{
  "page": "compare",
  "query": {
    "a": "WGFIX",
    "b": "AMCPX"
  },
  "retrieved_at": "2026-07-07T15:02:32+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": "William Blair Global Leaders Fund",
    "ticker": "WGFIX",
    "slug": "WGFIX",
    "series_id": "S000019315",
    "html_url": "https://fundwatcher.app/funds/WGFIX/"
  },
  "fund_b": {
    "name": "AMCAP Fund",
    "ticker": "AMCPX",
    "slug": "AMCPX",
    "series_id": "S000008817",
    "html_url": "https://fundwatcher.app/funds/AMCPX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.3784345837354559775204985532",
    "coverage_b_by_a": "0.3784345837354559775204985532",
    "shared_count": 20,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "NVIDIA CORP",
        "value": "876360.00",
        "weight": "0.06689806",
        "shared": true
      },
      {
        "name": "TAIWAN SEMIC MFG CO LTD SP ADR",
        "value": "613379.25",
        "weight": "0.04682309",
        "shared": false
      },
      {
        "name": "ALPHABET INC CL A",
        "value": "590935.80",
        "weight": "0.04510984",
        "shared": true
      },
      {
        "name": "AMAZON.COM INC",
        "value": "497765.30",
        "weight": "0.03799755",
        "shared": true
      },
      {
        "name": "MICROSOFT CORP",
        "value": "494176.95",
        "weight": "0.03772363",
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      },
      {
        "name": "TOTALENERGIES SE",
        "value": "488330.02",
        "weight": "0.03727729",
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      },
      {
        "name": "TENCENT HOLDINGS LTD",
        "value": "397355.73",
        "weight": "0.03033266",
        "shared": false
      },
      {
        "name": "LILLY ELI and CO",
        "value": "394581.33",
        "weight": "0.03012087",
        "shared": true
      },
      {
        "name": "META PLATFORMS INC CL A",
        "value": "389620.53",
        "weight": "0.02974218",
        "shared": true
      },
      {
        "name": "MASTERCARD INC CL A",
        "value": "385237.86",
        "weight": "0.02940762",
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      },
      {
        "name": "APPLE INC",
        "value": "371548.56",
        "weight": "0.02836263",
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      },
      {
        "name": "APPLIED MATERIALS INC",
        "value": "346916.85",
        "weight": "0.02648234",
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      },
      {
        "name": "IBIDEN CO LTD",
        "value": "325263.30",
        "weight": "0.02482939",
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      },
      {
        "name": "SK HYNIX INC",
        "value": "310348.52",
        "weight": "0.02369085",
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      },
      {
        "name": "ARGENX SE SPONSORED ADR",
        "value": "309626.00",
        "weight": "0.02363570",
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      },
      {
        "name": "BRITISH AMERICAN TOBACCO PLC",
        "value": "301151.00",
        "weight": "0.02298875",
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      },
      {
        "name": "VERTEX PHARMACEUTICALS INC",
        "value": "293376.78",
        "weight": "0.02239529",
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      },
      {
        "name": "HITACHI LTD",
        "value": "275753.59",
        "weight": "0.02105000",
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      },
      {
        "name": "GALDERMA GROUP A",
        "value": "252742.31",
        "weight": "0.01929341",
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      },
      {
        "name": "BBVA",
        "value": "243578.21",
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      },
      {
        "name": "CENCORA INC",
        "value": "242201.94",
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      },
      {
        "name": "FIXED INC CLEARING CORP.REPO",
        "value": "226213.48",
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      },
      {
        "name": "DEXCOM INC",
        "value": "223442.40",
        "weight": "0.01705676",
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      },
      {
        "name": "IBERDROLA SA",
        "value": "207581.28",
        "weight": "0.01584598",
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      },
      {
        "name": "NU HOLDINGS LTD/CAYMAN ISLANDS",
        "value": "202185.90",
        "weight": "0.01543412",
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      },
      {
        "name": "INTUITIVE SURGICAL INC",
        "value": "198225.70",
        "weight": "0.01513181",
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      },
      {
        "name": "BROADCOM INC",
        "value": "197776.89",
        "weight": "0.01509755",
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      },
      {
        "name": "JPMORGAN CHASE and CO",
        "value": "196498.88",
        "weight": "0.01499999",
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      },
      {
        "name": "GRACO INC",
        "value": "177003.15",
        "weight": "0.01351176",
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      },
      {
        "name": "PROGRESSIVE CORP OHIO",
        "value": "172865.28",
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      },
      {
        "name": "ASTRAZENECA PLC",
        "value": "169337.59",
        "weight": "0.01292660",
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      },
      {
        "name": "NETFLIX INC",
        "value": "166724.10",
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      },
      {
        "name": "LINDE PLC",
        "value": "165583.84",
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      {
        "name": "Hermes International SCA",
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      },
      {
        "name": "LLOYDS BANKING",
        "value": "162643.49",
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      {
        "name": "IHI CORP",
        "value": "158874.06",
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      },
      {
        "name": "TKO GROUP HOLDINGS INC",
        "value": "148616.05",
        "weight": "0.01134480",
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      },
      {
        "name": "LONDON STOCK EXCHANGE GRP PLC",
        "value": "145484.07",
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      },
      {
        "name": "BAE SYSTEMS PLC",
        "value": "142927.70",
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      },
      {
        "name": "SCHNEIDER ELECTR",
        "value": "132922.23",
        "weight": "0.01014679",
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      },
      {
        "name": "RHEINMETALL AG",
        "value": "126508.95",
        "weight": "0.00965722",
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      },
      {
        "name": "CRH PLC",
        "value": "124672.32",
        "weight": "0.00951702",
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      },
      {
        "name": "SUMITOMO MITSUI FINL GROUP INC",
        "value": "118369.11",
        "weight": "0.00903586",
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      },
      {
        "name": "FIGURE TECHNOLOGY SOLUTIONS INC A",
        "value": "116210.85",
        "weight": "0.00887110",
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      },
      {
