The three major US stock indexes rebounded from a cautious start to close at fresh record highs on Monday, as President Trump said talks with Iran were continuing at a rapid pace, while a resurgence in AI-related stocks also boosted investor sentiment. The S&P 500 gained 0.3%, the Nasdaq advanced 0.4%, and the Dow Jones added 46 points. Technology stocks led the rally, with Nvidia surging 6.3% after unveiling its new RTX Spark Superchip, marking its entry into the PC market. Optimism surrounding Nvidia's latest offering boosted software and hyperscaler stocks, with Microsoft rising 2.3% and Oracle jumping 9.9%. The positive spillover also lifted hardware-related names, as Micron Technology and Dell Technologies climbed 6.6% and 10.8%, respectively. Meanwhile, IBM soared 7.6% after the resurgence of footage showing President Trump saying the stock has a "nice price". Energy shares also traded higher amid rising oil prices, with Exxon Mobil gaining 2.5% and Chevron advancing 1.9%.