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Alnylam Pharmaceuticals

649 hedge funds and large institutions have $43.1B invested in Alnylam Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 96 funds opening new positions, 261 increasing their positions, 214 reducing their positions, and 62 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

3.44% more ownership

Funds ownership: 97.84%101.28% (+3.4%)

8% less call options, than puts

Call options by funds: $188M | Put options by funds: $203M

10% less funds holding in top 10

Funds holding in top 10: 109 (-1)

Holders
649
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
9
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$188M
Puts
$203M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
601
$4.89K
602
$4.6K
603
$4.57K
604
$4.24K
605
$3.91K
606
$3.53K
607
$3.4K
608
$3.26K
609
$3.26K
610
$3.26K
611
$3K
612
$3K
613
$2.94K
614
$2.65K
615
$2.61K
616
$2.61K
617
$2.61K
618
$2.28K
619
$2.28K
620
$2.28K
621
$1.96K
622
$1.96K
623
$1.96K
624
$1.9K
625
$1.86K