# Quantinuum Honeywell-controlled trapped-ion quantum company formed from the 2021 Honeywell Quantum Solutions–Cambridge Quantum merger. Its Helios system (98 physical / 48 logical qubits, 99.921% two-qubit gate fidelity) posts arguably the best hardware numbers in the industry. IPO'd on Nasdaq (QNT) in June 2026, raising ~$1.68B — the largest quantum IPO ever — after a $600M raise at ~$10B in September 2025, and took $100M in the May 2026 federal equity package. > Status: stub — expand with the Honeywell relationship, the QCCD architecture, and the IPO as a sector-legitimacy marker. ## See Also - [[Quantum Computing Sector]] - [[Quantum Error Correction]]