Microsoft shares once again surpass $4 trillion valuation, joining Nvidia

Core Insights - Microsoft Corp. has surpassed a $4 trillion valuation, joining Nvidia in a select group of companies with such high market capitalization, which briefly included Apple [1][3] - The surge in valuations reflects the intense investor interest in artificial intelligence technologies [1] Company Developments - OpenAI has restructured its ownership, becoming a public benefit corporation, with no opposition from Delaware and California attorneys general [2] - Microsoft has secured a new agreement with OpenAI, acquiring approximately a 27% stake in OpenAI's new for-profit entity [2] Market Reactions - Following the news, Microsoft's stock increased by 2%, closing at $542.07, which values the company at $4.04 trillion [3] - Apple also crossed the $4 trillion mark earlier in the day, closing slightly higher at $269, resulting in a total valuation of $3.99 trillion [4]