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Alnylam Pharmaceuticals
ALNY

Overview Fund Activity

617 hedge funds and large institutions have $34.2B invested in Alnylam Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 107 funds opening new positions, 236 increasing their positions, 197 reducing their positions, and 67 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
617
Holders Change
+32
Holders Change %
+5.47%
% of All Funds
8.38%
Holding in Top 10
10
Holding in Top 10 Change
+6
Holding in Top 10 Change %
+150%
% of All Funds
0.14%
New
107
Increased
236
Reduced
197
Closed
67
Calls
$274M
Puts
$238M
Net Calls
+$35.4M
Net Calls Change
+$6.38M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
+$493M
2
Bank of America
Bank of America
North Carolina
+$174M
3
Invesco
Invesco
Georgia
+$95.9M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$87.3M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
+$81.2M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$428M
2
Capital International Investors
Capital International Investors
California
-$334M
3
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$103M
4
BlackRock
BlackRock
New York
-$88M
5
Corient Private Wealth
Corient Private Wealth
Florida
-$63.7M
Name Holding Trade Value Shares
Change 		Shares
Change %
EAM
176
Erste Asset Management
Austria
$6.26M -$859K -3,200 -12%
X
177
Xponance
Pennsylvania
$6.25M +$189K +701 +3%
BBVA
178
Banco Bilbao Vizcaya Argentaria
Spain
$6.15M +$164K +609 +3%
ZIM
179
Zacks Investment Management
Illinois
$6.01M +$6.01M +22,262 New
URS
180
Utah Retirement Systems
Utah
$5.76M – – –
KCM
181
Kodai Capital Management
Illinois
$5.71M +$5.71M +21,159 New
CM
182
Cercano Management
Washington
$5.61M +$5.61M +20,772 New
LPL Financial
183
LPL Financial
California
$5.58M +$569K +2,107 +11%
OBAM
184
ODDO BHF Asset Management
France
$5.35M +$5.35M +19,821 New
Toronto Dominion Bank
185
Toronto Dominion Bank
Ontario, Canada
$5.23M +$705K +2,611 +16%
KBC Group
186
KBC Group
Belgium
$5.21M -$2.89M -10,714 -36%
CFM
187
Catalyst Funds Management
Australia
$5.18M +$5.18M +19,200 New
LIP
188
Liontrust Investment Partners
United Kingdom
$5.1M +$1.31M +4,857 +35%
PFSRSONJ
189
Police & Firemen's Retirement System of New Jersey
New Jersey
$5.06M – – –
QC
190
Quadrature Capital
United Kingdom
$5M +$5M +18,511 New
PCMH
191
Polymer Capital Management (HK)
Hong Kong
$4.81M +$2.02M +7,491 +73%
AIMCA
192
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$4.78M -$81K -300 -2%
CGIM
193
Capital Group Investment Management
Singapore
$4.68M +$48.3K +179 +1%
Comerica Bank
194
Comerica Bank
Texas
$4.66M +$881K +3,262 +23%
Fiera Capital (Canada)
195
Fiera Capital (Canada)
Quebec, Canada
$4.65M +$335K +1,242 +8%
AAF
196
Andra AP-fonden
Sweden
$4.54M -$3M -11,100 -40%
Carson Wealth (CWM LLC)
197
Carson Wealth (CWM LLC)
Nebraska
$4.5M +$938K +3,473 +26%
SC
198
Savant Capital
Illinois
$4.48M +$1.31M +4,853 +41%
JSSH
199
J. Safra Sarasin Holding
$4.44M -$731K -2,707 -14%
NAM
200
Nissay Asset Management
Japan
$4.38M +$72.1K +267 +2%
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