What Quobly’s $134M Series A Signals for Industrial Silicon Quantum Computing
A massive Series A in silicon quantum computing, backed by industrial and sovereign capital, suggests Quobly is being financed less like a research-stage quantum startup and more like a semiconductor infrastructure company.
Context
On June 3, 2026, Quobly announced a €115M Series A, roughly $134M, to industrialize silicon-based quantum computers and bring its first commercial product to market by the end of 2026. The round was led by Bpifrance, SEALSQ, and STMicroelectronics, with participation from the European Innovation Council Fund, Blast, ALIAD/Air Liquide Venture Capital, and Innovacom. Existing shareholders include CEA, CNRS, Quantonation, and Supernova Invest.
The interesting part is not just the size. It is the shape of the thesis. Quobly is arguing that fault-tolerant quantum computing will not scale through bespoke lab hardware alone. It will scale through silicon spin qubits, existing semiconductor infrastructure, 300 mm FD-SOI processes, and systems that can be deployed through cloud and HPC environments. The company reports more than 2.4M qubits fabricated at STMicroelectronics, 65 patents filed, more than 90 experts, four global locations, and a target to grow from roughly 100 employees to 200 after Series A.
That makes the round a category signal. In the last six months, Quantum Motion, Quobly, Equal1, Diraq, and Silicon Quantum Computing all raised or received meaningful financing. The visible category capital is concentrated around a few companies that can credibly combine quantum hardware, semiconductor manufacturing, cryogenic infrastructure, and commercial system deployment. The tension is obvious: Quobly now looks much better capitalized, but manufacturing credibility is not the same as useful logical qubits, customer-validated performance, or paid quantum workloads.
Quobly's $134M Series A: What's Really Happening
You’ve seen 5% of the analysis on this page. The other 95% is in this investor memo.
It is designed to answer the questions you have:
- why they raised now
- what investors saw that you didn’t
- whether this is noise or the start of something much bigger
Q1What are some interesting signals regarding the size of Quobly’s Series A round?
Quobly’s Series A is a massive round for its stage, even though it is not the largest latest round among direct competitors. Using the public €115M figure, roughly $134M, Quobly ranks second among direct industrial silicon quantum competitors’ latest rounds, behind Quantum Motion’s $160M Series C announced in May 2026.
That ranking undersells the signal. Quantum Motion raised more, but at Series C. Quobly raised nearly the same order of magnitude at Series A. A $134M Series A sitting at 84% of a direct competitor’s $160M Series C is an aggressive financing signal.
Against the rest of the direct competitor group, Quobly is far ahead. Equal1 raised about $60M in January 2026, so Quobly raised about 2.2x as much. SemiQon’s latest round was about $15.7M. Diraq and Silicon Quantum Computing each had recent strategic funding around $14M. The median latest direct competitor round is about $15.7M, making Quobly’s Series A roughly 8.5x the median.
If the $150M headline is used instead of the public $134M-equivalent figure, the conclusion barely changes. Quobly is still second behind Quantum Motion, closer to parity with Quantum Motion, and roughly 2.5x Equal1. The useful signal is not the exact FX-adjusted dollar amount. The useful signal is that Quobly raised an infrastructure-scale Series A.
Compared with recent quantum Series A-style rounds, Quobly is also near the top. A broad comparable set includes QuEra at $230M, Quantum Art at $140M, Quobly at about $134M, Quantum Art’s earlier $100M round, eleQtron at about $65M, Equal1 at $60M, QpiAI at $32M, QuamCore at $26M, QuiX Quantum at about $17.5M, and SemiQon at $15.7M.
The median of that broad set is about $62.5M if QuEra is included. Quobly is roughly 2.1x that median. If QuEra is excluded because its structure is less comparable, the median falls to about $46M, making Quobly about 2.9x the median.
That is a real stage signal. Quobly is not being financed like a company still asking whether its market exists. It is being financed like a company that needs to compress productization, industrialization, hiring, and go-to-market deployment into one large push.
The round is not one of the largest venture rounds across all industries recently. That point is not very useful for interpreting Quobly because AI and infrastructure mega-rounds distort the global market. The better comparison is category-specific: inside industrial silicon quantum computing, this is one of the largest and most important rounds of the last two years.
