October 2026
Largest Quantum Computing Public Companies
Benchmark revenue and EBITDA valuation multiples for public comps like
IonQ, Littelfuse, D-Wave Quantum, QuantumCTek and Rigetti.
 | IonQ Inc sells access to several quantum computers of various qubit capacities and is in the process of researching and developing technologies for quantum computers with increasing computational capabilities. The company currently makes access to its quantum computers available via cloud platforms and also to select customers via its own cloud service. This cloud-based approach enables the broad availability of quantum-computing-as-a-service (QCaaS). The company derives its revenue from its quantum-computing-as-a-service arrangements, consulting services related to co-developing algorithms on company's quantum computing systems and contracts associated with the design, development, and construction of specialized quantum computing systems together with related services. | $31 | -50% | $12B | $10B | 80.1x | (19.6x) | ||
| Littelfuse is a primary provider of circuit protection products (such as fuses and relays) for the transportation, industrial, telecommunications, and consumer electronics end markets. The company is also increasing its power semiconductor business, where it predominantly serves industrial end markets, and is breaking into electric vehicle charging infrastructure. Littelfuse has 17,000 global employees. | $384 | +58% | $9.8B | $9.8B | 4.1x | 57.0x | ||
| D-Wave Quantum Inc is in the development and delivery of quantum computing systems, software, and services, and it is the commercial supplier of quantum computers and the only company building both annealing quantum computers and gate-model quantum computers. It delivers customer value with practical quantum applications for problems as diverse as logistics, artificial intelligence, materials sciences, drug discovery, scheduling, cybersecurity, fault detection, and financial modeling. Its annealing quantum computers are accessible through the company's LeapTM cloud service. | $12 | -67% | $4.5B | $4B | 162.4x | (10.7x) | ||
 | Quantumctek Co Ltd is engaged in production, sales and technical services of quantum communication products. The company's products include Quantum-secure Communication Network Core Equipment; Quantum-secure Application Products; Operating System Software; Core Components; and Teaching Systems & Scientific Instruments. Its solutions, products, and services are used in government, financial and energy industry, ensuring long term quantum safety to numerous users. | $43 | -48% | $4.4B | $4B | 86.3x | 719.1x | ||
| Rigetti Computing Inc builds quantum computers and the superconducting quantum processors that power them. The Company sells 9-qubit to 108-qubit quantum computing systems under the Novera and Cepheus trade names. Through the Rigetti Quantum Cloud Services (QCS) platform, the Company's machines can be integrated into any public, private or hybrid cloud. The Company also operates in Fremont, California; London, United Kingdom; Adelaide, Australia; British Columbia, Canada and Mumbai, India. The Company's revenue is derived from operations in the United States and the United Kingdom. | $12 | -74% | $3.9B | $3.5B | 495.1x | (15.6x) | ||
| Optowide Technologies Co Ltd is engaged in the production and sales of various types of precision optical components and optical fiber devices. The products are mainly used in optical communications, fiber lasers and other fields. Other application fields include quantum information scientific research, biomedicine, consumer optics and others. | $20 | +84% | $3.7B | $3.8B | 42.8x | 155.2x | ||
| XtalPi Holdings Ltd is an research platform company powered by artificial intelligence (AI) and robotics. It is dedicated to driving intelligent and digital transformation in the life sciences and materials sciences sectors. The company combines quantum physics, AI, cloud computing, and large-scale robotics to provide research & development solutions, services, and products for pharmaceuticals, biotechnology, renewable energy, and materials industries globally. The company has single segment that is intelligent robotics solutions and drug discovery solutions (including one-stop drug discovery solutions). | $1 | -48% | $3.2B | $2.4B | 20.3x | 109.5x | ||
| QuantumScape is a developer of solid-state lithium-metal battery technology intended for electric vehicles and other energy-storage applications. The organization serves B2B customers and counterparties through the operating assets, products, or financial capabilities described in the cited transaction materials. Its principal economics are Product sales, Licensing, while its competitive position depends on sector expertise, asset quality, customer relationships, execution, and disciplined capital allocation. The business was founded in 2010 and is headquartered in San Jose. At the 2020 Series F date the company remained pre-commercial and used strategic capital to scale cell development and manufacturing preparations. The profile reflects the legal or operating business at the transaction date, including its historical identity where a subsequent listing, merger, privatization, disposal, or reorganization changed its name or ownership. | $4 | -79% | $2.4B | $1.6B | - | (4.1x) | ||
