Key Takeaways The S&P 500 added 0.3% on Tuesday, June 18, 2024, as Nvidia grabbed headlines by surpassing Microsoft as the world's highest-valued public company. Walgreens Boots Alliance stock gained after a report highlighted its attractive dividend and the capacity of its CEO to lead a turnaround. Shares of aluminum can manufa cturer Ball Corp. tumbled amid an increase in aluminum prices. Major U.S. equities indexes ticked higher on Wednesday as artificial intelligence (AI) chip behemoth Nvidia (NVDA) ove ...