▌Top Stocks · QUANTUM COMPUTING·Updated June 11, 2026
Best Quantum Computing Stocks for June 2026
These 10 quantum computing stocks range from speculative pure plays to high-quality platform leaders, with Microsoft ranked as the strongest all-around June 2026 pick.
Top Stocks · QUANTUM COMPUTINGUpdated June 11, 2026
Quantum computing remains one of the market’s purest future-optionality themes. Investors are still underwriting the possibility that today’s experimental systems eventually become commercially meaningful in optimization, chemistry, materials science, cybersecurity, and AI-adjacent workloads. That helps explain why the group can attract capital even though many of the pure-play names are still small, unprofitable, and valued more on technical milestones and customer traction than on durable earnings power.
The backdrop is also getting more strategic. Government funding, defense interest, and partnerships with cloud platforms, chipmakers, and enterprise software vendors are helping support the theme, while a roughly $2 billion U.S. quantum build-out push has reinforced the idea that this is now a technology race rather than just a science project. Within the theme, investors should separate trapped-ion systems, superconducting platforms, annealing specialists, and the larger infrastructure companies that can enable quantum through cloud access, semiconductors, control systems, and enterprise integration.
That distinction matters for stock selection. Some companies here are direct quantum bets with very high upside but thin fundamentals, while others offer lower-purity exposure backed by large, profitable businesses. The list below is ranked in countdown order from #10 to #1 based on investment quality, balancing business strength, profitability, growth, earnings execution, and analyst sentiment within this volatile theme.
For this screen, we focused on U.S.-listed stocks with market capitalizations above $500 million that have either direct quantum computing exposure or meaningful strategic relevance to the quantum stack. We then ranked the names primarily by investment quality, using our composite quality grade alongside profitability, growth, earnings consistency, and analyst consensus. Because this is a countdown, the more speculative names appear first, while the strongest all-around pick in the group is revealed at #1.
What they do. The company builds superconducting quantum computers and quantum processing units, then monetizes them through quantum computing as a service, cloud access, hardware systems, foundry services, and professional services. Its portfolio includes Novera QPUs, the 36-qubit Cepheus-1-36Q system, and the 84-qubit Ankaa-3 quantum computer, giving it one of the more direct pure-play business models in the sector.
Why it fits. Rigetti is a true platform bet on superconducting quantum computing, one of the key sub-segments investors track. Its mix of cloud access, on-premise-style systems, operating software, and chip foundry services gives it exposure not just to research demand, but also to the broader build-out of the quantum hardware stack.
Numbers that matter. Revenue is still very small at $10.0 million, and EBITDA was negative $80.0 million, which shows how early the commercial story remains. Gross margin was 30.0%, but operating margin was deeply negative at -5.8979, while return on equity was -0.5709 and return on assets was -0.1209. On growth, revenue rose 1.989 year over year, but trailing EPS was still -0.89, with next-year EPS estimated at -0.2033.
Recent momentum. Earnings execution has been mixed, with a 4-for-8 beat rate. The latest report on May 18, 2026 missed badly, with EPS of -0.0614 versus a -0.0356 estimate, a -72.5% surprise, although the prior two quarters both beat estimates. Analyst coverage is limited, but the average target is $29.2425 and the consensus score is 4.8333, reflecting optimism despite the weak composite quality profile.
What they do. D-Wave develops annealing quantum computing systems, related software, and cloud services. Its product set includes Advantage and Advantage 2 systems, the Leap quantum cloud service, Ocean open-source tools, and hybrid solvers that combine quantum and classical resources for enterprise-scale optimization problems.
Why it fits. D-Wave stands out because it is focused on annealing rather than gate-model quantum systems, giving investors exposure to a distinct corner of the market. Its emphasis on scheduling, routing, logistics, portfolio optimization, and industrial use cases makes it one of the more application-oriented pure plays in the theme.
Numbers that matter. Revenue was just $12.4 million, while EBITDA was negative $138.8 million, underscoring the gap between technical relevance and financial scale. Gross margin was a healthy 66.3%, but operating margin was -19.1487, with return on equity of -0.5527 and return on assets of -0.1178. The biggest red flag is growth: revenue declined -0.809 year over year, while trailing EPS was -1.14 and next-year EPS is still projected at -0.3847.
