President Donald Trump has threatened to impose tariffs on Taiwan-made chips, which could hit Nvidia, one of TSMC's biggest customers.

The tariffs would ensnare cutting-edge smartphone and PC-related chips for Apple, AMD and Nvidia if enacted. But Trump is betting his plan will bring more chip production to the US.

The success of a mysterious Chinese lab has investors questioning the AI spending boom that has swept through Silicon Valley.

KEY TAKEAWAYS A slew of artificial intelligence stocks, including chip maker Nvidia, are tumbling in premarket trading Monday after Chinese startup DeepSeek released a cutting-edge AI model that runs on less-advanced chips and at a lower cost than U.

Panic is hitting Wall Street on Monday morning, with major semiconductor stocks like Nvidia (NVDA) and Broadcom (AVGO) down more than 10%. The reason for the chaos is DeepSeek, a new artificial intelligence (AI) model released by a Chinese startup.