Citigroup predicts that the stock‑market gains linked to the current artificial‑intelligence (AI) boom could last for a while longer. “The AI bubble is not over yet” said Dirk Willer, head of macroeconomics and asset allocation at Citigroup, during an interview with the “Handelsblatt Invest” podcast on Wednesday.

Willer, a veteran Wall Street analyst who witnessed the early‑2000s dot‑com bubble in New York, maintains that the markets will once again see excessive speculation. “The more impressive a technology is, the more people over‑invest” he said.

With American tech giants pouring billions into AI, investors are understandably seeking broader diversification. But they should keep in mind that if a tech bubble bursts, almost all asset classes are likely to decline, Willer warned.