ECB Economists Warn AI Rally Sets Stage for Likely Stock-Market Correction

European Central Bank economists warned Monday that the blistering rally in technology stocks fueled by artificial intelligence enthusiasm is likely to end in a correction, and that the euro area faces particular risks due to limited policy room and large exposure to the so-called Magnificent Seven companies.

In a blog post published Monday, the researchers laid out two scenarios — a rational view and a behavioral view — both of which lead to the same conclusion: a boom followed by a correction, or a pullback from elevated valuations, at some point in the future.

The rational view holds that high valuations are justified by extreme uncertainty about AI’s effect on productivity. Investors effectively place an options-like bet: in the worst case, they lose their investment, but in the best case gains are large and hard to bound. This drives price-to-earnings ratios sharply higher.

The behavioral view holds that overconfident and overoptimistic investors push prices beyond fundamentals. When that optimism fades, the fall tends to be sharper than in the rational scenario, the economists said.

Even if AI succeeds and profits rise, stocks may still decline, the blog argued. As the technology spreads across the economy, the risk of failure becomes economy-wide rather than company-specific. That nondiversifiable risk forces investors to demand a higher risk premium, which historically has outweighed the positive effect of stronger cash flows, unless profit growth is strong enough to compensate.

“Economic research on past technological revolutions points to a worrisome conclusion: a correction of current stock market valuations is likely,” the blog said, while noting the views do not necessarily reflect the ECB’s official position.

The economists compared the current AI boom to historical precedents including the 19th-century railway expansion, the rollout of electricity and radio in the 1920s, and the 1990s internet boom. In each case, transformative technologies attracted investment and valuations rose sharply before falling.

The exact timing of any correction is unknowable, the blog said. “These boom-bust patterns are only identifiable with hindsight,” the economists wrote.

For Europe, the stakes are high. Euro-area households have roughly €440 billion of exposure to the Magnificent Seven stocks — Alphabet, Amazon, Apple, Meta Platforms, Microsoft, Nvidia and Tesla — according to the blog. Insurance companies and pension funds hold a similar amount.

Most of that exposure comes through investment funds, including mutual funds and exchange-traded funds, rather than direct shareholdings. During a sharp correction, funds may be forced to sell assets to meet redemptions, first liquid holdings and then distressed assets, pushing valuations further down and triggering additional redemptions. “This is why a Mag7 correction is a question of financial stability for the euro area, rather than just a private one,” the ECB economists said.

The euro area’s own technology sector poses a smaller risk of a home-grown correction, the blog noted. Euro-area equity valuations have risen but price-to-earnings ratios remain well below US levels, and the region’s stock markets are dominated by old-economy stocks. However, US and euro-area markets have historically been highly correlated, so local equities would still take a hit.

The effects of a US correction could extend beyond financial markets to euro-area sentiment, financing conditions and hiring, the economists wrote. “A US AI fallout would not remain a US problem,” they said.

Perhaps most important, the blog warned that policymakers today have markedly less room to cushion the fallout than during the dot-com episode two decades ago. “Unlike in the dot-com episode, today’s starting point leaves markedly less room to cut interest rates or use fiscal policy to blunt the potential economic hit,” the blog said.

The analysis was published as US and European stock markets trade near record highs on AI-fueled optimism. As noted separately by futurism.com, chip giant Nvidia swelled to become the first $5 trillion company last October on the mere possibility that a quantitative leap in AI’s abilities could emerge — a bet that has yet to be fully realized.

The blog did not state that current prices have reached a ceiling. If AI proves sufficiently transformative, valuations could rise further even after a correction, the economists noted.