Quantinuum secures $600m at a $10bn valuation to develop next-generation quantum computers.
The financing round attracted new investors including NVentures and Quanta Computer.
≈ £444M at $1 = £0.7402 on 5 Sep 2025
Cambridge-based quantum computing company developing hardware and software systems for commercial applications.
Quantinuum has secured $600m in fresh equity at a $10bn pre-money valuation, building on previous funding rounds from early 2024. The latest financing was backed by new participants including NVentures and Quanta Computer alongside established investors such as J.P. Morgan Chase and Honeywell.
The capital injection will support the company as it prepares to launch its next-generation quantum system, Helios, and expands its global research collaborations. Honeywell remains the majority shareholder following the firm's formation through a spin-out and merger in 2021.
The transaction highlights growing commercial confidence in hybrid quantum-classical computing. Leadership notes that the new resources will accelerate development across international markets and strengthen the broader quantum ecosystem.
From the founder
"We are proud to partner with investors who share deep conviction in our vision for the future of quantum and AI"
Rajeeb Hazra
CEO at Quantinuum
Investor perspective
"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."
Vimal Kapur
Chairman and CEO, Honeywell
Investors
About the company
Quantinuum
Building advanced quantum computing systems and software infrastructure.