Michael Burry, 'The Big Short' Investor, Slams Dot-Com Era Billionaires! Mark Cuban Responds with Self-Deprecating Humor as Two Investors Clash Over AI Bubble

Michael Burry, the investor famously portrayed in the film 'The Big Short,' has reignited debate in the investment world by launching a sharp critique on social media platform X against billionaires who rose to prominence during the dot-com bubble. His comments drew a witty, self-deprecating response from billionaire Mark Cuban, turning their exchange into a widely discussed moment in financial circles.

According to a report by Business Insider, Burry recently posted that between the collapse of Long-Term Capital Management (LTCM) in 1998 and the bursting of the dot-com bubble in March 2000, stock prices had already detached from fundamental values.

He stated, 'A bunch of complete idiots made permanent wealth during that period.' Burry added with sarcasm, 'One of them is still frequently in our ears today.'

Although Burry did not name anyone explicitly, Cuban—being one of the most iconic figures to emerge from the dot-com era—seemed eager to play along.

Cuban replied simply with 'complete idiots,' accompanied by a crying-laughing emoji, and shared an old post from 2025. The post listed 13 potential patent ideas that the legal team of Broadcast.com, the internet radio company he co-founded, had considered before its acquisition by Yahoo.

In 1999, Cuban sold Broadcast.com to Yahoo in a stock deal worth $5.7 billion, instantly becoming one of the most recognizable winners of the dot-com boom.

The patent ideas he listed at the time included geolocation of internet-connected devices, hybrid network architectures, reverse auction mechanisms, audio advertising, streaming authentication, and automated content recommendation—many of which foreshadowed technologies now commonplace in the digital world.

Notably, Burry has been consistently warning over recent months that investors are ignoring the risks of overvalued assets and blindly chasing the artificial intelligence (AI) hype, which could lead to severe consequences.

Previously, Burry posed the question on X: 'Am I the last one shorting?'

Cuban responded with his signature quote: 'In a bull market, everyone is a genius,' implying that during market rallies, even poor investment decisions appear brilliant in hindsight.

Importantly, this exchange occurred shortly after both investors expressed skepticism about the current AI infrastructure boom.

Burry has repeatedly warned that tech giants' massive investments in chips and data centers may soon become obsolete due to rapid technological shifts.

Cuban shares similar concerns, suggesting that efficiency gains could render parts of AI infrastructure redundant. He even joked that many future data centers might end up being converted into pickleball courts.