Investor Warns of Biggest Bubble Ever: AI

Summary

Jeremy Grantham, who managed up to $165 billion, advises avoiding US stocks entirely, including the S&P 500, and selling any large technology stock positions. He also strongly discourages cryptocurrency, calling it "unnecessary nonsense" that facilitates criminal activity and predicting Bitcoin will go to zero. Grantham believes AI is the largest investment bubble in history, comparable to railroads and the internet, and predicts a collapse within the next few years. He warns that such bubbles always burst, leading to tough economic times, with the bigger the bubble, the bigger the bust. For those without significant savings, he stresses diversification into bonds and cash, suggesting investments outside the US, as foreign stocks are currently cheaper and have outperformed. He points to historical parallels like the Japanese stock market bubble in 1989 and the US tech bubble, where markets took decades to recover. Grantham also advises entrepreneurs to secure as much capital as possible and build conservatism into their operations, bracing for impending problems. He criticizes the current economic inequality, noting that since 1975, average hourly wages have barely increased, while wealth has disproportionately benefited the top 10%.