U.S. stock markets are experiencing significant gains as oil prices decline and artificial intelligence (AI) stocks rally. The Nasdaq and S&P 500 are within 1% of their record highs, with the S&P 500 rising by 1% thanks to a surge in AI-related stocks. Wall Street is buoyed by expectations surrounding the upcoming Trump-Xi summit and positive news from U.S.-China talks, contributing to investor optimism. Meanwhile, crude oil prices have seen a notable drop, easing inflation concerns and allowing stocks to climb worldwide. The rally in tech stocks, combined with falling Treasury yields, has set a positive tone for the markets as they open higher ahead of key economic events.