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Alkermes

362 hedge funds and large institutions have $5.05B invested in Alkermes in 2025 Q4 according to their latest regulatory filings, with 57 funds opening new positions, 143 increasing their positions, 123 reducing their positions, and 45 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more ownership

Funds ownership:

more funds holding

Funds holding:

1% less capital invested

Capital invested by funds: $5.08B → $5.05B (-$35.1M)

67% less funds holding in top 10

Funds holding in top 10: 31 (-2)

74% less call options, than puts

Call options by funds: $5.84M | Put options by funds: $22.4M

Holders
362
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$5.84M
Puts
$22.4M
Net Calls
Net Calls Change

Top Buyers

1 +$79.2M
2 +$59.9M
3 +$57.5M
4
UBS Group
UBS Group
Switzerland
+$53.6M
5
American Century Companies
American Century Companies
Missouri
+$46.7M

Top Sellers

1 -$74.1M
2 -$51.6M
3 -$37.1M
4
ACA
Avoro Capital Advisors
New York
-$25.2M
5
Artisan Partners
Artisan Partners
Wisconsin
-$22.8M
Name Holding Trade Value Shares
Change
Change in
Stake
California State Teachers Retirement System (CalSTRS)
101
California State Teachers Retirement System (CalSTRS)
California
$4.16M
Janus Henderson Group
102
Janus Henderson Group
United Kingdom
$4.08M
TAM
103
TFG Asset Management
Cayman Islands
$3.95M
RSCM
104
Rock Springs Capital Management
Maryland
$3.9M
AA
105
ALPS Advisors
Colorado
$3.79M
Deutsche Bank
106
Deutsche Bank
Germany
$3.76M
RPAM
107
Rhenman & Partners Asset Management
Sweden
$3.73M
State Board of Administration of Florida Retirement System
108
State Board of Administration of Florida Retirement System
Florida
$3.68M
DCM
109
DAFNA Capital Management
California
$3.64M
Marshall Wace
110
Marshall Wace
United Kingdom
$3.63M
Focus Partners Wealth
111
Focus Partners Wealth
Massachusetts
$3.47M
Thrivent Financial for Lutherans
112
Thrivent Financial for Lutherans
Minnesota
$3.26M
Manulife (Manufacturers Life Insurance)
113
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$3.18M
Assenagon Asset Management
114
Assenagon Asset Management
Luxembourg
$3.09M
KAM
115
Krensavage Asset Management
New York
$3.02M
HSA
116
Hussman Strategic Advisors
Maryland
$2.94M
SCM
117
Sio Capital Management
New York
$2.67M
Los Angeles Capital Management
118
Los Angeles Capital Management
California
$2.66M
DMKJ
119
David M. Knott Jr
$2.66M
Mackenzie Financial
120
Mackenzie Financial
Ontario, Canada
$2.65M
State of Wisconsin Investment Board
121
State of Wisconsin Investment Board
Wisconsin
$2.61M
SOADOR
122
State of Alaska Department of Revenue
Alaska
$2.6M
IMRF
123
Illinois Municipal Retirement Fund
Illinois
$2.56M
OSAM
124
O'Shaughnessy Asset Management
Connecticut
$2.53M
Mirae Asset Global ETFs Holdings
125
Mirae Asset Global ETFs Holdings
Hong Kong
$2.44M