# Honeywell's Quantinuum Files for $20 Billion IPO, Poised to Become Largest Pure-Play Quantum Computing Stock

*2026-01-22 23:33 UTC · Technology · 1 min read*

> Quantinuum files SEC paperwork for IPO that could value the quantum computing company at over $20 billion

Honeywell announced on January 14 that Quantinuum, its majority-owned quantum computing subsidiary, has filed confidential paperwork with the SEC for a potential IPO. The offering could value the company at over $20 billion and raise approximately $1 billion, marking a major milestone for the emerging quantum computing industry.

Quantinuum was formed in 2021 through the merger of Honeywell Quantum Solutions and Cambridge Quantum. Honeywell holds a 54% stake, with IBM among other investors. In September 2025, the company raised $600 million at a $10 billion valuation from investors including NVIDIA's venture arm, JPMorgan Chase, and Mitsui.

The company develops trapped-ion quantum computers and employs over 630 people, including 370+ scientists and engineers across the US, UK, Germany, and Japan. In November 2025, Quantinuum launched Helios, a general-purpose quantum computer, and advanced to Stage B of DARPA's Quantum Benchmarking Initiative.

## Sources

- [thequantuminsider.com](https://thequantuminsider.com/2026/01/14/honeywell-announces-quantinuum-has-filed-confidential-paperwork-for-a-possible-ipo/)
- [bloomberg.com](https://www.bloomberg.com/news/articles/2026-01-14/honeywell-backed-quantinuum-is-close-to-filing-for-ipo)

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TechTools News · https://techtools.cz/tools/news/article/62-honeywell-s-quantinuum-files-for-20-billion-ipo-poised-to-become-largest-pure