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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
251
$2.45M
252
$2.43M
253
$2.42M
254
$2.39M
255
$2.38M
256
$2.37M
257
$2.37M
258
$2.35M
259
$2.33M
260
$2.29M
261
$2.27M
262
$2.2M
263
$2.19M
264
$2.16M
265
$2.15M
266
$2.12M
267
$2.1M
268
$1.99M
269
$1.97M
270
$1.91M
271
$1.91M
272
$1.91M
273
$1.81M
274
$1.79M
275
$1.77M