Russ Mould of A J Bell looks at the disruption to US AI stocks caused by the arrival onto the scene of Deep Seek. If it indeed turns out to be cheaper to train and run, then it throws an enormous spanner in the wheels of the American tech stocks. It also shows just how incredibly volatile those highly-priced shares are. Russ recalls that after previous tech bubbles burst, those stocks went into the deep freeze for long periods. In the UK most of our silicon tech stocks have been taken over so we are less affected and perhaps the inherent value of the UK market will offer some protection.

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