Honeywell Raises $600 Million for Quantinuum, Priced at $10 Billion

Dr. Rajeeb Hazra from Quantinuum announced a $600 million equity capital raise at a pre‑money valuation of $10 billion, positioning the company to accelerate the launch of its Helios quantum computer and pursue universal fault‑tolerant computing. The funding round, led by Honeywell and joined by JPMorgan Chase, Mitsui, Amgen, Cambridge Quantum Holdings, Serendipity Capital, NVentures, QED Investors, MESH, and Korea Investment Partners, will underpin Quantinuum’s expansion of manufacturing capacity, supply-chain resilience, and the development of AI-enhanced quantum applications. With a workforce of 630 employees, including more than 370 scientists and engineers across the United States, the United Kingdom, Germany and Japan, Quantinuum is already recognised as the world’s highest‑performing quantum‑computing provider.

On 4 September 2025, Honeywell announced it would lead a $600 million equity raise for Quantinuum, valuing the company at a pre‑money equity of $10 billion. The capital is earmarked to accelerate the launch of Quantinuum’s next‑generation Helios quantum system, slated for release later in 2025, and to underpin the company’s pursuit of the first practical, universal fault‑tolerant quantum computer.

The round attracted a diverse consortium of investors. Existing shareholders such as JPMorgan Chase, Mitsui, Amgen, Cambridge Quantum Holdings and Serendipity Capital, together with Honeywell, were joined by new participants MESH, Korea Investment Partners, Quanta Computer, NVentures (NVIDIA’s venture arm) and QED Investors. The mix spans semiconductor manufacturing, financial services, biotechnology and venture capital, reflecting broad confidence in Quantinuum’s commercial trajectory.

Proceeds will expand Quantinuum’s manufacturing footprint, secure critical supply chains and accelerate the development of Helios. The company will scale its quantum hardware production and integrate advanced error-correction protocols, which are essential for fault tolerance, thereby moving closer to delivering universal fault-tolerant computing.

Quantinuum has forged alliances that extend its reach across key geographies. In New Mexico, a regional research and development hub will open in early 2026 to test next-generation error-correction protocols. A joint venture in Qatar, part of the country’s $1 billion investment in emerging technologies, will host a dedicated quantum-processing centre with Helios, expected to become operational by the end of 2026. In Singapore, the company is collaborating on computational biology, providing Helios access to local biotech firms, running workshops and training programmes, and launching a protein-folding pilot in Q3 2025. Additional partnerships with RIKEN in Japan, SoftBank Corp. in Japan, Infineon in Germany, and the STFC Hartree Centre in the United Kingdom aim to accelerate manufacturing, secure supply chains, and develop industry-specific quantum use cases.

Quantinuum’s collaboration with NVIDIA at the Accelerated Quantum Research Centre fuses classical artificial intelligence with quantum processing, while its proprietary InQuanto developer tools streamline application creation on its processors. These alliances, together with the expanded manufacturing and supply‑chain capabilities, position Quantinuum to deliver fault‑tolerant quantum computing that could lower the energy footprint of large‑scale machine‑learning workloads, enable greener pharmaceuticals, improve energy‑storage solutions and enhance climate‑modeling tools, thereby aligning quantum technology with global sustainability objectives.