US Stock Market Today (Dec. 17, 2025): S&P 500 and Nasdaq Sink as AI-Funding Jitters Hit Tech; Oil Rally Lifts Energy
Updated: December 17, 2025, 4:40 PM EST Wall Street ended sharply lower Wednesday as the market’s leadership trade—artificial intelligence—took another hit, dragging big tech, chips, and cloud-linked names down to their weakest levels in weeks. The selling pressure pushed the S&P 500