Horizon Quantum (HQ) Q3 2026 earnings review
Horizon Quantum advances its quantum software, but cash burn accelerates
Horizon Quantum, a maker of software tools for quantum computers, expanded its technical capabilities while its cash burn sped up. Third-quarter operating losses widened to $10.5 million on hiring and public-company overhead, pulling cash down by $10.5 million to $102.8 million as the pre-revenue group also paid for hardware. Reported net income of $33.4 million came entirely from a non-cash accounting gain on warrant liabilities, while chief executive Dr. Joe Fitzsimons announced a preliminary agreement to buy error-correction specialist Entropica Labs.
| Operating loss | $10.5M $7.2M last quarter and $4.9M a year ago |
|---|---|
| EBITDA loss, excluding one-offs | $6.3M $5.5M last quarter and $3.0M a year ago |
| Cash and cash equivalents | $102.8M down $10.5M from last quarter |
| Planned Entropica Labs acquisition | $27M payable in Class A ordinary shares (non-binding) |
⚖️ Verdict: 🔴 Bearish
The story got worse because quarterly spending broke well above the $7.2 million baseline management set three months ago, and the company still brings in no revenue. By our math, free cash flow reached negative $12.6 million in the quarter as rising payroll met ongoing equipment outlays. On the positive side, the engineering team linked its software to Oxford Quantum Circuits hardware and cut calibration testing work over 700-fold on a 100-qubit processor.
The question now is whether rapid spending on owned hardware, acquisitions, and staff builds a lasting software standard before the cash cushion runs low. One view is that owning testbeds and buying Entropica's error-correction tools creates a complete developer platform; the other is that heavy cash burn and share dilution are mounting with no customer revenue in sight. Fourth-quarter operating expenses and the final terms of the Entropica deal will show if cost growth is stabilizing.
🐂 Bull Case
New Testing Protocol Cuts Processor Calibration Work
Quantum computers are sensitive and require frequent calibration to fix unwanted interactions between qubits, the basic units of quantum information. Chief executive Dr. Joe Fitzsimons said the company tested its new parallel measurement method on a processor with over 100 qubits for the first time, "enabling more efficient, scalable QPU characterization". Checking qubit pairs one by one takes roughly 5,000 experiments on a 100-qubit machine, but Horizon Quantum cut that to 7.
What to watch: whether hardware makers adopt this calibration method inside their commercial systems over the next two quarters. Widespread use by chip builders would prove that the Singapore group's software solves a practical bottleneck as machines grow past 100 qubits.
Triple Alpha Software Now Controls OQC Hardware
Horizon Quantum builds Triple Alpha, a software toolset that lets developers write one quantum program and run it across different types of hardware. During the quarter, "we successfully completed the pulse-level integration of Triple Alpha with their 32 qubit Toshiko quantum processing unit" at partner Oxford Quantum Circuits (OQC), Fitzsimons said. The team used Triple Alpha to access the superconducting chip's control layer, measure how long qubits hold information, and calibrate logic gates.
This step adds a live superconducting integration to the developer platform alongside prior hardware agreements with Alice & Bob, Alpine Quantum Technologies, and Quantum Machines. The release did not update progress on the Beryllium coding language or the internal applications team. What to watch: user activity metrics on Triple Alpha and the Ember-1 testbed in the full-year report, because technical links must turn into active developer usage.
🐻 Bear Case
Operating Expenses Broke Above Management's Prior Baseline
Last quarter, management told investors that second-quarter operating expenses of $7.2 million represented a reasonable quarterly baseline for the near term. Instead, third-quarter operating costs jumped 46% from last quarter to $10.5 million, more than double the $4.9 million spent a year ago. The software developer attributed the wider loss to "increases in expenses associated with transitioning to a public company, increases in research and development headcount, and related operational support costs".
- General and administrative costs (overhead and public-company expenses): $5.2 million, up 127% from a year ago and up 82% excluding stock pay
- Research and development costs: $4.5 million, up 122% from a year ago and up 65% excluding stock pay
- Stock-based compensation across all departments: $3.8 million, up from $1.0 million in the second quarter
- EBITDA loss excluding one-offs and stock pay: $6.3 million, compared to $5.5 million last quarter and $3.0 million a year ago
Even after stripping out non-cash stock awards, cash operating costs are climbing much faster than the baseline management described three months ago. Because the business brings in no revenue, every dollar of extra overhead and payroll directly shortens the time its cash reserve will last. What to watch: fourth-quarter general and administrative spending excluding stock pay, which will show whether public-company overhead has peaked or keeps rising.
