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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 %
CSS
76
Cubist Systematic Strategies
Connecticut
$4.58M +$4.58M +43,717 New
Legal & General Group
77
Legal & General Group
United Kingdom
$4.49M -$211K -2,015 -4%
SFI
78
Susquehanna Fundamental Investments
Pennsylvania
$4.44M +$57.6K +550 +1%
CCM
79
Cinctive Capital Management
New York
$3.9M +$3.05M +29,119 +358%
AllianceBernstein
80
AllianceBernstein
Tennessee
$3.86M -$300K -2,870 -7%
Envestnet Asset Management
81
Envestnet Asset Management
Illinois
$3.75M +$2.04M +19,447 +119%
Mirae Asset Global ETFs Holdings
82
Mirae Asset Global ETFs Holdings
Hong Kong
$3.69M +$96.5K +922 +3%
EAM
83
EFG Asset Management
Oregon
$3.64M +$667K +6,378 +22%
First Trust Advisors
84
First Trust Advisors
Illinois
$3.54M +$3.54M +33,860 New
HA
85
Homestead Advisers
Virginia
$3.39M +$450K +4,300 +15%
Squarepoint
86
Squarepoint
New York
$3.14M +$805K +7,694 +35%
California State Teachers Retirement System (CalSTRS)
87
California State Teachers Retirement System (CalSTRS)
California
$3.02M -$41.9K -400 -1%
MSK
88
Melissa S. Kampmann
$2.62M +$115K +1,100 +5%
FCM
89
Fieldview Capital Management
Michigan
$2.53M +$2.53M +24,203 New
Wells Fargo
90
Wells Fargo
California
$2.51M +$316K +3,021 +14%
T. Rowe Price Associates
91
T. Rowe Price Associates
Maryland
$2.4M +$216K +2,059 +10%
Invesco
92
Invesco
Georgia
$2.33M +$316K +3,016 +16%
Renaissance Technologies
93
Renaissance Technologies
New York
$2.31M +$2.31M +22,100 New
DAM
94
DLD Asset Management
New York
$2.3M -$1.28M -12,240 -36%
JFG
95
Jefferies Financial Group
New York
$2.29M +$2.29M +21,844 New
Russell Investments Group
96
Russell Investments Group
United Kingdom
$2.18M -$148K -1,418 -6%
TI
97
Trexquant Investment
Connecticut
$2.18M +$2.18M +20,791 New
MOACM
98
Mutual of America Capital Management
New York
$2.17M +$7.22K +69 +0.3%
HP
99
HealthInvest Partners
Sweden
$2.15M +$2.15M +20,547 New
BMSSC
100
B. Metzler seel. Sohn & Co
Germany
$2.15M – – –
2 3
4
5 6