Quantinuum Inc., the quantum computing company backed by Honeywell International Inc., has upsized its initial public offering according to a new SEC filing. The firm now plans to sell 26.5 million shares priced between $53 and $55 each. This would raise up to $1.46 billion at a valuation reaching $14.3 billion.

The move signals strong investor appetite for quantum computing, a field still in its early commercial stages. Quantinuum's technology focuses on building advanced quantum processors for applications in cryptography, drug discovery, and logistics. A successful IPO would provide substantial capital to scale operations amid intensifying competition from players like IonQ and Google.

Based on the filing, the share price range of $53 to $55 gives Quantinuum a potential valuation of up to $14.3 billion. The company is selling 26.5 million shares, up from an earlier target. These figures come directly from the SEC document reviewed by Bloomberg.

The offering's success could set a benchmark for other quantum startups eyeing public markets. Investors will watch for the final pricing and first-day trading performance. A strong debut would validate the sector's growth narrative, while a weak one could cool enthusiasm.

Some analysts caution that quantum computing remains unprofitable and faces technical hurdles. Skeptics argue the lofty valuation may not match near-term revenue prospects, echoing concerns seen with earlier tech IPOs.