Editor’s note: Columnist Charlie Garcia shares select emails and online comments from his virtual mailbag each week.

Advances in quantum computing this year clarified timelines and forced a reassessment of Bitcoin’s future security.

Quantum computing promises a new generation of computers capable of solving problems hundreds of millions of times more quickly than today’s fastest supercomputers. This is done by harnessing spooky ...

While pure plays like IonQ and Rigetti Computing get most of the attention, investors can gain exposure to quantum computing through big tech. Over the last three years, investors have been witnessing ...

Pure-play quantum computing stocks have performed strongly throughout 2025. One outlier is Quantum Computing Inc., whose shares are trading 50% below prior highs. Investors may have tired of Quantum ...

Based on historical trends, the script is likely to flip for quantum computing pure-play stocks in 2026. If you think artificial intelligence (AI) is the only hot trend on Wall Street, you haven't ...

Buterin warns that quantum computers could threaten Ethereum’s cryptography sooner than expected and outlines how the network can prepare safely. Buterin sees a nontrivial 20% chance that quantum ...

Inside IBM’s main research center rises a maze of silver towers, each 22 feet tall. Through their vented flanks, you catch glimpses of blinking lights and the shadows of wires. The machine’s ...

For the past decade, quantum computing has struggled to balance promise and practicality. While the world’s most advanced systems remain engineering marvels, they’re bedeviled by the same flaw: the ...

Quantum Computing Inc. develops room-temperature photonic quantum hardware, targeting specialized applications rather than universal quantum computers. QUBT's technology offers cost and accessibility ...

Pure-play stocks IonQ, Rigetti Computing, D-Wave Quantum, and Quantum Computing Inc. have soared by as much as 545% over the trailing year. Investors have been enamored with the sizable addressable ...