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.

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.

The carnage in quantum computing stocks Wednesday saw shares of Rigetti Computing (NASDAQ:RGTI), Quantum Computing (NASDAQ:QUBT), and IonQ (NASDAQ:IONQ) plunge 40% or more. Comments made by Nvidia (NASDAQ:NVDA) CEO Jensen Huang that the sector won't see viability for another two decades gutted these former high-flying stocks.

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 are having a tumultuous week, but one fund manager says investors should focus on the long game when it comes to the sector. Earlier this week, quantum computing stocks broadly slid after Nvidia CEO Jensen Huang said “very useful quantum computers” were decades away.

Quantum computing stocks have been on fire over the past few months, but that all changed on Wednesday after Nvidia (NVDA -0.02%) CEO Jensen Huang said it will be 15 to 30 years b