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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.

New
Increased
Maintained
Reduced
Closed
Holders
850
Holders Change
-18
Holders Change %
-2.07%
% of All Funds
11.4%
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
Point72 Asset Management
Connecticut
$481M
2
Alyeska Investment Group
Alyeska Investment Group
Illinois
$63.9M
3
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
$78.4M
4
Fidelity Investments
Fidelity Investments
Massachusetts
$210M
5
A
AustralianSuper
Australia
$92.9M

Top Sellers

1
BlackRock
BlackRock
New York
$1.7B
2
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
$175M
3
Amundi
Amundi
France
$77.2M
4
SG Americas Securities
SG Americas Securities
New York
$2.82M
5
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
$93.4M
Name Holding Trade Value Shares
Change 		Shares
Change %
Corient Private Wealth
201
Corient Private Wealth
Florida
$4.35M +$611K +4,862 +16%
NAM
202
NorthCrest Asset Manangement
Minnesota
$4.34M -$248K -1,863 -5%
NGM
203
North Growth Management
British Columbia, Canada
$4.27M – – –
Impax Asset Management Group
204
Impax Asset Management Group
United Kingdom
$4.21M -$291K -2,320 -6%
MIH
205
Meitav Investment House
Israel
$4.19M – – –
Jane Street
206
Jane Street
New York
$4.15M -$529K -4,213 -11%
EGM
207
Engineers Gate Manager
New York
$4.15M -$5.52M -43,950 -57%
OIC
208
Orion Investment Company
Missouri
$4.13M +$157K +1,249 +4%
CUAMC
209
China Universal Asset Management Company
China
$4.11M -$38.1K -303 -0.9%
UIM
210
USS Investment Management
United Kingdom
$4M +$46.7K +372 +1%
PP
211
PDT Partners
New York
$3.98M +$3.98M +31,664 New
Retirement Systems of Alabama
212
Retirement Systems of Alabama
Alabama
$3.95M -$19.1M -152,109 -83%
FTC
213
Farmers Trust Company
Ohio
$3.71M +$1.84M +14,666 +99%
Wealth Enhancement Advisory Services
214
Wealth Enhancement Advisory Services
Minnesota
$3.7M +$1.17M +8,818 +46%
CWM
215
CIBC World Markets
New York
$3.63M +$1.41M +11,252 +64%
Commonwealth Equity Services
216
Commonwealth Equity Services
Massachusetts
$3.59M +$135K +1,071 +4%
OSAM
217
O'Shaughnessy Asset Management
Connecticut
$3.56M +$3.24M +25,836 +1,043%
AB
218
Amalgamated Bank
New York
$3.55M -$19.3K -154 -0.5%
CA
219
CSM Advisors
Pennsylvania
$3.45M -$50.2K -400 -1%
DnB Asset Management
220
DnB Asset Management
Norway
$3.44M +$75.6K +602 +2%
FAF
221
Fjarde Ap-fonden
Sweden
$3.44M +$402K +3,200 +13%
PA
222
Profund Advisors
Maryland
$3.41M +$50.7K +404 +2%
CAMG
223
CWA Asset Management Group
Florida
$3.34M +$520K +4,143 +18%
MSV
224
MN Services Vermogensbeheer
Netherlands
$3.34M +$3.34M +26,600 New
GIM
225
Glenmede Investment Management
Pennsylvania
$3.31M +$3.31M +26,340 New
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