These breakthroughs remind us that science is, as Astrid Söderbergh Widding, chair of the Nobel Foundation, stated in her ...

A gold superconducting quantum computer hangs against a black background. Quantum computers, like the one shown here, could someday allow chemists to solve problems that classical computers can’t.

IonQ holds the world record for quantum computing accuracy at 99.99% two-qubit gate fidelity, giving it a one-year lead over competitors Alphabet and Microsoft are investing heavily in quantum ...

Top quantum computing stocks 2026: IonQ leads accuracy at 99.99%, while Alphabet, Microsoft, Nvidia, and IBM compete with different quantum strategies.

In the world of quantum computing, some of the world’s most important tech giants are striving to achieve a permanent advantage over classical computing, solving problems that simply cannot be solved ...

Alphabet's Google Quantum AI is addressing nearly every aspect of superconducting quantum computing. Amazon's Ocelet chip holds the potential to dramatically reduce ...

For years, the conversation around quantum computing and cryptocurrency has been dominated by a single, breathless question: Will a quantum breakthrough kill Bitcoin? The fear is simple enough.

A team of Australian and international scientists has, for the first time, created a full picture of how errors unfold over time inside a quantum computer—a breakthrough that could help make future ...

Kara Greenberg is a senior news editor for Investopedia, where she does work writing, editing, and assigning daily markets and investing news. Prior to joining Investopedia, Kara was a researcher and ...

Quantum computing startups continue to raise enormous rounds of capital as Quantum Computing closed a $100 million series A financing round, boosting its total capital raised to $124 million. Quantum ...

Though they’ve recently had a bumpy ride, quantum computing stocks stacked cash overall in 2025, with industry exchange-traded fund Defiance Quantum ETF (ticker: QTUM) up 42% year to date as of Dec. 9 ...

High-flying, unprofitable pure-play quantum computing stocks will likely plunge if the bubble bursts. Tech giants that are investing in quantum computing but generate revenue from other businesses ...