{
  "page": "compare",
  "query": {
    "a": "BBC",
    "b": "XBI"
  },
  "retrieved_at": "2026-07-07T19:33:26+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": "Virtus LifeSci Biotech Clinical Trials ETF",
    "ticker": "BBC",
    "slug": "BBC",
    "series_id": "S000047353",
    "html_url": "https://fundwatcher.app/funds/BBC/"
  },
  "fund_b": {
    "name": "State Street(R) SPDR(R) S&P(R) Biotech ETF",
    "ticker": "XBI",
    "slug": "XBI",
    "series_id": "S000010018",
    "html_url": "https://fundwatcher.app/funds/XBI/"
  },
  "overlap": {
    "coverage_a_by_b": "0.3510768601047893703884720559",
    "coverage_b_by_a": "0.3510768601047893703884720559",
    "shared_count": 78,
    "as_of": {
      "a": "2026-04-30",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "DREYFUS GOVT CASH MGMT FUND",
        "value": "852187.85",
        "weight": "0.02233572",
        "shared": false
      },
      {
        "name": "ERASCA INC",
        "value": "816514.20",
        "weight": "0.02140072",
        "shared": true
      },
      {
        "name": "ENLIVEN THERAPEUTICS INC",
        "value": "674935.10",
        "weight": "0.01768995",
        "shared": false
      },
      {
        "name": "TANGO THERAPEUTICS INC",
        "value": "638179.16",
        "weight": "0.01672658",
        "shared": true
      },
      {
        "name": "ORUKA THERAPEUTICS INC",
        "value": "625472.63",
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      },
      {
        "name": "SPYRE THERAPEUTICS INC",
        "value": "611085.60",
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      },
      {
        "name": "ALUMIS INC",
        "value": "593053.80",
        "weight": "0.01554385",
        "shared": false
      },
      {
        "name": "DIANTHUS THERAPEUTICS INC",
        "value": "575177.80",
        "weight": "0.01507533",
        "shared": true
      },
      {
        "name": "KODIAK SCIENCES INC",
        "value": "503976.68",
        "weight": "0.01320916",
        "shared": true
      },
      {
        "name": "REVOLUTION MEDICINES INC",
        "value": "503843.52",
        "weight": "0.01320566",
        "shared": true
      },
      {
        "name": "CORVUS PHARMACEUTICALS INC",
        "value": "500905.44",
        "weight": "0.01312866",
        "shared": true
      },
      {
        "name": "REZOLUTE INC",
        "value": "490681.60",
        "weight": "0.01286069",
        "shared": false
      },
      {
        "name": "DEFINIUM THERAPEUTICS INC",
        "value": "481206.84",
        "weight": "0.01261236",
        "shared": false
      },
      {
        "name": "CG ONCOLOGY INC",
        "value": "449894.34",
        "weight": "0.01179166",
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      },
      {
        "name": "JADE BIOSCIENCES INC",
        "value": "449570.00",
        "weight": "0.01178316",
        "shared": false
      },
      {
        "name": "INHIBRX BIOSCIENCES INC",
        "value": "447971.07",
        "weight": "0.01174126",
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      },
      {
        "name": "RELAY THERAPEUTICS INC",
        "value": "445448.16",
        "weight": "0.01167513",
        "shared": true
      },
      {
        "name": "GH RESEARCH PLC",
        "value": "434722.75",
        "weight": "0.01139402",
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      },
      {
        "name": "NEKTAR THERAPEUTICS",
        "value": "429026.80",
        "weight": "0.01124473",
        "shared": false
      },
      {
        "name": "TYRA BIOSCIENCES INC",
        "value": "423811.00",
        "weight": "0.01110802",
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      },
      {
        "name": "VIR BIOTECHNOLOGY INC",
        "value": "421430.04",
        "weight": "0.01104562",
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      },
      {
        "name": "INTELLIA THERAPEUTICS INC",
        "value": "412474.52",
        "weight": "0.01081090",
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      },
      {
        "name": "CENTESSA PHARMACEUTICALS LTD ADR",
        "value": "410401.62",
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      },
      {
        "name": "ANAPTYSBIO INC",
        "value": "403516.47",
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      },
      {
        "name": "OMEROS CORP",
        "value": "397003.20",
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      },
      {
        "name": "TECTONIC THERAPEUTIC INC",
        "value": "390629.02",
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      },
      {
        "name": "ALLOGENE THERAPEUTICS INC",
        "value": "389338.44",
        "weight": "0.01020450",
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      },
      {
        "name": "COMPASS Pathways PLC, ADR",
        "value": "371007.00",
        "weight": "0.00972404",
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      },
      {
        "name": "EDGEWISE THERAPEUTICS INC",
        "value": "361767.60",
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      },
      {
        "name": "PALVELLA THERAPEUTICS INC",
        "value": "359039.36",
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      },
      {
        "name": "CAPRICOR THERAPEUTICS INC",
        "value": "356149.48",
        "weight": "0.00933463",
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      },
      {
        "name": "VAXCYTE INC",
        "value": "354945.24",
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      },
      {
        "name": "PHARVARIS NV",
        "value": "354258.24",
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      },
      {
        "name": "ARRIVENT BIOPHARMA INC",
        "value": "351317.00",
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        "shared": true
      },
      {
        "name": "XENON PHARMACEUTICALS INC",
        "value": "351034.56",
        "weight": "0.00920056",
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      },
      {
        "name": "NEUROGENE INC",
        "value": "344205.37",
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      },
      {
        "name": "SUMMIT THERAPEUTICS INC",
        "value": "337093.68",
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      },
      {
        "name": "AMYLYX PHARMACEUTICALS INC",
        "value": "337088.00",
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      },
      {
        "name": "CELLDEX THERAPEUTICS INC",
        "value": "329852.16",
        "weight": "0.00864538",
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      },
      {
        "name": "PRAXIS PRECISION MEDICINES INC",
        "value": "327119.58",
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      },
      {
        "name": "ARCUS BIOSCIENCES INC",
        "value": "326884.50",
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      },
      {
        "name": "ANNEXON INC",
        "value": "325990.45",
        "weight": "0.00854416",
