Money

Billionaire Investor Warns US Stock Market Faces 70% Crash Within Years

Diary of a CEO · Stock Market EMERGENCY: Sell Your Stocks Now, The Collapse Is Weeks Away! · June 25, 2026

Diary of a CEO

Stock Market EMERGENCY: Sell Your Stocks Now, The Collapse Is Weeks Away!

"We're in the biggest investment bubble in American history. From these unprecedented levels, a 70% decline would not be unexpected. The indicators of pure crazy euphoria, like SpaceX, are all over the place."

Jeremy Grantham, who managed $165 billion at his peak, predicts the US stock market could drop 70% in the coming months or years, calling it the largest bubble in American history. He compares current conditions to the 2000 tech bubble and Japan's 1989 crash, which took 35 years to recover. Grantham argues AI hype mirrors past bubbles around transformative technologies like railroads and the internet, which crashed despite eventually changing the world.

About this episode

In this episode, host Stephen Bartlett interviews Jeremy Grantham, the legendary investor who managed up to $165 billion and has successfully predicted multiple market bubbles over six decades. Grantham opens with a stark warning: the US stock market is in the largest bubble in American history and could crash 70% in the coming months or years, driven by AI hype reminiscent of past bubbles around railroads and the internet. He reveals how major Wall Street firms have never warned clients to exit overpriced markets since 1929 despite their own analysts predicting crashes, creating what he calls a 'huge betrayal of trust.' Grantham urges investors to divest from US stocks entirely, recommending foreign equities, bonds, and precious metals instead. The conversation pivots to an even darker threat: a fertility crisis driven by endocrine-disrupting chemicals. Citing research by Dr. Shanna Swan, Grantham explains that male sperm counts are declining 2.5% annually and could hit zero by 2045, with 17% of couples already needing fertility assistance. He attributes this to plastics, pesticides, and cosmetics, noting the US allows 85 pesticides banned elsewhere and has banned only 12 cosmetic chemicals compared to the EU's 1,500. Grantham argues the US maternal mortality rate—the worst in the developed world at 50% higher than the next worst country—reflects a dissolving social contract. He advises pregnant women to avoid cosmetics and eat organic produce, warning that toxins embedded in fetuses cause generational damage. The billionaire, who has donated over 90% of his wealth to environmental causes, calls for detoxifying both capitalism and the chemical environment, predicting tougher economic times ahead driven by extreme inequality and resource constraints. He concludes by recommending Americans consider relocating to countries like Denmark or Germany with stronger social safety nets.

Key takeaways

Grantham predicts the US stock market could crash 70% from current levels, calling it the largest bubble in American history driven by AI euphoria.
Wall Street firms have never advised clients to exit overpriced markets since 1929 despite internal analysts predicting crashes, a betrayal driven by career risk.
Male sperm counts are declining 2.5% annually and could hit zero by 2045, with half the male population potentially infertile within 20-25 years.
The US allows 85 pesticides banned in the EU, China, and Brazil, and has banned only 12 cosmetic chemicals versus the EU's 1,500.
US maternal mortality is 50% worse than the next worst developed country, with 20-21 deaths per 100,000 versus Norway's zero, reflecting systemic inequality.
Grantham recommends divesting entirely from US stocks in favor of foreign equities, bonds, and precious metals, contrary to conventional investment advice.
Pregnant women should avoid all cosmetics and eat organic produce to protect fetuses from endocrine disruptors that cause generational reproductive damage.