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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
226
$3.53M
227
$3.5M
228
$3.49M
229
$3.48M
230
$3.43M
231
$3.38M
232
$3.34M
233
$3.22M
234
$3.21M
235
$2.99M
236
$2.94M
237
$2.91M
238
$2.89M
239
$2.88M
240
$2.87M
241
$2.72M
242
$2.71M
243
$2.71M
244
$2.66M
245
$2.65M
246
$2.65M
247
$2.56M
248
$2.55M
249
$2.53M
250
$2.48M