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Alnylam Pharmaceuticals
ALNY

Overview Fund Activity

618 hedge funds and large institutions have $34.2B invested in Alnylam Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 108 funds opening new positions, 236 increasing their positions, 197 reducing their positions, and 67 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
618
Holders Change
+33
Holders Change %
+5.64%
% of All Funds
8.4%
Holding in Top 10
10
Holding in Top 10 Change
+6
Holding in Top 10 Change %
+150%
% of All Funds
0.14%
New
108
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 %
BAM
651
Blueshift Asset Management
New Jersey
– -$400K -1,698 Closed
AC
652
AXQ Capital
New Jersey
– -$387K -1,644 Closed
QT
653
Quantbot Technologies
New York
– -$374K -1,588 Closed
JGGDR
654
JGP Global Gestao de Recursos
Brazil
– -$364K -1,546 Closed
VEA
655
Virtus ETF Advisers
New York
– -$336K -1,426 Closed
FTUS
656
Flow Traders U.S.
New York
– -$328K -1,392 Closed
PAS
657
Park Avenue Securities
New York
– -$322K -1,368 Closed
BHCM
658
Brevan Howard Capital Management
Jersey
– -$314K -1,333 Closed
GS
659
GTS Securities
New York
– -$274K -1,163 Closed
KAM
660
Kazazian Asset Management
Florida
– -$268K -1,140 Closed
AT
661
American Trust
Kentucky
– -$260K -1,105 Closed
AWM
662
Ariadne Wealth Management
California
– -$286K -1,042 Closed
CPIG
663
Chicago Partners Investment Group
Illinois
– -$246K -1,022 Closed
CC
664
Corton Capital
Ontario, Canada
– -$223K -946 Closed
CPA
665
Capital Performance Advisors
California
– -$206K -877 Closed
WAM
666
Wolverine Asset Management
Illinois
– -$139K -590 Closed
HPC
667
HM Payson & Co
Maine
– -$59.3K -252 Closed
VWM
668
Venturi Wealth Management
Texas
– -$59.3K -252 Closed
CFG
669
CKW Financial Group
Hawaii
– -$47K -200 Closed
CAS
670
Coppell Advisory Solutions
Texas
– -$35.4K -150 Closed
CT
671
Colonial Trust
South Carolina
– -$35.3K -150 Closed
RS
672
R Squared
Hong Kong
– -$32.9K -140 Closed
PSFG
673
Park Square Financial Group
Georgia
– -$28.5K -121 Closed
EC
674
Elequin Capital
New York
– -$12.7K -54 Closed
AWM
675
Avior Wealth Management
Nebraska
– -$7.77K -33 Closed
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