Nvidia shares climbed Wednesday after CEO Jensen Huang said in an interview with CNBC that AI demand is up "substantially" this year. LONG WEI / Feature China / Future Publishing / Getty Images Key Takeaways Major U.S. equities indexes climbed Wednesday as enthusiasm for artificial intelligence stocks boosted the tech sector. The Dow, S&P 500, and Nasdaq all gained. Published October 08, 2025 01:28 PM EDT Do you have a news tip for Investopedia reporters? Please email us at [email protected] Nvidia (NVDA) ...