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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
376
$1.6M
377
$1.57M
378
$1.53M
379
$1.53M
380
$1.5M
381
$1.49M
382
$1.48M
383
$1.47M
384
$1.47M
385
$1.45M
386
$1.44M
387
$1.44M
388
$1.43M
389
$1.42M
390
$1.37M
391
$1.35M
392
$1.32M
393
$1.29M
394
$1.28M
395
$1.27M
396
$1.27M
397
$1.26M
398
$1.26M
399
$1.25M
400
$1.25M