ALNY icon

Alnylam Pharmaceuticals
ALNY

Overview Fund Activity

640 hedge funds and large institutions have $42.9B invested in Alnylam Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 96 funds opening new positions, 253 increasing their positions, 213 reducing their positions, and 63 closing their positions.

Holders
640
Holders Change
+22
Holders Change %
+3.56%
% of All Funds
8.6%
Holding in Top 10
9
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-10%
% of All Funds
0.12%
New
96
Increased
253
Reduced
213
Closed
63
Calls
$122M
Puts
$147M
Net Calls
-$25M
Net Calls Change
-$60.4M

Top Buyers

1
Norges Bank
1
Norges Bank
Norway
$663M
2
Citadel Advisors
2
Citadel Advisors
Florida
$196M
3
Holocene Advisors
3
Holocene Advisors
New York
$195M
4
ClearBridge Investments
4
ClearBridge Investments
New York
$182M
5
Macquarie Group
5
Macquarie Group
Australia
$196M

Top Sellers

1
AQR Capital Management
1
AQR Capital Management
Connecticut
$61.3M
2
Baillie Gifford & Co
2
Baillie Gifford & Co
United Kingdom
$989M
3
Wellington Management Group
3
Wellington Management Group
Massachusetts
$677M
4
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$1.03B
5
Qube Research & Technologies (QRT)
5
Qube Research & Technologies (QRT)
United Kingdom
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Robeco Institutional Asset Management
101
Robeco Institutional Asset Management
Netherlands
$31.4M 96,368 -7,113 -7%
Envestnet Asset Management
102
Envestnet Asset Management
Illinois
$31.2M 95,796 +23,749 +33%
Barclays
103
Barclays
United Kingdom
$30.7M 94,058 -1,661 -2%
Russell Investments Group
104
Russell Investments Group
United Kingdom
$30.4M 93,435 -35,761 -28%
PAM
105
Panagora Asset Management
Massachusetts
$30.2M 92,499 -4,305 -4%
PHP
106
Parkman Healthcare Partners
Connecticut
$30.1M 92,338 +23,400 +34%
Nomura Asset Management
107
Nomura Asset Management
Japan
$29.8M 91,374 +4,531 +5%
Canada Life
108
Canada Life
Manitoba, Canada
$29.7M 91,154 +7,326 +9%
Millennium Management
109
Millennium Management
New York
$29.5M 90,445 -196,892 -69%
TLP
110
Tri Locum Partners
New York
$29.2M 89,525 +89,525 New
Manulife (Manufacturers Life Insurance)
111
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$28.3M 86,840 -12,029 -12%
Mitsubishi UFJ Trust & Banking
112
Mitsubishi UFJ Trust & Banking
Japan
$28M 85,734 -24,931 -23%
Skandinaviska Enskilda Banken (SEB)
113
Skandinaviska Enskilda Banken (SEB)
Sweden
$27.7M 84,888 -1,236 -1%
Adage Capital Partners
114
Adage Capital Partners
Massachusetts
$27.5M 84,390 -197,794 -70%
Prudential Financial
115
Prudential Financial
New Jersey
$27.4M 83,922 -88,084 -51%
CI
116
Capital International
California
$27M 82,800 +894 +1%
Axa
117
Axa
France
$26.9M 82,480 -6,172 -7%
HSBC Holdings
118
HSBC Holdings
United Kingdom
$26.6M 81,748 +20,483 +33%
CC
119
Casdin Capital
New York
$26.6M 81,500 -38,500 -32%
DCM
120
Driehaus Capital Management
Illinois
$26M 79,714 +22,586 +40%
State of Wisconsin Investment Board
121
State of Wisconsin Investment Board
Wisconsin
$25.5M 78,106 +4,951 +7%
PAI
122
Palo Alto Investors
California
$24.6M 75,535 -7,953 -10%
PHS
123
PFM Health Sciences
California
$23.6M 72,220 -14,925 -17%
CII
124
Capital International Inc
California
$23.4M 71,831 +4,870 +7%
Asset Management One
125
Asset Management One
Japan
$22.6M 69,310 +853 +1%
3 4
5
6 7