June 2026
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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. | $66 | +53% | $25B | $23B | 173.1x | (120.5x) | ||
| 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. | $480 | +112% | $12B | $12B | 5.2x | 24.8x | ||
| 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. | $28 | +89% | $10B | $10B | 394.4x | (135.3x) | ||
 | 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. | $83 | +107% | $8B | $8B | 177.1x | 932.7x | ||
| Rigetti Computing Inc is engaged in the business of full-stack quantum computing. The company offers full-stack quantum computing platform as a cloud service to a wide range of end-users, directly through its Rigetti QCS platform, and also through cloud service providers. Its proprietary quantum-classical infrastructure provides ultra-low latency integration with public and private clouds for high-performance practical quantum computing. The company has developed the industry's first multi-chip quantum processor for scalable quantum computing systems. Geographically, the company derives the majority of its revenue from the United States. | $24 | +104% | $8B | $8B | 1075.0x | (120.6x) | ||
| 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. | $35 | +435% | $6B | $6B | 73.6x | 263.3x | ||
| QuantumScape Corporation is an American company that researches and develops solid-state rechargeable lithium metal batteries for use in electric cars. It was founded in 2010 and is headquartered in San Jose, California, employs around 850 people. Major investors include Volkswagen Group and Bill Gates. | $9 | -- | $6B | $5B | - | (18.8x) | ||
| 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 | +32% | $4B | $3B | 27.2x | 83.8x | ||
| Infleqtion Inc develops and commercializes neutral atom-based quantum technology products through an integrated platform. Its offerings include quantum sensing, quantum computing, and related software solutions. The company's technologies are deployed across sectors such as defense and security, artificial intelligence, energy optimization, space applications, materials research, and cybersecurity. Its platform integrates core quantum technologies with hardware and proprietary software based on neutral atom systems. | $17 | -- | $4B | $3B | 113.0x | (88.5x) | ||
| 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. | $11 | -42% | $3B | $2B | 2260.0x | (112.8x) | ||
 | 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. | $5 | -- | $2B | $2B | - | - | ||
 | 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. | $4 | -9% | $819M | $399M | 21.9x | (24.3x) | ||
 | 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). | $238 | +205% | $681M | $666M | 16.9x | 58.9x | ||
| 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. Its products include PQScale, Keelung, Kenting, and Qbyte. PQScale is a novel scaling technique for post-quantum cryptographic primitives. Keelung is a zero-knowledge toolkit for fast, private, and secure applications. Kenting provides acceleration for NIST-compliant post-quantum cryptography, post-quantum zk-SNARKs, and eco-friendly mining hardware, and Qbyte is a quantum risk calculator. Geographically, the company derives maximum revenue from Canada, and also has a presence in Taiwan, and Australia. | $4 | -14% | $604M | $596M | 2625.5x | (33.7x) | ||
| Quantum eMotion Inc is dedicated to developing of a new generation of quantum-safe encryption for the quantum computing age. It is a developer of a new generation of cryptographic solutions under the acquisition of licenses. It allows clients and partners to develop secure quantum-safe encryption that can protect anything from consumer and enterprise devices like mobile phones, computers, the Internet of Things, and networking equipment to demanding cloud-based applications, servers, and military devices. | $3 | -- | $571M | $544M | - | - | ||
| 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 | -36% | $274M | $151M | 61.9x | (1.9x) | ||
| 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). | $16 | +58% | $231M | $355M | 1.3x | (37.2x) | ||
 | 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 | -56% | $143M | $154M | 1.4x | (10.5x) | ||
 | Archer Materials Ltd is a technology company with a focus on developing deep tech in the semiconductor industry. The group is developing and working towards commercialising semiconductor devices and sensors relevant to quantum computing, TMR sensors and lab-on-a-chip medical diagnostics. It engages in technology research and development of the carbon nano onion quantum material (12CQ Project), TMR sensor project and graphene-based lab-on-a-chip biosensing chip; utilising semiconductor development infrastructure and facilities, R&D, people, and IP, to support technology research and development. | $0 | +96% | $76M | $69M | - | - | ||
| 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. | $16 | -29% | $47M | $51M | 13.7x | (11.5x) | ||
| Median | $16 | +56% | $2B | $2B | 67.7x | (18.8x) |
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