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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
351
$832K
352
$819K
353
$819K
354
$802K
355
$785K
356
$783K
357
$778K
358
$754K
359
$743K
360
$740K
361
$739K
362
$737K
363
$736K
364
$736K
365
$720K
366
$716K
367
$675K
368
$665K
369
$655K
370
$640K
371
$638K
372
$634K
373
$620K
374
$615K
375
$605K