Guru Ownership Trend
Guru Analysis for Biogen Inc. (BIIB)
Biogen Inc. (BIIB), a key player in the Healthcare sector, continues to attract institutional attention.
As of Q4 2025, a total of 11 Super Investors (Gurus) hold positions in the company, with a combined stake valued at approximately $1.14 B.
Top institutional holders include Steven Cohen and Cliff Asness.
Institutional sentiment is currently Bearish. This is evidenced by a $290.83 M net outflow during the quarter.
Recent activity highlights Larry Robbins who opened a new position. Conversely, Renaissance Technologies reduced exposure by 58.6%.
Key Holders
Top 5 by Value
Top 5 by Conviction
Recent Activity Breakdown (Q4 2025)
Guru Consensus (Q4 2025)
FAQs for Biogen Inc. (BIIB)
Major holders include Steven Cohen ($495.09 M), Cliff Asness ($269.02 M), Sarah Ketterer ($91.71 M). According to the latest reported data, 11 tracked investment managers collectively hold approximately 6.2 M shares.
According to the latest 13F reporting period, sentiment appears Bearish (Net Selling). There was a net outflow of $290.83 M, with 4 managers increasing positions and 8 managers reducing holdings.
During the most recent reporting period, 7 managers trimmed their positions, while 1 fully exited BIIB. The total reported sell value was $346.23 M.
Yes, 1 managers opened new positions in BIIB, and 3 increased their existing holdings. The total reported buy value was $55.4 M.
