iRhythm Holdings, Inc.
iRhythm Holdings (Nasdaq: IRTC) provides ambulatory cardiac monitoring services that help physicians detect and diagnose arrhythmias. Its systems pair a wearable, wire-free ECG patch that records heart activity continuously for up to 14 days with cloud-based analytics and technician-reviewed reports. The company… From the company’s description.
Over the twelve months to Sep 30, 2026, iRhythm Holdings, Inc. reported revenue of $854.04M, up 21.6% from a year earlier, and a net loss of $38.59M. Its operating margin was −5.7%, and operations generated $55.56M in cash. In fiscal 2025, it reported revenue of $747.14M, up 26.2% from fiscal 2024, and a net loss of $44.55M.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What iRhythm Holdings, Inc. does
In the company’s own words
iRhythm Holdings (Nasdaq: IRTC) provides ambulatory cardiac monitoring services that help physicians detect and diagnose arrhythmias. Its systems pair a wearable, wire-free ECG patch that records heart activity continuously for up to 14 days with cloud-based analytics and technician-reviewed reports. The company offers long-term continuous monitoring and mobile cardiac telemetry, primarily for patients with suspected intermittent or hard-to-detect arrhythmias; customers include physician practices, hospitals and health systems, and risk-bearing care organizations. Its Zio offerings include the Zio monitor, Zio XT and Zio AT systems, supported by the ZioSuite clinician portal and related digital tools. iRhythm operates as one business, providing services through its Medicare-enrolled independent diagnostic testing facilities, with the United States as its primary market and commercial operations in the United Kingdom, selected European countries and Japan. In fiscal 2025, it employed approximately 2,400 regular full-time employees and had provided more than 12 million patient reports since its technology received its first FDA clearance in 2009. Its website is https://www.irhythmtech.com.
Company details
- Sector
- Health Care
- Industry (SIC)
- Surgical & Medical Instruments
- Headquarters
- San Francisco, CA
- Fiscal year end
- December
- CIK
- 1388658
- SIC
- 3841
Financial performance, year by year
Fiscal 2016–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns iRhythm Holdings, Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · iRhythm Holdings, Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
iRhythm Holdings, Inc.’s bonds, as funds hold them
Funds report holding 1 issues of iRhythm Holdings, Inc.’s debt, $75.16M at market value — what funds hold, not the company’s total debt. Weighted-average coupon 1.50%, maturing 2029 to 2029.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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