Wall Street’s superstars are tumbling Monday as a competitor from China threatens to upend the artificial-intelligence frenzy ...

Chip giant Nvidia ( NVDA) was more than 11% lower in the first hour of US trading. Industry peer ASML ( ASML) lost 8%, while Arm ( ARM ), Broadcom ( AVGO ), and Micron Technology ( MU) also got ...

Wall Street is tumbling Monday on fears that the market's winners who have feasted on the AI frenzy are under threat from a ...