{
  "page": "compare",
  "query": {
    "a": "FBTIX",
    "b": "RYOIX"
  },
  "retrieved_at": "2026-07-07T16:43:55+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 Advisor Biotechnology Fund",
    "ticker": "FBTIX",
    "slug": "FBTIX",
    "series_id": "S000005321",
    "html_url": "https://fundwatcher.app/funds/FBTIX/"
  },
  "fund_b": {
    "name": "Biotechnology Fund",
    "ticker": "RYOIX",
    "slug": "RYOIX",
    "series_id": "S000003802",
    "html_url": "https://fundwatcher.app/funds/RYOIX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.3828496794213316137288400005",
    "coverage_b_by_a": "0.3828496794213316137288400007",
    "shared_count": 25,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "ABBVIE INC",
        "value": "309890235.80",
        "weight": "0.16044894",
        "shared": true
      },
      {
        "name": "GILEAD SCIENCES INC",
        "value": "122658995.00",
        "weight": "0.06350799",
        "shared": true
      },
      {
        "name": "ALNYLAM PHARMACEUTICALS INC",
        "value": "93705499.16",
        "weight": "0.04851701",
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      },
      {
        "name": "Ascendis Pharma A/S",
        "value": "83798312.50",
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      },
      {
        "name": "COGENT BIOSCIENCES INC",
        "value": "71404090.38",
        "weight": "0.03697022",
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      },
      {
        "name": "ARGENX SE SPONSORED ADR",
        "value": "68080500.00",
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      },
      {
        "name": "Fidelity Securities Lending Cash Central Fund",
        "value": "66944838.29",
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        "shared": false
      },
      {
        "name": "INSMED INC",
        "value": "64677501.00",
        "weight": "0.03348746",
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      },
      {
        "name": "VIRIDIAN THERAPEUTICS INC",
        "value": "58821312.00",
        "weight": "0.03045535",
        "shared": false
      },
      {
        "name": "BIOGEN INC",
        "value": "52905649.00",
        "weight": "0.02739246",
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      },
      {
        "name": "AMGEN INC",
        "value": "51522341.64",
        "weight": "0.02667624",
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      },
      {
        "name": "VAXCYTE INC",
        "value": "42659344.53",
        "weight": "0.02208733",
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      },
      {
        "name": "STRUCTURE THERAPEUTICS INC ADR",
        "value": "42562140.00",
        "weight": "0.02203700",
        "shared": false
      },
      {
        "name": "NUVALENT INC-A",
        "value": "42417842.96",
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      },
      {
        "name": "DIANTHUS THERAPEUTICS INC",
        "value": "38978010.18",
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      {
        "name": "AMYLYX PHARMACEUTICALS INC",
        "value": "34770428.00",
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      },
      {
        "name": "MODERNA INC",
        "value": "29716401.00",
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      },
      {
        "name": "APOGEE THERAPEUTICS INC",
        "value": "29652380.89",
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      },
      {
        "name": "XENON PHARMACEUTICALS INC",
        "value": "29148185.58",
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      },
      {
        "name": "CRINETICS PHARMACEUTICALS INC",
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      {
        "name": "PRAXIS PRECISION MEDICINES INC",
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      },
      {
        "name": "SCHOLAR ROCK HOLDING CORP",
        "value": "25822197.12",
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      },
      {
        "name": "ORUKA THERAPEUTICS INC",
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      {
        "name": "SPYRE THERAPEUTICS INC",
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      {
        "name": "UCB SA",
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      {
        "name": "UNIQURE N.V.",
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      },
      {
        "name": "UPSTREAM BIO INC",
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      },
      {
        "name": "ROIVANT SCIENCES LTD",
        "value": "21105444.00",
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      },
      {
        "name": "NATERA INC",
        "value": "20663916.00",
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      {
        "name": "OLEMA PHARMACEUTICALS INC",
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      {
        "name": "VIKING THERAPEUTICS INC",
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      {
        "name": "NEWAMSTERDAM PHARMA COMPANY NV",
        "value": "18248768.00",
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      {
        "name": "CYTOKINETICS INC",
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      {
        "name": "KYMERA THERAPEUTICS INC",
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        "name": "JADE BIOSCIENCES INC",
        "value": "13960694.23",
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      {
        "name": "CG ONCOLOGY INC",
        "value": "12955245.00",
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      },
      {
        "name": "RHYTHM PHARMACEUTICALS INC",
        "value": "12938024.00",
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      {
        "name": "ENLIVEN THERAPEUTICS INC",
        "value": "12544229.90",
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      },
      {
        "name": "ZENAS BIOPHARMA INC",
        "value": "11560534.92",
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      },
      {
        "name": "DISC MEDICINE INC",
        "value": "11004337.04",
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      },
      {
        "name": "ARCELLX INC",
        "value": "9761499.00",
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      },
      {
        "name": "STOKE THERAPEUTICS INC",
        "value": "9639018.00",
        "weight": "0.00499070",
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      },
      {
        "name": "SONOMA BIOTHERAPEUTICS INC SER B PFD PP",
        "value": "9439952.72",
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      },
      {
        "name": "TRAVERE THERAPEUTICS INC",
        "value": "9364308.00",
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      },
      {
        "name": "MINERALYS THERAPEUTICS INC",
