Quantum Computing Stocks Surge in May 2026: QUBT, D-Wave, IonQ, Rigetti Rally Explained

After a challenging start to 2026, America’s four major publicly traded quantum computing companies are experiencing a significant stock rally. The surge began around World Quantum Day in mid-April and has continued into May, with all four firms—D-Wave Quantum Inc. (NYSE: QBTS), IonQ, Inc. (NYSE: IONQ), Quantum Computing Inc. (Nasdaq: QUBT), and Rigetti Computing, Inc. (Nasdaq: RGTI)—recording substantial gains.

As of the latest premarket trading, the stocks are up again: QBTS is up nearly 7%, IONQ by 4.5%, QUBT by 24%, and RGTI by 5%. These gains follow strong performance over the previous five trading sessions, with Rigetti up nearly 16%, Quantum Computing Inc. over 7%, IonQ over 24%, and D-Wave nearly 15%.

Why Are Quantum Stocks Rising Now?

The primary driver behind the recent surge is quantum earnings season, during which all four companies reported their Q1 2026 financial results—many of which exceeded expectations.

• IonQ (NYSE: IONQ) led the earnings season on May 6, reporting a staggering 755% year-over-year revenue growth for Q1 2026.
• Rigetti (Nasdaq: RGTI) and Quantum Computing Inc. (Nasdaq: QUBT) followed on May 11, with Rigetti posting 193% year-over-year revenue growth and Quantum Computing Inc. reporting an extraordinary over 9,300% year-over-year revenue increase.
• D-Wave (NYSE: QBTS) reported its Q1 results today, showing an 81% year-over-year revenue decline. However, the company also announced Q1 bookings of $33.4 million, a 1,994% increase compared to Q1 2025. Bookings represent signed contracts for future business, signaling growing demand for D-Wave’s quantum solutions.

The Road Ahead for Quantum Computing Stocks

Despite the recent rally, the quantum computing sector remains in the early stages of development. While investor optimism has returned, the long-term viability of these companies depends on sustained revenue growth, technological advancements, and market adoption. Analysts caution that the path forward may still be volatile, with external factors such as geopolitical tensions and economic conditions playing a role in stock performance.