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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
GAM
201
Gotham Asset Management
New York
$5.8M
CGIM
202
Capital Group Investment Management
Singapore
$5.78M
Assenagon Asset Management
203
Assenagon Asset Management
Luxembourg
$5.77M
Jacobs Levy Equity Management
204
Jacobs Levy Equity Management
New Jersey
$5.76M
JF
205
Jump Financial
Illinois
$5.6M
JG
206
Jain Global
New York
$5.46M
NAM
207
Nissay Asset Management
Japan
$5.31M
MOACM
208
Mutual of America Capital Management
New York
$5.2M
Creative Planning
209
Creative Planning
Kansas
$5.08M
Hudson Bay Capital Management
210
Hudson Bay Capital Management
Connecticut
$5M
Mariner
211
Mariner
Kansas
$4.91M
JSSH
212
J. Safra Sarasin Holding
$4.89M
SMDAM
213
Sumitomo Mitsui DS Asset Management
Japan
$4.83M
EMPI
214
Elo Mutual Pension Insurance
Finland
$4.61M
Stifel Financial
215
Stifel Financial
Missouri
$4.47M
AS
216
Aware Super
Australia
$4.46M
HCS
217
Himension Capital (Singapore)
Singapore
$4.4M
QCM
218
Quantinno Capital Management
New York
$4.39M
VPIM
219
Vanguard Personalized Indexing Management
California
$4.37M
PNC Financial Services Group
220
PNC Financial Services Group
Pennsylvania
$4.29M
Bank of Montreal
221
Bank of Montreal
Ontario, Canada
$4.28M
MASUI
222
MIRAE ASSET SECURITIES (USA) INC.
New York
$4.25M
Daiwa Securities Group
223
Daiwa Securities Group
Japan
$4.22M
Public Employees Retirement Association of Colorado
224
Public Employees Retirement Association of Colorado
Colorado
$4.19M
LIP
225
Liontrust Investment Partners
United Kingdom
$4.16M