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Alnylam Pharmaceuticals

821 hedge funds and large institutions have $59.2B invested in Alnylam Pharmaceuticals in 2025 Q3 according to their latest regulatory filings, with 224 funds opening new positions, 282 increasing their positions, 223 reducing their positions, and 49 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

26% more funds holding

Funds holding: 653821 (+168)

2.24% less ownership

Funds ownership: 101.33%99.09% (-2.2%)

13% less call options, than puts

Call options by funds: $562M | Put options by funds: $649M

Holders
821
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
13
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$562M
Puts
$649M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
551
$376K
552
$375K
553
$375K
554
$368K
555
$368K
556
$365K
557
$363K
558
$363K
559
$362K
560
$360K
561
$354K
562
$353K
563
$353K
564
$353K
565
$348K
566
$345K
567
$343K
568
$342K
569
$338K
570
$333K
571
$332K
572
$331K
573
$325K
574
$324K
575
$322K