Institutional shares held 126 Million
1.13M calls
1.43M puts
Total value of holdings $18.5B
$165M calls
$210M puts
Market Cap $21.5B
144,000,992 Shares Out.
Institutional ownership 87.7%
# of Institutions 1,037


Latest Institutional Activity in BIIB

Top Purchases

Q3 2024
Man Group PLC Shares Held: 857K ($128M)
Q3 2024
Barclays PLC Shares Held: 921K ($138M)
Q3 2024
Two Sigma Investments, LP Shares Held: 649K ($96.9M)
Q3 2024
Jpmorgan Chase & CO Shares Held: 5.1M ($762M)
Q3 2024
Citadel Advisors LLC Shares Held: 372K ($55.6M)

Top Sells

Q3 2024
T. Rowe Price Investment Management, Inc. Shares Held: 4.26M ($636M)
Q3 2024
Clearbridge Investments, LLC Shares Held: 602K ($89.9M)
Q3 2024
Van Eck Associates Corp Shares Held: 98.9K ($14.8M)
Q3 2024
Sarissa Capital Management LP Shares Held: 27K ($4.03M)
Q3 2024
American Century Companies Inc Shares Held: 217K ($32.4M)

About BIIB

Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases. The company offers TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; and FUMADERM to treat plaque psoriasis. It also provides BENEPALI, an etanercept biosimilar referencing ENBREL; ADUHELM for the treatment of Alzheimer's disease; IMRALDI, an adalimumab biosimilar referencing HUMIRA; and FLIXABI, an infliximab biosimilar referencing REMICADE. In addition, the company offers RITUXAN for treating non-Hodgkin's lymphoma, chronic lymphocytic leukemia (CLL), rheumatoid arthritis, two forms of ANCA-associated vasculitis, and pemphigus vulgaris; RITUXAN HYCELA for non-Hodgkin's lymphoma and CLL; GAZYVA to treat CLL and follicular lymphoma; and OCREVUS for treating relapsing MS and primary progressive MS; and other anti-CD20 therapies. Further, it develops BIIB135, BIIB061, BIIB091, and BIIB107 for MS and neuroimmunology; Aducanumab, Lecanemab, BIIB076, and BIIB080 to treat Alzheimer's disease and dementia; BIIB067, BIIB078, BIIB105, BIIB100, and BIIB110 to treat neuromuscular disorders; BIIB124, BIIB094, BIIB118, BIIB101, and BIIB122 for treating Parkinson's disease and movement disorders; BIIB125 and BIIB104 for treating neuropsychiatry; Dapirolizumab pegol and BIIB059 to treat immunology related diseases; BIIB093 and BIIB131 to treat acute neurology; BIIB074 for neuropathic pain; and BYOOVIZ, BIIB800, and SB15 biosimilars, which are under various stages of development. The company has collaboration and license agreements with Acorda Therapeutics, Inc.; Alkermes Pharma Ireland Limited; Denali Therapeutics Inc.; Eisai Co., Ltd.; Genentech, Inc.; Neurimmune SubOne AG; Ionis Pharmaceuticals, Inc.; Samsung Bioepis Co., Ltd.; Sangamo Therapeutics, Inc.; and Sage Therapeutics, Inc. Biogen Inc. was founded in 1978 and is headquartered in Cambridge, Massachusetts.


Insider Transactions at BIIB

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
85.1K Shares
From 19 Insiders
Grant, award, or other acquisition 11.2K shares
Exercise of conversion of derivative security 53.4K shares
Open market or private purchase 455 shares
Bona fide gift 20.1K shares
Sell / Disposition
43.3K Shares
From 11 Insiders
Payment of exercise price or tax liability 21.2K shares
Bona fide gift 20.1K shares
Open market or private sale 2.06K shares

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