Recent momentum. D-Wave has beaten estimates in only 3 of its last 8 quarters, so earnings consistency has not yet arrived. The latest quarter was better, with EPS of -0.05 versus a -0.0631 estimate on May 12, 2026, a 20.8% positive surprise. Analysts remain constructive anyway, with a 4.5 consensus score, three Buy ratings, and an average target of $36.4387.
What they do. IonQ develops quantum computing systems and sells access to them through major cloud platforms including AWS Braket, Microsoft Azure Quantum, Google Cloud Marketplace, and its own cloud service. The company also works in quantum-safe communications and quantum detection systems, and generates revenue from hardware contracts, maintenance, support, and consulting tied to algorithm development.
Why it fits. Among the pure-play names, IonQ has one of the broadest commercial footprints because it is embedded across multiple hyperscaler ecosystems. That matters in quantum because cloud distribution, developer access, and enterprise experimentation are likely to be major channels for adoption before standalone quantum demand becomes large.
Numbers that matter. IonQ is much larger than most pure plays, with $187.1 million in revenue and a market cap of about $21.0 billion. Revenue growth was 7.547 year over year, and the company posted a 1.7488 net margin, though EBITDA remained negative at -$662.4 million and operating margin was -4.0176. The stock also looks expensive on trailing earnings, with a trailing P/E of 144.5128, and next-year EPS is estimated at -2.3667 despite trailing EPS of 0.39.
Recent momentum. IonQ has beaten estimates in 5 of the last 8 quarters, including two eye-catching upside surprises in 2026. On April 1, 2026 it reported EPS of 2.07 versus an estimate of -0.5125, a 503.9% surprise, after a 508.5% surprise in February. Analyst sentiment is positive but not unanimous, with a 4.4 consensus score, one Buy, one Hold, and an average target of $67.6369.
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What they do.AMD is a diversified semiconductor company spanning data center CPUs, GPUs, AI accelerators, embedded processors, FPGAs, adaptive SoCs, and networking products. While it is not a pure quantum company, its broad compute and programmable hardware portfolio makes it relevant to the infrastructure layer that advanced quantum systems and hybrid quantum-classical workloads may eventually require.
Why it fits. Quantum computing will not exist in isolation; it will depend on classical compute, acceleration, and control hardware. AMD’s exposure comes through data center silicon, GPUs, and especially FPGA and adaptive SoC products, which can matter in control, signal processing, and hybrid workflows around quantum systems.
Numbers that matter.AMD brings real scale, with $37.45 billion in revenue and $7.43 billion in EBITDA. Profitability is solid, including a 53.1% gross margin, 14.4% operating margin, and 13.37% net margin, while revenue growth was 37.8% year over year and earnings growth was 91.2%. The tradeoff is valuation: trailing P/E was 158.5017 and forward P/E was 68.0272, which is rich even for a fast-growing semiconductor leader.
Recent momentum.AMD has a respectable 4-for-7 beat rate in the recent record, with beats in each of the last three reported quarters before the next scheduled release. It delivered EPS of 1.37 versus 1.29 on May 5, 2026, a 6.2% surprise, after a 15.9% beat in February. Analysts lean constructive but measured, with 4 Buy ratings, 13 Holds, and an average target of $482.6875.
What they do. Honeywell is a large industrial technology company with businesses in aerospace technologies, industrial automation, building automation, and energy and sustainability solutions. Its relevance to quantum is indirect but credible: automation, sensing, controls, and advanced industrial systems are all part of the broader enabling environment that supports high-end computing and national-security technology programs.
Why it fits. In a quantum-themed portfolio, Honeywell offers a lower-volatility way to participate through industrial and aerospace exposure rather than through speculative pure-play hardware. Its mix of automation, sensing, software, and defense-adjacent end markets aligns well with the government and strategic-infrastructure tailwinds supporting quantum development.
