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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
ASRS
151
Arizona State Retirement System
Arizona
$12.4M
Parnassus Investments
152
Parnassus Investments
California
$12.2M
Teacher Retirement System of Texas
153
Teacher Retirement System of Texas
Texas
$11.9M
OBAM
154
ODDO BHF Asset Management
France
$11.7M
Canada Pension Plan Investment Board
155
Canada Pension Plan Investment Board
Ontario, Canada
$11.6M
RSS
156
Rosenblum Silverman Sutton
California
$11.2M
TRSOTSOK
157
Teachers Retirement System of the State of Kentucky
Kentucky
$10.8M
EGM
158
Engineers Gate Manager
New York
$10.6M
AT
159
AMF Tjänstepension
Sweden
$10.6M
Rafferty Asset Management
160
Rafferty Asset Management
New York
$10.5M
IMCOOI
161
Investment Management Corp of Ontario (IMCO)
Canada
$10.3M
BNP Paribas Asset Management
162
BNP Paribas Asset Management
France
$10.2M
Zurich Cantonal Bank
163
Zurich Cantonal Bank
Switzerland
$10M
LPL Financial
164
LPL Financial
California
$9.89M
AG
165
AIA Group
Hong Kong
$9.86M
SO
166
STRS Ohio
Ohio
$9.83M
FAF
167
Fjarde Ap-fonden
Sweden
$9.79M
EAM
168
Erste Asset Management
Austria
$9.62M
Brown Advisory
169
Brown Advisory
Maryland
$9.61M
ITP
170
Iron Triangle Partners
Connecticut
$9.57M
PCMH
171
Polymer Capital Management (HK)
Hong Kong
$9.41M
CUAMC
172
China Universal Asset Management Company
China
$9.07M
Fiera Capital (Canada)
173
Fiera Capital (Canada)
Quebec, Canada
$9.05M
ACM
174
Atika Capital Management
New York
$9.03M
DnB Asset Management
175
DnB Asset Management
Norway
$8.96M