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Biogen
BIIB

Overview Fund Activity

846 hedge funds and large institutions have $16.1B invested in Biogen in 2025 Q2 according to their latest regulatory filings, with 94 funds opening new positions, 336 increasing their positions, 257 reducing their positions, and 99 closing their positions.

Holders
846
Holders Change
-22
Holders Change %
-2.53%
% of All Funds
11.36%
Holding in Top 10
5
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+150%
% of All Funds
0.07%
New
94
Increased
336
Reduced
257
Closed
99
Calls
$292M
Puts
$203M
Net Calls
+$88.9M
Net Calls Change
+$365M

Top Buyers

1
Point72 Asset Management
1
Point72 Asset Management
Connecticut
$481M
2
Norges Bank
2
Norges Bank
Norway
$284M
3
Alyeska Investment Group
3
Alyeska Investment Group
Illinois
$63.9M
4
Arrowstreet Capital
4
Arrowstreet Capital
Massachusetts
$78.4M
5
Fidelity Investments
5
Fidelity Investments
Massachusetts
$210M

Top Sellers

1
BlackRock
1
BlackRock
New York
$1.7B
2
T. Rowe Price Investment Management
2
T. Rowe Price Investment Management
Maryland
$175M
3
Amundi
3
Amundi
France
$77.2M
4
SG Americas Securities
4
SG Americas Securities
New York
$2.82M
5
Qube Research & Technologies (QRT)
5
Qube Research & Technologies (QRT)
United Kingdom
$93.4M
Name Market Value Shares Shares
Change 		Shares
Change %
JLBC
101
J.L. Bainbridge & Co
Florida
$15.4M 122,345 -2,177 -2%
Nomura Holdings
102
Nomura Holdings
Japan
$15.2M 120,815 -92,955 -43%
Federated Hermes
103
Federated Hermes
Pennsylvania
$15.1M 120,277 +17,069 +17%
Capital Fund Management (CFM)
104
Capital Fund Management (CFM)
France
$14.8M 117,694 -95,321 -45%
LBA
105
Letko, Brosseau & Associates
Quebec, Canada
$14.8M 117,655 +2,045 +2%
BBVA
106
Banco Bilbao Vizcaya Argentaria
Spain
$14.4M 114,872 -14,641 -11%
IC
107
IEQ Capital
California
$14.1M 112,251 +42,522 +61%
FGP
108
Freestone Grove Partners
California
$13.9M 111,004 +111,004 New
New York State Teachers Retirement System (NYSTRS)
109
New York State Teachers Retirement System (NYSTRS)
New York
$13.9M 110,649 +2,973 +3%
DekaBank Deutsche Girozentrale
110
DekaBank Deutsche Girozentrale
Germany
$13.7M 108,721 -477 -0.4%
Aviva
111
Aviva
United Kingdom
$13.6M 108,674 +6,945 +7%
Axa
112
Axa
France
$13.6M 108,572 -45,397 -29%
Manulife (Manufacturers Life Insurance)
113
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$13.5M 107,753 -11,503 -10%
IMRF
114
Illinois Municipal Retirement Fund
Illinois
$13.4M 106,921 +42,783 +67%
Bank of Montreal
115
Bank of Montreal
Ontario, Canada
$13M 103,314 -29,654 -22%
Handelsbanken Fonder
116
Handelsbanken Fonder
Sweden
$12.3M 97,601 +17,347 +22%
PE
117
Point72 Europe
United Kingdom
$12M 95,680 +13,204 +16%
WP
118
Woodline Partners
California
$12M 95,560 -29,602 -24%
Group One Trading
119
Group One Trading
Illinois
$11.3M 90,218 +77,841 +629%
CAM
120
Cresset Asset Management
Illinois
$11M 87,650 +85,690 +4,372%
APG Asset Management
121
APG Asset Management
Netherlands
$10.5M 98,295 +1,863 +2%
SFM
122
Sphera Funds Management
Israel
$10.4M 82,738 +60,000 +264%
Mackenzie Financial
123
Mackenzie Financial
Ontario, Canada
$10.3M 82,336 +35,652 +76%
American Century Companies
124
American Century Companies
Missouri
$10.2M 81,253 +20,778 +34%
Mitsubishi UFJ Trust & Banking
125
Mitsubishi UFJ Trust & Banking
Japan
$10.2M 81,195 +3,962 +5%
3 4
5
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