Honeywell's quantum computing subsidiary Quantinuum has secured $600 million in funding at a $10 billion valuation, marking the highest valuation for a private quantum firm. The round was led by Quanta Computer, QED Investors, and NVIDIA's venture arm, with participation from existing investors including JPMorgan Chase and Honeywell. The funds will accelerate development of Quantinuum's next-generation Helios quantum platform, scheduled for 2025 launch, which aims to achieve fault-tolerant quantum computing. The company is expanding global partnerships and serves as a founding collaborator at NVIDIA's Quantum Research Center. Honeywell formed Quantinuum in 2021 by merging its quantum assets with Cambridge Quantum and plans to take the company public between 2026-2027.