Quantinuum Hits $10B Valuation with $600M Raise as Nvidia Joins Funding Round

Honeywell International's quantum computing venture Quantinuum has secured $600 million in fresh funding, propelling its valuation to $10 billion pre-money. The round marks one of the largest capital injections in quantum computing, positioning Quantinuum among the sector's best-capitalized players.

Nvidia's venture arm NVentures emerged as a notable new investor, signaling the chipmaker's strategic pivot toward quantum technologies. CEO Jensen Huang had previously tempered expectations for near-term quantum breakthroughs but now appears to be positioning Nvidia at the convergence of classical and quantum computing architectures.

The funding consortium blends continuity and new momentum. Existing backers including JPMorgan Chase and Mitsui deepened their commitments, while Quanta Computer and QED Investors joined the cap table. Honeywell maintains majority control with 53% ownership, followed by Cambridge Quantum's 36% stake.