Quantinuum, the quantum computing subsidiary spun out of Honeywell, has filed for a traditional IPO on the Nasdaq under the ticker “QNT.” The company aims to raise approximately $1 billion at a valuation exceeding $20 billion, though specific share counts and pricing remain undisclosed.

Unlike many quantum startups that have pursued SPAC mergers, Quantinuum is opting for a conventional public offering, which entails stricter regulatory scrutiny and more detailed financial disclosures. Honeywell’s deep corporate backing provides Quantinuum with a rare advantage: a parent company generating substantial revenue from non-quantum businesses.

Just three days before the S-1 filing, Quantinuum expanded its multi-year partnership with BMW Group to explore quantum applications in materials science for mobility. On the hardware front, Quantinuum’s roadmap includes the current Helios system, with future generations Sol (2027) and Apollo (2029) in development.

For investors, key factors will be the final IPO pricing and the extent of Honeywell’s retained stake post-offering.