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Alnylam Pharmaceuticals

618 hedge funds and large institutions have $34.2B invested in Alnylam Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 107 funds opening new positions, 238 increasing their positions, 197 reducing their positions, and 67 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
618
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$274M
Puts
$238M
Net Calls
Net Calls Change

Top Sellers

1 -$428M
2 -$334M
3 -$103M
4
BlackRock
BlackRock
New York
-$88M
5
Corient Private Wealth
Corient Private Wealth
Florida
-$63.7M
Name Holding Trade Value Shares
Change
Change in
Stake
151
$10.1M
152
$9.53M
153
$9.44M
154
$9.37M
155
$9.35M
156
$9.32M
157
$8.83M
158
$8.53M
159
$8.47M
160
$8.36M
161
$7.78M
162
$7.72M
163
$7.46M
164
$7.37M
165
$7.27M
166
$7.15M
167
$7.12M
168
$6.97M
169
$6.86M
170
$6.71M
171
$6.67M
172
$6.66M
173
$6.44M
174
$6.42M
175
$6.36M