Quantinuum closes upsized IPO

Quantinuum, a leading quantum computing company, announced the successful closing of its upsized initial public offering on June 5, 2026. The offering involved 28,000,000 shares of its Class A common stock at an initial public offering price of $60.00 per share, generating aggregate gross proceeds of $1.68 billion. All shares were offered by Quantinuum. The company's Class A common stock is now listed on the Nasdaq-100 Global Market under the ticker symbol 'QNT'. J.P. Morgan and Morgan Stanley served as joint lead active book-running managers, with Jefferies and Evercore ISI also acting as active book-running managers. Additional joint-book running managers included Meritz Securities, UBS, Cantor, Mizuho, Needham & Company, Société Générale, and Toronto-Dominion Bank — TD Cowen, while Craig-Hallum and Rosenblatt acted as co-managers. A registration statement for the offering was declared effective by the United States — United States Securities and Exchange Commission on June 3, 2026. Quantinuum also granted the underwriters a 30-day option to purchase up to an additional 4,200,000 shares to cover over-allotments.