Rigetti Computing is at the forefront of the quantum computing industry, but the company has a speculative stock valuation.

Quantum computing stocks took a dive Wednesday after investors' perceptions about the outlook for the sector were dramatically corrected. Valuations in the nascent space had been

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.