Four Quantum Computing Firms Go Public in 2026

Four quantum computing firms—Quantinuum Inc., Xanadu Quantum Technologies, Horizon Quantum Computing, and Infleqtion Inc.—entered the public market between February and June 2026. Quantinuum Inc. pursued a traditional initial public offering, while the other three companies transitioned to public status through mergers with special purpose acquisition companies.

These companies are pursuing distinct technical strategies to advance the field. Quantinuum Inc. is developing trapped-ion hardware via its Helios system, while Infleqtion Inc. focuses on neutral-atom computing for sensing technology. Xanadu specializes in photonic quantum computers, and Horizon Quantum Computing provides a software layer compatible with various hardware types.

To establish market viability, the companies have secured high-profile partnerships. Quantinuum Inc. is collaborating with Hewlett Packard Enterprise, Infleqtion Inc. is participating in a NASA Jet Propulsion Lab mission, and Xanadu has entered a workforce training agreement with Lockheed Martin. Despite these strategic alliances, the group faces ongoing financial headwinds characterized by operating losses and irregular revenue streams.