ALNY icon

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 %
Fifth Third Bancorp
551
Fifth Third Bancorp
Ohio
$24.8K +$1.96K +6 +9%
TFM
552
TFC Financial Management
Massachusetts
$24.1K – – –
S
553
Sachetta
Massachusetts
$23.8K +$2.28K +7 +11%
WT
554
Whittier Trust
California
$22.5K +$10.8K +33 +92%
SO
555
Sierra Ocean
California
$22.2K -$978 -3 -4%
TRCT
556
Tower Research Capital (TRC)
New York
$20.9K -$430K -1,319 -95%
MCM
557
MV Capital Management
Maryland
$20.5K +$978 +3 +5%
SS
558
SBI Securities
Japan
$20.5K +$7.5K +23 +58%
PWMG
559
Private Wealth Management Group
New Jersey
$20.2K +$3.59K +11 +22%
CFO
560
CVA Family Office
Colorado
$19.9K +$7.83K +24 +65%
GTAM
561
Global Trust Asset Management
Florida
$19.6K -$20.2K -62 -51%
TC
562
Truvestments Capital
Florida
$18.7K – – –
CPG
563
Cornerstone Planning Group
New Jersey
$17.6K +$3.35K +8 +24%
WTC
564
WhitTier Trust Company
Nevada
$17K +$17K +52 New
GAM
565
Generali Asset Management
Italy
$16.3K – – –
SJIM
566
St. Johns Investment Management
Florida
$16.3K – – –
PSB
567
Piscataqua Savings Bank
New Hampshire
$16.3K – – –
PFSC
568
Peoples Financial Services Corp
Pennsylvania
$16.3K – – –
RF
569
Rossby Financial
Florida
$16K +$16K +49 New
LI
570
LRI Investments
Florida
$15.7K +$15.7K +48 New
WIM
571
Westside Investment Management
California
$15.5K +$15.5K +48 New
OP
572
ORG Partners
Indiana
$15.1K +$3.54K +11 +31%
WA
573
WPG Advisers
Maryland
$13.7K -$1.63K -5 -11%
PWAM
574
Private Wealth Asset Management
Iowa
$13.7K -$1.63K -5 -11%
WA
575
Whipplewood Advisors
Colorado
$13.7K -$20.5K -63 -60%
21 22
23
24 25