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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
CII
126
Capital International Inc
California
$23.4M
Asset Management One
127
Asset Management One
Japan
$22.6M
ZIG
128
Zurich Insurance Group
Switzerland
$22.1M
Los Angeles Capital Management
129
Los Angeles Capital Management
California
$22M
AllianceBernstein
130
AllianceBernstein
Tennessee
$21.9M
Swedbank
131
Swedbank
Sweden
$21M
New York State Common Retirement Fund
132
New York State Common Retirement Fund
New York
$20.6M
SSA
133
Schonfeld Strategic Advisors
New York
$19.2M
Treasurer of the State of North Carolina
134
Treasurer of the State of North Carolina
North Carolina
$19M
CM
135
Cercano Management
Washington
$18.6M
IC
136
Ikarian Capital
Texas
$18.5M
IHAM
137
Integral Health Asset Management
New York
$17.9M
VanEck Associates
138
VanEck Associates
New York
$17.8M
GAM
139
Groupama Asset Management
France
$17.6M
USCWA
140
U.S. Capital Wealth Advisors
Texas
$17M
RPAM
141
Rhenman & Partners Asset Management
Sweden
$16.7M
Principal Financial Group
142
Principal Financial Group
Iowa
$16.5M
KK
143
KLP Kapitalforvaltning
Norway
$16M
EHI
144
Eagle Health Investments
Connecticut
$15M
State of New Jersey Common Pension Fund D
145
State of New Jersey Common Pension Fund D
New Jersey
$14.3M
RAM
146
Resona Asset Management
Japan
$14.2M
Corient Private Wealth
147
Corient Private Wealth
Florida
$13.7M
LF
148
Lansforsakringar Fondforvaltning
Sweden
$13.1M
Ohio Public Employees Retirement System (OPERS)
149
Ohio Public Employees Retirement System (OPERS)
Ohio
$12.6M
Walleye Capital
150
Walleye Capital
New York
$12.6M