Arm's stock suffers its worst day on record as AI euphoria cools

Arm Holdings PLC’s blockbuster stock rally cooled Tuesday, as shares logged their worst daily performance on record. The stock ARM, -19.46% closed down more than 19% in Tuesday trading, which made for its largest single-day percentage loss in the five months since the company went public again. Arm shares previously had yet to record a single-session double-digit percentage decline. See also: Arm’s Thursday stock surge burns short sellers, to the tune of $445 million in paper losses Arm’s stock nearly doubl ...