Wall Street has long awaited a transformative innovation akin to the internet's impact on corporate America in the '90s, and artificial intelligence (AI) seems to fulfill that promise. AI's ability to autonomously enhance its performance and learn new skills holds vast potential, with PwC analysts predicting a $15. 7 trillion boost to the global economy by 2030 through efficiency and consumption enhancements. Despite Nvidia's (NVDA) significant gains from the AI boom, including a market cap increase of nearly $3. 2 trillion and a dominant position in AI graphics processing units (GPUs), several billionaires have sold off their Nvidia shares, favoring two alternative AI stocks. Key sellers of Nvidia during the June quarter include prominent investors like Jeff Yass and Ken Griffin, indicating that profit-taking might be a reason behind this trend. Additionally, regulatory constraints on exports to China and a lack of insider buying raise concerns about Nvidia's future growth and competitive edge. Two AI stocks that billionaire money managers have chosen over Nvidia are Super Micro Computer (SMCI) and Microsoft (MSFT).

Super Micro, a provider of customizable server solutions, has seen substantial sales growth and is positioned to benefit from the increasing demand for data-center infrastructure amid the AI revolution. However, concerns about accounting practices and reliance on Nvidia's GPUs pose risks. Microsoft, one of only three $3 trillion companies, has also attracted billionaire investment due to its strategic integration of AI into services like Bing and Azure, enhancing its cloud offerings. MSFT's strong cash flow and ability to weather potential market fluctuations make it a safe bet amid AI's rapidly evolving landscape. Overall, while Nvidia has been a major player in AI, the cautious moves of billionaire investors highlight concerns about its sustainability and pave the way for growth opportunities in Super Micro and Microsoft.