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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 %
State of Wisconsin Investment Board
76
State of Wisconsin Investment Board
Wisconsin
$10.5M 68,475 -6,565 -9%
TI
77
Trexquant Investment
Connecticut
$10M 65,217 +44,426 +214%
JF
78
Jump Financial
Illinois
$9.67M 62,795 +62,795 New
Swiss National Bank
79
Swiss National Bank
Switzerland
$9.24M 60,000 -700 -1%
Victory Capital Management
80
Victory Capital Management
Texas
$9.22M 59,899 +56,210 +1,524%
Macquarie Group
81
Macquarie Group
Australia
$8.86M 57,523 +2,606 +5%
Amundi
82
Amundi
France
$8.65M 60,608 -35,246 -37%
First Trust Advisors
83
First Trust Advisors
Illinois
$8.65M 56,197 +22,337 +66%
Connor, Clark & Lunn Investment Management (CC&L)
84
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$8.3M 53,926 +53,926 New
PD
85
Point72 (DIFC)
United Arab Emirates
$7.7M 50,000 -22,129 -31%
SAM
86
Silvercrest Asset Management
New York
$7.56M 49,123 -45,758 -48%
RhumbLine Advisers
87
RhumbLine Advisers
Massachusetts
$7.46M 48,477 +2,531 +6%
Federated Hermes
88
Federated Hermes
Pennsylvania
$7.46M 48,424 +48,424 New
CM
89
Castleark Management
Illinois
$7.42M 48,180 -110 -0.2%
Qube Research & Technologies (QRT)
90
Qube Research & Technologies (QRT)
United Kingdom
$7.3M 47,425 +47,425 New
Prudential Financial
91
Prudential Financial
New Jersey
$7.06M 45,825 +43,550 +1,914%
Balyasny Asset Management
92
Balyasny Asset Management
Illinois
$6.88M 44,713 +34,060 +320%
Legal & General Group
93
Legal & General Group
United Kingdom
$6.77M 44,004 +1,093 +3%
SFI
94
Susquehanna Fundamental Investments
Pennsylvania
$6.45M 41,864 -550 -1%
IHAM
95
Integral Health Asset Management
New York
$6.16M 40,000 +40,000 New
HIM
96
Hillsdale Investment Management
Ontario, Canada
$5.77M 37,500 +37,500 New
AllianceBernstein
97
AllianceBernstein
Tennessee
$5.76M 37,394 +547 +1%
UBS Group
98
UBS Group
Switzerland
$5.43M 35,273 -147,833 -81%
EI
99
EAM Investors
California
$5.23M 33,968 +33,968 New
Envestnet Asset Management
100
Envestnet Asset Management
Illinois
$5.21M 33,809 -2,007 -6%
2 3
4
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