# Honeywell-Backed Quantinuum Files for Landmark Quantum IPO at $12.7 Billion Valuation, Seeking to Raise Up to $1.05 Billion

*2026-05-28 10:01 UTC · Technology · 1 min read*

> Honeywell-backed Quantinuum filed for a U.S. IPO targeting a $12.7 billion valuation, seeking to raise up to $1.05 billion in a landmark quantum debut.

Quantinuum, the quantum computing firm backed by Honeywell, has filed for a U.S. initial public offering targeting a valuation of up to $12.7 billion. The Broomfield, Colorado company plans to raise as much as $1.05 billion by selling about 21.05 million shares priced at $45 to $50 each, in one of the most significant public debuts the quantum sector has seen.

The target marks a 27% jump from the $10 billion valuation Quantinuum reached in its September 2025 funding round. Formed in 2021 from a Honeywell spin-off merged with Cambridge Quantum, the company is chaired by Honeywell CEO Vimal Kapur and led by Intel veteran Rajeeb Hazra. Honeywell will retain about 49.1% of the voting power and stay on as a customer and partner after the listing.

The filing lands just days after the Trump administration announced it would take $2 billion in equity stakes across nine quantum-computing firms, including a $100 million grant for Quantinuum, as Washington races to secure U.S. leadership in the technology.

## Sources

- [techstartups.com](https://techstartups.com/2026/05/26/honeywell-backed-quantinuum-files-for-ipo-at-12-7b-valuation-as-quantum-race-heats-up/)
- [thequantuminsider.com](https://thequantuminsider.com/2026/05/26/honeywell-backed-quantinuum-files-for-landmark-quantum-ipo/)
- [advisorperspectives.com](https://www.advisorperspectives.com/articles/2026/05/26/honeywell-backed-quantinuum-raise-1-05-billion-ipo)

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TechTools News · https://techtools.cz/tools/news/article/1728-honeywell-backed-quantinuum-files-for-landmark-quantum-ipo-at-12-7-billion
Česká verze: https://techtools.cz/tools/news/clanek/1801-quantinuum-podporovany-honeywellem-podal-zadost-o-prulomove-kvantove-ipo-pri