Shares of leading firms nose-dive after Nvidia’s Jensen Huang suggests a generational wait for fully functional quantum tech. We’ve been told that the future is now, but it seems it’s not quite here yet—at least not for quantum computing.

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.

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

Nvidia CEO's comments on quantum computing caused a market drop, erasing $8 billion from companies like IonQ, Rigetti, and D-Wave. Huang suggested useful quantum computing may be 15-30 years away. D-Wave's CEO disagreed,

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.