        "value": "8241452.00",
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      },
      {
        "name": "CYTOMX THERAPEUTICS INC",
        "value": "7682928.19",
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      },
      {
        "name": "ANAPTYSBIO INC",
        "value": "7035644.00",
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      },
      {
        "name": "SOLENO THERAPEUTICS INC",
        "value": "6979360.00",
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      },
      {
        "name": "CELLDEX THERAPEUTICS INC",
        "value": "6781039.20",
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      },
      {
        "name": "REZOLUTE INC",
        "value": "6630234.00",
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    ],
    "b_top": [
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        "name": "ABBVIE INC",
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      },
      {
        "name": "AMGEN INC",
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      {
        "name": "GILEAD SCIENCES INC",
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      {
        "name": "VERTEX PHARMACEUTICALS INC",
        "value": "5411618.26",
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      {
        "name": "REGENERON PHARMACEUTICALS INC",
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      {
        "name": "ALNYLAM PHARMACEUTICALS INC",
        "value": "3517809.84",
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      {
        "name": "INSMED INC",
        "value": "3315695.04",
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      {
        "name": "BEONE MEDICINES LTD ADR",
        "value": "3087003.15",
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      },
      {
        "name": "NATERA INC",
        "value": "2828858.55",
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      {
        "name": "UNITED THERAPEUTICS CORP DEL",
        "value": "2793528.78",
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      {
        "name": "BIOGEN INC",
        "value": "2713833.99",
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      {
        "name": "ROYALTY PHARMA PLC",
        "value": "2673799.83",
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      {
        "name": "ILLUMINA INC",
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      {
        "name": "REVOLUTION MEDICINES INC",
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      },
      {
        "name": "MODERNA INC",
        "value": "2225954.40",
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      },
      {
        "name": "ASTRAZENECA PLC",
        "value": "2164292.28",
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      {
        "name": "ARGENX SE SPONSORED ADR",
        "value": "2162270.25",
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      },
      {
        "name": "INCYTE CORP",
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      {
        "name": "VIATRIS INC",
        "value": "2027486.23",
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      {
        "name": "BRIDGEBIO PHARMA INC",
        "value": "1987494.64",
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      {
        "name": "ALKERMES PLC",
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      {
        "name": "JAZZ PHARMA PLC",
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      {
        "name": "NEUROCRINE BIOSCIENCES INC",
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      },
      {
        "name": "GUARDANT HEALTH INC",
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      },
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        "name": "ROIVANT SCIENCES LTD",
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        "name": "IONIS PHARMACEUTICALS INC",
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      {
        "name": "EXELIXIS INC",
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      },
      {
        "name": "MEDPACE HOLDINGS INC",
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      {
        "name": "BIOMARIN PHARMACEUTICAL INC",
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        "name": "APELLIS PHARMACEUTICALS INC",
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      {
        "name": "CYTOKINETICS INC",
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      },
      {
        "name": "VAXCYTE INC",
        "value": "1533116.13",
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      },
      {
        "name": "CRISPR THERAPEUTICS AG",
        "value": "1524808.78",
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      },
      {
        "name": "HALOZYME THERAPEUTICS INC",
        "value": "1467876.56",
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      },
      {
        "name": "BIONTECH SE ADR",
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      },
      {
        "name": "AXSOME THERAPEUTICS INC",
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      {
        "name": "Ascendis Pharma A/S",
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      {
        "name": "COGENT BIOSCIENCES INC",
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      },
      {
        "name": "ARCELLX INC",
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      },
      {
        "name": "TG THERAPEUTICS INC",
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      {
        "name": "PTC THERAPEUTICS INC",
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      {
        "name": "SCHOLAR ROCK HOLDING CORP",
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        "name": "MADRIGAL PHARMACEUTICALS INC",
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        "name": "MIRUM PHARMACEUTICALS INC",
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      },
      {
        "name": "PROTAGONIST THERAPEUTICS INC",
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      },
      {
        "name": "AMICUS THERAPEUTICS INC",
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      },
      {
        "name": "RHYTHM PHARMACEUTICALS INC",
        "value": "1057381.26",
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      },
      {
        "name": "APOGEE THERAPEUTICS INC",
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      },
      {
        "name": "KYMERA THERAPEUTICS INC",
        "value": "970994.82",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000035402-26-001936",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/315700/000003540226001936/0000035402-26-001936-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000940400-26-023170",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/899148/000094040026023170/0000940400-26-023170-index.htm"
    }
  ]
}