| Infleqtion is a quantum technology company that builds neutral atom quantum computers, optical atomic clocks, radio-frequency sensors and inertial sensors, together with the Superstaq quantum software platform. It began in Boulder in 2007 as ColdQuanta, founded by University of Colorado physicist Dana Anderson, and adopted the Infleqtion name in November 2022 as it moved from research hardware toward finished commercial products. The company is headquartered in Louisville, Colorado, with offices in Boulder, Chicago, Madison, Melbourne and Oxford. It raised a US$110 million Series B in 2022 and a US$100 million Series C in June 2025 backed by Counterpoint Global, Glynn Capital, S32, SAIC, In-Q-Tel, Breakthrough Victoria and others, with J.P. Morgan as sole placement agent. Its technology is deployed by NASA on the International Space Station, and it reported almost US$30 million of revenue for 2024 with a customer pipeline above US$200 million. Infleqtion trades on the New York Stock Exchange under the ticker INFQ. | $9 | -- | $2B | $1.5B | 52.3x | (28.9x) | ||
 | IQM Quantum Computers Oyj is engaged in superconducting quantum computing and provides quantum computing systems and cloud platform access to enterprises, research institutions, high-performance computing centers, and national laboratories. Its offerings include quantum systems based on an open and modular architecture. The company has operations in Munich, Germany, and deployments across Europe, Asia, and North America. | $9 | -- | $1.8B | $1.7B | 47.4x | (35.7x) | ||
| Quantum Computing Inc is an integrated photonics and quantum optics technology company that provides accessible and affordable quantum machines to the world today. Its products are designed to operate at room temperature and low power at an affordable cost. The Company’s portfolio of core technologies and products offer capabilities in the areas of high-performance computing, artificial intelligence, and cybersecurity, as well as remote sensing applications. | $6 | -62% | $1.5B | $520M | 762.6x | (15.1x) | ||
| Quantinuum is a quantum computing company headquartered in Broomfield, Colorado, with facilities in the United States, United Kingdom, Germany, Japan, Qatar and Singapore. It was formed in 2021 by combining Honeywell Quantum Solutions with Cambridge Quantum Computing. The company builds trapped-ion quantum computers based on the QCCD architecture and offers them alongside its own quantum software, middleware and cybersecurity applications as a full-stack platform. It reports the industry's highest average two-qubit gate fidelity as of 31 December 2025. Its customers include organisations in pharmaceuticals, materials science, financial services, and government and industrial markets. Venture and strategic investors in the company have included IBM Ventures, Honeywell, JPMorgan Chase, Amgen and Mitsui & Co. Quantinuum listed on the Nasdaq Global Market under the ticker QNT in June 2026, when an initial public offering of 28,000,000 Class A shares at USD 60.00 raised gross proceeds of USD 1.68 billion. | $35 | -- | $1.4B | $1.9B | 60.9x | (3.4x) | ||
 | Pasqal Holding SA builds and operates neutral-atom quantum computers and delivers a full software stack to industry, science, and governments. The group's production-ready systems are available both on-premises and through the cloud, enabling organizations to harness quantum computing without requiring in-house quantum expertise. A single hardware platform supports analog workloads today and is designed to evolve toward fault-tolerant quantum computing in the future. Its quantum computing systems are used by customers across energy, financial services, and materials to address complex challenges. The group's customers include Saudi Aramco, Credit Agricole CIB, and LG Electronics, and supported by partnerships with NVIDIA and IBM. | $6 | -- | $1.3B | $1.2B | 62.3x | (12.9x) | ||
 | Xanadu Quantum Technologies Inc specializes in designing photonic devices and the platforms around them, including the experimentation and development of quantum computers available on the cloud with supporting software, along with quantum simulators and other related products and offerings. | $3 | -- | $852M | $596M | 180.6x | (12.8x) | ||
 | Creotech Instruments SA is a provider of advanced space technologies, specialized electronics, and hardware with global applications in areas such as quantum computers, quantum cryptography, quantum physics, and high energy physics laboratories. Its five primary business segments are: NewSpace dedicated to developing a satellite platform and its components; Earth Observation dedicated to developing Earth Observation systems and UAV technology (Unmanned Aerial Vehicle); Science dedicated to developing specialized electronics and components for quantum computers and time synchronization systems; Production dedicated to the manufacture of electronics; ESA Projects dedicated chiefly to projects carried in partnership with or/and commissioned by the European Space Agency (ESA). | $219 | +109% | $766M | $765M | 20.7x | 75.9x | ||
| Quantum Corp is a United States-based company that delivers end-to-end data management solutions designed for unstructured data in the era of artificial intelligence (AI). It provides one of the comprehensive and cost-efficient solutions for the entire data lifecycle. The group provides solutions for video, images, audio, and other large files because this unstructured data represents. Its portfolio of products includes primary storage software and systems, secondary storage software and systems, as well as devices and media. The group operates in three geographic regions: Americas, Europe, the Middle East, and Africa (EMEA), and Asia Pacific (APAC). | $18 | +94% | $722M | $676M | ||||
 | Horizon Quantum Holdings Ltd focuses on developing software tools that simplify and accelerate the creation of applications for quantum computers and also provide quantum computing services on an individual basis. The company's flagship product, Triple Alpha, is a web-based integrated development environment (IDE) that allows developers to write quantum software using familiar classical programming languages. | $13 | -- | $714M | $601M | ||||
