Shares of Quantum Computing Inc. (QUBT) plummeted by 5.06% in the pre-market trading session on Friday, following comments from Nvidia CEO Jensen Huang that suggested practical quantum computers are still decades away.

Huang, speaking at the CES convention in Las Vegas, stated that "very simple quantum computers" may not be viable for 20 years, and "very useful quantum computers" could take 15 to 30 years to develop. This outlook dampened investor enthusiasm for quantum computing stocks like QUBT, which tumbled alongside other companies in the sector such as Rigetti Computing and IonQ.

The sell-off in QUBT and its peers was further fueled by comments from controversial investor Martin Shkreli, who announced that he was shorting several quantum computing stocks, calling them "humorously overvalued" and resembling the dot-com bubble. Shkreli argued that these companies have minimal prospects of generating significant revenue in the near future.

However, QUBT shares staged a partial recovery later in the pre-market session, rising by 5% as some investors potentially viewed the initial sell-off as an overreaction. Other quantum computing stocks also rebounded, with SEALSQ jumping 22% and ARQQ rising 12%.