美股半导体股盘前多数下跌，英伟达跌超6%

Core Viewpoint - Semiconductor stocks in the U.S. are mostly down in pre-market trading, with Nvidia experiencing a decline of over 6% due to anticipated inventory and related costs of $5.5 billion for the first fiscal quarter related to H20 products [1] Group 1: Company Performance - Nvidia's stock fell more than 6% as the company expects $5.5 billion in inventory, purchase commitments, and related reserve costs for the first fiscal quarter [1] - Advanced Micro Devices (AMD) also saw a decline of over 6% in its stock price [1] - ASML's stock dropped by more than 5% [1]