
Honeywell-Backed Quantinuum Debuts in Upsized IPO, Closes Near Debut Price
Quantinuum Inc., the Honeywell-backed quantum-computing company formed from Honeywell Quantum Solutions and Cambridge Quantum, priced its upsized US IPO at $60 a share, opened at $68, and closed at $60.38 for a roughly $16 billion market value. Demand ran more than 20 times the shares offered. Honeywell will hold about 49% of voting power and Cambridge Quantum about 33% after the listing, with JPMorgan Chase and Morgan Stanley leading the offering. Quantinuum’s platform targets chemistry, machine learning, cybersecurity, finance and drug discovery, as investor enthusiasm for AI and quantum tech supports the stock rally. The broader government funding package includes roughly $100 million for Quantinuum (IBM received $1 billion), with the government taking minority stakes in the firms.













