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Alnylam Pharmaceuticals

645 hedge funds and large institutions have $43B invested in Alnylam Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 96 funds opening new positions, 257 increasing their positions, 214 reducing their positions, and 62 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

3.41% more ownership

Funds ownership: 97.81%101.22% (+3.4%)

8% less call options, than puts

Call options by funds: $188M | Put options by funds: $203M

10% less funds holding in top 10

Funds holding in top 10: 109 (-1)

Holders
645
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
9
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$188M
Puts
$203M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
National Pension Service
76
National Pension Service
South Korea
$57.1M
SCM
77
SCS Capital Management
Massachusetts
$55.7M
Arrowstreet Capital
78
Arrowstreet Capital
Massachusetts
$55.3M
Victory Capital Management
79
Victory Capital Management
Texas
$51M
Handelsbanken Fonder
80
Handelsbanken Fonder
Sweden
$50.7M
Janus Henderson Group
81
Janus Henderson Group
United Kingdom
$49M
Fidelity International
82
Fidelity International
Bermuda
$48.2M
DM
83
Deerfield Management
New York
$47.3M
BNP Paribas Financial Markets
84
BNP Paribas Financial Markets
France
$41.9M
CIS
85
Capital International Sarl
California
$41.8M
State Board of Administration of Florida Retirement System
86
State Board of Administration of Florida Retirement System
Florida
$41.4M
EAM
87
Eventide Asset Management
Massachusetts
$41.1M
AP
88
Antipodes Partners
Australia
$40M
WorldQuant Millennium Advisors
89
WorldQuant Millennium Advisors
New York
$38.3M
Balyasny Asset Management
90
Balyasny Asset Management
Illinois
$37.6M
Universal-Beteiligungs- und Servicegesellschaft
91
Universal-Beteiligungs- und Servicegesellschaft
Germany
$37.3M
DekaBank Deutsche Girozentrale
92
DekaBank Deutsche Girozentrale
Germany
$36.5M
Mitsubishi UFJ Asset Management
93
Mitsubishi UFJ Asset Management
Japan
$36.5M
Korea Investment Corp
94
Korea Investment Corp
South Korea
$36.1M
HighTower Advisors
95
HighTower Advisors
Illinois
$35.6M
D.E. Shaw & Co
96
D.E. Shaw & Co
New York
$35.3M
SCM
97
Soleus Capital Management
Connecticut
$34.8M
FCM
98
Frontier Capital Management
Massachusetts
$33.6M
Ensign Peak Advisors
99
Ensign Peak Advisors
Utah
$32.7M
RSCM
100
Rock Springs Capital Management
Maryland
$32.6M