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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 %
RBC
801
Roble Belko & Company
Pennsylvania
$3K – – –
AW
802
Avion Wealth
Texas
$3K – – –
CLOS
803
Compagnie Lombard Odier SCmA
Switzerland
$2.74K -$54.7K -400 -95%
ITIM
804
Indiana Trust & Investment Management
Indiana
$2.74K -$3.42K -25 -56%
MDA
805
Minot DeBlois Advisors
Massachusetts
$2.74K -$1.64K -12 -38%
FUBT
806
First United Bank & Trust
Maryland
$2.74K – – –
BCMLT
807
Beacon Capital Management LLC (Tennessee)
Tennessee
$2.74K +$2.74K +20 New
HCP
808
Hexagon Capital Partners
Arkansas
$2.6K -$2.46K -18 -49%
AWM
809
Abound Wealth Management
Tennessee
$2.46K -$411 -3 -14%
AG
810
AmeriFlex Group
Nevada
$2.46K – – –
HIA
811
Harbor Investment Advisory
Maryland
$2.46K – – –
DWM
812
Darwin Wealth Management
Florida
$2.45K – – –
PMFA
813
Plante Moran Financial Advisors
Michigan
$2.33K – – –
WWM
814
Wolff Wiese Magana
California
$2.19K – – –
RWM
815
Rialto Wealth Management
New York
$2.19K +$2.19K +16 New
WAS
816
Winch Advisory Services
Wisconsin
$2.19K – – –
HFS
817
Hughes Financial Services
Virginia
$2.11K +$2.11K +16 New
AF
818
Advisornet Financial
Minnesota
$2.05K -$6.43K -47 -76%
AWM
819
Accredited Wealth Management
Kentucky
$2.05K – – –
CWM
820
CarsonAllaria Wealth Management
Illinois
$2.05K – – –
FGA
821
Fortis Group Advisors
New Jersey
$2.05K – – –
NECFA
822
New England Capital Financial Advisors
Connecticut
$1.78K -$6.84K -50 -79%
RTL
823
Red Tortoise LLC
Georgia
$1.78K -$4.79K -35 -73%
HCM
824
Hollencrest Capital Management
California
$1.78K – – –
NL
825
NVWM LLC
Pennsylvania
$1.78K +$1.23K +9 +225%
31 32
33
34 35