Honeywell Starts Quantinuum Trading, Sets June 29 Split Into 2 Companies

3 articles · Updated · Barchart · Jun 4

June 4 marked Quantinuum’s market debut, giving Honeywell shareholders direct exposure to a quantum business that Honeywell still largely controls ahead of the breakup.
June 29 is the effective date for Honeywell’s separation into Honeywell Technologies and Honeywell Aerospace, with the technology side expected to retain most or all of Honeywell’s quantum stake.
49.1% is Honeywell’s stake in Quantinuum, which posted $30.9 million in 2025 revenue and counts BMW, JPMorgan, Amgen and Airbus among customers or partners.
Up to $100 million in potential U.S. support for early quantum firms could bolster Quantinuum’s federal-contract prospects as Honeywell monetizes non-core assets.
The split may not benefit both pieces equally: automation is tied to fast-growing robotics demand, while aerospace faces pressure from high jet-fuel costs and airline spending risks linked to Iran tensions.

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Barchart9d ago

Honeywell's Quantinuum (QNT) Begins Trading; Aerospace and Automation Units to Separate June 29

Bloomberg8d ago

Quantinuum Inc. Raises $1.68 Billion in Upsized US IPO; Shares Open at $68

Bloomberg9d ago

Quantinuum Raises $1.68 Billion in Upsized US IPO, Valued at $15.6 Billion

16 Sources

As quantum IPOs soar, how close are these machines to actually solving real-world problems and generating real profit?

With the government now a direct investor, is the quantum computing boom a true tech revolution or the next speculative bubble?

Quantinuum’s Landmark $1.68 Billion IPO Signals Quantum Computing’s Coming of Age

Overview

Quantinuum made a major impact in the U.S. IPO market in June 2026, standing out during a busy period for new listings. The company attracted strong institutional demand and robust investor interest, reflecting both the growing excitement around quantum computing and the limited opportunities to invest in this advanced field. This enthusiasm led Quantinuum to upsize its offering, quickly increasing the number of shares and raising its valuation. The successful IPO highlights how investor confidence and market conditions combined to create a landmark moment for both Quantinuum and the broader quantum computing industry.

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