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Biogen
BIIB

Overview Fund Activity

846 hedge funds and large institutions have $16.1B invested in Biogen in 2025 Q2 according to their latest regulatory filings, with 94 funds opening new positions, 336 increasing their positions, 257 reducing their positions, and 99 closing their positions.

Holders
846
Holders Change
-22
Holders Change %
-2.53%
% of All Funds
11.36%
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
336
Reduced
257
Closed
99
Calls
$292M
Puts
$203M
Net Calls
+$88.9M
Net Calls Change
+$365M

Top Buyers

1
Point72 Asset Management
1
Point72 Asset Management
Connecticut
$481M
2
Norges Bank
2
Norges Bank
Norway
$284M
3
Alyeska Investment Group
3
Alyeska Investment Group
Illinois
$63.9M
4
Arrowstreet Capital
4
Arrowstreet Capital
Massachusetts
$78.4M
5
Fidelity Investments
5
Fidelity Investments
Massachusetts
$210M

Top Sellers

1
BlackRock
1
BlackRock
New York
$1.7B
2
T. Rowe Price Investment Management
2
T. Rowe Price Investment Management
Maryland
$175M
3
Amundi
3
Amundi
France
$77.2M
4
SG Americas Securities
4
SG Americas Securities
New York
$2.82M
5
Qube Research & Technologies (QRT)
5
Qube Research & Technologies (QRT)
United Kingdom
$93.4M
Name Market Value Shares Shares
Change 		Shares
Change %
HFS
776
Hughes Financial Services
Virginia
$3.75K 29 +13 +81%
TVWM
777
Tower View Wealth Management
Wisconsin
$3.64K 29 – –
BSB
778
Bangor Savings Bank
Maine
$3.52K 28 – –
BA
779
Bellwether Advisors
Nebraska
$3.27K 26 -2 -7%
BCWM
780
Bartlett & Co Wealth Management
Ohio
$3.14K 25 -1 -4%
CWM
781
Consultiva Wealth Management
Puerto Rico
$3.14K 25 – –
RBC
782
Roble Belko & Company
Pennsylvania
$3K 25 – –
OP
783
ORG Partners
Indiana
$2.99K 23 +23 New
CIAS
784
CBIZ Investment Advisory Services
Ohio
$2.89K 23 +16 +229%
AWM
785
Abound Wealth Management
Tennessee
$2.76K 22 +4 +22%
CLOS
786
Compagnie Lombard Odier SCmA
Switzerland
$2.51K 20 – –
FUBT
787
First United Bank & Trust
Maryland
$2.51K 20 – –
ITIM
788
Indiana Trust & Investment Management
Indiana
$2.51K 20 – –
FFO
789
Fortitude Family Office
Arizona
$2.51K 20 +20 New
KG
790
Kilter Group
New York
$2.51K 20 +20 New
CTA
791
Colonial Trust Advisors
South Carolina
$2.51K 20 +20 New
CCM
792
Chilton Capital Management
Texas
$2.51K 20 +20 New
AG
793
AmeriFlex Group
Nevada
$2.29K 18 – –
PMFA
794
Plante Moran Financial Advisors
Michigan
$2.14K 17 – –
DWM
795
Darwin Wealth Management
Florida
$2.01K 16 – –
WAS
796
Winch Advisory Services
Wisconsin
$2.01K 16 – –
FMP
797
Financial Management Professionals
Texas
$2.01K 16 +16 New
GC
798
GFG Capital
Florida
$2.01K 16 +16 New
FGA
799
Fortis Group Advisors
New Jersey
$1.88K 15 – –
AWM
800
Accredited Wealth Management
Kentucky
$1.88K 15 – –
30 31
32
33 34