Quantum computing stocks sit at the crossroads of advanced research and real world problem solving, which can appeal to investors looking for growth stories not solely tied to traditional interest rate or inflation trends. While global data show moderating inflation in several regions and mixed growth signals across developed and emerging markets, capital continues to search for technologies that may reshape areas like logistics, materials science, and security. This Quantum Computing Stocks screener picks out companies that are active in quantum algorithms, superconducting qubits, and related software. This article highlights 3 of the most compelling stocks currently featured.

IonQ (IONQ)

Overview: IonQ operates quantum computing systems that customers can access over major cloud platforms such as AWS, Microsoft Azure, and Google Cloud, as well as through its own services. It also works on quantum secure communications, detection systems, and customized hardware, plus consulting to help clients build algorithms that tap into its trapped ion technology.

Operations: IonQ generates about US$187.1m in revenue primarily from Computer Services, with around US$122.4m from the United States, US$27.5m from Switzerland, and US$37.2m from other international markets.

Market Cap: US$14.7b

IonQ stands out in quantum computing because it couples room temperature trapped ion hardware, which can help large cloud players control data center costs, with a growing stack of quantum security and sensing products such as Clavis XG and InSAR for space missions. The company reports current profitability, a strong backlog and remaining performance obligations, and liquidity of roughly US$3.1b that supports its push toward larger 256 qubit systems and vertically integrated chip production. At the same time, a high P/E ratio, expected earnings declines, past shareholder dilution, and a relatively new board and management team underline that execution risk is real. For investors, the key question is whether that balance sheet and technology roadmap are enough to justify the premium story around IonQ.

IonQ’s room temperature trapped ion story, current profitability and US$3.1b liquidity stack raise a bigger question: how does that square with its premium P/E and expected earnings declines in the 2 key rewards and 4 important warning signs (3 are major!)

Western Digital (WDC)

Overview: Western Digital is a long established data storage company that makes hard disk drives and related systems for everything from consumer laptops to large cloud data centers. It is now working with partners on quantum resistant error correction to help keep that data secure in a future quantum computing world.

Operations: Western Digital generates about US$11.8b in revenue primarily from Hard Disk Drives, with a further US$2.1b reported from Europe, the Middle East and Africa and US$9.7b in segment adjustments across its reporting lines.

Market Cap: US$194.2b

Western Digital provides exposure to the storage hardware that underpins AI and quantum era computing, with high capacity HDDs tied into all top five hyperscalers and a roadmap that includes technologies such as UltraSMR and HAMR for denser, more efficient drives. Set against that are notable pressure points, including reliance on a relatively small group of cloud customers, share price volatility, insider selling and a relatively new management team. The key question for investors is how those strengths and vulnerabilities balance through the next cycle.

Western Digital’s storage reach across all top five hyperscalers could be masking a more complex risk reward picture. Before you draw conclusions, review the 3 key rewards and 3 important warning signs (1 is major!)

D-Wave Quantum (QBTS)

Overview: D-Wave Quantum builds quantum computers and cloud services that tackle complex optimization problems for businesses and governments, using its Advantage and Advantage2 systems, Ocean software tools, and the Leap cloud platform to support use cases from logistics and factory scheduling to portfolio and drug discovery workflows.

Operations: D-Wave Quantum generates about US$12.4m in revenue from Internet Software & Services, primarily serving customers across Germany, the United States, Japan, Canada and other international markets.

Market Cap: US$7.0b

D-Wave Quantum attracts attention because it already sells commercially used quantum systems and cloud access for real world optimization problems, while pushing a dual track roadmap in both annealing and gate model quantum computing that is supported by government programs and NSF funding. Record bookings of about US$33.4m, a growing base of more than 100 revenue generating customers and recognition as a Leader in IDC’s 2026 vendor assessment indicate interest in its technology. At the same time, D-Wave remains loss making, revenue in a recent quarter was US$2.86m alongside a loss of US$18.36m, insiders have been selling shares and the stock has been volatile, so the investment case depends on whether strong bookings, government support and product milestones convert into sustained revenue growth and a path toward better earnings.

D-Wave Quantum’s commercial traction, government backing and twin track technology roadmap raise bigger questions than a single quarter’s US$18.36m loss can answer. Step into the fuller risk and opportunity picture in the 1 key reward and 4 important warning signs

The three quantum computing stocks covered here are only a starting point; the full Quantum Computing Stocks screener surfaces 23 more companies with equally compelling quantum hardware and software narratives that could broaden your watchlist. Use Simply Wall St to identify the specific catalysts and company stories that matter to you, filter by the themes that fit your thesis, and analyze where your highest conviction opportunities might sit in this emerging space.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.