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Biogen
BIIB

Overview Fund Activity

868 hedge funds and large institutions have $17.4B invested in Biogen in 2025 Q1 according to their latest regulatory filings, with 127 funds opening new positions, 328 increasing their positions, 264 reducing their positions, and 105 closing their positions.

Holders
868
Holders Change
+8
Holders Change %
+0.93%
% of All Funds
11.79%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.03%
New
127
Increased
328
Reduced
264
Closed
105
Calls
$345M
Puts
$621M
Net Calls
-$276M
Net Calls Change
-$229M

Top Buyers

1
AQR Capital Management
1
AQR Capital Management
Connecticut
$187M
2
Balyasny Asset Management
2
Balyasny Asset Management
Illinois
$108M
3
SG Americas Securities
3
SG Americas Securities
New York
$98.5M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$179M
5
Point72 Asset Management
5
Point72 Asset Management
Connecticut
$55.7M

Top Sellers

1
Pacer Advisors
1
Pacer Advisors
Pennsylvania
$185M
2
BGC
2
Beutel, Goodman & Co
Ontario, Canada
$1K
3
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$158M
4
JPMorgan Chase & Co
4
JPMorgan Chase & Co
New York
$200M
5
O
5
OrbiMed
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
WP
101
Woodline Partners
California
$17.1M 125,162 +37,005 +42%
Victory Capital Management
102
Victory Capital Management
Texas
$17.1M 124,756 +5,723 +5%
JLBC
103
J.L. Bainbridge & Co
Florida
$17M 124,522 +26,539 +27%
SCM
104
Suvretta Capital Management
New York
$16.5M 120,736 +5,300 +5%
Fidelity International
105
Fidelity International
Bermuda
$16.4M 120,000 +15,283 +15%
Manulife (Manufacturers Life Insurance)
106
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$16.3M 119,256 -4,410 -4%
Nordea Investment Management
107
Nordea Investment Management
Sweden
$16.3M 119,124 +1,161 +1%
LBA
108
Letko, Brosseau & Associates
Quebec, Canada
$15.8M 115,610 -3,972 -3%
CCM
109
Cutter Capital Management
New York
$15.5M 113,500 +113,500 New
DekaBank Deutsche Girozentrale
110
DekaBank Deutsche Girozentrale
Germany
$15M 109,198 +477 +0.4%
New York State Teachers Retirement System (NYSTRS)
111
New York State Teachers Retirement System (NYSTRS)
New York
$14.7M 107,676 -3,452 -3%
Tudor Investment Corp
112
Tudor Investment Corp
Connecticut
$14.5M 105,851 +83,848 +381%
Federated Hermes
113
Federated Hermes
Pennsylvania
$14.1M 103,208 +1,805 +2%
Ameriprise
114
Ameriprise
Minnesota
$14M 102,551 -41,472 -29%
Aviva
115
Aviva
United Kingdom
$13.9M 101,729 +13,998 +16%
GAM
116
Gotham Asset Management
New York
$13.6M 99,228 +9,602 +11%
NL
117
Nuveen LLC
North Carolina
$12.5M 146,431 +146,431 New
APG Asset Management
118
APG Asset Management
Netherlands
$12.2M 96,432 -9,014 -9%
State of Wisconsin Investment Board
119
State of Wisconsin Investment Board
Wisconsin
$12.1M 88,576 +8,435 +11%
PE
120
Point72 Europe
United Kingdom
$11.3M 82,476 +82,476 New
Caisse de Depot et Placement du Quebec (CDPQ)
121
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$11.2M 81,900 +81,900 New
Handelsbanken Fonder
122
Handelsbanken Fonder
Sweden
$11M 80,254 -1,681 -2%
Mitsubishi UFJ Trust & Banking
123
Mitsubishi UFJ Trust & Banking
Japan
$10.6M 77,233 -4,381 -5%
Chevy Chase Trust
124
Chevy Chase Trust
Maryland
$10.6M 77,115 +295 +0.4%
EGM
125
Engineers Gate Manager
New York
$10.5M 76,958 +48,915 +174%
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5
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