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

Quantum computing companies have surged recently but Nvidia CEO Jensen Huang had a disappointing message for the sector.

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 stocks like Rigetti, IonQ and D-Wave Quantum saw steep losses after Nvidia CEO Jensen Huang said quantum computers are decades away.

D-Wave Quantum (QBTS) and IONQ (IONQ) shares are lower after Nvidia's (NVDA) CEO said a practical use for quantum computing is decades away

An analyst with a buy rating on IonQ stock criticized Nvidia CEO Jensen Huang's quantum computing comments as "self serving."

IonQ ( IONQ -5.69%) has achieved a significant milestone: quantum hardware is now available across all major cloud platforms. This strategic positioning gives developers and enterprises direct access to quantum computing resources through Amazon Web Services, Microsoft Azure, and Alphabet 's Google Cloud.

NVDA CEO Huang estimates 20 years before useful quantum computers. AMC CEO feels shareholder pain. Sportsbooks hit as too many NFL favorites win.

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,

Steve Sosnick, Chief Strategist at Interactive Brokers (IBKR), spoke with Quartz for the latest installment of our “Smart Investing” video series.