For three years, artificial intelligence (AI) has been captivating the attention and wallets of professional and retail investors. But in 2025, this game-changing technology was outdone by an even more hyped innovation: quantum computing.

Over the trailing year, quantum computing pure-play stocks IonQ ( IONQ +0.15% ) , Rigetti Computing ( RGTI 0.14% ) , D-Wave Quantum ( QBTS 0.39% ) , and Quantum Computing Inc. ( QUBT +1.54% ) have respectively rallied 47%, 784%, 616%, and 77%. Early investors have enjoyed life-altering gains in some of these quantum computing stocks.

But a new year often means new challenges for Wall Street's hottest trends. While quantum computers offer intriguing real-world utility, IonQ, Rigetti, D-Wave, and Quantum Computing Inc. ha

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