Capital-Light Software Model Faces Heavy Hardware Outlays
Horizon Quantum describes itself as a software infrastructure provider, but its cash is going into physical quantum computer hardware. In March, the group agreed to pay $35 million to IonQ, which also owns 7.8% of Horizon Quantum's shares, for a 256-qubit system in Dublin. By our math, subtracting six-month figures from the nine-month cash flow statement shows the company spent $5.5 million on equipment and construction in the third quarter, matching the $5.4 million spent in the second quarter.
Operating cash burn also sped up to $7.2 million in the quarter from $5.1 million in the second quarter, by our math, leaving free cash flow at negative $12.6 million. Warrant exercises brought in about $1.2 million of cash during the period, so the total cash balance fell by $10.5 million to $102.8 million. If the company still owes roughly $24 million on the IonQ machine, its uncommitted cash cushion is closer to $79 million.
What to watch: fourth-quarter capital expenditures and any update on the remaining IonQ payment schedule. Another $5 million quarterly equipment bill would confirm that hardware installments are draining cash just as fast as daily operations.
Planned Entropica Purchase Adds Share Dilution
Horizon Quantum signed a non-binding letter of intent to buy Entropica Labs, a fellow Singapore quantum software firm "who specialise in error correction and fault tolerance", Fitzsimons said. The company plans to pay $27 million using its own Class A ordinary shares rather than cash. Buying error-correction tools fills a technical need, and paying in stock preserves the cash balance for operations and hardware.
However, the deal adds to heavy shareholder dilution since the March public listing. Diluted weighted average shares already rose 56% from a year ago to 60.8 million in the third quarter following the merger and warrant exercises, with millions of employee options and warrants still outstanding. What to watch: the exact number of shares issued if the Entropica purchase reaches a final agreement, which will set the dilution cost for current owners.
Risks this quarter didn't answer
Four standing concerns around commercialization, competition, and hardware commitments received no new numbers in the third-quarter release.
- Commercial revenue timeline: third-quarter revenue was zero against zero a year ago, and management still gives no target date for first software sales.
- Developer adoption: the release omitted user counts for the Beryllium language and Triple Alpha, leaving no metric to test how Horizon Quantum stacks up against rival tools like IBM Qiskit.
- IonQ payment schedule: the timing of the remaining payments on the $35 million hardware contract was not disclosed.
- Dublin facility build-out: the release gave no update on selecting premises or starting lab construction for the 256-qubit system due in 2027.
👓 Other Themes
Warrant Accounting Swings Reported Profit
Horizon Quantum reported $33.4 million in third-quarter net income, or $0.61 per basic share, only because it booked a $43.1 million "non-cash gain from the remeasurement of warrant-related derivative liabilities". Under accounting rules, these warrants become a smaller liability on the balance sheet when the company's traded equity value drops, reducing warrant liabilities from $76.8 million in June to $32.4 million in September without adding any cash.
💲 Other KPIs
Cash fell by $10.5 million from $113.3 million at the end of the second quarter. It is the first quarterly cash decline since the March public listing and financing raised the balance from $0.2 million at the end of 2025. Without new financing or warrant proceeds, cash drops each quarter by the combined sum of operating losses and equipment purchases.
Prepaid and other current assets — up-front payments and contract commitments made before goods or services arrive — climbed 76% from $6.9 million in the second quarter and $0.7 million at the end of 2025. In the second quarter, $5.3 million of this line sat in contract commitment assets, pointing to ongoing staged deposits for quantum hardware and lab equipment.
Sales and marketing spending rose 16% from $0.37 million a year ago and 15% from $0.38 million in the second quarter. Excluding roughly $51,000 of stock pay, cash marketing costs remained minimal at under $0.4 million. The small budget reflects a business that is still building its software stack rather than pitching commercial contracts to customers.
❓ Key Questions
Why did operating expenses jump 46% above the Q2 baseline?
Management previously called the second quarter's $7.2 million operating expense level a reasonable near-term base. Even excluding stock pay, third-quarter expenses rose significantly, so investors need to know the new quarterly spending target.
What is the payment schedule for the remaining IonQ commitment?
Horizon Quantum has spent $11.0 million on capital equipment over the first nine months of 2026 while prepaid assets jumped to $12.1 million. Management has not disclosed how much of the $35 million IonQ bill remains unpaid or when those installments fall due.
How many shares will the $27 million Entropica acquisition require?
The non-binding letter of intent values Entropica Labs at $27 million in Class A ordinary shares. Because the release does not state the fixed share count or pricing formula, existing owners cannot calculate how much the deal will dilute their stake.
How many external developers use Triple Alpha and Beryllium?
The company continues to announce hardware integrations and testing protocols, but provides no user counts, active developer numbers, or testbed usage hours to measure whether outside programmers are adopting its tools.