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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
276
$1.77M
277
$1.76M
278
$1.75M
279
$1.75M
280
$1.74M
281
$1.73M
282
$1.72M
283
$1.71M
284
$1.7M
285
$1.69M
286
$1.68M
287
$1.67M
288
$1.67M
289
$1.66M
290
$1.65M
291
$1.63M
292
$1.63M
293
$1.59M
294
$1.59M
295
$1.58M
296
$1.58M
297
$1.58M
298
$1.57M
299
$1.54M
300
$1.53M