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iRhythm Technologies
IRTC

Overview Fund Activity

297 hedge funds and large institutions have $5.4B invested in iRhythm Technologies in 2025 Q2 according to their latest regulatory filings, with 69 funds opening new positions, 99 increasing their positions, 92 reducing their positions, and 22 closing their positions.

Holders
297
Holders Change
+42
Holders Change %
+16.47%
% of All Funds
3.99%
Holding in Top 10
5
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+66.67%
% of All Funds
0.07%
New
69
Increased
99
Reduced
92
Closed
22
Calls
$21.6M
Puts
$29.6M
Net Calls
-$8.01M
Net Calls Change
+$1.55M

Top Buyers

1
Holocene Advisors
1
Holocene Advisors
New York
$48.2M
2
Man Group
2
Man Group
United Kingdom
$41.2M
3
Loomis, Sayles & Company
3
Loomis, Sayles & Company
Massachusetts
$39.3M
4
D.E. Shaw & Co
4
D.E. Shaw & Co
New York
$38.2M
5
Wellington Management Group
5
Wellington Management Group
Massachusetts
$60.9M

Top Sellers

1
Capital Research Global Investors
1
Capital Research Global Investors
California
$232M
2
Mackenzie Financial
2
Mackenzie Financial
Ontario, Canada
$112M
3
Westfield Capital Management
3
Westfield Capital Management
Massachusetts
$44.7M
4
UBS AM
4
UBS AM
Illinois
$93.6M
5
B
5
Braidwell
Connecticut
$46.2M
Name Market Value Shares Shares
Change 		Shares
Change %
HA
101
Homestead Advisers
Virginia
$4.99M 32,400 – –
BPC
102
Banque Pictet & Cie
Switzerland
$4.87M 31,641 -14,904 -32%
EAM
103
EFG Asset Management
Oregon
$4.71M 30,612 -4,196 -12%
YIH
104
Y-Intercept (HK)
Hong Kong
$4.68M 30,413 +30,413 New
AG
105
Algert Global
California
$4.61M 29,966 +16,923 +130%
Mirae Asset Global ETFs Holdings
106
Mirae Asset Global ETFs Holdings
Hong Kong
$4.59M 29,811 -5,460 -15%
California State Teachers Retirement System (CalSTRS)
107
California State Teachers Retirement System (CalSTRS)
California
$4.45M 28,917 +99 +0.3%
HCA
108
Harbor Capital Advisors
Illinois
$4.36M 28,336 -25,897 -48%
SG Americas Securities
109
SG Americas Securities
New York
$4.31M 27,989 +19,562 +232%
Comerica Bank
110
Comerica Bank
Texas
$4.24M 27,538 -34,690 -56%
T. Rowe Price Associates
111
T. Rowe Price Associates
Maryland
$4.04M 26,247 +3,340 +15%
HP
112
HealthInvest Partners
Sweden
$3.9M 25,302 +4,755 +23%
Wells Fargo
113
Wells Fargo
California
$3.87M 25,132 +1,139 +5%
MSK
114
Melissa S. Kampmann
$3.78M 24,550 -475 -2%
Russell Investments Group
115
Russell Investments Group
United Kingdom
$3.73M 24,251 +3,404 +16%
N
116
Natixis
France
$3.62M 23,500 +17,500 +292%
QT
117
Quantbot Technologies
New York
$3.58M 23,242 +23,242 New
MOACM
118
Mutual of America Capital Management
New York
$3.49M 22,652 +1,925 +9%
Universal-Beteiligungs- und Servicegesellschaft
119
Universal-Beteiligungs- und Servicegesellschaft
Germany
$3.2M 20,793 +8,372 +67%
MIM
120
MetLife Investment Management
New Jersey
$2.93M 19,005 +455 +2%
IIM
121
INTECH Investment Management
Florida
$2.69M 17,484 – –
XT
122
XTX Topco
Cayman Islands
$2.54M 16,504 +14,042 +570%
Nomura Holdings
123
Nomura Holdings
Japan
$2.47M 16,031 +16,031 New
KCM
124
Kennedy Capital Management
Missouri
$2.44M 15,844 -1,915 -11%
FCM
125
Fieldview Capital Management
Michigan
$2.39M 15,507 -8,696 -36%
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5
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