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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 %
CT
726
Clearstead Trust
Maine
$10.3K 82 +55 +204%
RWM
727
RMG Wealth Management
Wisconsin
$10.1K 80 +80 New
ATC
728
Adirondack Trust Company
New York
$10K 80 – –
CA
729
Centerpoint Advisors
Massachusetts
$10K 83 – –
GWM
730
Geneos Wealth Management
Colorado
$9.92K 79 -113 -59%
MHIP
731
Mountain Hill Investment Partners
New Jersey
$9.42K 75 – –
IBOK
732
Independence Bank of Kentucky
Kentucky
$9.42K 75 – –
CTC
733
Cetera Trust Company
Minnesota
$9.42K 75 – –
SC
734
Steph & Co
Wisconsin
$9.42K 75 – –
ADL
735
Asset Dedication LLC
California
$9.29K 74 -30 -29%
HIA
736
Harbor Investment Advisory
Maryland
$9.29K 74 +56 +311%
TPWA
737
Twin Peaks Wealth Advisors
California
$9.03K 70 +70 New
AW
738
Avion Wealth
Texas
$9K 74 +53 +252%
S
739
Sachetta
Massachusetts
$8.79K 70 +42 +150%
TC
740
Truvestments Capital
Florida
$8.57K 68 – –
KIM
741
Kestra Investment Management
Texas
$8.49K 62 – –
FCT
742
First Community Trust
Iowa
$8.16K 65 – –
FFWM
743
Future Financial Wealth Management
Ohio
$8.16K 65 – –
PWAM
744
Private Wealth Asset Management
Iowa
$7.91K 63 – –
MA
745
Montag & Associates
Georgia
$7.54K 60 -149 -71%
CPG
746
Cornerstone Planning Group
New Jersey
$6.91K 52 +38 +271%
GBT
747
Grove Bank & Trust
Florida
$6.41K 51 -393 -89%
FFL
748
Financial Freedom LLC
Ohio
$6.28K 50 – –
TCM
749
Tradewinds Capital Management
Washington
$6.28K 50 – –
MEG
750
Millstone Evans Group
Colorado
$6.28K 50 – –
28 29
30
31 32