Despite stringent US export restrictions, Chinese buyers have been successfully acquiring Nvidia's cutting-edge Blackwell AI chips through unofficial channels, highlighting the persistent loopholes in Washington's export control measures since 2022.

Nvidia faces continued concerns about potential restrictions on exports of its AI hardware amid reports that advanced chips are reaching China despite U.S. sanctions.

Nvidia (NVDA) stock rebounded from an early-morning slump on Tuesday as AI stocks shook off the tariff shock that sent the broader market reeling. Nvidia shares rose 1.7% Tuesday after tumbling more than 8% yesterday and trading as much as 4% lower in premarket trading today.