2025 -The S&P 500 and Nasdaq kicked off November on firmer ground on Monday, after a slew of AI deals boosted megacap companies Amazon and Nvidia, while Kenvue shares soared after Kimberly-Clark's buyout deal. Amazon.com hit a record high after signing a multi-year $38 billion deal to supply cloud computing services to OpenAI, giving the ChatGPT maker access to Nvidia's graphics processors. Nvidia gained 2.5% after President Donald Trump said the company's most advanced chips will be reserved for U.S. companies and Microsoft secured export licenses to use its chips in UAE data centers.