Image: QUATINUUM
Honeywell (NASDAQ: HON) has announced an equity capital raise of approximately $600 million for its quantum subsidiary Quantinuum, valuing the company at $10 billion pre-money. The round underlines Honeywell’s role as a central force in quantum computing’s commercial trajectory.
Global Investor Backing
The financing drew participation from an extensive set of investors. New backers include Quanta Computer, NVentures(NVIDIA’s venture arm), QED Investors, MESH, and Korea Investment Partners. They join returning shareholders JPMorganChase, Mitsui, Amgen, Cambridge Quantum Holdings, Serendipity Capital, and Honeywell itself.
The investment is meant to help Quantinuum advance toward the goal of universal fault-tolerant quantum computing and assist the development of Helios, its next-generation quantum computing system, which is anticipated later this year.
Honeywell, which merged its quantum division with Cambridge Quantum to form Quantinuum in 2021, has kept a majority stake and continues to position itself as a long-term backer.
“Quantinuum continues to meet and exceed our stated objectives – strategically, technically and commercially. We have complete confidence in Quantinuum’s ability to continue to lead the quantum revolution and create long-term value for its investors and customers,” said Vimal Kapur, Chairman and CEO of Honeywell.
In recent months, Quantinuum has rapidly grown, forming strategic alliances with RIKEN, SoftBank, Infineon, and the UK’s STFC Hartree Center. The business is also expanding internationally:
- In Qatar, a joint venture was chosen to deliver advanced infrastructure as part of the country’s $1 billion quantum program.
- In Singapore, collaborations are underway focusing on computational biology.
- In the United States, the company is extending operations in New Mexico.
Quantinuum also announced it will collaborate with NVIDIA as a founding partner at the NVIDIA Accelerated Quantum Research Center, linking quantum development with classical AI acceleration.
The raise represents one of the largest private financings in the history of the quantum computing sector. Honeywell is indicating that fault-tolerant quantum computing, which has long been a theoretical objective, is now an investable horizon by securing Quantinuum’s growth.
Source: Honeywell official press release
Disclaimer: This article is an editorial coverage prepared for Quantum Universum. All facts, statements, and direct quotations are taken from the official press release issued by Honeywell on September 4, 2025. Quantum Universum provides this coverage for informational purposes only and does not independently verify technical claims.








