iRhythm Holdings, Inc.

iRhythm Holdings, Inc. is a digital healthcare company headquartered in San Francisco, California, dedicated to creating trusted solutions that detect, predict, and prevent cardiac diseases. The company's mission is to deliver better data, better insights, and better health for all through its innovative approach to cardiac monitoring.

The company's core offerings revolve around its Zio platform, which combines wearable biosensors, cloud-based data analytics, and proprietary algorithms to distill millions of heartbeats into clinically actionable information. Key products include the Zio Monitor System for continuous ECG monitoring, Zio AT for real-time arrhythmia detection, and ZioSuite, a web portal and mobile application for comprehensive patient management and reporting. iRhythm provides an end-to-end ambulatory cardiac monitoring service, leveraging FDA-cleared AI algorithms and expert clinical review.

In recent news, iRhythm disclosed a cyberattack in June 2026, which resulted in the theft of data from third-party applications. The company reported strong financial results for Q1 2026, with revenue increasing by 25.7% year-over-year, and subsequently raised its 2026 guidance. Leadership includes President and CEO Quentin Blackford. iRhythm continues to expand its global footprint, having launched its Zio system in Japan in 2024 and extended operations into several European countries in 2025.