BIIB icon

Biogen
BIIB

Overview Fund Activity

868 hedge funds and large institutions have $17.4B invested in Biogen in 2025 Q1 according to their latest regulatory filings, with 127 funds opening new positions, 328 increasing their positions, 264 reducing their positions, and 105 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
868
Holders Change
+8
Holders Change %
+0.93%
% of All Funds
11.79%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.03%
New
127
Increased
328
Reduced
264
Closed
105
Calls
$345M
Puts
$621M
Net Calls
-$276M
Net Calls Change
-$229M

Top Buyers

1
AQR Capital Management
AQR Capital Management
Connecticut
$187M
2
Balyasny Asset Management
Balyasny Asset Management
Illinois
$108M
3
SG Americas Securities
SG Americas Securities
New York
$98.5M
4
Fidelity Investments
Fidelity Investments
Massachusetts
$179M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
$55.7M

Top Sellers

1
Pacer Advisors
Pacer Advisors
Pennsylvania
$185M
2
BGC
Beutel, Goodman & Co
Ontario, Canada
$1K
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
$158M
4
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
$200M
5
O
OrbiMed
New York
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
State of Tennessee, Department of Treasury
176
State of Tennessee, Department of Treasury
Tennessee
$6.09M +$3.58M +26,195 +143%
TI
177
Trexquant Investment
Connecticut
$6.09M +$2.89M +21,151 +91%
LPL Financial
178
LPL Financial
California
$6.06M +$2.49M +18,183 +70%
CF
179
Corebridge Financial
Texas
$6.06M -$169K -1,238 -3%
HCM
180
Hillman Capital Management
Maryland
$6.02M +$131K +959 +2%
Daiwa Securities Group
181
Daiwa Securities Group
Japan
$5.94M +$845K +6,172 +17%
Los Angeles Capital Management
182
Los Angeles Capital Management
California
$5.93M +$5.93M +43,310 New
Lido Advisors
183
Lido Advisors
California
$5.89M +$198K +1,447 +3%
ASRS
184
Arizona State Retirement System
Arizona
$5.76M +$184K +1,344 +3%
Raymond James Financial
185
Raymond James Financial
Florida
$5.74M -$13.7M -100,005 -70%
GIA
186
Gateway Investment Advisers
Ohio
$5.65M +$7.8K +57 +0.1%
Cerity Partners
187
Cerity Partners
New York
$5.52M +$2.5M +18,277 +83%
Credit Agricole
188
Credit Agricole
France
$5.52M +$528K +3,859 +11%
Teacher Retirement System of Texas
189
Teacher Retirement System of Texas
Texas
$5.46M -$1.68M -12,285 -24%
SOMRS
190
State of Michigan Retirement System
Michigan
$5.43M -$3.26M -23,800 -37%
GAM
191
Generali Asset Management
Italy
$5.36M +$3.14M +22,969 +142%
Ensign Peak Advisors
192
Ensign Peak Advisors
Utah
$5.22M +$2.25M +16,443 +76%
MIM
193
MetLife Investment Management
New Jersey
$5.2M -$76.9K -562 -1%
AGA
194
Altrinsic Global Advisors
Connecticut
$5.16M -$277K -2,026 -5%
Jane Street
195
Jane Street
New York
$5.1M -$22.6M -165,384 -82%
Calamos Advisors
196
Calamos Advisors
Illinois
$5.06M +$56.4K +412 +1%
Impax Asset Management Group
197
Impax Asset Management Group
United Kingdom
$4.91M -$121K -884 -2%
GFM
198
GF Fund Management
China
$4.85M +$163K +1,193 +3%
ACM
199
Aquatic Capital Management
Illinois
$4.82M -$4.07M -29,713 -46%
TCM
200
Tang Capital Management
California
$4.79M – – –
6 7
8
9 10