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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
476
$223K
477
$218K
478
$216K
479
$215K
480
$213K
481
$213K
482
$209K
483
$208K
484
$204K
485
$203K
486
$202K
487
$202K
488
$179K
489
$174K
490
$167K
491
$166K
492
$161K
493
$150K
494
$148K
495
$142K
496
$136K
497
$135K
498
$124K
499
$123K
500
$121K