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      },
      {
        "name": "TERNS PHARMACEUTICALS INC",
        "value": "324566.76",
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      },
      {
        "name": "LIQUIDIA TECHNOLOGIES INC",
        "value": "324188.28",
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      },
      {
        "name": "MONTE ROSA THERAPEUTICS INC",
        "value": "324056.30",
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      },
      {
        "name": "IMMUNOME INC",
        "value": "323499.88",
        "weight": "0.00847888",
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      },
      {
        "name": "BICARA THERAPEUTICS INC",
        "value": "322275.72",
        "weight": "0.00844680",
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      },
      {
        "name": "CELCUITY INC",
        "value": "318058.35",
        "weight": "0.00833626",
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      },
      {
        "name": "IRONWOOD PHARMA CL A (PEND)",
        "value": "318025.13",
        "weight": "0.00833539",
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      },
      {
        "name": "AbCellera Biologics Inc COM",
        "value": "316416.75",
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    ],
    "b_top": [
      {
        "name": "State Street Navigator Securities Lending Portfolio II",
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      },
      {
        "name": "APELLIS PHARMACEUTICALS INC",
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      {
        "name": "ALKERMES PLC",
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      {
        "name": "MADRIGAL PHARMACEUTICALS INC",
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      },
      {
        "name": "TG THERAPEUTICS INC",
        "value": "100334399.22",
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      },
      {
        "name": "INSMED INC",
        "value": "99394814.40",
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      },
      {
        "name": "SCHOLAR ROCK HOLDING CORP",
        "value": "96450199.40",
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      },
      {
        "name": "APOGEE THERAPEUTICS INC",
        "value": "95481942.98",
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      },
      {
        "name": "PROTAGONIST THERAPEUTICS INC",
        "value": "92548683.40",
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      },
      {
        "name": "SUMMIT THERAPEUTICS INC",
        "value": "92267854.08",
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      },
      {
        "name": "UNITED THERAPEUTICS CORP DEL",
        "value": "92226179.40",
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      },
      {
        "name": "PRAXIS PRECISION MEDICINES INC",
        "value": "91905341.88",
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      },
      {
        "name": "ARROWHEAD PHARMACEUTICALS INC",
        "value": "91429578.90",
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      },
      {
        "name": "COGENT BIOSCIENCES INC",
        "value": "90378407.49",
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      },
      {
        "name": "BRIDGEBIO PHARMA INC",
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      {
        "name": "PTC THERAPEUTICS INC",
        "value": "87892537.23",
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      },
      {
        "name": "CYTOKINETICS INC",
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      {
        "name": "ALNYLAM PHARMACEUTICALS INC",
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      {
        "name": "EXELIXIS INC",
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      },
      {
        "name": "NUVALENT INC-A",
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      {
        "name": "KYMERA THERAPEUTICS INC",
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        "name": "CG ONCOLOGY INC",
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      {
        "name": "NATERA INC",
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      {
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      },
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        "name": "TWIST BIOSCIENCE CORP",
        "value": "85917870.72",
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      },
      {
        "name": "KRYSTAL BIOTECH INC",
        "value": "85833794.64",
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      {
        "name": "VAXCYTE INC",
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      {
        "name": "MIRUM PHARMACEUTICALS INC",
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        "name": "IONIS PHARMACEUTICALS INC",
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        "name": "TRAVERE THERAPEUTICS INC",
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      {
        "name": "ARCELLX INC",
        "value": "85056933.70",
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      {
        "name": "REGENERON PHARMACEUTICALS INC",
        "value": "84526816.00",
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      },
      {
        "name": "INCYTE CORP",
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      },
      {
        "name": "CELCUITY INC",
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      {
        "name": "REVOLUTION MEDICINES INC",
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      },
      {
        "name": "HALOZYME THERAPEUTICS INC",
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        "name": "RHYTHM PHARMACEUTICALS INC",
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      {
        "name": "BIOGEN INC",
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      {
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        "name": "ABBVIE INC",
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        "name": "CRISPR THERAPEUTICS AG",
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        "name": "BIOMARIN PHARMACEUTICAL INC",
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        "name": "ROIVANT SCIENCES LTD",
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      {
        "name": "AMGEN INC",
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      {
        "name": "IMMUNITYBIO INC",
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        "name": "BEAM THERAPEUTICS INC",
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        "name": "VIKING THERAPEUTICS INC",
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        "name": "VERA THERAPEUTICS INC",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000940400-26-024966",
      "as_of": "2026-04-30",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1559109/000094040026024966/0000940400-26-024966-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-055543",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1064642/000141036826055543/0001410368-26-055543-index.htm"
    }
  ]
}