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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 %
USAA
876
United Services Automobile Association
Texas
– – -3,604 Closed
BT
877
Banque Transatlantique
France
– – -3,388 Closed
TC
878
TownSquare Capital
Utah
– – -2,985 Closed
GCP
879
GSA Capital Partners
United Kingdom
– – -2,963 Closed
SCM
880
Stevens Capital Management
Pennsylvania
– – -2,884 Closed
FFN
881
Focus Financial Network
Minnesota
– – -2,782 Closed
MG
882
Mather Group
Illinois
– – -2,767 Closed
RS
883
R Squared
Hong Kong
– – -2,760 Closed
SCI
884
S&CO Inc
Massachusetts
– – -2,572 Closed
TCM
885
Teza Capital Management
Illinois
– – -2,551 Closed
OAM
886
Oxford Asset Management
United Kingdom
– – -2,529 Closed
LCM
887
Landscape Capital Management
New Jersey
– – -2,403 Closed
TSWM
888
Triangle Securities Wealth Management
North Carolina
– – -2,380 Closed
ALAM
889
Asahi Life Asset Management
Japan
– – -2,345 Closed
MYAM
890
Meiji Yasuda Asset Management
Japan
– – -2,163 Closed
WLIM
891
White Lighthouse Investment Management
Massachusetts
– – -2,125 Closed
SI
892
Stephens Inc
Arkansas
– – -2,056 Closed
IAA
893
Independent Advisor Alliance
North Carolina
– – -2,008 Closed
BCM
894
Bayesian Capital Management
New York
– – -1,940 Closed
HWAM
895
Hennion & Walsh Asset Management
New Jersey
– – -1,891 Closed
AFGAS
896
Allegiance Financial Group Advisory Services
Virginia
– – -1,847 Closed
CWA
897
Cura Wealth Advisors
Illinois
– – -1,812 Closed
LFM
898
LGT Fund Management
Liechtenstein
– – -1,744 Closed
AWM
899
AE Wealth Management
Kansas
– – -1,731 Closed
PPW
900
Parcion Private Wealth
Washington
– – -1,724 Closed
34 35
36
37 38