The round size also changes Quobly’s competitive posture. Before the Series A, Quobly looked credible but undercapitalized versus some peers. After the Series A, it sits near the top of the silicon quantum funding stack. That matters because this category will punish underfunded companies. The winners need chip runs, process integration, cryogenic infrastructure, control systems, software teams, commercial deployment, and long-cycle customer development.
The size of the Series A also signals urgency. Investors are not funding a slow research path. They are funding a move toward first commercial systems, cloud deployment in 2026, HPC deployment in 2027, and international expansion. That is why the round feels more like a semiconductor scale-up financing than a normal venture Series A.
We go deeper on this point in our full memo.
Methodology note Round-size comparisons use the public €115M Series A figure, converted to roughly $134M for comparability. Direct competitor latest-round comparisons are limited to industrial silicon quantum companies with comparable disclosed financing data. See full methodology below.
Q2How well-funded is Quobly today compared with its competitors?
Quobly is now one of the best-funded direct competitors in industrial silicon quantum computing. After its €115M Series A, Quobly has roughly $180M in estimated cumulative disclosed funding, based on its €19M 2023 seed, €21M 2025 Q100T package, and €115M 2026 Series A.
That likely places Quobly second among the direct competitor group. Quantum Motion is estimated around $219M. Quobly is around $180M. Diraq is reported above $150M including government funding. Silicon Quantum Computing is around $147M. Equal1 has at least $60M from its latest public round. SemiQon is around $15.7M to $18M.
The Series A changed Quobly’s rank materially. Before the round, Quobly had roughly €40M disclosed, or about $46M, which likely placed it around fifth among six direct competitors. After the round, Quobly likely moved to second. That is a major capital-status upgrade.
This does not make Quobly dominant. Quantum Motion still appears better funded, and Diraq and Silicon Quantum Computing remain close enough to be serious. But it does put Quobly into the small group with enough capital to fund industrial execution instead of merely technical progress.
Quobly also appears to be raising capital faster than peers. Founded in 2022, it has reached roughly $180M in disclosed funding in about four years, or about $41M per year. Diraq, also founded in 2022, is around $150M+, or about $34M per year. Quantum Motion, founded in 2017, is around $219M, or about $23M per year. Silicon Quantum Computing, also founded in 2017, is around $147M, or about $16M per year.
That makes Quobly the fastest-capitalizing company in the direct competitor group on a funding-per-year basis. This is a strong signal, but also a demanding one. Fast capitalization raises expectations. Quobly now has to execute like a company that has pulled future rounds forward.
The round cadence also shows clear acceleration. Quobly raised €19M in July 2023, then €21M in May 2025, then €115M in June 2026. The first step-up was only about 1.1x. The second was about 5.5x. The time between financings also shortened from about 21.6 months to about 13.1 months.
That acceleration makes sense. The company moved from architecture development to a 100-qubit chip program to commercial systems and industrial scale-up. Capital intensity increased because the roadmap became more expensive.
Quobly is also heavily funded relative to headcount. With around 100 employees and about $180M in estimated cumulative funding, Quobly has roughly $1.8M in funding per employee. That is high, but it fits the category. In silicon quantum, the money is not just buying engineers. It is buying process access, chip fabrication, cryogenic hardware, test infrastructure, packaging, control electronics, patents, facilities, and industrial partnerships.
The company’s careers page also says it targets 200 employees after Series A. That is a major operating signal. Quobly is not just adding capital to the balance sheet. It is trying to double execution capacity as it moves toward commercial deployment.
The read is clear: Quobly is now funded like a top-tier industrial silicon quantum company. It is not obviously the funding leader, but it is no longer a challenger trying to keep pace with better-capitalized peers. It has enough money to compete. The harder question is whether it can convert that capital into working systems, customer proof, and defensible manufacturing advantage.
It’s actually something we elaborate on in our full memo.
Methodology note Cumulative funding estimates combine disclosed historical Quobly financing with disclosed or reported competitor financing where comparable data is available. Lower-bound figures are used where sources disclose “more than” or package-style funding. See full methodology below.
