On Monday local time, the annual developer conference of artificial intelligence chip giant Nvidia opened in San Jose, California, USA. CEO Huang Renxun announced in a keynote speech the launch of a new flagship artificial intelligence chip, Blackwell B200. NVIDIA's stock price rose more than 4% in early trading on the 18th, but then fell to close at $884.55 per share, up 0.7%, with a total market value of $2.21 trillion. After market decline exceeded 1.7%.