November 5 Selloff: AI Fears Hit Stocks. What I'd Do Next

The Nasdaq lost about 5.5% on Thursday, November 5. The S&P 500 fell roughly 4.4%, and the Dow dropped about 3.4%. Nvidia fell around 9%, while the Philadelphia semiconductor index plunged about 12%. Those rounded closing figures come from Reuters’ end-of-day market analysis, syndicated by Global Banking & Finance Review. The selling started with a specific worry: investors were reassessing how quickly the AI infrastructure boom could keep growing after this week’s Democratic election victories. It spread well beyond chipmakers. All 11 S&P 500 sectors finished lower, according to Reuters. ...

November 5, 2026 · 9 min · Juliana