Q3What is the current funding activity in the industrial silicon quantum computing systems category?
Funding activity in industrial silicon quantum computing systems has accelerated sharply in 2026. Five category companies raised in the last six months: Quantum Motion, Quobly, Equal1, Diraq, and Silicon Quantum Computing. Over the last 24 months, the category adds SemiQon, bringing the total to six disclosed funded companies.
The category is narrow and should stay narrow. It includes companies building quantum computers, QPUs, or core enabling silicon/CMOS quantum hardware using silicon spin qubits, CMOS-compatible devices, FD-SOI or CMOS manufacturing, cryo-CMOS, or data-center/HPC-deployable silicon quantum systems. It does not include trapped-ion, photonic-only, neutral-atom, superconducting-only, pure software, quantum sensing, networking, or post-quantum cryptography.
The last six months produced the real category break. Quantum Motion raised $160M in May 2026. Quobly raised about $134M in June 2026. Equal1 raised about $60M in January 2026. Diraq received about $14M in February 2026 as part of its broader financing path. Silicon Quantum Computing received about $14M in March 2026.
That is five funded companies and roughly $382M in six months. Over 24 months, total disclosed category capital is roughly $398M. In other words, almost all recent category capital arrived in 2026. This is not a slow, steady market. It is a market that suddenly repriced.
Quobly captured about 33.7% of all category capital raised over the last 24 months. It ranks second. Quantum Motion ranks first with $160M, or about 40.2% of category capital. Equal1 ranks third with $60M, or about 15.1%.
The category is extremely concentrated. Quantum Motion, Quobly, and Equal1 captured about 89% of last-24-month category capital. That tells a lot about investor behavior. Investors are not spreading small checks evenly across the field. They are concentrating capital around a few companies that can credibly claim semiconductor manufacturing leverage, system-level ambition, and deployment relevance.
Deal activity also accelerated. The last six months had five category rounds. The previous six months had none. The last 12 months had five category rounds. The previous 12 months had one. That is a sharp change in investor appetite.
Capital deployment accelerated even harder. The latest 12 months brought roughly $382M into the category versus about $15.7M in the previous 12 months. That is roughly a 24x increase. For a category this technical and capital-intensive, that is a major investor-belief shift.
The geographic split is also telling. The visible category activity is concentrated in Europe and Australia: Quobly in France, Quantum Motion in the UK, Equal1 in Ireland, SemiQon in Finland, and Diraq and Silicon Quantum Computing in Australia. This category is deeply tied to sovereign technology agendas. It is about quantum computing, but also about semiconductor capability, strategic compute infrastructure, and national industrial positioning.
The current funding market is therefore very favorable for the best-positioned companies and probably brutal for everyone else. Capital is flowing, but it is flowing to a small number of credible industrial players. Quobly is clearly in that funded elite.
Methodology note Category funding activity is calculated from disclosed announcement dates inside the retained industrial silicon quantum computing systems category. Capital concentration sums disclosed round amounts over the relevant six, twelve, and twenty-four-month windows. See full methodology below.
Q4How strong is the thesis behind Quobly’s Series A?
The thesis behind Quobly’s Series A is strong because it sits at the intersection of three investor beliefs that are gaining momentum: quantum hardware needs manufacturability, silicon is a credible scaling route, and future quantum systems must fit into cloud and HPC infrastructure. Quobly’s round is one of the clearest European expressions of that thesis.
The closest similar-thesis companies are Equal1 and Diraq. Equal1 raised about $60M in January 2026 to scale silicon-based quantum computers and deploy its Bell-1 data-center-ready quantum server. The overlap with Quobly is very high: silicon quantum, semiconductor manufacturing advantages, compact systems, and data-center deployment.
Diraq is the other close comparable. It raised or reported a broader $75M Series A path, including a February 2026 strategic equity component, to commercialize silicon quantum computing using modified silicon transistors and CMOS-style scaling. That is very close to Quobly’s logic: use the semiconductor supply chain to make quantum computing scalable and commercially usable.
