9 Top Quantum Computing Stocks for 2026 and How to Invest

Quantum computing could become one of the most disruptive technologies of the next decade, with potential applications in artificial intelligence (AI), cybersecurity, and drug discovery. Unlike traditional computers, quantum systems use the laws of quantum mechanics to solve certain problems far faster than today’s machines can.

For investors, the long-term promise of quantum computing comes with significant uncertainty. Most quantum computers remain in the research and development (R&D) phase as of 2026, and truly commercial systems are likely years away. Still, steady technical progress, increased cloud access, and growing interest from large technology companies have brought quantum computing stocks into sharper focus.

While timelines remain uncertain, early investors are positioning for a future where quantum computing plays a meaningful role alongside classical and AI-driven systems.

9 top quantum computing stocks for 2026

Here are some top companies with a hand in the actual development of quantum computers and related technologies:

1. IonQ

IonQ (NYSE:IONQ) went public via a merger with special purpose acquisition company (SPAC) dMY Technology Group III in 2021. IonQ is a start-up-stage quantum computing company and the first quantum computing pure play to become publicly traded.

IonQ develops quantum computing hardware and is the first to have its systems available across all major public cloud services. It plans to build a network of quantum computers accessible via the cloud and targets rapid near-term growth as researchers begin using its hardware on a larger scale.

The company partners with Microsoft (NASDAQ:MSFT), Amazon (NASDAQ:AMZN) Web Services (AWS), and Alphabet‘s (NASDAQ:GOOG) (NASDAQ:GOOGL) Google Cloud. Japanese telecommunications company and tech investor SoftBank Group (OTC:SFTBF) has also invested in IonQ.

SoftBank is partnering with IonQ to bring quantum computing power to the many other tech companies in its portfolio. While its older Aria system has been available via AWS since 2023, the company is now rolling out its next-generation 100-qubit system, Tempo, designed to achieve commercial advantage for enterprise workloads.

IonQ has generated minimal revenue so far and is not yet profitable. It will need to continue spending heavily to develop its products and business for at least a few more years. However, it reported a US$470 million backlog of orders in the first quarter of 2026. That’s a substantial start, up 550% from the year-ago period.

Investing in this start-up is still a speculative play, despite its improving financial prospects. If IonQ’s research efforts are successful, the stock could be a profitable way to invest in quantum computing, but investors should act with prudence. This is still a start-up business, and its valuation is often sky-high.

2. Microsoft

The software titan researches and develops a wide range of technologies, and quantum computing is no exception. Quantum computers need special refrigeration, superconducting chips, and highly specific software, all of which Microsoft is developing in its labs. Microsoft also offers researchers access to quantum computing services via its massive cloud platform, Azure.

Quantum computing tech probably won’t be a significant driver of Microsoft’s financial performance anytime soon. However, the company is helping to develop the next generation of computing technology. Microsoft stock has been a winning investment for decades, and its importance in software technology will persist for a very long time.

3. Alphabet

Alphabet subsidiary Google, the third-largest public cloud computing platform, has developed its own quantum computing chips, branded Sycamore. The tech behemoth is using quantum computing to advance its AI software systems. In March 2022, it spun off its quantum computing software unit into an independent start-up called SandboxAQ.

Quantum computing, coupled with AI, may help Google to improve the efficiency of large computing systems. This technology is central to the company’s efforts to innovate.

4. Nvidia

Nvidia (NASDAQ:NVDA) has emerged as the global leader in advanced semiconductor designs, powering next-gen tech with its graphics processing units (GPUs) that accelerate computing power. Nvidia is helping develop quantum computers using its GPUs, retaining its leadership in sophisticated circuit design. The company is also a leader in AI machine learning.

Nvidia is leveraging its GPU software to support the development of quantum computing. It has released cuQuantum, a software development kit designed to help software developers build workflows on quantum computing. The idea is to control next-generation quantum systems using a digital toolkit, thereby simplifying the transition from one computing era to another.

On the hardware side, Nvidia announced DGX Quantum in early 2023. The system pairs Nvidia’s most advanced GPUs with quantum hardware developed by start-up Quantum Machines. It is made for researchers advancing quantum computing technology. Nvidia’s quantum work has wide-ranging uses, from breakthroughs in jet engine efficiency to rapid drug and healthcare development.

5. Intel

Intel (NASDAQ:INTC) lost its lead in the semiconductor industry. Third-party foundry Taiwan Semiconductor Manufacturing (NYSE:TSM) passed Intel up a few years ago, and numerous companies (including Nvidia) are valued far higher owing to their greater exposure to growth markets like GPUs for AI.

But Intel is mounting a comeback. One of its initiatives includes Tunnel Falls, a quantum computing chip. The silicon-based chip uses Intel’s most advanced manufacturing processes and is now available to the research community. Intel says it has partnered with numerous government and university research departments to test Tunnel Falls.

Quantum computing is not central to Intel’s plans to regain its dominance in the semiconductor industry. Still, if research yields positive results, it could become an important segment for the integrated chip design and manufacturing giant.

6. Quantinuum

Honeywell (NASDAQ:HON) produces everything from aerospace equipment to advanced construction materials to medical devices. Its diverse work also includes quantum computing. The company spun out its quantum computing operations as a separate company in June 2026. Now you can invest in Quantinuum (NASDAQ:QNT) as a stand-alone stock.

Honeywell’s quantum computing division has a longer history than the recent spinoff suggests. The unit merged with Cambridge Quantum Computing in 2021 to form Quantinuum, which operated as a Honeywell subsidiary until the 2026 IPO. Honeywell remains the controlling shareholder and continues to supply hardware and infrastructure to the company.

