Quantinuum raises $1.68B in upsized US IPO, valuing company at $15.6B

Summary

Quantinuum Inc., a quantum computing company backed by Honeywell International Inc., raised $1.68 billion in its upsized US initial public offering. The company sold 28 million shares for $60 each, above its marketed range of $53 to $55.

Why it matters

Significant funding for a quantum computing company

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Quantinuum raised $1.68B in an upsized US IPO, selling 28M shares for $60 each, above its marketed range of $53 to $55, valuing the company at $15.6B

6/4/2026, 6:30:38 AM

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