AI Stocks Today: Nvidia, Micron, AMD, Microsoft and Oracle in Focus as U.S. Futures Turn Mixed in Friday Premarket (Dec. 19, 2025)
U.S. AI stocks are back in the spotlight heading into Friday’s opening bell, with premarket sentiment balancing two powerful forces: (1) a renewed “AI infrastructure” bid after Micron’s blockbuster outlook, and (2) policy and financing crosswinds—from chip export rules to mega–data center funding—still hanging over the sector. As of Friday, December 19, 2025, broader U.S. equity futures were mixed, with S&P 500 and Nasdaq futures pointing higher while Dow futures lagged, reflecting ongoing rotation into growth and tech after this week’s volatility. Barron’s Below is what’s driving the AI stock trade in today’s U.S. premarket, the fresh news flow dated