Arqit Quantum ( ARQQ +0.44%) stock sank over the last week of trading as investors moved out of speculative growth stocks.

When 74% of traders on X say they believe quantum computing stocks are in a bubble… it’s probably worth paying attention. That was the question Twitter Tom posed during our latest Market on Close ...

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The very first computer to make use of the bizarre and unintuitive properties of quantum mechanics was born out of a collaboration between major universities and International Business Machines (NYSE: ...