Numbers that matter. Honeywell generated $37.66 billion in revenue and $8.53 billion in EBITDA, with a 36.9% gross margin, 21.0% operating margin, and 10.89% net margin. Return on equity was strong at 0.2426 and return on assets was 0.0595. Growth is steadier than spectacular, with revenue up 2.4% year over year while earnings growth was -41.9%, but the forward P/E of 20.2429 is more grounded than many names tied to advanced computing themes.
Recent momentum. Honeywell has beaten estimates in 6 of the last 7 completed quarters, which supports its place above the more speculative names. The latest report on April 23, 2026 delivered EPS of 2.45 versus 2.32, a 5.6% surprise, though January’s quarter was a notable miss at -78.9%. Analyst sentiment is balanced, with 2 Buy ratings, 13 Holds, and an average target of $248.2988.
What they do. L3Harris provides mission-critical aerospace and defense systems across space, communications, spectrum dominance, and missile solutions. Its offerings include satellite and payload capabilities, tactical radios, software, waveforms, satellite terminals, and integrated battlefield systems, making it a strategic-technology company rather than a direct quantum hardware developer.
Why it fits. Quantum is increasingly tied to defense, secure communications, sensing, and national-security priorities, and L3Harris sits squarely in that ecosystem. For investors who want exposure to the strategic spending wave around advanced computing and defense modernization, it offers a more established business model than the pure-play quantum names.
Numbers that matter. L3Harris produced $12.86 billion in revenue and $2.15 billion in EBITDA, with a 30.4% gross margin, 9.73% operating margin, and 10.37% net margin. Revenue growth was especially strong at 1.9 year over year, though earnings growth was slightly negative at -0.061. Valuation is not cheap, with trailing P/E of 32.899 and forward P/E of 26.738, but the company’s profitability and defense positioning help support the premium.
Recent momentum. Execution has been consistent, with 6 beats in the last 7 completed quarters. The April 30, 2026 report came in at EPS of 2.91 versus 2.57, a 13.2% surprise, following another beat in January. Analysts are constructive, with a 4.381 consensus score, 3 Buy ratings, 5 Holds, and an average target of $381.9474.
What they do. Alphabet operates Google Services, Google Cloud, and Other Bets, with revenue driven by advertising, subscriptions, devices, cloud infrastructure, AI solutions, cybersecurity, and enterprise software. For quantum investors, the key angle is not pure-play exposure but the company’s role as a hyperscale cloud and AI platform with the balance sheet and technical depth to support frontier computing initiatives.
Why it fits. Quantum computing is likely to reach customers through cloud environments before it becomes a mass-market hardware business, and Alphabet already owns one of the world’s largest cloud and AI ecosystems. That makes it a strong indirect play on quantum commercialization, especially as enterprises increasingly want advanced computing delivered as a service rather than as specialized infrastructure they manage themselves.
Numbers that matter. Alphabet combines scale and profitability better than almost anyone on this list: revenue was $422.5 billion, EBITDA was $161.3 billion, and net margin was 37.92%. Gross margin was 60.4% and operating margin was 36.12%, while revenue growth ran at 21.8% and earnings growth at 82.0% year over year. Even after that performance, valuation remains relatively reasonable for a mega-cap platform, with trailing P/E of 27.6346 and forward P/E of 25.7069.
Recent momentum. Alphabet has a perfect 7-for-7 beat streak in the recent history provided. Its latest quarter on April 29, 2026 was particularly strong, with EPS of 5.11 versus 2.63, a 94.3% surprise. Analysts remain positive, with 16 Buy ratings, 12 Holds, and an average target of $409.0029.
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This monthly list starts with U.S.-listed companies above $500 million in market capitalization that have direct quantum computing exposure or meaningful relevance to the quantum ecosystem. We then rank candidates by investment quality, emphasizing our composite quality grade, profitability, revenue and earnings trends, earnings-surprise consistency, and analyst consensus. Direct pure-play exposure helped inclusion, but not ranking on its own; stronger balance between thematic relevance and business durability ranked higher. Because market data and earnings results change over time, the list is refreshed regularly and should be read as a snapshot rather than a permanent hierarchy.
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