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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 %
PA
226
Profund Advisors
Maryland
$3.66M -$254K -1,859 -6%
Wolverine Trading
227
Wolverine Trading
Illinois
$3.64M -$4.56M -32,929 -56%
Creative Planning
228
Creative Planning
Kansas
$3.64M +$277K +2,026 +8%
US Bancorp
229
US Bancorp
Minnesota
$3.55M +$923K +6,743 +35%
PNC Financial Services Group
230
PNC Financial Services Group
Pennsylvania
$3.45M +$2.87K +21 +0.1%
FC
231
FORA Capital
Florida
$3.42M +$753K +5,505 +28%
HT
232
Headlands Technologies
Illinois
$3.39M -$494K -3,608 -13%
FAF
233
Fjarde Ap-fonden
Sweden
$3.31M -$766K -5,600 -19%
URS
234
Utah Retirement Systems
Utah
$3.3M – – –
Mariner
235
Mariner
Kansas
$3.29M +$690K +5,039 +27%
IMPI
236
Ilmarinen Mutual Pension Insurance
Finland
$3.28M – – –
SC
237
Savant Capital
Illinois
$3.26M +$2.68M +19,619 +469%
JG
238
Jain Global
New York
$3.2M +$3.2M +23,376 New
FRAF
239
Första AP-fonden
Sweden
$3.15M -$2.5M -18,300 -44%
SFM
240
Sphera Funds Management
Israel
$3.11M – – –
YCM
241
Yousif Capital Management
Michigan
$3.11M -$46.9K -343 -1%
NIM
242
NEOS Investment Management
Connecticut
$3.11M +$694K +5,074 +29%
BF
243
BOK Financial
Oklahoma
$3.1M +$248K +1,810 +9%
CAMG
244
CWA Asset Management Group
Florida
$3.07M +$3.07M +22,468 New
NYLIM
245
New York Life Investment Management
New York
$3.05M -$25.9K -189 -0.8%
Comerica Bank
246
Comerica Bank
Texas
$3.02M -$1.59M -11,623 -34%
VPIM
247
Vanguard Personalized Indexing Management
California
$2.97M +$6.02K +44 +0.2%
MASUI
248
MIRAE ASSET SECURITIES (USA) INC.
New York
$2.94M -$2.55M -18,650 -47%
PFSRSONJ
249
Police & Firemen's Retirement System of New Jersey
New Jersey
$2.89M – – –
X
250
Xponance
Pennsylvania
$2.89M +$49.7K +363 +2%
8 9
10
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