Nvidia CEO Jensen Huang's sobering assessment of quantum computing's timeline sent the space into a tailspin last week. During a question-and-answer session with analysts, Huang suggested that useful quantum computers were likely 15 to 30 years away.

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

Rigetti Computing's quantum computing potential is distant. Find out why RGTI stock faces significant dilution and speculative risks in the near term.

Defiance Quantum ETF returned 60.4% over the last year through Jan. 3 -- just over double the S&P 500 Index's 28.1% return.

Jensen Huang’s comments at last week’s CES about quantum computing being decades away stirred up discussion within the quantum industry.