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Michael Burry, the investor who famously bet against the housing market before the 2008 financial crisis, is now turning his forensic accounting lens on Big Tech. His target this time: the footnotes buried deep in SEC filings that he believes paint a misleading picture of how much the AI infrastructure buildout is actually costing companies like Oracle.
In a Substack post published on September 19, Burry laid out his case in a piece titled “The Heretic’s Guide to AI’s Stars Part IV: The Big 5 Hyperscalers & the Missing $3 Trillion.” The analysis picks apart the 10-K and 10-Q filings of Amazon, Meta, Alphabet, Microsoft, and Oracle, arguing that these companies’ accounting practices systematically obscure the true scale of their commitments.
The Oracle problem
Oracle sits at the center of Burry’s critique. The company reported fiscal Q1 2027 earnings on September 10, posting cloud infrastructure revenue of $7.39 billion. That’s a 121% jump year-over-year.
Oracle’s share price declined after the report. According to Burry’s analysis, Oracle has disclosed $261 billion in off-balance-sheet data center lease commitments. Many of those leases haven’t even started yet. They represent future obligations for facilities that aren’t operational, aren’t generating revenue, and aren’t currently sitting on the balance sheet where most investors would think to look.
Oracle raised its full-year revenue guidance to at least $90 billion following the earnings report.
Credit agencies are paying attention
S&P downgraded Oracle to BBB- in July 2026, citing high leverage from substantial AI investments. That rating sits just one notch above junk status.
Burry has maintained short positions against Oracle’s stock, a direct bet that the market is overvaluing the company relative to its actual financial health.
What the footnotes reveal
The core of Burry’s methodology involves reading the parts of financial filings that most analysts skip. Lease commitments, particularly those structured as operating leases that don’t appear on the balance sheet, can represent enormous future cash obligations without triggering the same investor scrutiny as traditional debt.
For the Big 5 hyperscalers collectively, Burry’s analysis suggests there may be trillions in such commitments that aren’t receiving adequate attention. The title of his piece references “the missing $3 Trillion,” pointing to what he views as a systemic gap between reported obligations and actual financial exposure across the sector.
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