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iRhythm Technologies

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.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

9% more repeat investments, than reductions

Existing positions increased: 101 | Existing positions reduced: 93

3.7% less ownership

Funds ownership: 114.56%110.86% (-3.7%)

28% less call options, than puts

Call options by funds: $27.3M | Put options by funds: $37.6M

Holders
300
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
5
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$27.3M
Puts
$37.6M
Net Calls
Net Calls Change

Top Buyers

1 +$45.9M
2 +$41.2M
3 +$39.3M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$38.2M
5
Wellington Management Group
Wellington Management Group
Massachusetts
+$35.4M

Top Sellers

1 -$107M
2 -$65.6M
3 -$50.3M
4
UBS AM
UBS AM
Illinois
-$45.5M
5
B
Braidwell
Connecticut
-$39.5M
Name Holding Trade Value Shares
Change
Change in
Stake
KCM
126
Kennedy Capital Management
Missouri
$2.44M
FCM
127
Fieldview Capital Management
Michigan
$2.39M
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
Ensign Peak Advisors
130
Ensign Peak Advisors
Utah
$2.03M
WG
131
Winton Group
United Kingdom
$1.98M
GIM
132
Granahan Investment Management
Massachusetts
$1.95M
ET
133
Entropy Technologies
New York
$1.72M
BMSSC
134
B. Metzler seel. Sohn & Co
Germany
$1.71M
WF
135
WoodTrust Financial
Wisconsin
$1.64M
Creative Planning
136
Creative Planning
Kansas
$1.61M
SCM
137
Semanteon Capital Management
Massachusetts
$1.53M
N
138
Numerai
California
$1.5M
Truist Financial
139
Truist Financial
North Carolina
$1.49M
CC
140
Centiva Capital
New York
$1.48M
SSA
141
Schonfeld Strategic Advisors
New York
$1.46M
ONGA
142
O'Neil Global Advisors
California
$1.41M
ASRS
143
Arizona State Retirement System
Arizona
$1.41M
Handelsbanken Fonder
144
Handelsbanken Fonder
Sweden
$1.41M
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
AG
147
Ascent Group
Virginia
$1.38M
VOYA Investment Management
148
VOYA Investment Management
Georgia
$1.34M
AAIS
149
ABN AMRO Investment Solutions
$1.28M
Arrowstreet Capital
150
Arrowstreet Capital
Massachusetts
$1.28M