PALO ALTO, U.S./TAIPEI -- Nvidia and other chip stocks fell across the board on Tuesday after the U.S. announced a new round of restrictions aimed at thwarting China's access to advanced artificial intelligence chips and leading-edge semiconductor production equipment.

The new export restrictions , released by the U.S. Department of Commerce, tightened definitions for advanced AI chips and added preventive measures such as additional licensing requirements for shipments to 40-plus countries to avoid resales to China.