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Top 3 Quantum Computing Stocks To Watch In October 2026

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AI spending is pulling in massive infrastructure projects, and two chip heavyweights now flag capital access as a real bottleneck for future computing power. When money gets tight, every leap in efficiency matters more. Quantum computing sits right on that fault line, offering a radically different way to crunch problems traditional systems struggle with. This article spotlights three quantum-focused stocks from our screener that investors are watching closely.

The three stocks covered next are just a sample, and the full quantum screen on Simply Wall St surfaced 22 more companies with equally compelling stories that are not included in this article. To go deeper into this theme, identify patterns, and analyze potential high conviction ideas, head straight into the Quantum Computing Stocks screener .

Pasqal Holding (PSQL)

Overview:Pasqal Holding builds neutral atom quantum processors, software tools, and cloud services that let industries run real quantum algorithms at scale.

Market Cap:$1.45b

Pasqal Holding gives you direct exposure to neutral atom quantum hardware combined with a full software and cloud stack that already underpins real experiments in finance, energy, healthcare, and logistics. Recent partnerships, government collaborations, and index inclusion point to rising enterprise attention. However, the impact on future demand and pricing power depends on how one unseen pressure develops.

That unseen pressure is key, so check the 1 key reward and 1 important major warning sign to see whether Pasqal Holding's potential upside is being amplified or quietly limited by it.

NasdaqGM:PSQL Earnings & Revenue Growth as at Oct 2026
NasdaqGM:PSQL Earnings & Revenue Growth as at Oct 2026

FormFactor (FORM)

Overview:FormFactor builds probe cards and cryogenic test systems that let chipmakers and quantum labs test qubit and advanced AI processors.

Operations:FormFactor generates about $747 million from Probe Cards and $155 million from Systems, with revenue concentrated in South Korea and Taiwan.

Market Cap:$10.9b

FormFactor matters for this quantum screen because its test gear touches the qubit chips themselves, giving you exposure to the measurement tools every serious quantum hardware project needs before it can move from lab prototype to commercial system.

"Accelerating adoption of generative AI, high-performance computing, and HBM DRAM in data centers is driving substantial increases in test complexity and intensity. FormFactor's differentiated probe cards and early leadership in HBM4 chiplet testing position the company to benefit from higher ASPs and revenue growth as these markets scale."

What happens to future earnings power depends heavily on how one emerging mix shift in its test portfolio plays out.

That portfolio shift is exactly where the next chapter starts, so read the full narrative for FormFactor to see how FormFactor's test mix could accelerate or mask its earnings potential.

NasdaqGS:FORM Earnings & Revenue Growth as at Oct 2026
NasdaqGS:FORM Earnings & Revenue Growth as at Oct 2026

D-Wave Quantum (QBTS)

Overview:D-Wave Quantum delivers commercial quantum computers, cloud access, and developer tools that let enterprises run real optimization workloads on quantum hardware.

Operations:D-Wave Quantum reports about US$12 million in Internet Software & Services revenue, with sales spread across the United States, Germany, Japan, Canada, and other regions.

Market Cap:US$5.43b

D-Wave Quantum matters for this quantum computing screen because its hardware, cloud service, and SDK bundle give businesses a direct way to test real workloads on purpose built quantum systems instead of treating the field as a distant science project.

"In January 2026, D-Wave completed its watershed acquisition of Quantum Circuits Inc. (QCi). This was the "missing piece" of the D-Wave puzzle, because it addressed the industry's biggest hurdle: Error Correction."

What happens to future demand for D-Wave Quantum's platform could hinge on how one emerging shift in enterprise scale deployments unfolds.

That shift is already in play, so read the full narrative for D-Wave Quantum to see how D-Wave Quantum's QCi deal could accelerate adoption while masking new fault lines.

NasdaqGS:QBTS Earnings & Revenue Growth as at Oct 2026
NasdaqGS:QBTS Earnings & Revenue Growth as at Oct 2026

Seeking Alternatives Before Momentum Flies

Fresh ideas often move first. Once momentum builds, entry points can vanish as prices start flying and attention floods in. Scan these under the radar for now pockets and act now.

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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com

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