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quantum computing stocks 2026

Quantum computing has become one of the few sectors where a scientific milestone and a commercial milestone are routinely reported as the same event. They are not. A laboratory result demonstrating longer coherence times or a lower logical error rate is genuine progress in physics. It says almost nothing about whether the company that produced it will sell anything at scale this decade. The gap between those two statements is where most of the volatility in quantum shares lives.

• Is the result peer-reviewed, or a corporate blog post timed to a market open?
• Does the claimed advantage compare against a genuinely optimised classical algorithm, or against a deliberately weak baseline?
• Is the customer named, and is the contract value disclosed, or is it a 'partnership' with no financial terms?
• Does the company report bookings and backlog, or only cumulative announcements?