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iRhythm Technologies
IRTC

Overview Fund Activity

255 hedge funds and large institutions have $3.77B invested in iRhythm Technologies in 2025 Q1 according to their latest regulatory filings, with 56 funds opening new positions, 79 increasing their positions, 82 reducing their positions, and 22 closing their positions.

Holders
255
Holders Change
+31
Holders Change %
+13.84%
% of All Funds
3.46%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.04%
New
56
Increased
79
Reduced
82
Closed
22
Calls
$14.4M
Puts
$24M
Net Calls
-$9.56M
Net Calls Change
+$4.76M

Top Buyers

1
UBS AM
1
UBS AM
Illinois
$94.5M
2
Capital Research Global Investors
2
Capital Research Global Investors
California
$231M
3
Fuller & Thaler Asset Management
3
Fuller & Thaler Asset Management
California
$54.2M
4
Point72 Asset Management
4
Point72 Asset Management
Connecticut
$44M
5
Millennium Management
5
Millennium Management
New York
$41.8M

Top Sellers

1
Alyeska Investment Group
1
Alyeska Investment Group
Illinois
$0
2
Citadel Advisors
2
Citadel Advisors
Florida
$325K
3
Mackenzie Financial
3
Mackenzie Financial
Ontario, Canada
$121M
4
Sands Capital Management
4
Sands Capital Management
Virginia
$316M
5
B
5
Braidwell
Connecticut
$58.2M
Name Holding Trade Value Shares
Change 		Shares
Change %
MIM
101
MetLife Investment Management
New Jersey
$1.94M -$62K -592 -3%
ACM
102
Aquatic Capital Management
Illinois
$1.94M +$1.5M +14,367 +345%
KCM
103
Kennedy Capital Management
Missouri
$1.86M +$1.86M +17,759 New
IIM
104
INTECH Investment Management
Florida
$1.83M +$268K +2,557 +17%
BHCM
105
Brevan Howard Capital Management
Jersey
$1.79M +$1.79M +17,122 New
State of New Jersey Common Pension Fund D
106
State of New Jersey Common Pension Fund D
New Jersey
$1.7M -$1.21M -11,542 -41%
Group One Trading
107
Group One Trading
Illinois
$1.66M -$473K -4,515 -22%
CF
108
Corebridge Financial
Texas
$1.6M -$23.8K -227 -1%
GIM
109
Granahan Investment Management
Massachusetts
$1.55M -$3.24M -30,958 -68%
Holocene Advisors
110
Holocene Advisors
New York
$1.54M -$7.44M -71,106 -83%
Janus Henderson Group
111
Janus Henderson Group
United Kingdom
$1.45M – – –
UOC
112
UBS O'Connor
Illinois
$1.41M -$595K -5,685 -30%
AG
113
Algert Global
California
$1.37M -$691K -6,600 -34%
Handelsbanken Fonder
114
Handelsbanken Fonder
Sweden
$1.32M +$188K +1,800 +17%
Universal-Beteiligungs- und Servicegesellschaft
115
Universal-Beteiligungs- und Servicegesellschaft
Germany
$1.3M +$1.3M +12,421 New
CIM
116
CIM Investment Management
Pennsylvania
$1.12M +$554K +5,696 +98%
WF
117
WoodTrust Financial
Wisconsin
$1.12M -$40K -382 -3%
Balyasny Asset Management
118
Balyasny Asset Management
Illinois
$1.12M -$10.6M -100,849 -90%
Ensign Peak Advisors
119
Ensign Peak Advisors
Utah
$1.11M – – –
SCM
120
Semanteon Capital Management
Massachusetts
$1.08M +$1.08M +10,311 New
Truist Financial
121
Truist Financial
North Carolina
$1.06M -$280K -2,671 -21%
State Board of Administration of Florida Retirement System
122
State Board of Administration of Florida Retirement System
Florida
$951K – – –
AAIS
123
ABN AMRO Investment Solutions
$944K +$944K +9,017 New
ASRS
124
Arizona State Retirement System
Arizona
$938K -$9.21K -88 -1%
DT
125
Diversified Trust
Tennessee
$936K +$69.9K +668 +8%
3 4
5
6 7