Honeywell's Quantinuum settles on $12.7bn IPO target after $20bn whisper

Quantinuum, majority-owned by Honeywell, is targeting a $12.7bn valuation in its US IPO, below earlier $20bn-plus expectations. The valuation is about 27% above Honeywell’s $10bn pre-money valuation from a $600m equity raise in September and about 36% below earlier IPO whispers. Revenue is $31m in 2025, while operating losses implied in the S-1 are much larger. The IPO would be the largest quantum-computing listing to date and the first private quantum company to move from frontier hardware development to a public-market valuation above $10bn. The premium is tied to trapped-ion qubits, which are viewed as having a longer error-correction runway than superconducting approaches. Honeywell’s majority stake makes the IPO a portfolio-management step, creating a tradable security and clearer quantum exposure for shareholders.

"Quantinuum, the quantum-computing company majority-owned by Honeywell, is targeting a valuation of $12.7bn in its US IPO, according to a Reuters report on Tuesday, a level materially below the $20bn-plus figure that circulated earlier in May when the company filed its S-1. The new figure puts the IPO at roughly 27% above the $10bn pre-money valuation set in Honeywell's $600m equity raise last September. It is also about 36% below the earlier IPO whisper, suggesting either that bankers have taken a more conservative read of public-market appetite for pre-revenue quantum names or that the company itself has chosen to price for a confident debut rather than a stretch one."

"Quantinuum reported $31m in revenue in 2025, against operating losses that the S-1 implied are larger by an order of magnitude. The IPO would be the largest quantum-computing listing to date and the first in which a private quantum company moves directly from frontier hardware development to a public-market valuation north of $10bn. Comparable public peers, including IonQ, Rigetti and D-Wave, trade well below that mark on revenues of similar or smaller scale. Quantinuum's premium rests on its hardware approach, trapped-ion qubits, which is generally considered to have a longer error-correction runway than the superconducting approach used by most quantum-adjacent listed firms."

"Honeywell's majority position means the IPO doubles as a portfolio-management exercise. The industrial conglomerate has spent the past two years preparing investors for the eventual separation of its quantum business; the listing creates a tradable security for the position and gives Honeywell shareholders explicit quantum exposure rather than an embedded one. The company has not signalled how much of its stake it intends to retain after the offering."

Read at TNW | Quantum-Tech