| Hydrograph Clean Power Inc is engaged in the acquisition and development of graphene and hydrogen-related products and services. The company's products include Fractal graphene and Reactive Graphene. | $2 | -32% | $693M | $655M | ||||
 | SEALSQ Corp develops certified secure microcontrollers and implements post-quantum cryptography. The company develops solutions including post-quantum microchips and devices that can be used in a variety of applications, from multi-factor authentication, home automation, and IT network infrastructure to automotive, industrial automation, and control systems. The company's vaultIC range offers a set of ready-to-use secure elements designed to implement embedded security for any kind of device with fast time-to-market and high flexibility. The company's products include VaultIC155, VaultIV18x, VaultIC292, and VaultIC40x. The company generates a majority of its revenue from North America, while it also has its presence in Europe, Middle East & Africa, Asia Pacific, and Latin America. | $2 | -77% | $376M | - | ||||
| BTQ Technologies Corp is engaged in the development of computer-based technology related to post-quantum cryptography, particularly as it applies to blockchain and related technologies, and their protection from the emerging security risk of quantum computing. The company derives revenue from Software licensing. Geographically, the company has a presence in Canada, Taiwan, Australia, and the United States. | $2 | -71% | $319M | $313M | ||||
| Quantum eMotion Corp is a technology development company focused on developing and commercializing intellectual property in quantum-based cryptographic and cybersecurity solutions. The company delivers quantum-based security solutions in software and hardware that embed true quantum randomness at the chip level. Its software offerings include Sentry-Q for securing data across networks and applications; eFlux-Q, a cloud-based entropy distribution system for cryptographic systems and key generation; eCrypto-Q, a developer toolkit combining electron-based QRNG and post-quantum cryptography; and eHot-Q, a quantum-safe hot wallet SDK for digital asset protection. Its hardware solution includes eCore-Q, an electron-based QRNG providing high-speed entropy for cryptographic, AI, and IoT systems. | $1 | -- | $260M | $236M | ||||
| Creotech Quantum SA is a Polish company specializing in the design and delivery of engineering solutions for the science sector, critical infrastructure, industry, and the emerging quantum economy. The company focuses on developing technologies that will underpin future quantum infrastructure - from quantum processor control systems and error correction to solutions enabling secure quantum communication. The company is divided into five business segments: Sinara Ecosystem / ARTIQ, MTCA Systems, White Rabbit, Advanced cameras with sCMOS sensors, and Quantum Key Distribution (QKD) System. | IoT+1 | $54 | -- | $253M | $232M | |||
| Quantum-Si Inc is a life sciences company focused on the development and commercialization of proteomics research tools. The company has designed and developed a hardware, consumable, and software solution to provide a solution for protein detection and analysis. It has developed a proprietary universal single-molecule detection platform that enables Next-Generation Protein Sequencing (NGPS), the ability to sequence proteins. | $1 | -49% | $239M | $130M | ||||
 | ParTec AG develops and supplies super and quantum computers as well as operating software, including consulting and support services, which is used for the development, construction and operation of state-of-the-art high-performance computers (HPC) and quantum computers (QC). | $18 | +14% | $142M | $149M | ||||
 | Delta Gold Technologies PLC focuses on the development of intellectual property targeted towards the quantum computing space. The company is developing, under an exclusive license, intellectual property (IP) targeted towards the quantum computing space. This technology will be centered around the use of nano-scale gold and other nano-engineered materials. | $1 | -- | $99M | $98M | ||||
| Quantum Cyber NV is focused on building a diversified platform at the intersection of quantum computing and cybersecurity. It aims to secure critical infrastructure and data against these emerging threats. | $1 | -27% | $94M | $81M | ||||
| XTPL SA is a technology company. The company is engaged in developing technology enabling ultra-precise printing of nanomaterials. It operates in the nanotechnology and microelectronics segment. The company solution will revolutionize many industry sectors such as printed and flexible electronics, solar cells, transparent conductive films, or open defect repair. | $19 | -6% | $55M | $55M | ||||
 | Archer Materials Ltd is a quantum technology company operating in the semiconductor industry. The company is developing semiconductor devices, including chips for quantum computing, sensing, and medical diagnostics. Its principal activities include technology research and development of the 12CQ Project, TMR sensor project, and Biochip; utilising semiconductor development infrastructure and facilities, R&D, people, and IP to support technology research and development; internationally protecting and prosecuting intellectual property; and collaborating and partnering with organisations in computing, deep tech, technology research and development, and manufacturing. The Group operates in one segment: materials technology research. | $0 | -60% | $35M | $29M | ||||
| Median | $9 | -48% | $809M | $676M | 71.2x | (12.8x) |
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