3 Quantum Computing Stocks to Watch Now
3 Quantum Computing Stocks to Watch Now
Quantum computing is still in the early stages, but many experts believe it could become one of the most important technologies after artificial intelligence. While large-scale commercial use may still be years away, progress in hardware, software, and real-world testing continues to accelerate.
For investors willing to accept higher risk, some quantum computing companies offer long-term upside if the technology matures as expected. Below are three quantum computing stocks to watch in 2026, each with a different approach to solving one of the industry’s biggest challenges: reducing errors while scaling performance.
Important note: Quantum computing stocks are considered high-risk investments. The technology is not yet mainstream, and future success is far from guaranteed.
IonQ (IONQ)
IonQ is widely seen as one of the leading pure-play quantum computing companies. Its main advantage comes from its trapped-ion technology, which uses individual atoms as qubits. This method tends to be more stable and less error-prone compared to some alternatives.
One of the biggest hurdles in quantum computing today is accuracy. Even small errors can make calculations unreliable. IonQ has reported gate fidelity of up to 99.99%, one of the highest levels in the industry. While this is still not perfect, it is good enough to allow further error reduction through software-based solutions such as its Clifford Noise Reduction (CliNR) platform.
Beyond hardware, IonQ wants to control a full quantum ecosystem. The company has made acquisitions in areas like photonics, quantum sensing, and space-based quantum communication, similar to how Nvidia built dominance through both hardware and software in traditional computing.
Why it matters:
If IonQ continues improving accuracy while expanding its ecosystem, it could become a foundational platform for future quantum applications.
Rigetti Computing (RGTI)
Rigetti takes a different route by focusing on superconducting qubits, which are known for their speed. Estimates suggest Rigetti’s systems can be thousands of times faster than trapped-ion systems. However, speed alone is not enough accuracy is equally critical.
In 2025, Rigetti reached a major milestone by showcasing the largest multichip quantum computer in the industry. The company also introduced a 100+ qubit chiplet system with 99.5% fidelity and plans to increase this to 150+ qubits with 99.7% fidelity. Longer term, Rigetti is targeting a 1,000+ qubit system with 99.8% fidelity by around 2027.
Commercial traction is slowly improving. Rigetti secured two system orders worth $5.7 million, expected to be delivered in the first half of the year. It also received a $5.8 million, three-year contract from the U.S. Air Force Research Laboratory to help develop a superconducting quantum network alongside Dutch firm QphoX.
Why it matters:
If Rigetti can close the accuracy gap while maintaining speed, it could gain a strong competitive edge in large-scale quantum computing.
D-Wave Quantum (QBTS)
D-Wave stands out because it already has paying customers. Unlike many rivals focused mainly on research and testing, D-Wave specializes in quantum annealing, a method designed to find optimal solutions to complex problems rather than perform general-purpose quantum calculations.
This approach has allowed D-Wave to launch a production-grade system called Advantage2. The company reports over 100 paying customers, including more than 20 companies from the Forbes Global 2000.
Financially, D-Wave showed strong momentum. In the third quarter, revenue doubled to $3.7 million, while bookings rose to $2.4 million. After the quarter ended, the company signed a €10 million deal in Italy for its Advantage2 system.
D-Wave is also expanding into gate-based quantum computing, using fluxonium qubits, which it believes may be more resistant to environmental noise. With approximately $830 million in cash, the company says it has the resources to accelerate development in this area.
Why it matters:
D-Wave’s existing customer base and revenue make it one of the more commercially proven players in the quantum space.
IBM (IBM)
IBM may not be a startup, but it is one of the most established leaders in quantum computing. Over the years, IBM has reshaped itself into a major provider of hybrid cloud, AI software, and enterprise consulting, serving large organizations worldwide.
IBM develops quantum processors, full quantum systems, and Qiskit, one of the most widely used quantum software development tools. Thanks to its deep enterprise relationships, IBM has already generated over $1 billion in lifetime quantum-related revenue.
While IBM is unlikely to deliver explosive growth like smaller quantum startups, it offers more stability and lower risk for investors who want exposure to quantum technology without betting on unproven companies.
Why it matters:
IBM provides a more conservative path into quantum computing, backed by real revenue and long-standing enterprise trust.
Final Thoughts: High Potential, High Uncertainty
Quantum computing could reshape industries ranging from finance and healthcare to logistics and cybersecurity. However, the field is still developing, and timelines remain uncertain.
- IonQ focuses on accuracy and ecosystem control
- Rigetti emphasizes speed and large-scale systems
- D-Wave already serves paying customers
- IBM offers stability and lower risk exposure
For long-term investors, quantum computing may be worth watching but diversification and patience are essential.
Disclaimer
This article is for educational and informational purposes only and does not constitute financial advice. Investing in quantum computing stocks involves significant risk, including the potential loss of capital. Always conduct your own research or consult a qualified financial advisor before making investment decisions.
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