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Oct. 30, 2026 at 8:02pm ET

Stock Market News From Oct. 30, 2026: AI Selloff Goes From Bad to Worse in Market's Biggest Loss Since June

The Nasdaq, S&P 500, and Dow were deep in the red. Investors were rushing to get out of Big Tech and into more defensive areas of the market.

10 hours ago

By

Naomi Buchanan

,

Reporter

The stock market closed out October on a sour note after the AI selloff ramped up.

The Nasdaq Composite dove 2.8% in its biggest one day decline since June. The tech-heavy index ended the month lower.