US stock market ended mixed on Monday as investors chased the AI trade after a wave of billion-dollar tech deals. Nasdaq rose 0.46% to 23,834.72, the S&P 500 gained 0.17% to 6,851.97, but the Dow fell 0.48% to 47,336.68. Apple jumped 2%, Nvidia climbed 1.8%, and Tesla surged 3%, driving tech higher. Energy and industrials sank as Chevron and Boeing dropped. Yields held near 4.58%, keeping rate fears alive. Investors rotated into AI and chips, betting big on growth. The S&P 500 stays up 14% YTD, Nasdaq 22%, with AI stocks dominating November’s rally.