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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
51
$170M
52
$163M
53
$163M
54
$150M
55
$143M
56
$143M
57
$143M
58
$139M
59
$138M
60
$133M
61
$130M
62
$128M
63
$125M
64
$117M
65
$115M
66
$110M
67
$105M
68
$103M
69
$101M
70
$101M
71
$97.7M
72
$96.9M
73
$95.9M
74
$92.9M
75
$90.9M