        "name": "FUJIKURA LTD",
        "value": "115508.51",
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      },
      {
        "name": "SERVICENOW INC",
        "value": "112182.15",
        "weight": "0.00856357",
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      },
      {
        "name": "UNITEDHEALTH GRP",
        "value": "102553.61",
        "weight": "0.00782856",
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      },
      {
        "name": "3I GROUP PLC",
        "value": "88126.09",
        "weight": "0.00672722",
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      {
        "name": "EMBRAER",
        "value": "81706.03",
        "weight": "0.00623713",
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      },
      {
        "name": "INTUIT INC",
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    ],
    "b_top": [
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        "name": "NVIDIA CORP",
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        "weight": "0.06117445",
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      },
      {
        "name": "BROADCOM INC",
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      },
      {
        "name": "MICROSOFT CORP",
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      },
      {
        "name": "AMAZON.COM INC",
        "value": "4682518890.00",
        "weight": "0.04989118",
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      },
      {
        "name": "ALPHABET INC CL A",
        "value": "4648300759.44",
        "weight": "0.04952659",
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      },
      {
        "name": "LILLY ELI and CO",
        "value": "4407340508.73",
        "weight": "0.04695922",
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      },
      {
        "name": "META PLATFORMS INC CL A",
        "value": "3736034331.12",
        "weight": "0.03980660",
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      },
      {
        "name": "CAPITAL GROUP CENTRAL CASH FUND",
        "value": "3449841939.00",
        "weight": "0.03675729",
        "shared": false
      },
      {
        "name": "TSMC",
        "value": "2763876530.96",
        "weight": "0.02944848",
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      },
      {
        "name": "APPLE INC",
        "value": "2362372322.94",
        "weight": "0.02517054",
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      },
      {
        "name": "TRANSDIGM GROUP INC",
        "value": "2296649407.30",
        "weight": "0.02447028",
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      },
      {
        "name": "VERTEX PHARMACEUTICALS INC",
        "value": "2295984083.61",
        "weight": "0.02446319",
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      },
      {
        "name": "NETFLIX INC",
        "value": "2086911179.28",
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      {
        "name": "MASTERCARD INC CL A",
        "value": "1831813518.41",
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      },
      {
        "name": "UBER TECHNOLOGIES INC",
        "value": "1640093350.86",
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      },
      {
        "name": "VIKING HOLDINGS LTD",
        "value": "1399773048.16",
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      {
        "name": "MERCADOLIBRE INC",
        "value": "1355691757.20",
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      {
        "name": "ALPHABET INC CL C",
        "value": "1297131487.26",
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      {
        "name": "CARVANA CO CL A",
        "value": "1273733377.52",
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      },
      {
        "name": "XPO LOGISTICS INC",
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      {
        "name": "APPLIED MATERIALS INC",
        "value": "1251583248.00",
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      {
        "name": "ALNYLAM PHARMACEUTICALS INC",
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      {
        "name": "FAIR ISAAC CORP",
        "value": "1212838841.60",
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      {
        "name": "GENERAL ELECTRIC CO",
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      {
        "name": "TOPBUILD CORP",
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      {
        "name": "INGERSOLL RAND INC",
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      {
        "name": "PROGRESSIVE CORP OHIO",
        "value": "939399135.66",
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      {
        "name": "ENTEGRIS INC",
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      {
        "name": "TRANE TECHNOLOGIES PLC",
        "value": "810164482.48",
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      {
        "name": "AMPHENOL CORPORATION CL A",
        "value": "749183659.22",
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      {
        "name": "UNITED RENTALS INC",
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      {
        "name": "PHILIP MORRIS INTL INC",
        "value": "671928303.27",
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      {
        "name": "TESLA INC",
        "value": "642379796.85",
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      {
        "name": "HOWMET AEROSPACE INC",
        "value": "641458188.63",
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      {
        "name": "LINDE PLC",
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      {
        "name": "ROYAL CARIBBEAN CRUISES LTD",
        "value": "613714698.48",
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      {
        "name": "SALESFORCE INC",
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      {
        "name": "NVR INC",
        "value": "596589261.03",
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      {
        "name": "SYNOPSYS INC",
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      {
        "name": "ARISTA NETWORKS INC",
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      {
        "name": "FERGUSON ENTERPRISES INC",
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      {
        "name": "MONSTER BEVERAGE CORP",
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      {
        "name": "CARRIER GLOBAL CORP",
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      {
        "name": "IDEXX LABS INC",
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      {
        "name": "MEDLINE INC-A",
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      },
      {
        "name": "AFFIRM HOLDINGS INC",
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      },
      {
        "name": "APPLOVIN CORP",
        "value": "451921676.50",
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      {
        "name": "ECOLAB INC",
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      },
      {
        "name": "STARBUCKS CORP",
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      },
      {
        "name": "MONCLER SPA",
        "value": "430827069.78",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-055313",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/822632/000141036826055313/0001410368-26-055313-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001193125-26-182048",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/4405/000119312526182048/0001193125-26-182048-index.htm"
    }
  ]
}