Quantum Stock Meltdown: RGTI, IONQ and QBTS Crash as 2025 Boom Unravels

Shares of quantum-computing companies slid sharply in November, with several pure-play names posting losses of more than 30% during the month.

Rigetti Computing RGTI dropped about 40% from early-November levels. D-Wave Quantum QBTS fell more than 30%. IonQ IONQ retreated roughly 25% from its October high, while Quantum Computing QUBT declined more than 25%.

The pullback followed heavy gains earlier in 2025 that pushed valuations well above near-term revenue. Investors appeared to refocus on operating losses and slim sales, which remain common across the group.

Capital-raising added pressure. IonQ completed an equity sale, and Quantum Computing outlined plans that could add shares to the market, raising dilution concerns.

The sentiment in the sector also faded away as traders dumped high-risk technological stocks. According to analysts, quantum names usually move much more than the target market when individuals are not so hungry to take risks.

Despite the reports of triple-digit revenue increases in certain companies, the short-term profits remain nervous and that is continuing to shake the industry as it continues to need cash and schedules regarding when things get done continue to lengthen.