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Horizon Quantum Finalizes Merger With dMY Squared, Begins Nasdaq Trading

lite News Desk 2 min read

At a glance

  • Horizon Quantum completed its merger with dMY Squared on March 19, 2026.
  • Shareholders received $508.4 million in Holdco shares at closing.
  • Horizon Quantum shares and warrants started trading on Nasdaq March 20, 2026.

Horizon Quantum completed its business combination with dMY Squared Technology Group, Inc. on March 19, 2026, marking a key step in the company’s development as a public entity.

The transaction followed approval from dMY Squared’s shareholders at a special meeting held two days earlier. The merger resulted in Horizon Quantum becoming a publicly traded company with new shares issued to existing shareholders.

After the closing of the merger, Horizon Quantum’s Class A ordinary shares and warrants began trading on the Nasdaq exchange under the ticker symbols “HQ” and “HQWWW” starting March 20, 2026. The company reported that the consideration to Horizon shareholders totaled $508,384,000, paid entirely in newly issued Holdco Class A and Class B ordinary shares.

The closing of the business combination provided Horizon Quantum with approximately $120 million in gross proceeds before transaction expenses. This influx of capital is reflected in the company’s financial disclosures related to the merger.

What the numbers show

  • The merger closed on March 19, 2026.
  • Shareholders received $508,384,000 in Holdco shares.
  • Horizon Quantum reported $120 million in gross proceeds from the transaction.

Horizon Quantum announced a slate of expected new board members and a chief legal officer following the merger. The company stated that Danielle Lambert, Peter Oey, Jill Turner, and Harry You are set to join the board, with Catherine Fitzsimons expected to assume the role of Chief Legal Officer in May.

The business combination was structured so that all merger consideration was distributed in the form of newly issued shares, with no cash component for shareholders. This approach was outlined in the company’s filings and press releases.

According to official filings, the approval process for the merger included a special meeting of dMY Squared shareholders, which took place on March 17, 2026. The completion of the transaction was subsequently confirmed in regulatory documents filed with the SEC.

Following the merger, Horizon Quantum’s securities began trading on the Nasdaq, providing shareholders with access to public markets. The company has outlined its post-merger leadership and governance plans through official announcements.

* This article is based on publicly available information at the time of writing.

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