Experts Warn: AI Boom Shows Bubble Signs, but Investors May Miss the Exit

By Finance News On Nov 10, 2026

The artificial intelligence (AI) investment boom is showing many of the hallmarks of a market bubble, with soaring valuations, rising leverage and increasingly speculative capital flows prompting warnings from veteran investors at the New Orleans Investment Conference.

During a popular annual panel discussion titled “Booms, Busts and Bubbles,” mining financier Frank Giustra, market commentator Jim Iuorio and investor Grant Williams agreed that the enthusiasm surrounding AI has pushed markets into dangerous territory. However, they cautioned that recognizing a bubble is only part of the challenge.

Knowing when it will burst — and how to protect capital before it does — is considerably harder.

The discussion, moderated by Luma Financial founder and President Albert Lu, focused on the concentration of market gains in a handful of technology companies, the financing structures supporting AI infrastructure spending and the potential economic and social consequences of another major market correction.

The S&P 500 (INDEXSP:.INX) has climbed from below 4,000 in 2022 to approximately 7,600 today, driven largely by the AI investment cycle that followed the launch of ChatGPT.

AI infrastructure companies now account for roughly 90 percent of capital expenditures, while the sector contributes approximately 80 percent of S&P 500 earnings growth, Lu noted. But the scale of the rally is raising questions about whether investor expectations have moved too far ahead of underlying fundamentals.

AI boom carries familiar bubble characteristics

For Iuorio, the speed of the rally is an immediate warning sign.

“When you see a stock like Micron Technology (NASDAQ:MU) being up 300 percent in eight weeks’ time, you have to know that something’s up,” he said, agreeing that the market is in a bubble.

Giustra pointed to the Buffett Indicator, which compares total stock market capitalization with gross domestic product, as another indication of excessive valuations. The measure has reached approximately 240 percent, well above the 150 percent level recorded at the height of the dot-com bubble.

Although today’s leading technology companies generate substantial earnings, Giustra argued that this does not eliminate the risks associated with excessive spending and speculation.

“There will be a reckoning, and some of these companies will get destroyed,” he said, warning that when the bubble bursts, the broader market will also suffer.

The panelists acknowledged that AI could prove as transformative as previous technological breakthroughs, including railroads, automobiles, aviation and the internet. However, transformative technologies have not necessarily translated into successful investments at every stage of their development.

Lu recalled that even investors who identified Amazon (NASDAQ:AMZN) as one of the strongest companies during the dot-com era would have experienced a loss of approximately 90 percent before…