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.
Key Facts
| Industry | Quantum Computing |
| Founded | 2021 |
| Headquarters | Broomfield, CO |
| Employees | ~500 |
| Website | quantinuum.com |
| Funding | Raised $300M Series A at $5B valuation in 2022 |
About Quantinuum
Quantinuum was formed through the merger of Honeywell Quantum Solutions and Cambridge Quantum Computing, creating one of the world's largest standalone quantum computing companies. The company focuses on developing trapped-ion quantum computers and quantum software, offering both quantum hardware systems and cloud-based quantum computing services through their H-Series quantum computers.
The company's quantum systems are known for achieving high quantum volume and fidelity, with their H1 and H2 systems representing some of the most advanced commercial quantum computers available. Quantinuum serves enterprise customers across industries including finance, pharmaceuticals, materials science, and cybersecurity, providing both quantum computing access and specialized quantum algorithms for real-world applications.
IPO Status
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.
Competitors
Frequently Asked Questions
Does Quantinuum have a stock?
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.
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.
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