{
  "page": "compare",
  "query": {
    "a": "FBT",
    "b": "BBH"
  },
  "retrieved_at": "2026-07-07T18:58:21+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": "First Trust NYSE Arca Biotechnology Index Fund",
    "ticker": "FBT",
    "slug": "FBT",
    "series_id": "S000012478",
    "html_url": "https://fundwatcher.app/funds/FBT/"
  },
  "fund_b": {
    "name": "VanEck Biotech ETF",
    "ticker": "BBH",
    "slug": "BBH",
    "series_id": "S000034406",
    "html_url": "https://fundwatcher.app/funds/BBH/"
  },
  "overlap": {
    "coverage_a_by_b": "0.4908689267248742374417378042",
    "coverage_b_by_a": "0.4908689267248742374417378043",
    "shared_count": 17,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "MODERNA INC",
        "value": "119445481.20",
        "weight": "0.05258157",
        "shared": true
      },
      {
        "name": "UNITED THERAPEUTICS CORP DEL",
        "value": "98938120.02",
        "weight": "0.04355394",
        "shared": true
      },
      {
        "name": "ALKERMES PLC",
        "value": "96146103.04",
        "weight": "0.04232486",
        "shared": false
      },
      {
        "name": "GILEAD SCIENCES INC",
        "value": "92819305.04",
        "weight": "0.04086035",
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      },
      {
        "name": "AXSOME THERAPEUTICS INC",
        "value": "88207819.56",
        "weight": "0.03883031",
        "shared": false
      },
      {
        "name": "AMGEN INC",
        "value": "87006523.55",
        "weight": "0.03830149",
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      },
      {
        "name": "CORCEPT THERAPEUTICS INC",
        "value": "86691734.06",
        "weight": "0.03816291",
        "shared": false
      },
      {
        "name": "KRYSTAL BIOTECH INC",
        "value": "79692753.28",
        "weight": "0.03508186",
        "shared": false
      },
      {
        "name": "BIOGEN INC",
        "value": "78804950.49",
        "weight": "0.03469104",
        "shared": true
      },
      {
        "name": "EXELIXIS INC",
        "value": "78543170.30",
        "weight": "0.03457580",
        "shared": false
      },
      {
        "name": "NEUROCRINE BIOSCIENCES INC",
        "value": "78243811.24",
        "weight": "0.03444402",
        "shared": true
      },
      {
        "name": "REGENERON PHARMACEUTICALS INC",
        "value": "78229027.36",
        "weight": "0.03443751",
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      },
      {
        "name": "VERTEX PHARMACEUTICALS INC",
        "value": "77623834.36",
        "weight": "0.03417110",
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      },
      {
        "name": "BIOMARIN PHARMACEUTICAL INC",
        "value": "77280579.60",
        "weight": "0.03401999",
        "shared": true
      },
      {
        "name": "ARGENX SE SPONSORED ADR",
        "value": "74722831.25",
        "weight": "0.03289403",
        "shared": true
      },
      {
        "name": "SAREPTA THERAPEUTICS INC",
        "value": "73643325.44",
        "weight": "0.03241882",
        "shared": false
      },
      {
        "name": "HALOZYME THERAPEUTICS INC",
        "value": "71923043.09",
        "weight": "0.03166153",
        "shared": false
      },
      {
        "name": "BIONTECH SE ADR",
        "value": "71789353.68",
        "weight": "0.03160268",
        "shared": true
      },
      {
        "name": "INCYTE CORP",
        "value": "71025869.72",
        "weight": "0.03126658",
        "shared": true
      },
      {
        "name": "BEONE MEDICINES LTD ADR",
        "value": "70878423.84",
        "weight": "0.03120167",
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      },
      {
        "name": "ILLUMINA INC",
        "value": "70471563.06",
        "weight": "0.03102257",
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      },
      {
        "name": "NATERA INC",
        "value": "68836158.02",
        "weight": "0.03030264",
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      },
      {
        "name": "ACADIA PHARMACEUTICALS INC",
        "value": "67035878.70",
        "weight": "0.02951013",
        "shared": false
      },
      {
        "name": "ALNYLAM PHARMACEUTICALS INC",
        "value": "66998528.04",
        "weight": "0.02949369",
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      },
      {
        "name": "BIO-TECHNE CORP",
        "value": "64153069.50",
        "weight": "0.02824108",
        "shared": true
      },
      {
        "name": "GENMAB A/S -SP ADR DEPOSITARY RECEIPT",
        "value": "63158329.77",
        "weight": "0.02780318",
        "shared": false
      },
      {
        "name": "VERACYTE INC",
        "value": "61789763.61",
        "weight": "0.02720072",
        "shared": false
