",
        "weight": "0.00692081",
        "shared": true
      },
      {
        "name": "ABBVIE INC",
        "value": "240041320.61",
        "weight": "0.00685913",
        "shared": true
      },
      {
        "name": "MICRON TECHNOLOGY INC",
        "value": "237403208.56",
        "weight": "0.00678374",
        "shared": true
      },
      {
        "name": "PROCTER & GAMBLE",
        "value": "209612916.84",
        "weight": "0.00598964",
        "shared": true
      },
      {
        "name": "PALANTIR TECHNOLOGIES INC",
        "value": "208665348.12",
        "weight": "0.00596257",
        "shared": true
      },
      {
        "name": "ADV MICRO DEVICE",
        "value": "207340128.03",
        "weight": "0.00592470",
        "shared": true
      },
      {
        "name": "CATERPILLAR INC",
        "value": "205832426.10",
        "weight": "0.00588162",
        "shared": true
      },
      {
        "name": "HOME DEPOT INC",
        "value": "204446575.14",
        "weight": "0.00584202",
        "shared": true
      },
      {
        "name": "BANK OF AMERICA CORPORATION",
        "value": "201983340.00",
        "weight": "0.00577163",
        "shared": true
      },
      {
        "name": "CISCO SYSTEMS INC",
        "value": "191418875.04",
        "weight": "0.00546975",
        "shared": true
      },
      {
        "name": "MERCK & CO",
        "value": "186413533.29",
        "weight": "0.00532673",
        "shared": true
      },
      {
        "name": "GENERAL ELECTRIC CO",
        "value": "185835297.60",
        "weight": "0.00531020",
        "shared": true
      },
      {
        "name": "COCA-COLA CO/THE",
        "value": "183833535.60",
        "weight": "0.00525300",
        "shared": true
      },
      {
        "name": "APPLIED MATERIALS INC",
        "value": "169382237.46",
        "weight": "0.00484006",
        "shared": true
      },
      {
        "name": "LAM RESEARCH CORP",
        "value": "166588138.08",
        "weight": "0.00476022",
        "shared": true
      },
      {
        "name": "RTX CORP",
        "value": "161916402.00",
        "weight": "0.00462673",
        "shared": true
      },
      {
        "name": "PHILIP MORRIS INTL INC",
        "value": "160686836.38",
        "weight": "0.00459159",
        "shared": true
      },
      {
        "name": "GOLDMAN SACHS GROUP INC",
        "value": "158404013.59",
        "weight": "0.00452636",
        "shared": true
      },
      {
        "name": "ORACLE CORP",
        "value": "155871724.49",
        "weight": "0.00445400",
        "shared": true
      },
      {
        "name": "WELLS FARGO & CO",
        "value": "153696419.37",
        "weight": "0.00439184",
        "shared": true
      },
      {
        "name": "UNITEDHEALTH GRP",
        "value": "153026762.70",
        "weight": "0.00437271",
        "shared": true
      },
      {
        "name": "GE VERNOVA LLC",
        "value": "146869789.50",
        "weight": "0.00419677",
        "shared": true
      },
      {
        "name": "LINDE PLC",
        "value": "144512056.96",
        "weight": "0.00412940",
        "shared": true
      },
      {
        "name": "INTL BUS MACH CORP",
        "value": "141441109.53",
        "weight": "0.00404165",
        "shared": true
      },
      {
        "name": "MCDONALDS CORP",
        "value": "138162626.87",
        "weight": "0.00394797",
        "shared": true
      },
      {
        "name": "PEPSICO INC",
        "value": "132472308.56",
        "weight": "0.00378537",
        "shared": true
      },
      {
        "name": "VERIZON COMMUNICATIONS INC",
        "value": "132140606.60",
        "weight": "0.00377589",
        "shared": true
      },
      {
        "name": "INTEL CORP",
        "value": "129470270.94",
        "weight": "0.00369958",
        "shared": true
      },
      {
        "name": "AT&T INC",
        "value": "126667282.56",
        "weight": "0.00361949",
        "shared": true
      },
      {
        "name": "CITIGROUP INC",
        "value": "123694018.80",
        "weight": "0.00353453",
        "shared": true
      },
      {
        "name": "MORGAN STANLEY",
        "value": "123572321.60",
        "weight": "0.00353105",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "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"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001099263-26-006578",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/858581/000109926326006578/0001099263-26-006578-index.htm"
    }
  ]
}