Buffett Indicator Hits 229.7% in May as AI Trade Pushes Valuations Deeper Into Risk Zone
Updated
Updated · The Motley Fool · Jun 15
Buffett Indicator Hits 229.7% in May as AI Trade Pushes Valuations Deeper Into Risk Zone
2 articles · Updated · The Motley Fool · Jun 15
Summary
229.7%—the ratio of total U.S. market capitalization to GDP—marked a record May 2026 reading, extending a stretch above Buffett’s 200% “playing with fire” warning level.
AI-driven optimism has been a key force behind the surge, lifting valuations even after a recent 9% S&P 500 pullback that Buffett reportedly viewed as insignificant.
Historical peaks have preceded steep declines: the indicator reached 162.6% during the tech bubble before a roughly 50% S&P 500 drawdown, and 218.7% around the post-COVID peak before a 34% drop.
The gauge has stayed above 150% since 2020, suggesting today’s market is not just expensive by Buffett’s framework but at its most stretched level on record.
With AI stocks soaring, what hidden energy and supply chain risks could trigger the next market crash?
Is the AI revolution making Warren Buffett's most famous market indicator obsolete?
Buffett Indicator Hits Record High: What 236% Market Cap-to-GDP Means for Investors in 2026
Overview
In May 2026, the U.S. stock market reached a critical point, with the Buffett Indicator soaring to 236%, far above levels considered safe. This, along with a record-high Shiller CAPE ratio, signals that the market is highly overvalued and at increased risk of a correction. The rise is fueled by global technology giants whose revenues extend beyond the U.S., and by the dominance of passive investing, which pushes prices higher regardless of fundamentals. Experts warn that while these indicators are not precise timing tools, such extreme valuations have historically led to either sharp declines or long periods of weak returns, urging investors to be cautious and patient.