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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 %
CF
676
Corebridge Financial
Texas
– -$575K -2,128 Closed
MWA
677
Monograph Wealth Advisors
California
– -$574K -2,126 Closed
MYAM
678
Meiji Yasuda Asset Management
Japan
– -$536K -1,986 Closed
XT
679
XTX Topco
Cayman Islands
– -$402K -1,488 Closed
YC
680
Yarbrough Capital
Tennessee
– -$372K -1,376 Closed
AFGAS
681
Allegiance Financial Group Advisory Services
Virginia
– -$365K -1,353 Closed
OTPPB
682
Ontario Teachers' Pension Plan Board
Ontario, Canada
– -$363K -1,345 Closed
KRW
683
Kaufman Rossin Wealth
Florida
– -$351K -1,300 Closed
NAM
684
NorthCrest Asset Manangement
Minnesota
– -$323K -1,196 Closed
TSS
685
Two Sigma Securities
New York
– -$313K -1,159 Closed
AG
686
Algert Global
California
– -$311K -1,150 Closed
TC
687
TownSquare Capital
Utah
– -$286K -1,059 Closed
LJAC
688
L.J. Altfest & Co
New York
– -$284K -1,050 Closed
PCM
689
Polymer Capital Management
New York
– -$259K -961 Closed
PPW
690
Parcion Private Wealth
Washington
– -$202K -748 Closed
CIAM
691
Caitong International Asset Management
Hong Kong
– -$167K -618 Closed
QCG
692
Quadrant Capital Group
Ohio
– -$148K -548 Closed
BC
693
Bayforest Capital
United Kingdom
– -$82.6K -306 Closed
CWC
694
Carolinas Wealth Consulting
North Carolina
– -$42.4K -157 Closed
SW
695
SVB Wealth
Massachusetts
– -$27K -100 Closed
RTC
696
Riverview Trust Company
Washington
– -$21.1K -78 Closed
BF
697
BOK Financial
Oklahoma
– -$14K -52 Closed
SCB
698
Saudi Central Bank
Saudi Arabia
– -$13.8K -51 Closed
BT
699
Banque Transatlantique
France
– -$7.24K -29 Closed
PGAM
700
Princeton Global Asset Management
New Jersey
– -$6.75K -25 Closed
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