Wall Street indexes were mixed on Thursday as fresh worries about an AI-driven market bubble outweighed Nvidia’s strong results. At around 9:35 pm IST, the S&P 500 was down 0.1% and the Nasdaq slipped 0.4%, while the Dow rose 0.5%. Nvidia beat quarterly estimates and issued a stronger-than-expected forecast after reporting a sharp 73% jump in Q4 revenue, but tech shares still stayed under pressure.