Quantinuum boosts its IPO to $1.46 billion as orders hit double-digit multiples of available shares

TL;DR

Quantinuum boosted its IPO to $1.46 billion after double-digit oversubscription, raising the price range to $53-55 per share and targeting a $14.3 billion valuation. The Honeywell-backed quantum computing company reported $31 million in 2025 revenue and is set to begin trading Thursday.

Quantinuum, the Honeywell-backed quantum computing company, has increased the size of its initial public offering to as much as $1.46 billion after demand from investors far exceeded the original allocation. The company is now offering 26.5 million shares at $53 to $55 each, up from a previous range of approximately 21 million shares at $45 to $50. At the top of the new range, Quantinuum would enter the public market with a valuation of $14.3 billion.

The IPO drew orders for a double-digit multiple of the shares available, according to people familiar with the matter. Quantinuum is on track to price after the market closesin New...

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