Quantinuum IPO
Quantinuum is a quantum computing company formed from the merger of Honeywell Quantum Solutions and Cambridge Quantum Computing. The company builds trapped-ion quantum computers and quantum software for applications in chemistry, optimization, and cybersecurity. Quantinuum is valued at around $5 billion and is one of the most advanced quantum computing companies.
What We Know
Quantinuum confidentially filed its S-1 on January 14, 2026, targeting an H1 2026 IPO at a $20 billion+ valuation. The company received a $600 million investment at a $10 billion pre-money valuation in September 2025. Honeywell, which owns ~54% of Quantinuum, plans to exit its stake within 12-36 months.
Frequently Asked Questions
Has Quantinuum had an IPO?
Quantinuum confidentially filed its S-1 in January 2026, targeting an H1 2026 IPO at a $20 billion+ valuation. Morgan Stanley and JPMorgan are underwriting. Sign up for alerts to get notified.
When is the Quantinuum IPO date?
Quantinuum is targeting an H1 2026 IPO after filing its S-1 in January 2026. The quantum computing company expects to raise approximately $1 billion.
How can I buy Quantinuum stock?
Quantinuum is not yet publicly traded. Once the company completes its IPO, you'll be able to buy shares through any major brokerage. Sign up for alerts to be notified.
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