Jamie Dimon Warns AI, Big Tech Valuations Show Too Much Exuberance as Boom Tops 1990s Bubble by 60%
Updated
Updated · Fortune · May 22
Jamie Dimon Warns AI, Big Tech Valuations Show Too Much Exuberance as Boom Tops 1990s Bubble by 60%
4 articles · Updated · Fortune · May 22
JPMorgan CEO Jamie Dimon said in a Bloomberg TV interview that AI and Big Tech markets may be showing “too much exuberance,” signaling concern that prices have run ahead of fundamentals.
Panmure Liberum argued the AI boom is already 60% larger than the late-1990s TMT bubble by tech capex’s contribution to U.S. GDP growth, with hyperscalers needing an extra $2 trillion to $5 trillion in annual revenue to justify spending.
Dimon’s warning carries extra weight because he has remained broadly bullish on AI’s long-term productivity gains, while still saying some asset prices have entered bubble territory.
Deutsche Bank research cited in the report says markets may be pricing a best-case AI outcome even as deficits, aging populations, political strain and weaker hedges leave investors more exposed to a sharp repricing.
Can AI's productivity boom overcome record global debt and deepening geopolitical fractures before the market's 'exuberance' runs out of time?
The AI bubble is reportedly 60% bigger than the dot-com bust. With safe havens failing, where can investors find shelter from the fallout?
"AI Exuberance at a Crossroads: Risks, Valuations, and the $725 Billion Tech Spending Surge in 2026"
Overview
In May 2026, financial markets are showing signs of excessive exuberance, with the S&P 500 hitting record highs even as consumer sentiment drops to historic lows. This disconnect is fueled by high equity valuations, especially in the technology sector, where the Shiller PE ratio exceeds 40 and some funding rounds reach 150 times revenue. Major tech stocks like NVIDIA and the 'Magnificent Seven' have delivered extraordinary returns, but this rapid growth is concentrated in a few companies, raising concerns about sustainability. The current environment suggests that market optimism may be outpacing real economic fundamentals, increasing the risk of a correction.