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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
301
$1.5M
302
$1.46M
303
$1.46M
304
$1.45M
305
$1.44M
306
$1.43M
307
$1.41M
308
$1.39M
309
$1.37M
310
$1.27M
311
$1.27M
312
$1.24M
313
$1.23M
314
$1.22M
315
$1.22M
316
$1.17M
317
$1.14M
318
$1.14M
319
$1.14M
320
$1.14M
321
$1.13M
322
$1.09M
323
$1.08M
324
$1.08M
325
$1.08M