On Monday, U.S. stock index futures continued to rise slightly after rising last week on bets that U.S. interest rates have peaked, according to Yahoo News. Meanwhile, Microsoft outperformed other large-cap stocks driven by the news that former OpenAI head Sam Altman joined the company. Microsoft CEO Satya Nadella said Altman will join the tech giant to lead a new advanced AI research team, and Microsoft shares rose 2.4% in pre-market trading. Other large-cap stocks performed mixed, with Nvidia rising 0.6% and Google parent Alphabet falling 1.1%.