Quantinuum priced its initial public offering at $60 per share on June 3, 2026, exceeding its earlier range of $53 to $55, and raised $1.68 billion by selling about 28 million Class A shares [1, 2, 3, 4, 5, 6]. The quantum computing company’s shares opened on Nasdaq at $68 per share on June 4 and climbed to an intraday high near $71.35 before closing just above $60 [2, 3, 7, 5].

At the first trade, Quantinuum’s market capitalization was estimated between $15.66 billion and $17.6 billion, based on various calculations of shares outstanding and opening prices [2, 3, 7, 5, 6]. The company’s ticker symbol on Nasdaq is QNT [2, 3, 4, 8, 5, 6].

Quantinuum was created in 2021 by merging Honeywell’s quantum computing division with Cambridge Quantum [2, 3, 7, 6]. Honeywell remains the majority shareholder, holding about 48% voting power and continuing as a strategic partner and customer. CEO Rajeeb Hazra said Honeywell would “continue to be a very disciplined shareholder” and assist with supply chain, manufacturing, and customer access [2, 3, 6].

The company offers a full-stack quantum computing platform including hardware and software. Its clients span industries like pharmaceuticals, finance, materials science, government, and industrial sectors [2, 6]. Hazra noted, "We have customers today that are using our commercially available hardware and software, our full stack, to get started with their quantum journey" [2].

Quantinuum reported $30.9 million in revenue in 2025, a 34% increase over 2024, but it posted large net losses due to heavy research and development investments [7, 9, 5, 6]. In the first quarter of 2026, revenue fell 73% year over year to $5.24 million, while net losses widened to $136.5 million [2, 6].

The U.S. Department of Commerce has committed $100 million in funding to Quantinuum through the Chips and Science Act’s $2 billion investment in quantum ecosystem companies, a signal of strong government support [2, 6]. Hazra said, "It's a great validation of quantum, of Quantinuum, as a strategic asset for the U.S. quantum industry" [2].

Quantinuum’s IPO was more than 20 times oversubscribed by investors, reflecting strong market demand [10]. The shares will continue trading under the symbol QNT on Nasdaq.

The company will continue operations with Honeywell as a majority owner and will focus on advancing its trapped-ion quantum computing technology and expanding commercial deployments.