Stock market today: Nasdaq clobbered, Nvidia sinks 17% while Dow stages comeback as AI fears shake markets

The Nasdaq tanked on Monday as a Chinese startup rattled faith in US leadership and profitability in AI, taking a hammer to Nvidia (NVDA), wiping out a record $589 billion in market value.

The Nasdaq Composite (^IXIC) sank more than 3%, while…