Stock Market Today: Stay ahead of the game with the latest updates on Dow Jones, Nasdaq, and S&P 500 as markets react to major developments. From UnitedHealth’s stock plunge amid a DOJ probe to Alibaba’s rally fueled by GameStop CEO Ryan Cohen’s investment, big moves are shaping the day. Tesla’s potential Nissan investment and Celsius’ market surge add to the excitement. Get all the essential insights before the opening bell.