Honeywell-backed Quantinuum (Nasdaq: QNT) began trading publicly on June 4, 2026. The company raised approximately $1.68 billion in the largest initial public offering for a quantum computing startup. The offering price was set at $60 per share. Shares opened at $68. This opening price represented a 13% increase over the initial offering. The company reached an initial valuation of over $17 billion. The stock closed its first trading day nearly flat.
Quantinuum posted a net loss of $136.5 million in the first quarter of 2026. This loss widened from the $30.5 million deficit reported in the same period last year. The company generated $30.9 million in revenue for the full year 2025. The net loss for the full year 2025 totaled $192.6 million.
The stock fell below its offering price in the week following the debut. Investors are weighing long-term disruptive potential against significant near-term losses. This performance tests market appetite for deep-tech companies that remain years from commercial viability.