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Honeywell’s quantum company goes public. What investors should know about the IPO

It’s a win for Honeywell as the offering gives a valuation to a business that investors previously had to guess what it was worth.

Honeywell-backed Quantinuum saw shares jump as much as 19% to over $71 each in their Thursday debut. The quantum company’s stock closed well off those highs, up less than 1%, bringing the market cap to $15.66 billion. Roughly 28 million Quantinuum sh… [5701 chars]

Source: CNBC | Published: 2026-06-04T20:52:23Z

Credit: CNBC

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