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Alnylam Pharmaceuticals

846 hedge funds and large institutions have $51.7B invested in Alnylam Pharmaceuticals in 2025 Q4 according to their latest regulatory filings, with 169 funds opening new positions, 288 increasing their positions, 290 reducing their positions, and 118 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

0.83% less ownership

Funds ownership: 99.03%98.2% (-0.83%)

13% less capital invested

Capital invested by funds: $59.2B → $51.7B (-$7.48B)

69% less funds holding in top 10

Funds holding in top 10: 134 (-9)

Holders
846
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
4
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$760M
Puts
$494M
Net Calls
Net Calls Change

Top Buyers

1 +$303M
2 +$220M
3 +$149M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$108M
5
Morgan Stanley
Morgan Stanley
New York
+$108M

Top Sellers

1 -$635M
2 -$383M
3 -$360M
4
Jane Street
Jane Street
New York
-$287M
5
Macquarie Group
Macquarie Group
Australia
-$276M
Name Holding Trade Value Shares
Change
Change in
Stake
National Bank of Canada
126
National Bank of Canada
Quebec, Canada
$26.4M
Skandinaviska Enskilda Banken (SEB)
127
Skandinaviska Enskilda Banken (SEB)
Sweden
$26.3M
State of Wisconsin Investment Board
128
State of Wisconsin Investment Board
Wisconsin
$26.3M
Asset Management One
129
Asset Management One
Japan
$26M
IC
130
IEQ Capital
California
$25.8M
New York State Common Retirement Fund
131
New York State Common Retirement Fund
New York
$25.6M
Manulife (Manufacturers Life Insurance)
132
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$25.2M
Swedbank
133
Swedbank
Sweden
$24.6M
IHAM
134
Integral Health Asset Management
New York
$23.9M
CII
135
Capital International Inc
California
$23.7M
LP
136
LMR Partners
United Kingdom
$23.5M
Ensign Peak Advisors
137
Ensign Peak Advisors
Utah
$23M
Canada Life
138
Canada Life
Manitoba, Canada
$23M
Treasurer of the State of North Carolina
139
Treasurer of the State of North Carolina
North Carolina
$21.1M
Caisse de Depot et Placement du Quebec (CDPQ)
140
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$20.5M
VCM
141
Voleon Capital Management
California
$20.3M
KK
142
KLP Kapitalforvaltning
Norway
$20.1M
Mirae Asset Global Investments
143
Mirae Asset Global Investments
South Korea
$19.7M
FCM
144
Frontier Capital Management
Massachusetts
$19.4M
AAF
145
Andra AP-fonden
Sweden
$19.3M
VanEck Associates
146
VanEck Associates
New York
$19.1M
AP
147
Antipodes Partners
Australia
$19M
Allianz Asset Management
148
Allianz Asset Management
Germany
$19M
PHP
149
Parkman Healthcare Partners
Connecticut
$19M
Corient Private Wealth
150
Corient Private Wealth
Florida
$18.8M