The company builds trapped-ion quantum computers and the software stack that runs on them. Customers include JPMorgan Chase (NYSE:JPM, Amgen (NASDAQ:AMGN), and Honeywell itself, which uses Quantinuum’s tech in some of its own products.

The financials tell an early-stage business story, though. Quantinuum generated US$30.9 million in revenue for 2025 against a US$192.6 million net loss. The company had US$677 million in cash as of March 31, 2026.

With Honeywell’s backing and years of research results, Quantinuum fills a gap in the quantum computing industry. It stands between the risky pure-play names and the tech heavyweights folding quantum research into their larger business models.

For investors who want a direct quantum bet with some adult supervision, this is the only option available so far.

7. IBM

IBM (NYSE:IBM) has its own quantum computing chips and systems available for commercial use through its IBM Quantum business unit. More than 210 research organizations and companies, ranging from financial services businesses to automakers to energy producers, use IBM’s quantum computing services.

In 2021, the company struck a deal with government contractor RTX (formerly Raytheon Technologies) (NYSE:RTX) to develop AI and quantum computing for the aerospace, defense, and intelligence industries. The U.S. government will be a top customer of the research collaboration. IBM combines an innovative product portfolio with modest stock gains compared to other quantum computing and AI experts.

8. Rigetti Computing

Rigetti (NASDAQ:RGTI) wants to be a one-stop shop for your quantum computing needs. It designs and manufactures its own superconducting quantum chips, integrates them with digital control systems, and offers a platform that blends quantum processors with classical computing to run practical, hybrid workloads.

Like its quantum-specialist peers, Rigetti runs its business on stock sale funds rather than revenue streams.

The terminal risk for micro-cap pure-plays like Rigetti has always been cash burn. However, the regulatory landscape shifted dramatically in May 2026 when the U.S. Department of Commerce announced a US$2 billion funding injection under the CHIPS and Science Act to secure domestic quantum infrastructure.

Rigetti walked away with a letter of intent for as much as US$100 million in federal incentives. That’s a significant safety cushion that should give Rigetti more time to deliver business results.

You should still be careful with Rigetti’s shares, though. With promising research projects but minimal business operations, the stock often looks overheated.

9. D-Wave Quantum

Finally, a Canadian company! D-Wave Quantum (NYSE:QBTS) was founded in British Columbia back in 1999, though it has since moved its headquarters to the U.S.

Instead of separate ions, D-Wave’s systems rely on superconducting loops with strong magnetic fields. These annealing circuits work together in groups, gaining pattern-finding power from the interactions among their energy states.

This approach still needs extreme cooling, and it’s a messy system that works only under sophisticated error-correction setups. But the annealing systems can also grow incredibly powerful under the right circumstances. In particular, annealing circuits can provide a better starting point for quantum gate calculations.

So, D-Wave’s quantum computers could become a standard addition to more ambitious quantum gate systems. That’s a unique strategy. D-Wave’s stock is richly valued despite lackluster revenues and negative profit margins. Be careful with these financially unstable specialists, dear investor.

Benefits and risks of investing in quantum computing stocks

Benefits

• Quantum computing is approaching an inflection point, with multiple companies making measurable technical progress (Alphabet’s Willow chip, D-Wave’s quantum supremacy demonstration, IonQ’s roadmap acceleration)
• Near-term commercial value is emerging in optimization and materials simulation
• IBM and others are targeting fault-tolerant quantum computers by 2029, suggesting concrete milestones rather than open-ended timelines
• Infrastructure is maturing; Nvidia’s CUDA-Q platform is building the bridge between quantum and classical systems
• Players like IonQ, Rigetti, and Quantinuum are already signing serious contracts

Risks

• It’s early in the history of quantum-based business operations; nobody knows the real long-term winners yet
• The sector seems ready for a shake-up, removing shaky technology and underfunded research projects from the race
• Long development timelines favor companies with deep pockets, putting smaller players at a disadvantage
• No established leader exists; smaller quantum specialists face significant risks without a financial safety net

Methodology: How these stocks were chosen

Quantum computing investors should read up on the basics of the technology. You’ll notice that some computing methods take a long time to deliver specific results, while others quickly deliver estimates in the right ballpark. There are also software complexities, ways to connect classical digital computers to their quantum cousins, and many methods and materials used to perform quantum-based calculations. Understanding these nuances will help you make smarter investments, even in this early stage of an emerging technology.

There are a few quantum computing pure-play companies. Some, such as D-Wave Quantum and Rigetti Computing, went public in the early 2020s.

Their stocks soared in 2024 as basic quantum computing technology took a major step forward. Further tech breakthroughs in 2025 kept the momentum going, lifting the quantum specialists to new highs in October.

Several companies developing software for quantum computers exist, such as security software start-up Arqit Quantum (NASDAQ:ARQQ) and integrated hardware and software company Quantum Computing (NASDAQ:QUBT). A quantum computing exchange-traded fund (ETF), Defiance Quantum ETF (NASDAQ:QTUM), is also available, providing broader exposure to this nascent industry.

Many larger tech businesses and semiconductor designers are also increasing their activity in the quantum realm.

Should you invest in quantum computing stocks?

At this point, there is no established leader in quantum computing. Dozens of companies, including several tech giants, are researching its potential and experimenting with real-world uses. Developing quantum hardware that accurately performs computations and meets reasonable return-on-investment thresholds is still ongoing.

So, there are no clear long-term winners to invest in at this point, apart from the established tech giants who can treat quantum computing as a promising side gig. Smaller quantum computing experts such as D-Wave, Rigetti, and IonQ might deliver great long-term returns — but they also face significant risks without a financial safety net.

All things considered, quantum computing is best approached with care. Established winners and exchange-traded funds (ETFs) can limit your risks, and direct bets on the smaller experts in this field should be fairly small. Those are high-risk, high-reward long-term bets.