Michael Burry Debuts 'Cassandra Unchained', Critiques AI Boom in New Newsletter
November 24, 2025
His backstory highlights a contrarian, old-school approach with a track record beyond The Big Short, including early online ventures and dot-com-era results.
He announced the return on X (formerly Twitter), referencing past calls and drawing parallels to current AI profitability discussions from policymakers.
The piece frames this as a major shift in his investment stance, emphasizing a critical view of the AI boom and lofty stock valuations.
The newsletter costs $379 annually and promises a deep dive into why the AI market is bubble-like, with ongoing analysis and context.
Burry outlines a cadence of roughly one to two posts per week, plus Q&As and videos, focusing on analysis rather than active bets.
Michael Burry has launched a paid Substack newsletter, Cassandra Unchained, after closing his hedge fund Scion Asset Management, signaling a return to public commentary and a shift toward regular market analysis.
He argues the current AI rally resembles past tech bubbles, warning of supply-driven overbuilding and a few dominant players, with Nvidia central to the cycle as the Cisco-like anchor.
Burry draws a dot-com era parallel, noting exuberant valuations, potential overhang in AI infrastructure spending, and caution that demand may not meet the hype.
His first two posts outline his career shift and skepticism about the AI boom, labeling it a multi-part inquiry into what he calls a glorious folly.
He invokes Buffett and Munger-era prudence, suggesting not to pop the bubble as a way to stay respected and avoid crowd-driven hype.
A brief disclaimer about publisher positions is included, along with a notice directing readers to the disclosure policy.
Burry stresses he is not retired and intends to stay active in market analysis, publishing regularly on the blog.
Summary based on 8 sources
Get a daily email with more Tech stories
Sources

Business Insider • Nov 24, 2025
'Big Short' Michael Burry launches blog, takes aim at Nvidia, AI boom
Economic Times • Nov 24, 2025
Big Short' investor Burry targets AI boom with new blog after hedge fund closure
Moneycontrol • Nov 24, 2025
'Big Short' investor Michael Burry targets AI boom with new blog after hedge fund closure