IonQ and D-Wave are two of the main pure-play quantum computing stocks right now. Both are highly speculative and bleeding cash. IonQ recently partnered with Nvidia to install a system at their research center. Their revenue for the first half of the year was $145M, up from $28M last year. Operating losses hit $1.06B though. The stock is trading at a P/S ratio of 65. D-Wave already has commercial cloud apps running, but their financials are weak. Revenue dropped to $5.9M in the first half of the year with a $66M operating loss. They are trading at a massive P/S ratio of 475. Both are risky bets, but IonQ seems like the safer pick between the two because of the Nvidia backing and lower valuation.