Investor Who Predicted 2008 Bubble Says Sell US Stocks Before 70% Drop

Jeremy Grantham warned that a speculative AI-driven bubble has pushed US stocks to extreme valuations and could trigger a decline of up to 70%. He said the market is the most expensive in American history and advised investors to move away from US equities and into bonds, gold, and foreign stocks. The piece frames the warning as a broader risk-off signal for markets, especially because Bitcoin has been trading with tech-like sensitivity to US equities. It also notes that US spot Bitcoin ETFs recently saw a record 30-day outflow of $6.35 billion, reinforcing a defensive tone across risk assets. While Grantham’s call could prove early, his track record gives the warning market relevance.