The claim is strongly supported by multiple independent, high-authority sources. CNBC reported on May 8, 2026 that Burry published a Substack post comparing current markets to 'the last months of the 1999-2000 bubble.' The Moneywise article and Stocktwits article both independently corroborate this, citing the same Substack post (substack.com/home/post/p-197176852). The @unusual_whales X post (the original linked source) and @tenet_research both summarize the same warning consistently. All sources agree on the core claim: Burry warned that markets are showing bubble-like signs, driven by AI hype and momentum trading, with conditions resembling the late dot-com era. The convergence of a major financial news outlet (CNBC), multiple financial news sites, and the original X post leaves very little doubt about the veracity of the claim.