Quantum computing companies are developing next-generation computing platforms that leverage the principles of quantum mechanics to solve complex problems beyond the reach of classical computers. While still in early stages of commercialization, this sector is attracting significant investor interest due to its long-term potential in areas such as cryptography, materials science, finance, logistics, and artificial intelligence.
Recent quantum computing listings have offered early access to companies that aim to lead the next wave of computing. Though many are still in pre-revenue or early-revenue phases, public listings have provided capital to fuel research, development, and commercialization efforts.
Below is a list of notable public quantum computing companies. We focus on pure-play quantum stocks, acknowledging that tech companies like Google, Microsoft, and IBM have also developed advanced quantum computers, while NVIDIA has focused on the tools and infrastructure used in quantum development.
Notable Public Quantum Computing Companies
| Ticker | Company | Ticker | Exchange | Description |
|---|---|---|---|---|
| QBTS | D-Wave Quantum | QBTS | NYSE | A pioneer in quantum annealing systems, D-Wave provides quantum hardware and software platforms used in optimization and machine learning applications. |
| IONQ | IonQ | IONQ | NYSE | IonQ uses trapped ion technology to build scalable quantum processors and offers access to its systems via major cloud platforms. |
| RGTI | Rigetti Computing | RGTI | NASDAQ | Rigetti builds superconducting quantum processors and offers full-stack quantum computing services through its hybrid cloud platform. |
| ARQQ | Arqit Quantum | ARQQ | NASDAQ | Arqit focuses on quantum encryption, developing cybersecurity solutions resistant to quantum-enabled attacks. |
| QUBT | Quantum Computing | QUBT | NASDAQ | QCI develops quantum-ready software and applications with a focus on optimization, machine learning, and cybersecurity use cases. |
Quantum IPO Pipeline
While the current public quantum computing market remains small, the sector is expected to grow over the next decade as the technology matures and commercial use cases expand. Investors are closely watching for new entrants and breakthroughs that could accelerate real-world adoption.
Stay up to date with our IPO Calendar and the IPO Pro Pipeline to track upcoming listings in the quantum and broader tech sectors.
HOW TO INVEST IN Quantum Computing STOCKS
Investing in Quantum Computing Stocks
Investing in quantum computing stocks requires a deep understanding of the technology’s maturity, commercialization timeline, and strategic positioning within broader tech ecosystems. Because many companies in this space are still early-stage, their long-term commercial potential can be difficult to pinpoint.
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Quantum Stock Metrics
Key metrics to evaluate include revenue and backlog, cash runway, R&D investment, patent portfolio, proprietary technology (e.g., qubit architecture), quantum volume, gate fidelity and error rates, partnerships with government or enterprise customers, and cloud accessibility. Consider the hardware modality (superconducting, trapped ion, photonic, etc.). Assess timelines for product deployment, operational milestones, and potential revenue inflection points. Watch for indicators of technical breakthroughs and use-case validation.
Best Quantum Computing Stocks to Buy
Screen for quantum computing companies that fit your criteria for market cap - many will not yet have revenue, with profitability a long way away. At this stage, investing in pure-play quantum computing ventures is an extremely risky endeavor, albeit one with significant potential upside over the long term. Investors currently only have a handful of public companies to evaluate. Pay close attention to the key metrics above, and gain a thorough understanding of the company’s focus (hardware vs. software), commercialization stage, and strategic partnerships. Look for companies with robust IP portfolios, proven leadership teams, and strong institutional backing.
How Quantum Computing Stocks Differ from Traditional Tech Companies
Quantum computing stocks often trade more like long-term venture investments than established tech firms. Many are pre-revenue or operate at a loss while investing heavily in foundational research and engineering. As a result, they may carry higher risk and volatility but also offer the potential for asymmetric returns if key milestones are achieved.
Understanding the nascent yet disruptive nature of quantum technology, and tracking early leaders, can help investors position for long-term growth in this emerging space.
Discover Quantum Computing Investment Ideas by Exploring the Quantum Ecosystem
Quantum Computing is on the verge of transforming industries by solving problems that are computationally impossible for classical systems. While still in early development, a growing number of public companies and startups are building the infrastructure, tools, and applications that will power this next era of computation.
To identify promising investment opportunities, investors can examine companies across the Quantum Ecosystem. Below we lay out the progression of technologies and services that move quantum computing from fundamental science to commercial deployment.
Six core segments of the Quantum Ecosystem:
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Quantum Hardware & Processors
This is the foundation of the industry: building quantum bits (qubits) using technologies like superconducting circuits, trapped ions, photonics, or neutral atoms. Companies like IonQ (IONQ), Rigetti (RGTI), and D-Wave (QBTS) are leaders in developing scalable quantum hardware. This segment requires significant R&D investment but is critical for enabling all downstream use cases.
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Quantum Control Systems & Infrastructure
To operate quantum processors, specialized control electronics, refrigeration systems (dilution refrigerators), and quantum interconnects are required. While some players build this in-house, others like Oxford Instruments (OXINF) and Bluefors provide enabling technologies. This layer supports both academic research and commercial quantum development.
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Quantum Software & Operating Systems
Quantum computers require entirely new software stacks. This includes compilers, operating systems, and developer tools. Companies like Quantum Computing Inc. (QUBT) and Classiq offer quantum software platforms that translate high-level problems into quantum circuits and optimize performance across different hardware.
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Hybrid Cloud & Quantum-as-a-Service Platforms
Public cloud integration is making quantum hardware more accessible. Players like Amazon Braket, Microsoft Azure Quantum, and Google Quantum AI offer quantum computing as a service (QCaaS), often in partnership with companies like Rigetti and IonQ. These platforms are essential for scaling quantum usage beyond research labs.
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Industry-Specific Quantum Applications
Startups and emerging players are developing quantum algorithms for real-world problems in logistics, pharmaceuticals, materials science, and cryptography. Zapata Computing, QC Ware, and Terra Quantum focus on domain-specific use cases. Investors can look for companies demonstrating commercial proof-of-concept or strategic partnerships.
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Quantum Cybersecurity & Communications
Quantum technology also includes quantum key distribution (QKD) and post-quantum cryptography (PQC). Companies like Arqit (ARQQ) are building encryption tools designed to withstand attacks from future quantum computers. This segment addresses growing concerns over long-term data security.
A Framework for Investing Across the Quantum Ecosystem
Each link in the quantum ecosystem presents unique opportunities and challenges. Hardware and infrastructure companies may take longer to scale revenue but could deliver breakthrough returns if they lead on qubit fidelity or scalability. Software and platform players may commercialize sooner by serving as ecosystem enablers. Application developers and cybersecurity firms provide earlier monetization potential through partnerships and licensing.
Investors may benefit by diversifying across stages, from foundational quantum hardware to enabling software and vertical solutions. In addition to the pure-plays, investors can take a lower-risk approach of tapping into the quantum revolution by owning large-cap tech leaders such as Google, IBM, and Microsoft. As the ecosystem matures, companies operating at the intersections may offer attractive growth profiles, by integrating quantum tools into cloud services or solving real-world optimization problems.
By understanding how value flows through the quantum computing ecosystem, investors can seek to identify where the greatest returns may occur in this emerging industry.
