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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 %
FG
826
Fairman Group
Pennsylvania
$754 – – –
LI
827
LRI Investments
Florida
$754 – – –
WA
828
WestEnd Advisors
North Carolina
$754 – – –
QWM
829
Quaker Wealth Management
New Jersey
$754 +$754 +6 New
PWM
830
Parkworth Wealth Management
California
$754 +$754 +6 New
WWM
831
Wolff Wiese Magana
California
$628 -$1.38K -11 -69%
AP
832
Atwood & Palmer
Missouri
$628 – – –
EWM
833
Evermay Wealth Management
Virginia
$628 – – –
JWA
834
JFS Wealth Advisors
Pennsylvania
$628 +$251 +2 +67%
DF
835
Dunhill Financial
United Kingdom
$627 -$941 -6 -60%
RAM
836
Riggs Asset Management
Pennsylvania
$503 +$503 +4 New
SC
837
Stephens Consulting
Michigan
$503 +$503 +4 New
DF
838
DecisionPoint Financial
Arizona
$391 +$391 +3 New
CT
839
Colonial Trust
South Carolina
$377 -$251 -2 -40%
WA
840
WPG Advisers
Maryland
$377 – – –
DPW
841
DiNuzzo Private Wealth
Pennsylvania
$252 -$3.78K -30 -94%
CW
842
Curio Wealth
Maryland
$251 +$126 +1 +100%
HIA
843
HFM Investment Advisors
New Jersey
$251 +$126 +1 +100%
AA
844
Ancora Advisors
Ohio
$251 +$251 +2 New
VWA
845
Valued Wealth Advisors
Utah
$126 – – –
RJA
846
Ross\Johnson & Associates
Minnesota
$126 – – –
CFD
847
Creative Financial Designs
Indiana
$126 +$126 +1 New
TFM
848
TFC Financial Management
Massachusetts
$126 +$126 +1 New
BHWM
849
Bay Harbor Wealth Management
Maryland
$125 +$125 +1 New
WOC
850
West Oak Capital
California
$57 – – –
32 33
34
35 36