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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 %
PAI
76
Palo Alto Investors
California
$25.8M 205,759 +836 +0.4%
LGM
77
Logos Global Management
California
$25.1M 200,000 +200,000 New
Acadian Asset Management
78
Acadian Asset Management
Massachusetts
$25M 199,462 +181,905 +1,036%
Rafferty Asset Management
79
Rafferty Asset Management
New York
$22.7M 180,440 -335 -0.2%
KK
80
KLP Kapitalforvaltning
Norway
$20.9M 166,577 +10,500 +7%
Wells Fargo
81
Wells Fargo
California
$20.8M 165,962 +11,477 +7%
Marshall Wace
82
Marshall Wace
United Kingdom
$20.8M 165,955 +160,055 +2,713%
BNP Paribas Asset Management
83
BNP Paribas Asset Management
France
$20.6M 163,630 +11,037 +7%
GAM
84
Gotham Asset Management
New York
$20.5M 163,489 +64,261 +65%
CS
85
Candriam SCA
Luxembourg
$20.5M 163,315 -23,465 -13%
Principal Financial Group
86
Principal Financial Group
Iowa
$20.1M 159,761 -5,075 -3%
Aberdeen Group
87
Aberdeen Group
United Kingdom
$19.7M 156,755 +9,942 +7%
SCM
88
Suvretta Capital Management
New York
$19.1M 151,890 +31,154 +26%
Universal-Beteiligungs- und Servicegesellschaft
89
Universal-Beteiligungs- und Servicegesellschaft
Germany
$18.7M 149,128 -8,333 -5%
DZ Bank
90
DZ Bank
Germany
$18.5M 147,482 +14,591 +11%
National Bank of Canada
91
National Bank of Canada
Quebec, Canada
$18M 143,212 -58,321 -29%
TD Asset Management
92
TD Asset Management
Ontario, Canada
$18M 143,027 -141,349 -50%
New York State Common Retirement Fund
93
New York State Common Retirement Fund
New York
$17.6M 140,245 +9,099 +7%
Mirae Asset Global ETFs Holdings
94
Mirae Asset Global ETFs Holdings
Hong Kong
$17.6M 139,832 -4,761 -3%
State Board of Administration of Florida Retirement System
95
State Board of Administration of Florida Retirement System
Florida
$16.9M 134,847 +1,300 +1%
Canada Life
96
Canada Life
Manitoba, Canada
$16.5M 130,933 +5,426 +4%
ECM
97
ExodusPoint Capital Management
New York
$16.3M 129,491 +120,009 +1,266%
Ameriprise
98
Ameriprise
Minnesota
$15.8M 126,056 +23,505 +23%
Nordea Investment Management
99
Nordea Investment Management
Sweden
$15.8M 125,935 +6,811 +6%
Victory Capital Management
100
Victory Capital Management
Texas
$15.5M 123,432 -1,324 -1%
2 3
4
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