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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
426
$408K
427
$406K
428
$406K
429
$403K
430
$400K
431
$400K
432
$392K
433
$380K
434
$377K
435
$374K
436
$370K
437
$370K
438
$367K
439
$366K
440
$366K
441
$364K
442
$362K
443
$359K
444
$359K
445
$358K
446
$358K
447
$353K
448
$350K
449
$349K
450
$340K