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Alnylam Pharmaceuticals

817 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, 279 increasing their positions, 222 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 funds holding

Funds holding:

26% more repeat investments, than reductions

Existing positions increased: 279 | Existing positions reduced: 222

2.27% less ownership

Funds ownership: 101.28%99.02% (-2.3%)

13% less call options, than puts

Call options by funds: $562M | Put options by funds: $649M

Holders
817
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
Korea Investment Corp
76
Korea Investment Corp
South Korea
$89.8M
RhumbLine Advisers
77
RhumbLine Advisers
Massachusetts
$89.6M
Russell Investments Group
78
Russell Investments Group
United Kingdom
$89.2M
Victory Capital Management
79
Victory Capital Management
Texas
$82.2M
National Pension Service
80
National Pension Service
South Korea
$80.8M
Los Angeles Capital Management
81
Los Angeles Capital Management
California
$72.7M
Aberdeen Group
82
Aberdeen Group
United Kingdom
$71.7M
Handelsbanken Fonder
83
Handelsbanken Fonder
Sweden
$70.8M
BNP Paribas Financial Markets
84
BNP Paribas Financial Markets
France
$69.8M
SCM
85
SCS Capital Management
Massachusetts
$68.7M
Squarepoint
86
Squarepoint
New York
$66.4M
Canada Pension Plan Investment Board
87
Canada Pension Plan Investment Board
Ontario, Canada
$62.2M
Janus Henderson Group
88
Janus Henderson Group
United Kingdom
$61.9M
Fidelity International
89
Fidelity International
Bermuda
$61.8M
Neuberger Berman Group
90
Neuberger Berman Group
New York
$59.5M
CIS
91
Capital International Sarl
California
$59.1M
Mitsubishi UFJ Asset Management
92
Mitsubishi UFJ Asset Management
Japan
$55.1M
Envestnet Asset Management
93
Envestnet Asset Management
Illinois
$54.2M
FCM
94
Frontier Capital Management
Massachusetts
$54.2M
CAM
95
Congress Asset Management
Massachusetts
$54.2M
State Board of Administration of Florida Retirement System
96
State Board of Administration of Florida Retirement System
Florida
$53.5M
Robeco Institutional Asset Management
97
Robeco Institutional Asset Management
Netherlands
$51.6M
HighTower Advisors
98
HighTower Advisors
Illinois
$50.4M
Universal-Beteiligungs- und Servicegesellschaft
99
Universal-Beteiligungs- und Servicegesellschaft
Germany
$50.4M
DekaBank Deutsche Girozentrale
100
DekaBank Deutsche Girozentrale
Germany
$50.3M