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Alnylam Pharmaceuticals

653 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, 262 increasing their positions, 217 reducing their positions, and 63 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:

1.8% more ownership

Funds ownership: 99.53%101.33% (+1.8%)

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
653
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
$5.54K
602
$5.22K
603
$5.14K
604
$4.89K
605
$4.89K
606
$4.6K
607
$4.57K
608
$4.24K
609
$3.91K
610
$3.53K
611
$3.4K
612
$3.26K
613
$3.26K
614
$3.26K
615
$3K
616
$3K
617
$2.94K
618
$2.65K
619
$2.61K
620
$2.61K
621
$2.61K
622
$2.28K
623
$2.28K
624
$2.28K
625
$1.96K