The Diary Of A CEO with Steven Bartlett
The Diary Of A CEO with Steven Bartlett

Billionaire's WARNING: I'm SELLING. The Crash Is Already Here!

June 24, 2026

AI Summary

5 min read

The Biggest Bubble in History Is Here, and the Advice You’re Getting Is Wrong

Jeremy Grantham has spent 60 years managing money—at his peak, $165 billion. He helped invent value investing and index funds. And his message to anyone listening right now is unsettling: the US stock market is in the biggest investment bubble of his lifetime, and the people you pay for financial advice will never tell you to get out.

Grantham’s argument is not that artificial intelligence is a scam. He calls AI “right up there with the railroads”—a genuinely world-changing idea. That is precisely the problem. The great bubbles of history always form around the most important ideas. Railroads changed the world, then collapsed as stocks. The internet changed the world; Amazon went up 607 times in the 1990s, then lost 92% of its value in the crash. AI will change everything too, and that obvious promise is drawing so much capital that Grantham believes we are approaching a peak. “If you look at the data,” he says, “it would be compatible with history for the peak to be very soon.”

What a Bubble Actually Looks Like

Continue reading the full summary in the app — free to try.

Read Full Summary →

Free • No credit card required

Listen to Audio Summary Open in App

What you'll learn

  • 1 (01:00) **Core investing advice from Jeremy Grantham** - Direct recommendations on where average people should put wages and salary
  • 2 (01:34) **Guest introduction and track record** - Who Jeremy Grantham is and why his views carry weight
  • 3 (04:53) **The nature of bubbles** - Why bubbles form around the most important ideas
  • 4 (06:47) **AI bubble assessment** - Current indicators and timeline expectations
  • 5 (10:23) **What a major bubble collapse means for ordinary people** - Economic and personal consequences
  • 6 (13:33) **Defensive strategy for non-wealthy individuals** - Concrete allocation guidance before a downturn
  • 7 (18:52) **Non-US equities recommendation** - Why foreign stocks are favored over American ones

+ Full timestamped outline available in the app

Guests on this episode

Jeremy Grantham

Show Notes

The man who predicted the dot-com crash and the 2007 housing collapse warns that the AI bubble is the biggest in American history. Billionaire investor Jeremy Grantham reveals why it will burst, the exact strategy to protect your money, and why house prices need to fall 30%. 

Jeremy Grantham is the co-founder of GMO, an institutional investment firm in Boston, and serves as the firm’s long-term investment strategist. He is also the chairman of the Grantham Foundation For the Preservation of the Environment, and co-author of “The Making of a Permabear: The Perils of Long-term Investing in a Short-term World”.


Jeremy Grantham's comments are all his personal opinions and not the opinions of GMO.


He explains: 

◼ Why Wall Street will never warn you when to get out of the market, and what to do instead

◼ The exact portfolio Jeremy recommends to protect your money before the crash

◼ What everyday chemicals in your food and cosmetics are doing to your fertility

◼ Why house prices need to fall 30%, and what it means for your finances

◼ Why the AI boom won't automatically lead to higher profits, and what to buy instead


Chapters

  • 00:00:00 Who Is Jeremy Grantham?
  • 00:02:34 Will AI Become The Next Financial Bubble?
  • 00:06:38 How Jeremy Grantham Built An Investing Empire
  • 00:07:45 The Most Money He's Ever Managed
  • 00:08:09 Are You A Billionaire?
  • 00:08:58 What Happens When The AI Bubble Bursts?
  • 00:11:15 How AI Will Change Everyday Life
  • 00:12:33 The Investing Strategy For Right Now
  • 00:17:52 Why You Should Avoid US Stocks
  • 00:19:54 Why Investment Advisors Mislead Clients
  • 00:25:32 Advice For Entrepreneurs Right Now
  • 00:28:22 The Real Risks Of AI
  • 00:29:21 Should AI Have A Maternal Instinct?
  • 00:34:06 What Happens If AI Lacks Benevolence?
  • 00:35:44 The Battle Between The Magnificent 7
  • 00:39:10 Ads
  • 00:41:19 Which Jobs AI Will Replace First
  • 00:43:41 Will SpaceX Eventually Fail?
  • 00:49:52 Should You Invest In SpaceX?
  • 00:50:02 The Most Valuable Skill For The Future
  • 00:51:04 Is Society Declining And What Comes Next?
  • 00:53:25 What History Says About Wealth Inequality
  • 00:55:58 Should The Rich Pay More Tax?
  • 00:57:21 How To Build Wealth In Your 30s Today
The Diary Of A CEO with Steven Bartlett

More from this podcast

The Diary Of A CEO with Steven Bartlett →