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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 %
QWM
826
Quaker Wealth Management
New Jersey
$754 6 +6 New
WWM
827
Wolff Wiese Magana
California
$628 5 -11 -69%
AP
828
Atwood & Palmer
Missouri
$628 5 – –
EWM
829
Evermay Wealth Management
Virginia
$628 5 – –
JWA
830
JFS Wealth Advisors
Pennsylvania
$628 5 +2 +67%
DF
831
Dunhill Financial
United Kingdom
$627 4 -6 -60%
RAM
832
Riggs Asset Management
Pennsylvania
$503 4 +4 New
SC
833
Stephens Consulting
Michigan
$503 4 +4 New
DF
834
DecisionPoint Financial
Arizona
$391 3 +3 New
CT
835
Colonial Trust
South Carolina
$377 3 -2 -40%
WA
836
WPG Advisers
Maryland
$377 3 – –
DPW
837
DiNuzzo Private Wealth
Pennsylvania
$252 2 -30 -94%
HIA
838
HFM Investment Advisors
New Jersey
$251 2 +1 +100%
CW
839
Curio Wealth
Maryland
$251 2 +1 +100%
AA
840
Ancora Advisors
Ohio
$251 2 +2 New
VWA
841
Valued Wealth Advisors
Utah
$126 1 – –
RJA
842
Ross\Johnson & Associates
Minnesota
$126 1 – –
TFM
843
TFC Financial Management
Massachusetts
$126 1 +1 New
CFD
844
Creative Financial Designs
Indiana
$126 1 +1 New
BHWM
845
Bay Harbor Wealth Management
Maryland
$125 1 +1 New
WOC
846
West Oak Capital
California
$57 45 – –
Voloridge Investment Management
847
Voloridge Investment Management
Florida
– – -134,489 Closed
CCM
848
Cutter Capital Management
New York
– – -113,500 Closed
TC
849
TwinBeech Capital
New York
– – -64,253 Closed
WorldQuant Millennium Advisors
850
WorldQuant Millennium Advisors
New York
– – -57,013 Closed
32 33
34
35 36