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Alnylam Pharmaceuticals

650 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, 214 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:

3.44% more ownership

Funds ownership: 97.86%101.3% (+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
650
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
501
$192K
502
$192K
503
$185K
504
$169K
505
$162K
506
$160K
507
$159K
508
$157K
509
$148K
510
$143K
511
$128K
512
$126K
513
$126K
514
$124K
515
$123K
516
$115K
517
$112K
518
$111K
519
$111K
520
$106K
521
$81.5K
522
$81.5K
523
$77.6K
524
$72.4K
525
$66.8K