OpenAI and Advanced Micro Devices have reached a deal that could see Sam Altman's company take a 10% stake in the chipmaker.AMD stock skyrocketed more than 25% on Monday during premarket trading following the news.OpenAI will deploy 6 gigawatts of AMD's Instinct graphics processing units over multiple years and across multiple generations of hardware, the companies said Monday. It will kick off with an initial 1-gigawatt rollout of chips in the second half of 2026.Tune in at 9:30 a.m. ET as Open...