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iRhythm Technologies
IRTC

Overview Fund Activity

300 hedge funds and large institutions have $5.44B invested in iRhythm Technologies in 2025 Q2 according to their latest regulatory filings, with 69 funds opening new positions, 101 increasing their positions, 93 reducing their positions, and 22 closing their positions.

Holders
300
Holders Change
+45
Holders Change %
+17.65%
% of All Funds
4.03%
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
101
Reduced
93
Closed
22
Calls
$27.3M
Puts
$37.6M
Net Calls
-$10.3M
Net Calls Change
-$787K

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 Holding Trade Value Shares
Change 		Shares
Change %
KCM
126
Kennedy Capital Management
Missouri
$2.44M -$295K -1,915 -11%
FCM
127
Fieldview Capital Management
Michigan
$2.39M -$1.34M -8,696 -36%
Janus Henderson Group
128
Janus Henderson Group
United Kingdom
$2.13M – – –
State of New Jersey Common Pension Fund D
129
State of New Jersey Common Pension Fund D
New Jersey
$2.04M -$470K -3,050 -19%
Ensign Peak Advisors
130
Ensign Peak Advisors
Utah
$2.03M +$394K +2,560 +24%
WG
131
Winton Group
United Kingdom
$1.98M +$1.98M +12,877 New
GIM
132
Granahan Investment Management
Massachusetts
$1.95M -$325K -2,108 -14%
ET
133
Entropy Technologies
New York
$1.72M +$1.72M +11,189 New
BMSSC
134
B. Metzler seel. Sohn & Co
Germany
$1.71M -$1.44M -9,381 -46%
WF
135
WoodTrust Financial
Wisconsin
$1.64M – – –
Creative Planning
136
Creative Planning
Kansas
$1.61M +$298K +1,933 +23%
SCM
137
Semanteon Capital Management
Massachusetts
$1.53M -$55.4K -360 -3%
N
138
Numerai
California
$1.5M +$1.5M +9,757 New
Truist Financial
139
Truist Financial
North Carolina
$1.49M -$68.5K -445 -4%
CC
140
Centiva Capital
New York
$1.48M +$1.48M +9,622 New
SSA
141
Schonfeld Strategic Advisors
New York
$1.46M +$1.03M +6,672 +238%
ONGA
142
O'Neil Global Advisors
California
$1.41M +$1.41M +9,176 New
ASRS
143
Arizona State Retirement System
Arizona
$1.41M +$30.6K +199 +2%
Handelsbanken Fonder
144
Handelsbanken Fonder
Sweden
$1.41M -$539K -3,500 -28%
State Board of Administration of Florida Retirement System
145
State Board of Administration of Florida Retirement System
Florida
$1.4M – – –
Zurich Cantonal Bank
146
Zurich Cantonal Bank
Switzerland
$1.39M +$53.7K +349 +4%
AG
147
Ascent Group
Virginia
$1.38M +$85.6K +556 +7%
VOYA Investment Management
148
VOYA Investment Management
Georgia
$1.34M +$51.4K +334 +4%
AAIS
149
ABN AMRO Investment Solutions
$1.28M -$105K -684 -8%
Arrowstreet Capital
150
Arrowstreet Capital
Massachusetts
$1.28M +$1.28M +8,304 New
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6
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