Chronology 13F
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BIOGEN INC

BIIB · Health Care

4 whale investors · Q1 2021

Whale investors

Concentrated managers reporting this company in Q1 2021.

4 holders
  1. Southeastern Asset ManagementMason Hawkins
    EquityQ1 2021
    $168.94M3.61% portfolio
  2. Mangrove PartnersNathaniel August
    CallQ1 2021
    $28.87M44.43% portfolio

Holdings reflect reported 13F data for Q1 2021 and may be delayed or incomplete.