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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 %
MAM
751
Meeder Asset Management
Ohio
$6.28K 50 +12 +32%
MSWA
752
Marshall & Sterling Wealth Advisors
New York
$6.15K 49 +1 +2%
TIM
753
Tortoise Investment Management
New York
$6.15K 49 +9 +23%
PWMG
754
Private Wealth Management Group
New Jersey
$5.9K 47 -60 -56%
AWM
755
Activest Wealth Management
Florida
$5.4K 43 +43 New
ME
756
McIlrath & Eck
Washington
$5.36K 43 – –
PWA
757
Physician Wealth Advisors
Utah
$5.28K 42 -2 -5%
Bank Julius Baer & Co
758
Bank Julius Baer & Co
Switzerland
$5.03K 40 +5 +14%
CFB
759
Cullen/Frost Bankers
Texas
$5.02K 40 – –
EFMH
760
E Fund Management (HK)
Hong Kong
$5.02K 40 – –
AIM
761
Anchor Investment Management
South Carolina
$5.02K 40 – –
HWM
762
Hemington Wealth Management
Virginia
$5K 45 -25 -36%
WTFG
763
Wood Tarver Financial Group
Idaho
$5K 44 – –
JFGIW
764
Johnson Financial Group Inc (Wisconsin)
Wisconsin
$4.9K 39 – –
PWMG
765
Prestige Wealth Management Group
New Jersey
$4.77K 38 +3 +9%
WB
766
Webster Bank
Connecticut
$4.52K 36 – –
MHR
767
Matthew Hamilton Rosenberg
$4.4K 35 – –
HNW
768
High Note Wealth
Minnesota
$4.4K 35 – –
CSC
769
Caldwell Sutter Capital
California
$4.27K 34 – –
WA
770
Whipplewood Advisors
Colorado
$4.02K 32 +4 +14%
PB
771
Pinnacle Bancorp
Nebraska
$4.02K 32 +9 +39%
HHMI
772
Howard Hughes Medical Institute
Maryland
$3.89K 31 +31 New
EWP
773
Elevation Wealth Partners
California
$3.77K 30 – –
BC
774
Barrett & Company
Rhode Island
$3.77K 30 – –
DJSG
775
D.J. St. Germain
Massachusetts
$3.77K 30 +30 New
29 30
31
32 33