https://www.live-feeds.com/feed/jeremy-grantham-warns-u-s-stocks-could-plunge-70-in-the-most-expensive-market-in-historyContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/jeremy-grantham-warns-u-s-stocks-could-plunge-70-in-the-most-expensive-market-in-historyhttps://www.live-feeds.com/feed/jeremy-grantham-warns-u-s-stocks-could-plunge-70-in-the-most-expensive-market-in-history#u23719Sat, 04 Jul 2026 02:57:06 +0000GMO co-founder Jeremy Grantham warns that US equities are in the most expensive market in history. He predicts a potential 70% decline as the AI-driven bubble bursts. Grantham advises investors to flee US stocks and diversify their allocations.What's confirmed:Jeremy Grantham is the co-founder of GMO.Grantham warns of a potential 70% plunge in US stocks.The current US market is described by Grantham as the most expensive in American history.Grantham attributes the current market bubble to AI.GMO manages approximately $85 billion.Still unconfirmed:AI giants could see a 92% drop similar to Amazo