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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
26
$156M
27
$149M
28
$148M
29
$134M
30
$131M
31
$130M
32
$128M
33
$124M
34
$119M
35
$114M
36
$98.3M
37
$93.5M
38
$93.3M
39
$91.1M
40
$89.2M
41
$83.6M
42
$83.5M
43
$81.2M
44
$81M
45
$78.7M
46
$78.3M
47
$77.6M
48
$77.5M
49
$76.2M
50
$75.6M