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Horizon Quantum Begins Trading on Nasdaq

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Horizon Quantum began trading on the Nasdaq today, March 20, under the ticker “HQ”, as the quantum software infrastructure company celebrated with an Opening Bell ceremony. Founder and CEO, Dr. Joe Fitzsimons, led the event.

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✦ AI Summary · Claude Sonnet


    Horizon Quantum commenced trading on the Nasdaq Stock Market on March 20, under the ticker symbol “HQ,” marking a significant step for the quantum software infrastructure company as it enters the public market. The listing follows a period of development focused on building the foundational layers for future quantum applications, and the company’s founders celebrated the event by ringing the opening bell at Nasdaq MarketSite Studio in Times Square. Horizon Quantum Begins Nasdaq Trading Under Ticker “HQ” The company marked the occasion with a traditional bell-ringing ceremony at the Nasdaq MarketSite Studio in Times Square, with Dr. Joe Fitzsimons, Founder and CEO, and Dr. Si-Hui Tan, Chief Science Officer, participating. These ceremonies are a daily fixture at Nasdaq, providing public acknowledgement of a company’s entry into public markets and its potential for growth within the financial system. The Nasdaq listing follows a period of development for Horizon Quantum, which aims to provide the foundational software necessary to build and scale quantum computers, a technology still in its early stages but promising increases in computational power. Hondius Capital Management and Amplify Her Foundation also recently participated in bell-ringing ceremonies, highlighting ongoing activity at the exchange. Details of the Horizon Quantum event, including transcripts, are not currently available, but the company began trading on March 20. Dr. Fitzsimons and Dr. Tan Ring the Opening Bell Dr. Si-Hui Tan, Chief Science Officer, formally initiated trading by ringing the Opening Bell, a symbolic gesture acknowledging the company’s entry into the public market. This event follows a trend of specialized firms attracting public funding, though detailed transcripts of the ceremony are not currently available. Horizon Quantum’s focus is on building the foundational software necessary to harness the power of quantum processors, a complex undertaking requiring significant scientific expertise and engineering prowess. The Nasdaq Stock Market ceremonies, while traditional, serve as public acknowledgement of a company’s achievements and future prospects, signaling that the company began trading on March 20, and represents a key step in its growth trajectory, allowing it to access capital for further research and development, and potentially accelerate the timeline for commercial applications of quantum software. In honor of the occasion, Dr. Joe Fitzsimons, Founder and CEO, and Dr. Si-Hui Tan, Chief Science Officer ring the Opening Bell. Source: https://www.nasdaq.com/videos/horizon-quantum-rings-nasdaq-stock-market-opening-bell Tags: Horizon Quantum IPO NASDAQ quantum software Stock Market
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    Quantum Zeitgeist
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    ◌ Quantum Computing
    Published
    Mar 21, 2026
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    Mar 21, 2026
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