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Exclusive-Honeywell's Quantinuum Raises $1.68 Billion in US IPO as Quantum Computing Heats up, Source Says

The company raised $1.68 billion after increasing its share count amid strong demand for quantum computing stocks.

  • On Wednesday, Honeywell International-backed Quantinuum raised $1.68 billion in its initial public offering, pricing 28 million shares at $60 each. The Colorado-based quantum company begins trading on the Nasdaq today under the ticker "QNT."
  • Formed in 2021 through the merger of Honeywell's quantum division and Cambridge Quantum, the firm retains strong backing from its founders. Honeywell and Cambridge Quantum Holdings will hold roughly 82% of the equity between them post-offering.
  • Valued at $15.6 billion, the Broomfield, Colorado-based Quantinuum saw investor demand drive the share count up to 28 million, surpassing initial expectations. This exceeded the originally planned 26.5 million shares.
  • Analysts at Wedbush said the listing "improves price discovery" and "draws sellside and institutional coverage" to the quantum sector. Quantinuum ranks as the second most valuable publicly traded quantum company behind IonQ.
  • The company recently secured a share of $2 billion in federal incentives under the CHIPS and Science Act to develop trapped-ion systems. Quantinuum continues serving clients including Airbus and JPMorgan Chase as it scales commercial operations.
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Seeking Alpha broke the news in United States on Wednesday, June 3, 2026.
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