ALNY icon

Alnylam Pharmaceuticals
ALNY

Overview Fund Activity

646 hedge funds and large institutions have $43B invested in Alnylam Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 97 funds opening new positions, 257 increasing their positions, 214 reducing their positions, and 63 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
646
Holders Change
+28
Holders Change %
+4.53%
% of All Funds
8.66%
Holding in Top 10
9
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-10%
% of All Funds
0.12%
New
97
Increased
257
Reduced
214
Closed
63
Calls
$188M
Puts
$203M
Net Calls
-$15.5M
Net Calls Change
-$50.8M

Top Buyers

1
Citadel Advisors
Citadel Advisors
Florida
$196M
2
Holocene Advisors
Holocene Advisors
New York
$195M
3
ClearBridge Investments
ClearBridge Investments
New York
$182M
4
Macquarie Group
Macquarie Group
Australia
$196M
5
Fidelity Investments
Fidelity Investments
Massachusetts
$5.15B

Top Sellers

1
AQR Capital Management
AQR Capital Management
Connecticut
$61.3M
2
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
$989M
3
Wellington Management Group
Wellington Management Group
Massachusetts
$677M
4
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
$1.03B
5
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
CII
126
Capital International Inc
California
$23.4M +$1.59M +4,870 +7%
Asset Management One
127
Asset Management One
Japan
$22.6M +$278K +853 +1%
ZIG
128
Zurich Insurance Group
Switzerland
$22.1M +$22.1M +67,794 New
Los Angeles Capital Management
129
Los Angeles Capital Management
California
$22M -$4.39M -13,463 -17%
AllianceBernstein
130
AllianceBernstein
Tennessee
$21.9M +$7.27M +22,294 +50%
Swedbank
131
Swedbank
Sweden
$21M +$1.41M +4,322 +7%
New York State Common Retirement Fund
132
New York State Common Retirement Fund
New York
$20.6M -$326K -1,000 -2%
SSA
133
Schonfeld Strategic Advisors
New York
$19.2M +$18.2M +55,675 +1,806%
Treasurer of the State of North Carolina
134
Treasurer of the State of North Carolina
North Carolina
$19M -$212K -651 -1%
CM
135
Cercano Management
Washington
$18.6M +$11.8M +36,181 +174%
IC
136
Ikarian Capital
Texas
$18.5M +$8.15M +25,000 +79%
IHAM
137
Integral Health Asset Management
New York
$17.9M +$1.63M +5,000 +10%
VanEck Associates
138
VanEck Associates
New York
$17.8M -$3.13M -9,584 -15%
GAM
139
Groupama Asset Management
France
$17.6M +$2.99M +8,246 +21%
USCWA
140
U.S. Capital Wealth Advisors
Texas
$17M -$1.3M -3,984 -7%
RPAM
141
Rhenman & Partners Asset Management
Sweden
$16.7M +$978K +3,000 +6%
Principal Financial Group
142
Principal Financial Group
Iowa
$16.5M +$5.16M +15,833 +46%
KK
143
KLP Kapitalforvaltning
Norway
$16M +$1.76M +5,400 +12%
EHI
144
Eagle Health Investments
Connecticut
$15M -$6.38M -19,570 -30%
State of New Jersey Common Pension Fund D
145
State of New Jersey Common Pension Fund D
New Jersey
$14.3M +$37.2K +114 +0.3%
RAM
146
Resona Asset Management
Japan
$14.2M +$1.56M +4,780 +12%
Corient Private Wealth
147
Corient Private Wealth
Florida
$13.8M -$135K -415 -1%
LF
148
Lansforsakringar Fondforvaltning
Sweden
$13.1M -$676K -2,072 -5%
Ohio Public Employees Retirement System (OPERS)
149
Ohio Public Employees Retirement System (OPERS)
Ohio
$12.6M -$299K -917 -2%
Walleye Capital
150
Walleye Capital
New York
$12.6M +$11.9M +36,345 +1,534%
4 5
6
7 8