The U.S. stock market is experiencing a dynamic Monday, October 6th, 2025, afternoon trading session, largely driven by a significant artificial intelligence partnership and sustained investor optimism, even as a government shutdown continues to cast a shadow over economic data releases. Major indexes are showing mixed to strong performance, with the tech-heavy Nasdaq Composite (IXIC) leading the charge to new all-time highs.Major Index PerformanceAs afternoon trading progresses, the S&P 500 (SPX) is extend ...