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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
401
$499K
402
$498K
403
$489K
404
$476K
405
$473K
406
$472K
407
$470K
408
$463K
409
$454K
410
$451K
411
$443K
412
$442K
413
$442K
414
$442K
415
$442K
416
$435K
417
$433K
418
$427K
419
$426K
420
$422K
421
$421K
422
$419K
423
$417K
424
$412K
425
$411K