The AI boom: rational enthusiasm or the next dot-com bubble?

ECB staff blog arguing a correction in AI-driven equity valuations should be expected regardless of whether current prices are rational, and that the euro area would not be insulated. Quantifies euro area channels: roughly EUR 440 billion of household exposure to US tech equities, mostly via funds and ETFs, plus insurer and pension fund holdings. Explicit disclaimer that views are the authors', not the Governing Council's. No policy content: this is financial stability commentary, not a rate signal.

What’s new: Nothing material for policy. The AI-valuation-risk theme has been in the ECB Financial Stability Review and in Lagarde's remarks for over a year. Genuinely new is the granularity: the SHS look-through numbers putting euro area household exposure to US tech equities at about EUR 440 billion, mostly via low-cost ETFs, and the flat statement that a correction should be expected even if valuations are rational. Also worth logging the line that policy space to cushion a bust is thinner than in the dot-com episode.

KEY FINDINGS

• The authors say a correction is likely and that the case for expecting one "is not dependent on whether today's prices are rational or irrational". ECB staff are pre-committing to a warning that does not require calling a bubble, which makes it easier to repeat in official FSR communication.
• Euro area households hold around EUR 440 billion of exposure to US technology equities, largely through mutual funds and ETFs, "without necessarily being aware of the associated concentration risk". Frames a US equity drawdown as a euro area retail wealth and fund-redemption problem, supporting the macroprudential case on fund liquidity rather than any rate action.
• Redemption-driven forced selling by funds is identified as a transmission channel, making a Mag7 correction "a question of financial stability for the euro area, rather than just a private one". Keeps the ECB's focus on NBFI liquidity tools and reinforces the standing bid for a policy response via facilities rather than cuts.
• "unlike in the dot-com episode, today's starting point leaves markedly less room to cut interest rates or use fiscal policy to cushion the fallout". A staff acknowledgement of limited conventional policy space if the AI trade unwinds, which cuts against pricing a large easing reaction function to an equity shock.
• Euro area valuations are judged considerably less stretched than US, ICT productivity and markups rising, digital services business climate not exuberant, and digital investment growth over the past decade more than three times cumulative GDP growth. Home-grown bubble risk is downplayed: the channel is correlation and wealth effects, not domestic overvaluation.

FROM THE DOCUMENT

We argue that economic research on past technological revolutions points to a worrisome conclusion: a correction of current stock market valuations is likely.

Euro area households, which are increasingly channelling funds into low-cost ETFs, have around €440 billion of exposures to US technology equities without necessarily being aware of the associated concentration risk.

The views expressed in each blog entry are those of the author(s) and do not necessarily represent the views of the European Central Bank and the Eurosystem.