UK-based Quantinuum has secured $600 million in fresh funding, valuing the company at $10 billion. Honeywell remains its majority owner, with new investors Nvidia’s NVentures, Quanta Computer, and QED joining existing backers like JPMorgan and Amgen.

The raise will fund the rollout of Helios, a next-gen quantum platform debuting this year, and bolster efforts to achieve fault-tolerant quantum computing. Quantinuum markets itself as a full-stack provider combining hardware, software, and research.

Partnerships include collaboration with Nvidia on AI-quantum integration, plus alliances with Riken, SoftBank, and Infineon. International expansion continues across New Mexico, Singapore, and Qatar, where it participates in a $1B national quantum program.

Founded as Cambridge Quantum in 2014, Quantinuum employs 630 staff, nearly 60% of them scientists and engineers. The raise reflects surging investor interest in quantum after IQM’s $320M financing.