IonQ, D-Wave Quantum, Quantum Computing, Quantinuum, and Horizon Quantum Computing Pte. are the five Quantum Computing stocks to watch today, according to MarketBeat’s stock screener tool. Quantum computing stocks are shares of publicly traded companies that develop quantum computers, related hardware and software, or technologies that support the quantum-computing industry. These companies had the highest dollar trading volume of any Quantum Computing stocks within the last several days. D-Wave Quantum (QBTS)D-Wave Quantum Inc. develops and delivers quantum computing systems, software, and services worldwide.