The Truth About This 70% Crash Prediction: Time to Sell?

Jeremy Grantham just predicted a 70% stock market crash driven by the AI bubble. Should you sell? We break down why this famous "permabear" may be wrong. Jeremy Grantham, co-founder of GMO, has spent six decades calling bubbles. He got the Japanese bubble, the dot-com bust and the 2008 housing crash right. But he's also predicted a market crash every year since 2021, while the S&P 500 has risen over 100%. In this video, we look at the data behind Grantham's 70% crash prediction, examine why timing the market is nearly impossible (even for legendary investors like Michael Burry of The Big Short fame), and explain what a JP Morgan Asset Management study reveals about the real cost of sitting in cash during volatile markets. Whether you're worried about the AI bubble, mega cap stock concentration, or how to invest in 2026, this video explains why staying invested through uncertainty has historically been the smartest strategy for retail investors. Watch the full Diary of a CEO episode featuring Grantham here: www.youtube.com/watch?v=32u5T6lO8qk Timestamps: 0:00 Is a 70% stock market crash coming? 0:38 Who is Jeremy Grantham? 2:11 What is a permabear? 3:06 Why being early is the same as being wrong 4:00 Grantham's 44% track record 4:44 Called it too early: Japan and the dot-com bust 5:55 Why sitting in cash could cost you 6:44 Michael Burry's failed predictions 7:40 What JP Morgan found about timing the market 9:23 Grantham's actual investment advice #JeremyGrantham #MichaelBurry #StockMarketCrash #Investing -------------- Want to get involved? - Join our daily mailing list to stay up to date on all things in business and markets: https://equitymates.beehiiv.com/subscribe?ref=FKJsJ4smw9 - Ask us a question: https://equitymates.com/get-in-touch/ - Join the conversation in the Facebook Discussion Group https://www.facebook.com/groups/equitymates - Instagram: https://www.instagram.com/equitymates/ - X: https://twitter.com/EquityMates - TikTok: https://www.tik

Added 6 Aug 2026