Quantum computing stocks like Rigetti surged on hype but are now plunging. We examine whether the quantum boom is over and if ...

IonQ just sold a 100-qubit quantum system to South Korea. Here's why that's not enough to make me buy the stock.

On December 16, Jefferies initiated coverage of Rigetti Computing with a Hold rating and $30 price target. The company is ...

Quantum computing could take several steps forward in 2026.

Quantum computing represents a relatively nascent industry. Quantum computing is a promising field with massive long-term ...

Physicists at Silicon Quantum Computing have developed what they say is the most accurate quantum computing chip ever ...

The problem is, Rigetti doesn't expect to book those revenues until H1 2026, and the company hasn't announced any other sales ...

Quantum computing was one of the biggest investment stories of 2025. Most investors chased specialized quantum computing stocks like IonQ (IONQ), which saw massive price swings throughout the year.

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The MarketWatch News Department was not involved in the creation of this content. The partnership with Nobel laureate John Martinis showcases a new generation of robust, scalable superconducting ...

A group of South Korean researchers has successfully developed an integrated quantum circuit chip using photons (light particles). It is a system capable of controlling eight photons using a photonic ...

“We continue to achieve our ambitious roadmap goals, most recently by demonstrating the industry’s largest multi-chip quantum computer with impressive performance. Our industry-leading proprietary ...