Quantum Computing didn't have any news of its own to report, but the company is even smaller than D-Wave, with less than $1 million in revenue over the last four quarters. Its stock has soared even higher than D-Wave's over the last year, a disconnect that could lead to a continued decline in Quantum Computing's shares.

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.

The drop in stocks came after Nvidia CEO Jensen Huang's Q&A with analysts at CES in Las Vegas. When answering a question about the future of quantum computing, he said the timeline may be between 15 and 30 years until there is "very useful" quantum computers. This is the relevant quote from Huang: