Nvidia shares slumped 17% in a single day, erasing about $590 billion from the company’s market capitalization, after the Chinese AI startup claimed high performance at a lower cost. The stock has ...

The Dow Jones fell Wednesday ahead of the CPI inflation report and more testimony from Fed Chair Powell. Nvidia partner Super Micro surged.

US economists are looking for monthly headline CPI at 0.31%, which would keep the year-on-year rate at 2.9%. Core CPI is ...