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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 %
Janus Henderson Group
251
Janus Henderson Group
United Kingdom
$2.88M +$147K +1,065 +5%
LOAMS
252
Lombard Odier Asset Management (Switzerland)
Switzerland
$2.88M +$2.88M +21,052 New
SCM
253
Shelton Capital Management
Colorado
$2.86M -$40K -292 -1%
Public Sector Pension Investment Board (PSP Investments)
254
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$2.75M +$239K +1,745 +10%
ONSWM
255
Old North State Wealth Management
North Carolina
$2.72M +$607K +4,437 +29%
TI
256
Tidal Investments
Wisconsin
$2.72M +$124K +905 +5%
SOADOR
257
State of Alaska Department of Revenue
Alaska
$2.7M +$73.9K +540 +3%
KA
258
Kintegral Advisory
New York
$2.65M -$9.03K -66 -0.3%
Stifel Financial
259
Stifel Financial
Missouri
$2.61M +$865K +6,320 +50%
Wealth Enhancement Advisory Services
260
Wealth Enhancement Advisory Services
Minnesota
$2.61M +$357K +2,606 +16%
RIM
261
Rakuten Investment Management
Japan
$2.59M +$2.59M +18,708 New
SGA
262
Sector Gamma AS
Norway
$2.55M -$1.42M -10,361 -36%
LSERS
263
Louisiana State Employees Retirement System
Louisiana
$2.55M +$27.4K +200 +1%
IGAM
264
iA Global Asset Management
Quebec, Canada
$2.51M +$361K +2,636 +17%
SEI Investments
265
SEI Investments
Pennsylvania
$2.51M -$1.97M -14,379 -44%
SMDAM
266
Sumitomo Mitsui DS Asset Management
Japan
$2.48M +$54.3K +397 +2%
TS
267
Triglav Skladi
Slovenia
$2.47M – – –
Janney Montgomery Scott
268
Janney Montgomery Scott
Pennsylvania
$2.46M +$769K +5,620 +46%
SF
269
Synovus Financial
Georgia
$2.45M +$407K +2,974 +20%
DGM
270
Delta Global Management
New York
$2.45M +$2.45M +17,872 New
LWL
271
Leo Wealth LLC
Texas
$2.44M +$534K +3,903 +28%
UM
272
UniSuper Management
Australia
$2.42M +$162K +1,186 +7%
CWM
273
CIBC World Markets
New York
$2.41M -$1.18M -8,614 -33%
Acadian Asset Management
274
Acadian Asset Management
Massachusetts
$2.4M +$1.96M +14,357 +449%
EMPI
275
Elo Mutual Pension Insurance
Finland
$2.4M +$193K +1,408 +9%
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