【 Top 20 US Stock Turnover: NVIDIA and Microsoft Reached a New Record High 】 In second place, NVIDIA closed 2.28% higher, reaching a historic high with a transaction volume of 20.434 billion US dollars. NVIDIA will release its financial report after the close of trading on Tuesday. In third place, Microsoft closed 2.05% higher, reaching a historic high with a transaction of 19.13 billion US dollars. OpenAI founders Sam Altman and Greg Brockman will join Microsoft to help lead a newly established internal artificial intelligence (AI) development team.