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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
426
$933K
427
$923K
428
$920K
429
$917K
430
$912K
431
$911K
432
$906K
433
$893K
434
$861K
435
$838K
436
$823K
437
$793K
438
$787K
439
$782K
440
$776K
441
$773K
442
$762K
443
$757K
444
$757K
445
$751K
446
$751K
447
$750K
448
$748K
449
$748K
450
$747K