{
  "page": "compare",
  "query": {
    "a": "XBI",
    "b": "BIPIX"
  },
  "retrieved_at": "2026-07-07T19:11:54+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": "State Street(R) SPDR(R) S&P(R) Biotech ETF",
    "ticker": "XBI",
    "slug": "XBI",
    "series_id": "S000010018",
    "html_url": "https://fundwatcher.app/funds/XBI/"
  },
  "fund_b": {
    "name": "BIOTECHNOLOGY ULTRASECTOR PROFUND",
    "ticker": "BIPIX",
    "slug": "BIPIX",
    "series_id": "S000003107",
    "html_url": "https://fundwatcher.app/funds/BIPIX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.6539443881904164672653191760",
    "shared_count": 138,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-04-30"
    },
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      },
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        "name": "ALKERMES PLC",
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        "name": "TG THERAPEUTICS INC",
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      },
      {
        "name": "SCHOLAR ROCK HOLDING CORP",
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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",
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        "name": "UNITED THERAPEUTICS CORP DEL",
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      },
      {
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        "name": "ARROWHEAD PHARMACEUTICALS INC",
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        "name": "COGENT BIOSCIENCES INC",
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        "name": "BRIDGEBIO PHARMA INC",
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        "name": "PTC THERAPEUTICS INC",
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        "name": "CYTOKINETICS INC",
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        "name": "ABBVIE INC",
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        "name": "GILEAD SCIENCES INC",
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        "name": "CRISPR THERAPEUTICS AG",
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        "name": "BIOMARIN PHARMACEUTICAL INC",
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        "name": "VERA THERAPEUTICS INC",
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        "name": "US ULTRA BOND CBT Sep25",
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      {
        "name": "Invesco Government & Agency Portfolio, Institutional Class",
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      {
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        "name": "TG THERAPEUTICS INC",
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      {
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      {
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      {
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      {
        "name": "COGENT BIOSCIENCES INC",
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      {
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        "name": "ULTRAGENYX PHARMA INC",
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        "name": "ACADIA PHARMACEUTICALS INC",
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        "name": "RHYTHM PHARMACEUTICALS INC",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "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"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000910472-26-009384",
      "as_of": "2026-04-30",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1039803/000091047226009384/0000910472-26-009384-index.htm"
    }
  ]
}