There are six similar-thesis companies excluding Quobly in the last 12 months: Equal1, Diraq, eleQtron, PsiQuantum, QuamCore, and QuiX Quantum. Equal1 and Diraq are the direct silicon comparables. eleQtron is trapped-ion but similar on industrial scaling and cloud access. PsiQuantum is photonic but similar on semiconductor-scale infrastructure and million-qubit ambition. QuamCore is superconducting but similar on the scaling bottleneck. QuiX is photonic and similar mainly on near-term commercialization timing.
Including Quobly, similar-thesis companies raised about $1.38B over the last 12 months. That number is heavily shaped by PsiQuantum’s $1B Series E, so the better non-outlier read is that several companies are raising meaningful rounds around the same broad idea: quantum hardware is moving from lab validation to industrial systems engineering.
Quobly ranks second in the 12-month similar-thesis set by amount raised. PsiQuantum is first with $1B. Quobly is second with about $134M. Diraq follows with $75M, eleQtron with about $67M, Equal1 with $60M, QuamCore with $26M, and QuiX with about $17.5M.
That ranking matters. Quobly is not a small participant in the thesis. It is one of the largest financings in the global industrialized quantum hardware theme and one of the clearest Series A-scale validations in Europe.
The thesis also has real-world support. Quobly’s December 2025 manufacturing milestone with Soitec and ST put enriched silicon-28 FD-SOI substrates inside a 300 mm fab process. Equal1’s January 2026 funding round validated the silicon quantum server angle. Diraq’s 2026 financing validated the silicon transistor and CMOS-style scaling path. PsiQuantum’s $1B round validated the idea that investors will finance quantum companies as infrastructure-scale manufacturing platforms.
The bullish interpretation is that quantum computing is entering its semiconductor moment. The market is starting to reward companies that can answer the hardest industrial questions: Who manufactures the chips? What process is used? How does the system scale? Where will customers access it? How does it fit into cloud or HPC infrastructure?
Quobly answers those questions better than most early-stage quantum companies. It has STMicroelectronics, Soitec, FD-SOI, 300 mm fab language, cloud and HPC roadmap language, and a cap table built around industrialization.
The bearish interpretation is still important. Manufacturing credibility is not the same as useful logical qubits. Fabricating millions of qubits is a powerful signal, but the market ultimately needs fidelity, error correction, stability, software integration, customer workloads, and paid usage. Quobly is strong on the manufacturing story. It still has to prove the computing story.
No strong cross-sector analogue should be forced. There are loose comparisons in photonic AI chips, advanced packaging, fusion, space hardware, and other deeptech infrastructure markets, but none matches Quobly’s specific thesis tightly enough: using semiconductor manufacturing to industrialize quantum processors and deploy them into cloud and HPC infrastructure.
The conclusion is confident but not euphoric. Quobly’s Series A thesis is strong because it is backed by category momentum, similar financings, strategic investors, and manufacturing-chain visibility. It is not complete because customer traction and useful fault-tolerant performance remain the next proof points. Quobly has earned the right to attempt the industrial scale-up. Now it has to prove that industrial scale-up creates commercially valuable quantum computing.
If you want to understand why these investors decided to bet on this, get our full memo.
Methodology note The similar-thesis set includes companies whose round narrative is more than 80% aligned with Quobly’s retained thesis around manufacturable quantum hardware, infrastructure-scale systems, cloud or HPC access, and commercial deployment. See full methodology below.
Quobly's $134M Series A: What's Really Happening
You’ve seen 5% of the analysis on this page. The other 95% is in this investor memo.
It is designed to answer the questions you have:
- why they raised now
- what investors saw that you didn’t
- whether this is noise or the start of something much bigger
Read more
§
Methodology, Sources & Disclosure
TimingAll timing comparisons in this note are measured as of June 3, 2026. Funding-round time windows refer to announcement dates, not legal close dates, unless a close date is separately disclosed. Quobly’s Series A announcement says the company announced the closing on June 3, 2026, but no separate legal close date is used for the timing analysis.
