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iRhythm Technologies
IRTC

Overview Fund Activity

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
Holders
300
Holders Change
+45
Holders Change %
+17.65%
% of All Funds
4.02%
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
101
Reduced
93
Closed
22
Calls
$27.3M
Puts
$37.6M
Net Calls
-$10.3M
Net Calls Change
-$787K

Top Buyers

1
Holocene Advisors
Holocene Advisors
New York
$48.2M
2
Man Group
Man Group
United Kingdom
$41.2M
3
Loomis, Sayles & Company
Loomis, Sayles & Company
Massachusetts
$39.3M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
$38.2M
5
Wellington Management Group
Wellington Management Group
Massachusetts
$60.9M

Top Sellers

1
Capital Research Global Investors
Capital Research Global Investors
California
$232M
2
Mackenzie Financial
Mackenzie Financial
Ontario, Canada
$112M
3
Westfield Capital Management
Westfield Capital Management
Massachusetts
$44.7M
4
UBS AM
UBS AM
Illinois
$93.6M
5
B
Braidwell
Connecticut
$46.2M
Name Holding Trade Value Shares
Change 		Shares
Change %
TFM
301
TFC Financial Management
Massachusetts
$154 +$154 +1 New
SPC
302
Slate Path Capital
New York
– -$38.3M -365,400 Closed
AIMCA
303
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
– -$15.2M -145,166 Closed
RG
304
Redmile Group
California
– -$5.95M -56,844 Closed
CCM
305
Cinctive Capital Management
New York
– -$3.9M -37,260 Closed
DAM
306
DLD Asset Management
New York
– -$2.3M -21,960 Closed
JFG
307
Jefferies Financial Group
New York
– -$2.29M -21,844 Closed
BHCM
308
Brevan Howard Capital Management
Jersey
– -$1.79M -17,122 Closed
CF
309
Corebridge Financial
Texas
– -$1.6M -15,316 Closed
RMP
310
Richards, Merrill & Peterson
Washington
– -$107K -1,025 Closed
WSFS
311
Wilmington Savings Fund Society
Delaware
– -$62.8K -600 Closed
BAMF
312
BI Asset Management Fondsmaeglerselskab
Denmark
– -$50K -476 Closed
CCM
313
Coldstream Capital Management
Washington
– -$13.3K -127 Closed
BTI
314
Blue Trust Inc
Georgia
– -$11.7K -112 Closed
HCM
315
Hollencrest Capital Management
California
– -$11.3K -108 Closed
QL
316
Quarry LP
New York
– -$7.22K -69 Closed
Northwestern Mutual Wealth Management
317
Northwestern Mutual Wealth Management
Wisconsin
– -$7.01K -67 Closed
CIAM
318
Caitong International Asset Management
Hong Kong
– -$2.62K -25 Closed
CWC
319
Carolinas Wealth Consulting
North Carolina
– -$1.48K -14 Closed
SC
320
Stephens Consulting
Michigan
– -$1.05K -10 Closed
WWM
321
Wolff Wiese Magana
California
– -$524 -5 Closed
AWM
322
Activest Wealth Management
Florida
– -$314 -3 Closed
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