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Alnylam Pharmaceuticals

802 hedge funds and large institutions have $59B invested in Alnylam Pharmaceuticals in 2025 Q3 according to their latest regulatory filings, with 221 funds opening new positions, 272 increasing their positions, 219 reducing their positions, and 48 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:

24% more repeat investments, than reductions

Existing positions increased: 272 | Existing positions reduced: 219

2.48% less ownership

Funds ownership: 101.22%98.74% (-2.5%)

13% less call options, than puts

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

Holders
802
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
RhumbLine Advisers
76
RhumbLine Advisers
Massachusetts
$89.6M
Russell Investments Group
77
Russell Investments Group
United Kingdom
$89.2M
Victory Capital Management
78
Victory Capital Management
Texas
$82.2M
National Pension Service
79
National Pension Service
South Korea
$80.8M
Los Angeles Capital Management
80
Los Angeles Capital Management
California
$72.7M
Aberdeen Group
81
Aberdeen Group
United Kingdom
$71.7M
Handelsbanken Fonder
82
Handelsbanken Fonder
Sweden
$70.8M
BNP Paribas Financial Markets
83
BNP Paribas Financial Markets
France
$69.8M
SCM
84
SCS Capital Management
Massachusetts
$68.7M
Squarepoint
85
Squarepoint
New York
$66.4M
Canada Pension Plan Investment Board
86
Canada Pension Plan Investment Board
Ontario, Canada
$62.2M
Janus Henderson Group
87
Janus Henderson Group
United Kingdom
$61.9M
Fidelity International
88
Fidelity International
Bermuda
$61.8M
Neuberger Berman Group
89
Neuberger Berman Group
New York
$59.5M
CIS
90
Capital International Sarl
California
$59.1M
Mitsubishi UFJ Asset Management
91
Mitsubishi UFJ Asset Management
Japan
$55.1M
Envestnet Asset Management
92
Envestnet Asset Management
Illinois
$54.2M
FCM
93
Frontier Capital Management
Massachusetts
$54.2M
CAM
94
Congress Asset Management
Massachusetts
$54.2M
State Board of Administration of Florida Retirement System
95
State Board of Administration of Florida Retirement System
Florida
$53.5M
Robeco Institutional Asset Management
96
Robeco Institutional Asset Management
Netherlands
$51.6M
HighTower Advisors
97
HighTower Advisors
Illinois
$50.4M
Universal-Beteiligungs- und Servicegesellschaft
98
Universal-Beteiligungs- und Servicegesellschaft
Germany
$50.4M
DekaBank Deutsche Girozentrale
99
DekaBank Deutsche Girozentrale
Germany
$50.3M
Allianz Asset Management
100
Allianz Asset Management
Germany
$48.7M