Investment thesisThe retained investment thesis behind Quobly’s Series A is that fault-tolerant quantum computing will scale through silicon spin qubits manufactured on existing semiconductor infrastructure, especially 300 mm FD-SOI processes, then packaged into cloud-accessible and HPC/data-center-deployable systems. This thesis was retained because Quobly framed the round around R&D, industrialization, international commercial expansion, silicon processor scale-up, and deployment of first Alloy systems into customer cloud and HPC environments.
Category definitionThe category used for market-activity analysis is industrial silicon quantum computing systems. It includes companies developing quantum computers, QPUs, or core enabling silicon/CMOS quantum hardware using silicon spin qubits, CMOS-compatible devices, FD-SOI or CMOS manufacturing, cryo-CMOS, or data-center/HPC-deployable silicon quantum systems. It excludes trapped-ion, photonic-only, neutral-atom, superconducting-only, pure software, quantum sensing, networking, post-quantum cryptography, and general cloud access platforms that aggregate third-party quantum computers.
Competitor setThe direct competitor set used for funding comparisons includes Quantum Motion, Diraq, Equal1, SemiQon, and Silicon Quantum Computing. These companies were retained because they are building silicon, CMOS, silicon-spin, or semiconductor-compatible quantum computing hardware or systems. IonQ, Quantinuum, IQM, Rigetti, Oxford Quantum Circuits, PsiQuantum, Pasqal, QuEra, eleQtron, QuamCore, QuiX Quantum, and QpiAI were excluded from the direct competitor set where their primary qubit modality, architecture, or business focus is materially different, although some are used in broader Series A-style or similar-thesis comparisons. Competitor funding rankings include only private or venture-backed companies with comparable disclosed financing data.
Similar-thesis setThe similar-thesis set includes companies whose round narrative is more than 80% aligned with Quobly’s retained thesis around manufacturable quantum hardware, industrial systems engineering, cloud or HPC access, and first commercial deployments. The retained peer rounds are Equal1’s about $60M January 2026 round, Diraq’s reported $75M Series A path, eleQtron’s about $67M May 2026 Series A, PsiQuantum’s $1B Series E, QuamCore’s $26M Series A, and QuiX Quantum’s about $17.5M Series A.
Capital concentrationCategory capital concentration is calculated by summing disclosed funding rounds in the retained category set over the relevant period. When round amounts are disclosed as “more than” a given figure, concentration figures are treated as approximate and use the disclosed lower bound. FX-adjusted dollar figures are used for comparability, but the analysis treats them as directional rather than exact accounting values.
SourcesWe selected these sources because they come either from direct company announcements, which are the primary source for funding, product, governance, roadmap, and corporate milestones, or from tier-1 / authoritative publications, which provide independent validation, sector context, and comparable market signals: Quobly Series A announcement, Quobly homepage with metrics and positioning, Quobly company and roadmap page, Quobly careers page, Quobly open jobs page, Quobly and STMicroelectronics partnership, Quobly, Soitec, and ST 300 mm fab milestone, Quobly leadership and governance appointments, Quobly and SEALSQ collaboration, Quobly news archive, Data Center Dynamics on Quobly’s Series A, Tech.eu on Quobly’s Series A, Silicon Republic on Quobly’s Series A, TMCNet / PRNewswire mirror of Quobly’s Series A, SEALSQ investor release on its participation, Data Center Dynamics on Quobly’s 2025 Q100T financing, EE Times Europe on Quobly’s 2023 seed, Quantonation on Quobly’s 2023 seed, Quantum Insider on Quobly’s 2025 governance appointments, Soitec on the 28Si FD-SOI and ST 300 mm fab milestone, EU-Startups on Equal1’s 2026 round, Diraq company positioning, SEALSQ announcement of potential strategic investment and acquisition of Quobly.
DisclosureWe are not affiliated with Quobly, its investors, or the named comparable companies. No payment, consideration, or commitment of future business has been received from Quobly, its investors, or any named comparable company in connection with this note. Nothing herein constitutes investment advice or an offer to transact in any security.
Quobly's $134M Series A: What's Really Happening
You’ve seen 5% of the analysis on this page. The other 95% is in this investor memo.
It is designed to answer the questions you have:
- why they raised now
- what investors saw that you didn’t
- whether this is noise or the start of something much bigger