iRhythm Holdings, Inc.

IRTC

Exchange: Nasdaq
Industry: Surgical & Medical Instruments & Apparatus
SEC CIK: 0001388658

SEC filings (opens in a new tab)

In the last 90 days, iRhythm Holdings, Inc. insiders filed 0 open-market purchases and 11 sales; 304 institutions reported holding it in 13F filings for Q2 2026, worth $4.24B in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding iRhythm Holdings, Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025 All holders in Q2 2025

13F holders of IRTC: Q2 2025 compared with Q3 2025
Measure	Q2 2025	Of which not filed for Q3 2025	Q3 2025	Change
Holders	304	1	338	+35
Shares	35.4M	3.93K	34.7M	−681.3K (−1.9%)
Value	$5.44B	$605.1K	$5.97B	+$525.9M (+9.7%)

1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (63)

Institutions that held iRhythm Holdings, Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to IRTC in Q3 2025
Institution	Shares	Value	% of portfolio
Jain Global LLC	131,092	$22.5M	0.29%
Perceptive Advisors LLC	123,000	$21.2M	0.61%
Assenagon Asset Management S.A.	77,876	$13.4M	0.02%
Steadfast Capital Management LP	39,700	$6.83M	0.12%
1832 Asset Management L.P.	28,200	$4.85M	0.01%
Cinctive Capital Management LP	28,044	$4.82M	0.24%
Ossiam	27,100	$4.66M	0.06%
Voloridge Investment Management, LLC	19,142	$3.29M	0.01%
Deerfield Management Company, L.P. (Series C)	17,262	$2.97M	0.05%
Lisanti Capital Growth, LLC	16,830	$2.89M	0.71%
Baird Financial Group, Inc.	13,290	$2.29M	0.00%
Williamson Legacy Group, LLC	7,651	$1.32M	1.02%
Calamos Advisors LLC	7,494	$1.29M	0.01%
Rhenman & Partners Asset Management AB	7,000	$1.20M	0.13%
CWM Advisors, LLC	6,055	$1.04M	0.10%
Dimensional Fund Advisors LP	5,387	$926.5K	0.00%
Bayesian Capital Management, LP	4,386	$754.3K	0.15%
Two Sigma Securities, LLC	3,588	$617.1K	0.09%
CIBC Bancorp USA Inc.	3,400	$584.8K	0.00%
Legato Capital Management LLC	3,135	$539.2K	0.06%
Counterpoint Mutual Funds LLC	2,900	$498.8K	0.04%
Los Angeles Capital Management LLC	2,883	$495.8K	0.00%
Dark Forest Capital Management LP	2,833	$487.2K	0.02%
Allianz Asset Management GmbH	2,500	$430.0K	0.00%
Voleon Capital Management LP	2,192	$377.0K	0.01%
Inceptionr LLC	2,011	$345.9K	0.08%
State of Alaska, Department of Revenue	2,002	$344.0K	0.00%
Prelude Capital Management, LLC	1,671	$287.4K	0.02%
China Universal Asset Management Co., Ltd.	1,600	$275.2K	0.02%
RWC Asset Management LLP	1,595	$274.3K	0.01%
Brevan Howard Capital Management LP	1,588	$273.1K	0.00%
CI Private Wealth, LLC	1,573	$270.5K	0.00%
Swiss Life Asset Management Ltd	1,461	$251.3K	0.00%
Bridgefront Capital, LLC	1,383	$237.9K	0.07%
EntryPoint Capital, LLC	1,299	$223.4K	0.09%
Quantinno Capital Management LP	1,298	$223.2K	0.00%
Stifel Financial Corp	1,297	$223.1K	0.00%
111 Capital	1,272	$218.8K	0.04%
Marshall Wace, LLP	1,263	$217.2K	0.00%
Vise Technologies, Inc.	1,261	$216.9K	0.01%
Picton Mahoney Asset Management	1,250	$215.0K	0.00%
Stratos Wealth Partners, LTD.	1,203	$206.9K	0.00%
Walleye Trading LLC	967	$166.3K	0.00%
Rockefeller Capital Management L.P.	717	$123.3K	0.00%
Skandinaviska Enskilda Banken AB (publ)	589	$101.3K	0.00%
Harvest Fund Management Co., Ltd	402	$69.0K	0.00%
Point72 Europe (London) LLP	377	$64.8K	0.00%
Simplex Trading, LLC	362	$62.0K	0.00%
Employees Retirement System of Texas	209	$36.0K	0.00%
Optiver Holding B.V.	204	$35.1K	0.00%
FNY Investment Advisers, LLC	200	$34.0K	0.01%
Root Financial Partners, LLC	176	$30.3K	0.00%
Measured Wealth Private Client Group, LLC	175	$30.1K	0.01%
SRS Capital Advisors, Inc.	132	$22.7K	0.00%
Innovative Advisory Group, LLC	60	$10.3K	0.01%
Accent Capital Management, LLC	50	$8.60K	0.00%
Halbert Hargrove Global Advisors, LLC	18	$3.10K	0.00%
Rakuten Securities, Inc.	18	$3.10K	0.00%
Advisory Services Network, LLC	6	$1.03K	0.00%
Sunbelt Securities, Inc.	4	$688	0.00%
True Wealth Design, LLC	3	$516	0.00%
Wealthspire Advisors, LLC	1	$172	0.00%
Caitong International Asset Management Co., Ltd	1	$172	0.00%

Sold out (28)

Institutions that held iRhythm Holdings, Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of IRTC in Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Freestone Grove Partners LP	154,317	$23.8M
Susquehanna International Group, LLP	64,668	$9.96M
Balyasny Asset Management LLC	44,713	$6.88M
Natixis	23,500	$3.62M
XTX Topco Ltd	16,504	$2.54M
Kennedy Capital Management, Inc.	15,844	$2.44M
Winton Group Ltd	12,877	$1.98M
Semanteon Capital Management, LP	9,951	$1.53M
Centiva Capital, LP	9,622	$1.48M
UBS Oconnor LLC	7,993	$1.23M
Scientech Research LLC	6,465	$995.4K
Group One Trading, L.P.	5,450	$839.1K
Bryce Point Capital, LLC	4,860	$748.2K
R Squared Ltd	2,621	$403.5K
Corton Capital Inc.	2,223	$342.3K
Petrus Trust Company, LTA	1,792	$275.9K
Aigen Investment Management, LP	1,686	$259.6K
Moody National Bank Trust Division	1,602	$246.6K
Pictet & Cie (Europe) SA	1,542	$237.4K
Atria Investments LLC	1,300	$200.1K
Raiffeisen Bank International AG	680	$104.7K
Skopos Labs, Inc.	100	$15.4K
Geneos Wealth Management Inc.	24	$3.69K
Kestra Investment Management, LLC	28	$3.62K
Toronto Dominion Bank	20	$3.08K
South State Corp.	14	$2.16K
UMA Financial Services, Inc.	3	$462
Twin Peaks Wealth Advisors, LLC	2	$325

Not filed for Q3 2025 yet (1)

Institutions that held iRhythm Holdings, Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding IRTC in Q2 2025 that haven't filed for Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
CIBC World Markets Corp	3,930	$605.1K