Chinese startup DeepSeek’s eponymous AI assistant rocketed to the top of Apple Inc.’s iPhone download charts, stirring doubts in Silicon Valley about the strength of America’s lead in AI.
Wall Street is nervous about what DeepSeek's success means for companies like Nvidia Corp. (NVDA), Broadcom Inc. (AVGO), Marvell Technology Inc. (MRVL) and others that have seen their stocks run up on ...