BIIB icon

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 %
HHMI
776
Howard Hughes Medical Institute
Maryland
$3.89K +$3.89K +31 New
BC
777
Barrett & Company
Rhode Island
$3.77K – – –
EWP
778
Elevation Wealth Partners
California
$3.77K – – –
DJSG
779
D.J. St. Germain
Massachusetts
$3.77K +$3.77K +30 New
HFS
780
Hughes Financial Services
Virginia
$3.75K +$1.68K +13 +81%
TVWM
781
Tower View Wealth Management
Wisconsin
$3.64K – – –
BSB
782
Bangor Savings Bank
Maine
$3.52K – – –
BA
783
Bellwether Advisors
Nebraska
$3.27K -$251 -2 -7%
BCWM
784
Bartlett & Co Wealth Management
Ohio
$3.14K -$126 -1 -4%
CWM
785
Consultiva Wealth Management
Puerto Rico
$3.14K – – –
RBC
786
Roble Belko & Company
Pennsylvania
$3K – – –
OP
787
ORG Partners
Indiana
$2.99K +$2.99K +23 New
CIAS
788
CBIZ Investment Advisory Services
Ohio
$2.89K +$2.01K +16 +229%
AWM
789
Abound Wealth Management
Tennessee
$2.76K +$502 +4 +22%
ITIM
790
Indiana Trust & Investment Management
Indiana
$2.51K – – –
CLOS
791
Compagnie Lombard Odier SCmA
Switzerland
$2.51K – – –
FUBT
792
First United Bank & Trust
Maryland
$2.51K – – –
FFO
793
Fortitude Family Office
Arizona
$2.51K +$2.51K +20 New
KG
794
Kilter Group
New York
$2.51K +$2.51K +20 New
CCM
795
Chilton Capital Management
Texas
$2.51K +$2.51K +20 New
CTA
796
Colonial Trust Advisors
South Carolina
$2.51K +$2.51K +20 New
AG
797
AmeriFlex Group
Nevada
$2.29K – – –
PMFA
798
Plante Moran Financial Advisors
Michigan
$2.14K – – –
WAS
799
Winch Advisory Services
Wisconsin
$2.01K – – –
DWM
800
Darwin Wealth Management
Florida
$2.01K – – –
30 31
32
33 34