What changed
Bank of England Governor Andrew Bailey warned on 1 October 2026 that the vast investment pouring into artificial intelligence could trigger shocks in financial markets. He said asset prices could face “some correction,” as Nvidia reached a reported $5.5tn valuation and Alphabet, Meta, Microsoft and Amazon committed hundreds of billions of dollars to AI.
Why it matters
Bailey’s warning is less a prediction of an imminent crash than a reminder that markets are treating the AI boom as if every major bet will succeed. That is a fragile assumption when OpenAI and Anthropic are also preparing potential US listings that could draw hundreds of billions of dollars more into the sector.
The Bank of England is watching the investment closely because a sharp reversal would test the resilience of the wider financial system. Bailey did not identify a trigger, timing or likely scale, and he did not say that AI valuations are currently in a bubble. But his point is clear: the technology may strengthen economic growth, while the prices attached to it can still fall hard if expectations outrun results.
The risks extend beyond markets. Bailey said AI could make cyber attacks more powerful by uncovering software vulnerabilities, and he described the quality of deepfakes as alarming after fake images showed him fighting Nigel Farage. He also said AI could speed up work supporting the Monetary Policy Committee, which sets UK interest rates. That combination makes AI both a possible productivity tool and a source of financial, security and public-trust problems.
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