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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 %
SCB
926
Saudi Central Bank
Saudi Arabia
– – -57 Closed
SIM
927
Synergy Investment Management
Florida
– – -50 Closed
AFS
928
Anderson Financial Strategies
Ohio
– – -40 Closed
DWS
929
Dynamic Wealth Strategies
California
– – -33 Closed
BCMLT
930
Beacon Capital Management LLC (Tennessee)
Tennessee
– – -20 Closed
MDA
931
Minot DeBlois Advisors
Massachusetts
– – -20 Closed
HCP
932
Hexagon Capital Partners
Arkansas
– – -19 Closed
CWM
933
CarsonAllaria Wealth Management
Illinois
– – -15 Closed
SFG
934
Stonebridge Financial Group
Pennsylvania
– – -11 Closed
HC
935
Hurley Capital
New York
– – -10 Closed
BGC
936
Beutel, Goodman & Co
Ontario, Canada
– – -10 Closed
GFPC
937
Global Financial Private Client
Florida
– – -8 Closed
SWA
938
SOA Wealth Advisors
New York
– – -6 Closed
DFA
939
DHJJ Financial Advisors
Illinois
– – -6 Closed
WW
940
Winnow Wealth
Texas
– – -4 Closed
NWM
941
Nova Wealth Management
Florida
– – -3 Closed
GC
942
Gould Capital
Washington
– – -3 Closed
MAS
943
MPWM Advisory Solutions
Georgia
– – -2 Closed
MFA
944
McClarren Financial Advisors
Pennsylvania
– – -2 Closed
BLC
945
Brown, Lisle/Cummings
Rhode Island
– – -1 Closed
UOC
946
UBS O'Connor
Illinois
– – – –
HT
947
HAP Trading
New York
– – – –
IMC Chicago
948
IMC Chicago
Illinois
– – – –
Twin Tree Management
949
Twin Tree Management
Texas
– – – –
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