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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 %
MA
901
MJP Associates
Connecticut
– -$359K -2,347 Closed
CB
902
Cadence Bank
Mississippi
– -$349K -2,281 Closed
VEA
903
Virtus ETF Advisers
New York
– -$344K -2,251 Closed
CG
904
Caprock Group
Idaho
– -$307K -2,007 Closed
SGAM
905
Smith Group Asset Management
Texas
– -$306K -2,000 Closed
PAG
906
Poinciana Advisors Group
Florida
– -$295K -1,931 Closed
VIM
907
Vinva Investment Management
Australia
– -$281K -1,874 Closed
CC
908
Centiva Capital
New York
– -$284K -1,858 Closed
CSP
909
Cary Street Partners
Virginia
– -$266K -1,742 Closed
GCM
910
Greenland Capital Management
New York
– -$265K -1,730 Closed
WANY
911
Wealthspire Advisors (New York)
New York
– -$262K -1,712 Closed
AWS
912
Atria Wealth Solutions
New York
– -$248K -1,620 Closed
BFG
913
Bleakley Financial Group
New Jersey
– -$246K -1,608 Closed
ClearBridge Investments
914
ClearBridge Investments
New York
– -$242K -1,584 Closed
BAM
915
Berkshire Asset Management
Pennsylvania
– -$229K -1,568 Closed
CFG
916
Citizens Financial Group
Rhode Island
– -$236K -1,545 Closed
BPA
917
Beacon Pointe Advisors
California
– -$235K -1,537 Closed
SIA
918
Sovereign Investment Advisors
Arizona
– -$232K -1,520 Closed
KWA
919
Kingswood Wealth Advisors
California
– -$231K -1,509 Closed
BDWCC
920
B&D White Capital Company
Texas
– -$229K -1,500 Closed
CI
921
Cigna Investments
Connecticut
– -$228K -1,494 Closed
WWM
922
Western Wealth Management
Colorado
– -$227K -1,484 Closed
KI
923
Kapitalo Investimentos
Brazil
– -$225K -1,472 Closed
IA
924
IFG Advisory
Georgia
– -$225K -1,471 Closed
MFGM
925
Marshall Financial Group (Maryland)
Maryland
– -$224K -1,468 Closed
35 36
37
38 39