The epic stock rally will end badly, the AI bubble will burst, and the economy will sink, warns elite investor Jeremy Grantham

Stocks are super expensive and set to disappoint, the AI craze is overblown, and the US economy is "living on air," Jeremy Grantham said.

ai ai bubble bubble dot-com bubble economy epic gmo investor jeremy grantham markets mi exclusive rally recession set stock stock market bubble stock market crash stock market outlook stock rally stocks tech stocks us economy us markets and economy will