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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 %
RG
301
Redmile Group
California
– – -56,844 Closed
CCM
302
Cinctive Capital Management
New York
– – -37,260 Closed
DAM
303
DLD Asset Management
New York
– – -21,960 Closed
JFG
304
Jefferies Financial Group
New York
– – -21,844 Closed
BHCM
305
Brevan Howard Capital Management
Jersey
– – -17,122 Closed
CF
306
Corebridge Financial
Texas
– – -15,316 Closed
RMP
307
Richards, Merrill & Peterson
Washington
– – -1,025 Closed
WSFS
308
Wilmington Savings Fund Society
Delaware
– – -600 Closed
BAMF
309
BI Asset Management Fondsmaeglerselskab
Denmark
– – -476 Closed
CCM
310
Coldstream Capital Management
Washington
– – -127 Closed
BTI
311
Blue Trust Inc
Georgia
– – -112 Closed
HCM
312
Hollencrest Capital Management
California
– – -108 Closed
QL
313
Quarry LP
New York
– – -69 Closed
Northwestern Mutual Wealth Management
314
Northwestern Mutual Wealth Management
Wisconsin
– – -67 Closed
CIAM
315
Caitong International Asset Management
Hong Kong
– – -25 Closed
CWC
316
Carolinas Wealth Consulting
North Carolina
– – -14 Closed
SC
317
Stephens Consulting
Michigan
– – -10 Closed
WWM
318
Wolff Wiese Magana
California
– – -5 Closed
AWM
319
Activest Wealth Management
Florida
– – -3 Closed
Simplex Trading
320
Simplex Trading
Illinois
– – – –
Walleye Trading
321
Walleye Trading
New York
– – – –
WAM
322
Wolverine Asset Management
Illinois
– – – –
Wolverine Trading
323
Wolverine Trading
Illinois
– – – –
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