Lamont Warns World Stocks Match Dotcom-Era Wildness as Dispersion Hits 15.6%
Updated
Updated · Fortune · Jun 12
Lamont Warns World Stocks Match Dotcom-Era Wildness as Dispersion Hits 15.6%
2 articles · Updated · Fortune · Jun 12
Summary
April-May dispersion in global equities reached 15.0% and 15.6%—the third- and fourth-highest readings since 1995—prompting Owen Lamont to say the market is now as wild as the tech-stock bubble.
Micron’s 87.8% May surge and SK Hynix’s 78.6% jump drove the alarm: despite sub-1% ACWI weights, the two chip stocks generated 17% of the index’s 5.2% monthly return.
Lamont said the latest trigger is not just a record IPO pipeline—Goldman now sees $225 billion in proceeds—but also earnings optimism, with long-term S&P 500 growth forecasts at 20.2%, above the 2000 peak of 18.6%.
JPMorgan’s Jamie Dimon, Bridgewater’s Ray Dalio and Goldman’s James Covello have also flagged exuberance, while the Cboe S&P 500 Dispersion Index near all-time highs suggests traders expect the volatility to persist.
Lamont still stops short of calling a definitive bubble, arguing AI spending could reflect rational repricing as much as speculation, even as benchmarked active managers already face sharp underperformance if they miss the biggest winners.
As a record IPO wave meets 'season of chaos' warnings, how can investors spot rational pricing from irrational hype?
With markets mirroring 1929 and 2000, are today's tech giants strong enough to prevent another historic crash?
Is the AI boom building real value, or are we just watching a high-tech repeat of the dot-com bubble?
2026 Market Turbulence: Historic Return Dispersion, AI-Driven Valuations, and Looming Bubble Signals
Overview
The global stock market is undergoing intense turbulence, with volatility and return dispersion reaching levels not seen since the tech bubble era. This shift began in April 2026, as the excitement around Artificial Intelligence (AI) drove dramatic price movements, especially in technology stocks. The resulting environment is marked by a wide divergence in stock performance, signaling a significant change in market dynamics. Investors now face the challenge of navigating a landscape that could be a bubble, a repricing event, or a mix of both, making careful strategy and vigilance more important than ever.