Quantinuum's arrival on the stock market is separating quantum computing's contenders from its pretenders.

There are many distinct ways to build a quantum computer, and so far, it's not clear which of the underlying technologies ...

Shares of four major quantum computing names are sliding in unison Tuesday afternoon, reversing nearly all of Monday’s sharp ...

Explore how two quantum innovators stack up on customer reach, financial health, and risk as they race for commercial leadership in a fast-evolving sector.

Shares of Quantum Computing Inc. (NASDAQ:QUBT) stock and D-Wave Quantum (NYSE:QBTS) stock are both up 12% in Monday morning ...

Detailed price information for D-Wave Quantum Inc (QBTS-N) from The Globe and Mail including charting and trades.

Today, June 15, 2026, investors weigh a bold logical-qubit roadmap and rapid revenue growth against mounting valuation risks.

Quantum computing continues to capture investor attention as one of the most ambitious frontier technologies in the market today. While the industry is still early and timelines remain uncertain, ...

There's a growing belief among analysts that this quantum computing stock has room to run.

The MarketWatch News Department was not involved in the creation of this content. Transaction secures D-Wave's position as only company capable of addressing full quantum computing market opportunity ...

D-Wave develops quantum annealing systems and services. QCi believes its photonic chips can revolutionize the quantum market. Both stocks are speculative, but one is on firmer ground. Classical ...

RGTI and QBTS shares gained more than 40% in six months, reflecting growing investor interest. RGTI focuses on gate-based, chiplet superconducting systems aimed at long-term fault tolerance. QBTS ...