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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 %
JG
226
Jain Global
New York
$3.27M +$335K +2,670 +11%
FRAF
227
Första AP-fonden
Sweden
$3.04M +$151K +1,200 +5%
IMPI
228
Ilmarinen Mutual Pension Insurance
Finland
$3.01M – – –
URS
229
Utah Retirement Systems
Utah
$3.01M -$14.9K -119 -0.5%
Verition Fund Management
230
Verition Fund Management
Connecticut
$2.93M -$27.1M -215,639 -90%
MASUI
231
MIRAE ASSET SECURITIES (USA) INC.
New York
$2.9M +$202K +1,605 +7%
BCIM
232
British Columbia Investment Management
British Columbia, Canada
$2.89M -$608K -4,839 -17%
HT
233
Headlands Technologies
Illinois
$2.86M -$248K -1,978 -8%
SG Americas Securities
234
SG Americas Securities
New York
$2.82M -$87.6M -697,323 -97%
AAF
235
Andra AP-fonden
Sweden
$2.81M -$2.99M -23,800 -52%
PFSRSONJ
236
Police & Firemen's Retirement System of New Jersey
New Jersey
$2.81M +$157K +1,248 +6%
NYLIM
237
New York Life Investment Management
New York
$2.81M +$8.42K +67 +0.3%
SEI Investments
238
SEI Investments
Pennsylvania
$2.77M +$466K +3,713 +20%
TI
239
Tidal Investments
Wisconsin
$2.76M +$266K +2,120 +11%
IC
240
Ikarian Capital
Texas
$2.7M +$2.7M +21,516 New
BF
241
BOK Financial
Oklahoma
$2.69M -$157K -1,251 -6%
X
242
Xponance
Pennsylvania
$2.68M +$35.3K +281 +1%
IPAM
243
ICICI Prudential Asset Management
India
$2.67M -$872K -6,941 -25%
PFM
244
Privium Fund Management
Netherlands
$2.67M +$2.67M +20,500 New
Comerica Bank
245
Comerica Bank
Texas
$2.65M -$121K -964 -4%
SC
246
Savant Capital
Illinois
$2.57M -$421K -3,349 -14%
AP
247
Arlington Partners
Alabama
$2.56M -$918K -7,308 -26%
ONSWM
248
Old North State Wealth Management
North Carolina
$2.54M +$40.2K +320 +2%
YCM
249
Yousif Capital Management
Michigan
$2.48M -$371K -2,956 -13%
KA
250
Kintegral Advisory
New York
$2.43M -$3.64K -29 -0.1%
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