      },
      {
        "name": "REPLIGEN CORP",
        "value": "56958076.06",
        "weight": "0.02507374",
        "shared": false
      },
      {
        "name": "BRUKER CORP",
        "value": "53490938.76",
        "weight": "0.02354746",
        "shared": false
      },
      {
        "name": "NEOGENOMICS INC",
        "value": "45471822.76",
        "weight": "0.02001733",
        "shared": false
      },
      {
        "name": "DREY-GVT CSH-I",
        "value": "1413994.11",
        "weight": "0.00062246",
        "shared": false
      },
      {
        "name": "DAIWA CAPITAL MARKETS AMERICA INC",
        "value": "188488.00",
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    ],
    "b_top": [
      {
        "name": "GILEAD SCIENCES INC",
        "value": "54367122.04",
        "weight": "0.14607861",
        "shared": true
      },
      {
        "name": "AMGEN INC",
        "value": "54037826.70",
        "weight": "0.14519383",
        "shared": true
      },
      {
        "name": "VERTEX PHARMACEUTICALS INC",
        "value": "29941846.62",
        "weight": "0.08045052",
        "shared": true
      },
      {
        "name": "REGENERON PHARMACEUTICALS INC",
        "value": "27917028.48",
        "weight": "0.07501005",
        "shared": true
      },
      {
        "name": "ARGENX SE SPONSORED ADR",
        "value": "19608673.00",
        "weight": "0.05268639",
        "shared": true
      },
      {
        "name": "INSMED INC",
        "value": "17053500.80",
        "weight": "0.04582092",
        "shared": false
      },
      {
        "name": "IQVIA HOLDINGS INC",
        "value": "15971241.54",
        "weight": "0.04291301",
        "shared": false
      },
      {
        "name": "ALNYLAM PHARMACEUTICALS INC",
        "value": "15259724.40",
        "weight": "0.04100124",
        "shared": true
      },
      {
        "name": "NATERA INC",
        "value": "14785460.69",
        "weight": "0.03972694",
        "shared": true
      },
      {
        "name": "UNITED THERAPEUTICS CORP DEL",
        "value": "14146130.88",
        "weight": "0.03800913",
        "shared": true
      },
      {
        "name": "BIOGEN INC",
        "value": "13830965.19",
        "weight": "0.03716232",
        "shared": true
      },
      {
        "name": "BEONE MEDICINES LTD ADR",
        "value": "12063515.34",
        "weight": "0.03241337",
        "shared": true
      },
      {
        "name": "MODERNA INC",
        "value": "11527028.00",
        "weight": "0.03097188",
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      },
      {
        "name": "REVOLUTION MEDICINES INC",
        "value": "10635746.25",
        "weight": "0.02857711",
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      },
      {
        "name": "ILLUMINA INC",
        "value": "9260893.58",
        "weight": "0.02488302",
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      },
      {
        "name": "INCYTE CORP",
        "value": "8354655.92",
        "weight": "0.02244806",
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      },
      {
        "name": "BIONTECH SE ADR",
        "value": "8006043.76",
        "weight": "0.02151138",
        "shared": true
      },
      {
        "name": "NEUROCRINE BIOSCIENCES INC",
        "value": "7196692.72",
        "weight": "0.01933674",
        "shared": true
      },
      {
        "name": "BIOMARIN PHARMACEUTICAL INC",
        "value": "5174314.53",
        "weight": "0.01390283",
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      },
      {
        "name": "BIO-TECHNE CORP",
        "value": "5006664.78",
        "weight": "0.01345237",
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      },
      {
        "name": "CHARLES RIVER LABS INTL INC",
        "value": "4750477.50",
        "weight": "0.01276402",
        "shared": false
      },
      {
        "name": "Icon Public Limited Company",
        "value": "4727173.88",
        "weight": "0.01270141",
        "shared": false
      },
      {
        "name": "QIAGEN NV",
        "value": "4256612.36",
        "weight": "0.01143706",
        "shared": false
      },
      {
        "name": "TEMPUS AI INC-A",
        "value": "3444633.50",
        "weight": "0.00925536",
        "shared": false
      },
      {
        "name": "State Street Navigator Securities Lending Portfolio II",
        "value": "853192.75",
        "weight": "0.00229244",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000940400-26-021488",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1329377/000094040026021488/0000940400-26-021488-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-054840",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1137360/000141036826054840/0001410368-26-054840-index.htm"
    }
  ]
}