The European Central Bank economists highlight concerns that the current surge in stock prices, largely attributed to the AI boom, may be unsustainable. They reference historical technological revolutions, such as the railway boom and the internet rise, which often led to overvaluation and subsequent corrections.
The economists suggest that investor overconfidence could inflate stock prices beyond their fundamental values, leading to a crash when optimism wanes. They also warn that even if current valuations accurately reflect AI's potential, a correction is still likely as uncertainty spreads throughout the economy.
This could result in a demand for higher risk premiums, further driving down stock prices despite ongoing profit growth. The blog emphasizes the need for investors to prepare for potential fallout, particularly noting that European retail investors may be more exposed than they realize due to the prevalence of high-profile stocks in global index and pension funds.
Additionally, the economists caution that a sharp correction could have broader implications for euro area stability, especially given the limited capacity for monetary or fiscal policy intervention compared to past downturns