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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 %
Point72 Asset Management
26
Point72 Asset Management
Connecticut
$49.6M 322,098 -98,205 -23%
Holocene Advisors
27
Holocene Advisors
New York
$48.2M 313,094 +298,347 +2,023%
B
28
Braidwell
Connecticut
$46.2M 300,029 -256,362 -46%
Jennison Associates
29
Jennison Associates
New York
$45.8M 297,492 +17,305 +6%
SEI Investments
30
SEI Investments
Pennsylvania
$44.7M 290,634 -22,128 -7%
Westfield Capital Management
31
Westfield Capital Management
Massachusetts
$44.7M 290,570 -326,508 -53%
Northern Trust
32
Northern Trust
Illinois
$44.5M 289,317 -2,692 -0.9%
Lord, Abbett & Co
33
Lord, Abbett & Co
New Jersey
$44.3M 287,476 +28,848 +11%
Charles Schwab
34
Charles Schwab
California
$41.8M 271,467 +16,888 +7%
Man Group
35
Man Group
United Kingdom
$41.2M 267,603 +267,603 New
Loomis, Sayles & Company
36
Loomis, Sayles & Company
Massachusetts
$39.3M 255,517 +255,517 New
D.E. Shaw & Co
37
D.E. Shaw & Co
New York
$38.2M 247,836 +247,836 New
RSCM
38
Rock Springs Capital Management
Maryland
$37.3M 242,500 -11,800 -5%
NCGI
39
Next Century Growth Investors
Minnesota
$34.6M 224,863 +16,643 +8%
Barclays
40
Barclays
United Kingdom
$33.1M 215,289 +14,807 +7%
NL
41
Nuveen LLC
North Carolina
$32.9M 214,012 +121,283 +131%
Manulife (Manufacturers Life Insurance)
42
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$30.1M 195,642 -716 -0.4%
Deutsche Bank
43
Deutsche Bank
Germany
$29.6M 192,190 -12,725 -6%
FLAM
44
First Light Asset Management
Minnesota
$28.8M 187,355 -137,691 -42%
OAM
45
Ophir Asset Management
Australia
$28.3M 202,084 -175,598 -46%
BNP Paribas Financial Markets
46
BNP Paribas Financial Markets
France
$28.2M 183,257 +179,779 +5,169%
Morgan Stanley
47
Morgan Stanley
New York
$27.4M 177,898 -54,771 -24%
New York State Common Retirement Fund
48
New York State Common Retirement Fund
New York
$26.2M 170,013 +9,127 +6%
Citigroup
49
Citigroup
New York
$25.7M 166,744 -18,398 -10%
DCM
50
Driehaus Capital Management
Illinois
$24.9M 161,646 +161,646 New
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