Michael Burry Targets AI Stocks Over Hidden Debt Risks

Michael Burry, the investor known for his contrarian bets, is once again challenging Wall Street's consensus-this time by shorting two high-profile names in the artificial intelligence infrastructure boom. According to recent disclosures, Burry has taken direct short positions against Oracle and Nebius Group, signaling his skepticism about the durability of the AI trade that has captivated markets over the past year.

Burry's approach is rooted in identifying market narratives that appear unassailable, then probing for structural weaknesses that could unravel them. In this case, he's focused on the growing leverage and off-balance-sheet commitments that many cloud and AI infrastructure companies have accumulated. These include long-term leases for data centers, power contracts, and hardware capacity-obligations that may not be fully reflected in headline financials but represent significant future cash outflows.

Shorting Both Winners and Losers

On August 6, Burry disclosed a short position in Oracle at $144.63 per share and a larger short in Nebius Group at $211.77. Oracle, despite a 25.7% decline year-to-date and a 43.4% drop over the past 12 months, remains a major player in enterprise cloud. Nebius, by contrast, has soared 126.8% year-to-date and 244.7% over the past year, according to Yahoo Finance. Burry's simultaneous bets against both a laggard and a high-flyer suggest he's less concerned with recent stock performance and more focused on underlying financial structures.

His thesis centers on the risk that companies have pulled forward years of AI infrastructure demand into a short window, locking themselves into multi-year commitments at peak prices. If demand growth slows or the supply cycle shifts, these fixed costs could squeeze margins and expose over-leveraged balance sheets. This pattern echoes Burry's previous moves in the semiconductor and equipment space, where he has also targeted companies with heavy capital commitments.

Oracle: Strong Revenue, Hidden Liabilities

Oracle's latest quarterly results were robust by most measures. For the fourth quarter of fiscal 2026, total revenue reached $19.2 billion, up 21% year-over-year, with cloud infrastructure revenue jumping 93% to $5.8 billion. The company's remaining performance obligations-a measure of contracted but not yet recognized revenue-grew by $85 billion in a single quarter, reaching $638 billion. Guidance for the first quarter of fiscal 2027 calls for revenue growth of 27% to 29%.

Yet Burry's short is not a bet against Oracle's ability to generate revenue or deliver on its cloud strategy. Instead, he's targeting the risk that the company's capital expenditure requirements to fulfill these obligations could outpace revenue recognition, eroding earnings quality. Oracle has committed more than $20 billion in capital expenditures for 2026, a figure Burry appears to view as a potential vulnerability if market conditions shift.

Nebius: High Growth, High Volatility

Nebius represents a different kind of risk. The company reported first-quarter 2026 revenue of $399 million, up 684% year-over-year, and positive adjusted EBITDA of $129.5 million. Management reaffirmed full-year revenue guidance of $3.0 billion to $3.4 billion. Yet Burry opted for a direct equity short rather than using options, citing implied volatility above 100% that made puts prohibitively expensive.

Consensus estimates for Nebius's upcoming second-quarter results, due August 12, project revenue of about $578 million and a loss of $0.52 per share, according to Zacks Equity Research. The company's rapid growth has required aggressive capital spending and long-term commitments, which Burry sees as a potential liability if the pace of expansion slows or costs rise unexpectedly.

Contrasting Long and Short Positions

Burry's long positions offer further insight into his current strategy. He has increased his stake in Flutter Entertainment and added to holdings in Fiserv, Zoetis, and MercadoLibre. These companies share characteristics such as recurring revenue, manageable capital requirements, and near-term profitability-traits that contrast sharply with the speculative infrastructure build-outs he's shorting.

For investors, Burry's moves highlight the importance of looking beyond headline growth and considering the long-term obligations that can accumulate during periods of rapid expansion. As the AI and cloud infrastructure race continues, the risk of overextension may become more pronounced, especially if demand projections prove overly optimistic.

While Burry's bearish stance on AI infrastructure is notable, it's not the only warning about hidden risks in the sector. As a recent analysis of BlackRock's $12 billion Meta data center financing shows, off-balance-sheet debt and long-term commitments are reshaping how Wall Street approaches risk in the AI era.

For the fourth quarter of fiscal 2026, Oracle reported $19.2 billion in total revenue and $5.8 billion in cloud infrastructure revenue, while Nebius posted $399 million in revenue for the first quarter of 2026. Both companies have made multi-billion-dollar capital commitments to support future growth, underscoring the scale of investment-and risk-now embedded in the AI infrastructure sector.

Off-balance-sheet liabilities are financial obligations that do not appear directly on a company's balance sheet but can have a significant impact on future cash flow and risk exposure. In the technology and cloud sector, these often include long-term leases, service contracts, and purchase commitments for hardware or capacity. While such arrangements can help companies scale quickly, they also create fixed costs that may become burdensome if market conditions change. Investors evaluating companies in fast-growing sectors should pay close attention to these hidden liabilities, as they can affect both profitability and financial flexibility in ways not always visible in standard financial statements.