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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
351
$916K
352
$916K
353
$915K
354
$900K
355
$899K
356
$892K
357
$890K
358
$874K
359
$864K
360
$838K
361
$836K
362
$805K
363
$798K
364
$766K
365
$762K
366
$737K
367
$717K
368
$715K
369
$711K
370
$706K
371
$703K
372
$697K
373
$691K
374
$686K
375
$680K