Michael Burry Launches Newsletter Warning of AI Bubble After Closing Hedge Fund

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The 'Big Short' investor who predicted the 2008 housing crash has launched a Substack newsletter to share his bearish views on AI valuations. Burry draws parallels between today's AI boom and past market bubbles, comparing current Fed Chair Powell's dismissive stance to Alan Greenspan's pre-2008 housing bubble comments.

The Big Short Investor Returns with AI Bubble Warnings

Michael Burry, the hedge fund manager who gained fame for predicting the 2008 housing market collapse, has launched a new Substack newsletter to share his increasingly bearish views on artificial intelligence investments. The investor, immortalized in Michael Lewis's "The Big Short" and the subsequent Christian Bale film, announced his new publication "Cassandra Unchained" on Sunday night, capitalizing on his 1.6 million followers on X

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Source: Observer

Source: Observer

The newsletter, priced at $379 annually or $39 per month, has already attracted over 35,000 subscribers within its first day of launch. Burry's decision to start the publication comes after he closed his hedge fund, Scion Asset Management, last month and returned capital to investors

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Drawing Parallels to Past Market Bubbles

In his announcement post, Burry drew explicit comparisons between today's AI investment frenzy and historical market bubbles. He referenced a February 21, 2000 San Francisco Chronicle report about his short position on Amazon during the dot-com boom, alongside then-Federal Reserve Chairman Alan Greenspan's 2005 assertion that a "bubble in home prices does not appear likely"

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The investor sees troubling echoes in current Fed Chair Jerome Powell's recent comments dismissing AI bubble concerns. During an October news conference, Powell stated that AI companies are "actually profitable" and represent "a different thing" from past speculative manias. Powell emphasized that "these companies, the companies that are so highly valued, actually have earnings and stuff like that"

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Burry views this dismissive stance as an "eerie echo" of Greenspan's pre-crisis assurances two decades ago. In one of his first Substack posts, he compared Nvidia—which recently became the first company to reach a $5 trillion market capitalization—to Cisco, the networking giant whose stock soared and then collapsed during the dot-com era

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Billion-Dollar Bets Against AI Giants

Burry's concerns extend beyond commentary into concrete investment positions. Regulatory filings revealed that his hedge fund held short positions worth more than $1 billion against AI market leaders Nvidia and Palantir before he closed the fund. These bets represent his conviction that current AI valuations are unsustainable, similar to his famous housing market short that generated $100 million personally and over $700 million for his clients

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The investor believes that, like the dot-com era, current market participants are "extrapolating exponential growth, dismissing profitability concerns and funding massive capital expenditures on the assumption that the technology will rewrite the economy"

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Freedom to Communicate Without Regulatory Constraints

Burry explained that closing his hedge fund was partially motivated by a desire to share investment insights more freely. "Running money professionally came with regulatory and compliance restrictions that effectively muzzled my ability to communicate," he wrote in his Substack description. "These constraints meant I could only share cryptic fragments publicly, if at all"

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The newsletter promises one to two posts weekly, along with occasional Q&As, videos, and guest contributions. Burry emphasized that he is "not retired" and that "there is still nothing I enjoy more than analyzing companies and markets each and every day"

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