Quantinuum at a glance
As of- [1] Market cap: stockanalysis.com, September 4, 2026
- [2] Founded: Wikipedia (retrieved September 6, 2026)
- [3] Headquarters: Wikipedia (retrieved September 6, 2026)
Quantinuum profile
written 2026-10-24Quantinuum is a trapped-ion quantum computing company that went public on Nasdaq in June 2026, raising $1.68 billion at $60 a share.
What Quantinuum does
Quantinuum describes itself as a full-stack quantum computing company. It builds quantum computers on the QCCD architecture, a trapped-ion design, and says its machines reached the highest accuracy in the industry by average two-qubit gate fidelity as of December 31, 2025. That is the company's own claim, made in its IPO press release, not an independent ranking.[1],[2]
The company says it has active engagements in pharmaceuticals, material science, financial services, and government and industrial markets. Its product line includes the Helios system, which it sells as hardware-as-a-service on-premise or in the cloud, the InQuanto software for computational chemistry, and the Nexus cloud platform for building and running quantum applications.[1],[3],[2]
History
Quantinuum was formed in 2021 by combining Honeywell's quantum computing unit with Cambridge Quantum. Its headquarters is in Broomfield, Colorado, with additional facilities across the United States, United Kingdom, Germany, Japan, Qatar and Singapore.[4],[1]
Before the IPO the company raised from a mix of strategic and financial backers. Quantum Insider reported that existing shareholders took part in a February 2024 raise and again in the 2025 round described below.[5]
Funding
Quantum Insider reported that Honeywell and Cambridge Quantum, controlled by founder Ilyas Khan, remained the largest shareholders after that round, with estimated stakes of about 53% and 36%. Those are the outlet's estimates, not company disclosures, and they predate the IPO. This profile does not have a verified post-IPO ownership table.[5]
IPO and ownership
Electronics Weekly reported that the market capitalization was $15.7 billion at the close of the first trading day. The same article said first-quarter revenue had fallen 73% to $5.24 million from $19.1 million a year earlier, with a first-quarter net loss of $136.5 million, and that the U.S. Department of Commerce had made a $100 million Chips Act award to the company the month before.[4]
Results since the IPO
Customers and partners
The company said its Nexus platform is used by 180 organizations. It announced a partnership with Oracle to deploy Helios inside an Oracle Cloud Infrastructure AI data center, and a collaboration with HPE on combining quantum computing with high-performance computing and AI.[2]
Earlier partnerships named in the 2025 release include NVIDIA, as a founding collaborator at the NVIDIA Accelerated Quantum Research Center, RIKEN, SoftBank Corp., Infineon and STFC Hartree Centre, plus expansions into New Mexico, Qatar and Singapore. In Qatar, a joint venture was selected to deliver quantum infrastructure as part of Qatar's $1 billion investment over the next decade.[3]
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Company Snapshot
Quantinuum is a quantum computing company, based in Cambridge, United Kingdom / Broomfield, Colorado, USA, founded 2021 by Ilyas Khan.
Recent changes
- Sep 4, 2026Sep 4, 2026First reported market cap: $13.07B stockanalysis.com
- Jun 4, 2026Jun 4, 2026First reported valuation: $17.6B (Nasdaq debut valuation) Wikipedia
Investors
Latest Pulse
- Jul 7, 2026NA Startup Funding Shatters Records in H1 2026North American startups raised $392 billion in the first half of 2026, an all-time record, with roughly 80% of Q2 investment dollars flowing to AI-focused companies as capital concentrates in an ever-smaller set of megadeals.→
- Jun 29, 2026SeeQC Files S-1 for Nasdaq IPO to Fund Digital Quantum Computing ChipsSeeQC, which builds digital quantum-computing infrastructure, filed a Form S-1 to list on the Nasdaq Global Market under ticker 'SEQC,' paired with a $65 million PIPE financing that values the combined entity at roughly $1 billion. The company integrates superconducting single-flux-quantum logic with cryogenic CMOS to shrink the wiring and heat load of quantum systems -- reporting $4.2 million in 2025 revenue against a $12.2 million net loss.→
- Jun 29, 2026SeeQC Files S-1 as Quantum Computing IPO Wave Widens Beyond IonQ and D-WaveDigital quantum computing firm SeeQC filed an S-1 on June 29, becoming one of the first pure-play quantum specialists to file since the 2021 SPAC rush. SeeQC's superconducting chips integrate quantum bits directly with classical control electronics, targeting scalable systems that competitors say require room-scale cabinets today.→
- Jun 29, 2026Q2 2026 Delivers the Most Billion-Dollar Startup Exits Since the 2021 PeakStartup exits worth $1 billion or more were more numerous in Q2 2026 than at any point since the 2021 market peak, according to Crunchbase data -- powered by SpaceX's record IPO (a $2.1 trillion first-day market cap on $75 billion raised), Cerebras's and Quantinuum's debuts, and SpaceX's $60 billion acquisition of Cursor. The quarter signals the long-frozen exit window has decisively reopened for late-stage tech.→
- Jun 29, 2026Crunchbase: Q2 2026 Delivered the Most Billion-Dollar Startup Exits Since the 2021 PeakCrunchbase data published June 29 shows venture-backed startup exits valued at $1 billion or more hit their highest count in Q2 2026 since the 2021 market peak, headlined by SpaceX's roughly $2.1 trillion first-day market cap IPO and SpaceX's subsequent $60 billion all-stock acquisition of Cursor — the priciest purchase of a private, venture-backed startup ever, nearly double Google's $32 billion Wiz deal.→
- Jun 29, 2026Q2 2026 Delivered the Most Billion-Dollar Startup Exits Since 2021Q2 2026 produced the most billion-dollar startup exits since the 2021 boom, led by SpaceX's blockbuster IPO and its record $60 billion purchase of Cursor parent Anysphere, according to Crunchbase data. While exit counts still trail the 2021 peak, the sheer size of deals -- with Anthropic and OpenAI now filing to test the trillion-dollar mark -- is the defining feature of the reopened liquidity window.→
- Jun 24, 2026New Paper Argues Microsoft Exaggerated Its 'Majorana 1' Quantum BreakthroughA new paper argues that Microsoft overstated the quantum-computing claims it made roughly a year ago with its Majorana 1 chip, which the company touted as a breakthrough toward topological qubits. The dispute reignites long-running skepticism among physicists about whether Microsoft actually demonstrated the exotic particles its approach depends on.→
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Quantinuum FAQ
What is Quantinuum's market cap?
Quantinuum's market capitalization was $13.07B as of September 4, 2026, according to stockanalysis.com.
Is Quantinuum publicly traded?
Yes. Quantinuum trades under the ticker QNT, with a market cap of $13.07B (September 4, 2026, stockanalysis.com).
When was Quantinuum founded and where is it based?
Quantinuum was founded in 2021 and is headquartered in Cambridge, United Kingdom / Broomfield, Colorado, USA, according to Wikipedia.
Sources & methodologyshow
Where these figures come from
- stockanalysis.comresearch database1 fact
Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.