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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.

Holders
850
Holders Change
-18
Holders Change %
-2.07%
% of All Funds
11.41%
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
1
Point72 Asset Management
Connecticut
$481M
2
Alyeska Investment Group
2
Alyeska Investment Group
Illinois
$63.9M
3
Arrowstreet Capital
3
Arrowstreet Capital
Massachusetts
$78.4M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$210M
5
A
5
AustralianSuper
Australia
$92.9M

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 Holding Trade Value Shares
Change 		Shares
Change %
Envestnet Asset Management
151
Envestnet Asset Management
Illinois
$7.04M +$475K +3,782 +7%
CSS
152
Cubist Systematic Strategies
Connecticut
$7.02M -$10.7M -84,962 -60%
Creative Planning
153
Creative Planning
Kansas
$6.96M +$3.62M +28,835 +109%
Macquarie Group
154
Macquarie Group
Australia
$6.95M -$475K -3,780 -6%
SC
155
SummitTX Capital
Texas
$6.9M +$5.44M +43,288 +371%
Nomura Asset Management
156
Nomura Asset Management
Japan
$6.82M +$69.7K +555 +1%
QCM
157
Quantinno Capital Management
New York
$6.8M +$4.7M +37,440 +224%
Raymond James Financial
158
Raymond James Financial
Florida
$6.53M +$1.26M +10,034 +24%
Nisa Investment Advisors
159
Nisa Investment Advisors
Missouri
$6.39M -$12.8M -102,315 -67%
SGA
160
Sector Gamma AS
Norway
$6.36M +$4.02M +32,000 +172%
O
161
Ossiam
France
$6.34M -$213K -1,694 -3%
RAM
162
Resona Asset Management
Japan
$6.24M +$366K +2,915 +6%
State of New Jersey Common Pension Fund D
163
State of New Jersey Common Pension Fund D
New Jersey
$6.06M -$16.5K -131 -0.3%
LF
164
Lansforsakringar Fondforvaltning
Sweden
$6M -$48.4K -385 -0.8%
EAM
165
Erste Asset Management
Austria
$5.88M -$546K -4,333 -9%
Cerity Partners
166
Cerity Partners
New York
$5.85M +$777K +6,184 +15%
OCBCO
167
Oversea-Chinese Banking Corp (OCBC)
Singapore
$5.77M -$917K -7,300 -14%
Ohio Public Employees Retirement System (OPERS)
168
Ohio Public Employees Retirement System (OPERS)
Ohio
$5.7M +$61.8K +492 +1%
CIBC Asset Management
169
CIBC Asset Management
Ontario, Canada
$5.66M -$273K -2,171 -5%
NAM
170
Nissay Asset Management
Japan
$5.63M -$300K -2,386 -5%
Los Angeles Capital Management
171
Los Angeles Capital Management
California
$5.57M +$132K +1,048 +2%
ASRS
172
Arizona State Retirement System
Arizona
$5.37M +$80.3K +639 +2%
HCM
173
Hillman Capital Management
Maryland
$5.27M -$258K -2,053 -5%
GAM
174
Generali Asset Management
Italy
$5.23M +$316K +2,518 +6%
GC
175
Grimes & Company
Massachusetts
$5.15M -$2.3M -18,310 -31%
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