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Alnylam Pharmaceuticals

618 hedge funds and large institutions have $34.2B invested in Alnylam Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 107 funds opening new positions, 238 increasing their positions, 197 reducing their positions, and 67 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
618
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$274M
Puts
$238M
Net Calls
Net Calls Change

Top Sellers

1 -$428M
2 -$334M
3 -$103M
4
BlackRock
BlackRock
New York
-$88M
5
Corient Private Wealth
Corient Private Wealth
Florida
-$63.7M
Name Holding Trade Value Shares
Change
Change in
Stake
326
$1.08M
327
$1.05M
328
$1.04M
329
$1.04M
330
$1.03M
331
$1.02M
332
$1.01M
333
$1.01M
334
$1M
335
$1M
336
$1M
337
$979K
338
$955K
339
$917K
340
$909K
341
$907K
342
$907K
343
$902K
344
$895K
345
$892K
346
$888K
347
$878K
348
$873K
349
$867K
350
$849K