Quantinuum Inc., a quantum computing company backed by Honeywell International, prices and launches a $1.68 billion upsized initial public offering in the United States. The IPO sells 28 million shares at $60 each, and the company pursues a traditional IPO structure rather than the SPAC route used by some other quantum-focused firms. Following pricing, Quantinuum’s stock begins trading above its listing price. Bloomberg reports the shares open about 13% higher, while CNBC says the stock opens at $68 per share. The Next Web also notes that the final IPO price of $60 is above the marketed range of $53 to $55, pointing to strong investor demand. Honeywell retains a majority stake in Quantinuum after the IPO and continues as a strategic customer and partner. Multiple outlets describe the move as reflecting growing market interest in quantum computing as the sector draws more investor attention. MarketWatch adds that trading expectations include an opening valuation that could exceed $18 billion, based on indications for the share price at or near the opening.