The European Central Bank warned in an article that US technology stocks, lifted by the AI boom, may be overheating and face a high probability of a valuation correction. It said any such move could deliver economic damage that is harder to absorb because fiscal and monetary policy have limited room to respond.
AI enthusiasm has pushed valuations higher
According to the ECB article, investors have continued to raise their bets on the view that AI will fundamentally reshape the global economy. That has driven valuations for major technology companies well above historical averages. The article said economic research on past major technological revolutions points to a very high likelihood that the market will eventually correct.
Even successful AI adoption may not support current prices
The ECB said stock prices could still fall even if AI ultimately delivers and corporate earnings grow. The reason, it said, is that investors may already be pricing in earnings growth that is too optimistic. If actual profit performance fails to fully meet those elevated expectations, valuations could come under pressure.
Sentiment could deepen the decline
The article also looked at market psychology, saying overly optimistic investors can push share prices beyond levels justified by fundamentals. Once that optimism fades, the pullback can be more severe than a correction driven only by rational repricing.
Less policy room than during the dot-com era
The ECB said the bigger concern is not just a stock market correction on its own, but a scenario in which a correction arrives alongside broader market turbulence while policymakers struggle to calm conditions. Compared with the early 2000s dot-com period, the starting point now leaves less room for rate cuts, and fiscal policy also has less space to buffer the shock.
The timing cannot be known in advance
On when such a correction might happen, the article said plainly that the timing cannot be predicted beforehand. It added that these boom-and-bust cycles are often only clearly identified in hindsight.