Arm Stock Soars 20% on AI-Powered Earnings Beat and Annual Guidance Raise

Shares of Arm Holdings (ARM 5.52%) soared 19.9% in Wednesday's after-hours trading following the release of a strong fiscal third-quarter report for the leading designer of central processing unit (CPU) chips. Investors' collective delight is attributable to the quarter's revenue and earnings handily beating Wall Street's consensus estimates, along with management raising its guidance for the full fiscal year to levels solidly above analysts' expectations.As background, the U.K.-based company held its initi ...