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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
1
$7.65B
2
$7.49B
3
$6.19B
4
$4.52B
5
$3.29B
6
$2.07B
7
$1.41B
8
$1.27B
9
$1.14B
10
$1.06B
11
$991M
12
$890M
13
$833M
14
$821M
15
$748M
16
$683M
17
$676M
18
$635M
19
$618M
20
$437M
21
$407M
22
$405M
23
$380M
24
$370M
25
$336M