The shares of IonQ Inc. and other companies linked to quantum computing tumbled in extended trading on Tuesday after Nvidia Corp. Chief Executive Officer Jensen Huang said “very useful” quantum computers are likely decades away.

Quantum computing stocks sank on Wednesday, pausing a year-long rally, after Nvidia CEO Jensen Huang said the technology's practical use was likely two decades away. The long wait outlined by Huang for "very useful quantum computers" throws cold water on a sector that was already expected to spend millions more on the technology,

Nvidia’s CEO Jensen Huang unveiled new AI-driven technologies, including the GeForce RTX 50 Series GPUs featuring the Blackwell chip, and introduced the Cosmos AI models for robotics. He also announced Project DIGITS,

As head of the world’s most valuable chipmaker, Huang has an opportunity to help steer the administration’s AI policy at a moment of rapid change