Nvidia stock dropped 17% on Monday, Jan. 27 in an unprecedented bloodbath in the AI sector. In fact, it was the worst single-day dollar-value loss for a single stock in history, as Nvidia gave up roughly $600 billion in market cap.

Nvidia Corp.’s stock fell Monday as investors weighed the potential for tariffs to impact chip companies and continued to assess the fallout from DeepSeek. Shares of Nvidia NVDA slid 2.8% to rank among the worst performers in the PHLX Semiconductor Index SOX.