Quantum computing stocks are tumbling after Nvidia CEO Jensen Huang warned that the technology is a long way off.

The quantum computing rally came to an abrupt end on Wednesday following comments from Nvidia CEO Jensen Huang. During a question-and-answer session with analysts, Huang put forth a more pessimistic view of the quantum computing timeline:

Rigetti Computing, IonQ, and other quantum stocks plunged after Nvidia CEO Jensen Huang told Wall Street analysts that “very useful quantum computers” are likely 20 years 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.

Wave fell sharply after Nvidia’s Jensen Huang said that “very simple quantum computers” could be 20 years away.

Quantum computing stocks like IonQ, Rigetti Computing, D-Wave Quantum, and Quantum Computing were each down by more than a whopping 40% after Nvidia chief Jensen Huang’s comments that he did not expect quantum computers to be a reality any time soon.