The U.S. government said it would require export licenses for some artificial-intelligence chips made by Nvidia and AMD. “The Commerce Department is issuing new export licensing requirements on the NVIDIA H20,

The U.S. Commerce Department said on Tuesday it was issuing new export licensing requirements for Nvidia's H20, AMD's MI308 artificial intelligence chips, as well as their equivalents, to China.

Futures are pointing to a lower open for major indexes on Wednesday as chip stocks slide amid concerns about export restrictions to China.