Quantinuum (NASDAQ: QNT) priced its initial public offering at $60 per share on June 3, 2026, raising $1.68 billion through the sale of 28 million Class A shares on the Nasdaq Global Select Market.
Shares opened at $68 when trading began, a 13% premium over the IPO price, before closing little changed and bringing the company’s market value to $15.7 billion.
The deal drew extraordinary investor appetite, with the offering more than 20 times oversubscribed, and allocations favoring long-only institutional investors who had engaged directly with Quantinuum management.
Quantinuum originally filed to sell roughly 21 million shares at $45 to $50 each, targeting a valuation near $12.7 billion before demand forced repeated upward revisions.
The company subsequently raised both the share count and the price range to 26.5 million shares at $53 to $55, before underwriters priced the deal at $60 and expanded the offering to 28 million shares.
J.P. Morgan and Morgan Stanley served as joint lead book-running managers, with Jefferies, Evercore ISI, BofA Securities, and UBS among the additional banks participating in the deal.
Founded in 2021 through a merger of Honeywell’s quantum computing division and UK-based Cambridge Quantum, Quantinuum describes itself as a full-stack quantum computing platform spanning both hardware and software.
Honeywell will retain approximately 48.1% of the combined voting power in Quantinuum upon completion of the offering, according to a regulatory filing.
Quantinuum’s customer base spans the pharmaceutical, materials science, finance, government, and industrial markets, with clients including JPMorgan Chase and Amgen listed in its S-1 filing.
Japan’s Riken research institute accounted for approximately 60% of the company’s 2025 revenue, underscoring the sector’s continued dependence on government and research-driven spending.
Quantinuum generated $30.9 million in 2025 revenue while posting a net loss of $192.6 million, meaning current earnings do not support the IPO valuation at its current scale.
Revenue decreased 73% to $5.24 million in the first quarter from $19.1 million a year earlier, while the company recorded a net loss of $136.5 million compared to a $30.5 million loss in the same period one year ago.
Investor sentiment received a boost after the U.S. government announced a $2 billion initiative to take equity stakes in nine quantum computing companies, including a planned $100 million investment in Quantinuum.
Also on Thursday, Quantinuum announced a non-binding memorandum of understanding with Mitsubishi Electric to explore quantum computing applications for industrial engineering and design, with initial focus areas expected to include computational fluid dynamics and other simulation workflows.
Quantinuum’s listing represents the most significant public market event in the quantum computing sector since IonQ went public via a SPAC merger in 2021.
