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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 %
NAM
201
NorthCrest Asset Manangement
Minnesota
$4.73M +$291K +2,126 +7%
KBC Group
202
KBC Group
Belgium
$4.7M +$116K +850 +3%
NGM
203
North Growth Management
British Columbia, Canada
$4.65M +$2.19M +16,000 +89%
SO
204
STRS Ohio
Ohio
$4.65M – – –
II
205
IFM Investors
Australia
$4.62M +$41.6K +304 +0.9%
CNB
206
Czech National Bank
Czech Republic
$4.6M +$277K +2,025 +6%
COPPSERS
207
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$4.58M +$341K +2,490 +8%
KMC
208
Kirr Marbach & Co
Indiana
$4.58M +$499K +3,646 +12%
MIH
209
Meitav Investment House
Israel
$4.57M -$9.5M -69,438 -68%
CUAMC
210
China Universal Asset Management Company
China
$4.52M -$40.2K -294 -0.9%
OIC
211
Orion Investment Company
Missouri
$4.33M -$9.44K -69 -0.2%
UIM
212
USS Investment Management
United Kingdom
$4.31M – – –
PEAK6
213
PEAK6
Illinois
$4.19M +$2.99M +21,871 +250%
N
214
Natixis
France
$4.08M +$206K +1,513 +5%
Corient Private Wealth
215
Corient Private Wealth
Florida
$4.08M +$55.7K +407 +1%
AB
216
Amalgamated Bank
New York
$3.89M +$34.6K +253 +0.9%
IPAM
217
ICICI Prudential Asset Management
India
$3.86M -$2.74K -20 -0.1%
Carson Wealth (CWM LLC)
218
Carson Wealth (CWM LLC)
Nebraska
$3.85M +$1.7M +12,418 +79%
BCIM
219
British Columbia Investment Management
British Columbia, Canada
$3.81M -$2.05K -15 -0.1%
CA
220
CSM Advisors
Pennsylvania
$3.81M -$41.1K -300 -1%
AP
221
Arlington Partners
Alabama
$3.79M +$3.79M +27,725 New
Commonwealth Equity Services
222
Commonwealth Equity Services
Massachusetts
$3.76M +$163K +1,188 +5%
GIC
223
Generali Investments CEE
Czech Republic
$3.7M – – –
Natixis Advisors
224
Natixis Advisors
Massachusetts
$3.68M +$1.36M +9,946 +59%
DnB Asset Management
225
DnB Asset Management
Norway
$3.67M -$2.82M -20,616 -43%
7 8
9
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