Quantinuum Inc

QNT

Market cap $1.77B

Seven days after completing the largest pure-play quantum computing IPO on record, Honeywell HON-backed Quantinuum's QNT stock has lost roughly 15% of its value, falling from its $60 IPO price to around $51. The decline suggests that the market is moving beyond IPO enthusiasm and beginning to assess whether the company's long-term growth prospects justify its valuation.

IQM, a Finnish quantum start-up, has raised $146 million ahead of its trading debut next quarter.

Quantinuum generated just $30.9 million of revenue in 2025 despite commanding a market capitalization of approximately $14.6 billion. Helios achieved 99.921% two-qubit gate fidelity and 48 logical qubits, highlighting leadership in fault-tolerant quantum computing. The company plans to launch Sol in 2027 and Apollo in 2029, targeting commercially viable quantum applications.

The U.S. IPO market maintained its strong momentum in May with 12 offerings raising $13.1 billion in total proceeds, which was well above April's $8.2 billion in total proceeds but one short on deal count. The largest deal of the month was technology firm Cerebras Systems' $6.4 billion raise, making it the largest IPO since Medline Inc.'s $7.2 billion raise in December 2025 and the biggest tech IPO since Uber Technologies' $8.1 billion in May 2019. The healthcare sector saw three new issuers, led by GMR Solutions' $478.7 million offering.