ECB Warns AI Stock Correction Threatens €440 Billion Euro-Area Holdings

The ECB said a correction in AI-driven stock markets could hit the euro area even if the technology delivers strong productivity gains, with euro-area households holding about €440 billion of exposure to US technology equities.

"Even if the technology succeeds, stock prices may eventually fall," researchers including Malin Andersson, Stefano Corradin and Kalin Nikolov wrote in a blog published Monday on the ECB's website. The post, titled "The AI boom: rational enthusiasm or the next dot-com bubble," concluded that economic research on past technological revolutions points to a correction in current valuations being likely.

The ECB compared the current AI boom with the railway expansion of the 19th century, the spread of electricity and radio in the 1920s, and the internet boom of the 1990s. In each case, new technologies drew investment and valuations of adopting companies rose sharply before falling. The bank offered two explanations: a rational view that high valuations stem from uncertainty over a new technology's productivity, and a behavioral view that overconfident investors push prices above fundamentals. Both imply a correction at some point, the ECB said, though it stopped short of declaring current prices have peaked.

A US tech correction would not stay a US problem. Euro-area households hold about €440 billion of exposure to US technology equities, largely through mutual funds and exchange-traded funds rather than direct holdings, with investors increasingly shifting into low-cost ETFs. Insurance companies and pension funds also hold significant exposure to the Magnificent Seven — Alphabet, Amazon, Apple, Tesla, Meta Platforms, Microsoft and Nvidia.

Risk premium rises as AI risk turns economy-wide

The ECB said the nature of risk changes as AI spreads across the economy. When the technology is at an early stage, a failure affects individual companies and the risk can be diversified. As adoption broadens, the uncertainty becomes economy-wide. "This risk cannot be diversified, so investors demand a higher risk premium," the ECB said.

That higher risk premium can pressure valuations even when AI adoption supports cash flows. Historically, the rise in the risk premium has tended to outweigh the positive effect of stronger cash flows, unless profit growth is strong enough to compensate. The exact timing of any correction cannot be established in advance, the ECB said.

If AI proves sufficiently powerful, valuations could rise further even after a correction, the bank added. "We currently cannot tell where we are on this path," the researchers wrote.

€440 billion fund exposure opens a transmission channel

The fund-based structure of euro-area holdings could become a transmission channel during a sharp correction. Funds may have to sell assets to meet redemptions, first offloading liquid holdings and then distressed assets, pushing valuations down further and triggering more 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 said.

The euro area's own technology sector presents a smaller risk of a home-grown correction because valuations, while higher, remain considerably below US levels, with price-to-earnings ratios well under those in the United States. Euro-area stock markets are also dominated by "old economy" stocks, limiting direct exposure to AI-driven gains. Yet US and euro-area markets have historically been highly correlated, and the effects of a US correction could extend to euro-area sentiment, financing conditions and hiring.

The ECB also warned that the euro area has less room than during the dot-com episode to cushion the impact of broader market instability. Interest rates are already low, limiting scope for further monetary easing, while fiscal policy is more constrained, reducing the ability of governments to offset the shock through spending.

This article is for informational purposes only and does not constitute investment advice.