Meet the Cornerstone Quantum Computing Stock Billionaires Have Piled Into for 2026 (Hint: It's Not IonQ, Rigetti Computing, or D-Wave Quantum) - Yahoo Finance

Meet the Cornerstone Quantum Computing Stock Billionaires Have Piled Into for 2026 (Hint: It's Not IonQ, Rigetti Computing, or D-Wave Quantum) Sean Williams, The Motley Fool January 2, 2026 7 min read IONQ +4.84% RGTI -0.86% QBTS -0.14% QUBT +2.72% Key Points Quarterly Form 13F filings allow investors to track which stocks Wall Street's billionaire investors have been buying and selling. Headwinds appear to be mounting for quantum computing pure-play stocks IonQ, Rigetti Computing, D-Wave Quantum, and Quantum Computing Inc. Meanwhile, several billionaires have made one of Wall Street's most influential companies a core holding in their portfolios. 10 stocks we like better than Alphabet › Although artificial intelligence (AI) has been a leading technological trend on Wall Street over the last three years, it took a back seat in 2025 to an even hotter tech innovation: the rise of quantum computing. During select points in 2025, pure-play quantum computing stocks IonQ (NYSE: IONQ), Rigetti Computing (NASDAQ: RGTI), D-Wave Quantum (NYSE: QBTS), and Quantum Computing Inc. (NASDAQ: QUBT) had rallied by up to 5,400% on a trailing 12-month basis. Investors with the foresight to see the potential in quantum computing generated life-altering turns. However, Wall Street's savviest money managers offer a different perspective. Image source: Getty Images. Thanks to required quarterly Form 13F filings with the Securities and Exchange Commission, investors have the ability to track the stocks billionaire fund managers have been buying and selling. You might be surprised to learn that billionaire investors haven't been buying shares of IonQ, Rigetti Computing, D-Wave Quantum, and Quantum Computing Inc. -- and with good reason. Instead, they've chosen to load up on shares of a company that can be foundational in the quantum computing space. Quantum computing pure-play stocks are likely to face significant headwinds On paper, specialized quantum computers can be a global game changer. There's potential to dramatically speed up the learning curve for AI algorithms, beef up the protection of AI-driven cybersecurity platforms, and vastly improve the drug development process through molecular interaction simulations. But reaching the point where quantum computers are a more practical and cost-effective solution than classical computers will take time. Every major technological advancement over the last three decades has required time to mature and evolve. Companies like IonQ, Rigetti, D-Wave, and Quantum Computing Inc. are still in the very early stages of commercializing their quantum computers and services. Even if the adoption rate of quantum computing solutions exceeds the initial expectations of Wall Street analysts and investors, it's doubtful that businesses will be anywhere close to optimizing this technology to maximize their sales, profits, and return on investment anytime soon. In other words, all the historical hallmarks for a quantum computing bubble taking shape and subsequently bursting are firmly in place. Story Continues View Comments Terms and Privacy Policy Privacy Dashboard