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Biogen
BIIB

Overview Fund Activity

850 hedge funds and large institutions have $16.2B invested in Biogen in 2025 Q2 according to their latest regulatory filings, with 94 funds opening new positions, 337 increasing their positions, 260 reducing their positions, and 99 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
850
Holders Change
-18
Holders Change %
-2.07%
% of All Funds
11.4%
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
337
Reduced
260
Closed
99
Calls
$381M
Puts
$333M
Net Calls
+$47.6M
Net Calls Change
+$323M

Top Buyers

1
Point72 Asset Management
Point72 Asset Management
Connecticut
$481M
2
Alyeska Investment Group
Alyeska Investment Group
Illinois
$63.9M
3
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
$78.4M
4
Fidelity Investments
Fidelity Investments
Massachusetts
$210M
5
A
AustralianSuper
Australia
$92.9M

Top Sellers

1
BlackRock
BlackRock
New York
$1.7B
2
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
$175M
3
Amundi
Amundi
France
$77.2M
4
SG Americas Securities
SG Americas Securities
New York
$2.82M
5
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
$93.4M
Name Holding Trade Value Shares
Change 		Shares
Change %
AC
876
Allstate Corporation
Illinois
– -$628K -4,589 Closed
HIM
877
Hillsdale Investment Management
Ontario, Canada
– -$576K -4,210 Closed
MC
878
Machina Capital
France
– -$567K -4,146 Closed
WIA
879
Wealthedge Investment Advisors
New York
– -$530K -3,873 Closed
USAA
880
United Services Automobile Association
Texas
– -$499K -3,604 Closed
BT
881
Banque Transatlantique
France
– -$428K -3,388 Closed
TC
882
TownSquare Capital
Utah
– -$408K -2,985 Closed
GCP
883
GSA Capital Partners
United Kingdom
– -$405K -2,963 Closed
SCM
884
Stevens Capital Management
Pennsylvania
– -$395K -2,884 Closed
FFN
885
Focus Financial Network
Minnesota
– -$381K -2,782 Closed
MG
886
Mather Group
Illinois
– -$379K -2,767 Closed
RS
887
R Squared
Hong Kong
– -$378K -2,760 Closed
SCI
888
S&CO Inc
Massachusetts
– -$351K -2,572 Closed
TCM
889
Teza Capital Management
Illinois
– -$349K -2,551 Closed
OAM
890
Oxford Asset Management
United Kingdom
– -$346K -2,529 Closed
LCM
891
Landscape Capital Management
New Jersey
– -$329K -2,403 Closed
TSWM
892
Triangle Securities Wealth Management
North Carolina
– -$326K -2,380 Closed
ALAM
893
Asahi Life Asset Management
Japan
– -$321K -2,345 Closed
MYAM
894
Meiji Yasuda Asset Management
Japan
– -$296K -2,163 Closed
WLIM
895
White Lighthouse Investment Management
Massachusetts
– -$291K -2,125 Closed
SI
896
Stephens Inc
Arkansas
– -$281K -2,056 Closed
IAA
897
Independent Advisor Alliance
North Carolina
– -$275K -2,008 Closed
BCM
898
Bayesian Capital Management
New York
– -$265K -1,940 Closed
HWAM
899
Hennion & Walsh Asset Management
New Jersey
– -$259K -1,891 Closed
AFGAS
900
Allegiance Financial Group Advisory Services
Virginia
– -$253K -1,847 Closed
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