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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
551
$12.7K
552
$12.7K
553
$11.1K
554
$10.8K
555
$10.3K
556
$9.99K
557
$9.99K
558
$9.72K
559
$9.45K
560
$9.45K
561
$9.2K
562
$8.23K
563
$7.64K
564
$7.29K
565
$7.02K
566
$6.75K
567
$5.67K
568
$5.42K
569
$5.13K
570
$4.59K
571
$4.59K
572
$4.32K
573
$4.05K
574
$4.05K
575
$4K