Dimon said when the bubble will burst is hard to predict.

“AI better deliver for the U.S., or its economy and markets will lose the one leg they are now standing on,” warns Ruchir Sharma of Rockefeller International.

Lots of companies will implode in the short term, but a few will emerge as the Googles and Amazons of the AI era.

The top five members of the S&P 500 command nearly 30% of market share, a record high for any point over the past 50 years.

JP Morgan boss Jamie Dimon said he was 'far more worried than others' about the risk of a serious correction.

Dimon said when the bubble will burst is hard to predict.

“It seems you can’t go anywhere without talking about AI,” says Aditya Bhave, senior U.S. economist at Bank of America Research.