IRhythm (IRTC) reported a Q1 adjusted loss late Thursday of $0.35 per diluted share, narrowing from a loss of $0.95 a year earlier.
Analysts polled by FactSet expected a loss of $0.62.
Revenue for the quarter ended March 31 rose to $199.4 million from $158.7 million a year earlier.
Analysts surveyed by FactSet expected $194.1 million.
The company raised its 2026 revenue guidance to $875 million to $885 million from the prior forecast of $870 million and $880 million. Analysts expect $876.2 million.