One chip earnings report can now move markets across three continents overnight. Here is how concentrated the AI trade has become, and why it matters.

U.S. and global tech stocks fell, led by AI giants amid valuation and bubble concerns.

Economists warn the narrow growth will leave sectors including construction, retail, services and small businesses struggling to keep pace.

Shares of chipmakers plunged in value worldwide on Tuesday.

Technology stocks experienced a significant downturn, pulling major indices lower as a sharp selloff in Korean chipmakers raised concerns about the sustainability of the AI-driven…