European Central Bank Warns AI Stock Rally May Be Headed for a Pullback
Economists at the European Central Bank have sounded the alarm on the current AI stock rally, warning that it may be headed for a pullback.
The warning comes after a blog post published by the central bank on Monday, August 18, 2026, in which economists pointed to past technological revolutions as evidence of a potential correction.
They drew parallels between the current AI boom and previous instances such as the railway mania of the 1840s, the electrification and radio boom of the 1920s, and the internet bubble of the late 1990s. In each case, stock prices outpaced actual earnings growth before eventually correcting sharply.
The economists identified two possible paths to a downturn: the classic bubble scenario where overconfident investors push stock prices above true value, followed by a shift in sentiment that triggers a crash; and a second path where even if AI is valuable, widespread adoption could create uncertainty that hurts the economy as a whole.
The warning suggests that a risk premium will push prices lower over time, even if company profits remain strong. The exact timing of such an event remains unknown, but the economists cautioned that both scenarios point to a boom followed by a correction, possibly followed by recovery and more gains.