Michael Burry Warns: Cut Parabolic Stock Positions Now

Famed short-seller and Scion Asset Management founder Michael Burry issued a stark market warning on Monday, May 11, 2026, telling investors they should reduce positions in sharply rising stocks to near zero and resist the pull of greed as artificial intelligence excitement and momentum-driven trading continue to inflate equity valuations across multiple sectors.

Burry's message was direct: "For any stocks going parabolic reduce positions almost entirely." The warning arrives as AI-related equities have surged dramatically in 2025 and into 2026, with major technology benchmarks posting double-digit percentage gains driven in large part by investor enthusiasm over generative AI applications, data center infrastructure buildouts, and semiconductor demand. The Nasdaq Composite has outpaced broader indexes over the trailing twelve months, and several individual AI-linked names have seen valuations stretch well beyond historical norms relative to earnings.

The investor framed the current environment as one dominated by greed rather than fundamental analysis. He urged market participants to "reject greed," a phrase that echoes Warren Buffett's well-known maxim about being fearful when others are greedy. Burry rose to global prominence after correctly anticipating the 2007–2008 U.S. housing market collapse and profiting through credit default swaps, a trade immortalized in Michael Lewis's book and subsequent film "The Big Short."

Burry's caution reflects broader concerns that momentum-driven strategies, which buy assets precisely because they are rising, can compress the margin of safety for long-term investors. When valuations disconnect from underlying cash flows and earnings growth, the eventual mean reversion can be swift and severe, as demonstrated during the dot-com correction of 2000–2002 and the growth stock selloff of 2022, when the Nasdaq fell more than 33% in a single calendar year.

The warning also aligns with observations from several institutional strategists who have flagged elevated price-to-earnings multiples in AI-adjacent sectors. Some high-profile technology names are trading at forward P/E ratios exceeding 40x to 60x, levels that leave little room for earnings disappointments or interest rate surprises.

Based on my analysis, Burry's message is consistent with a disciplined value-investing framework that prioritizes downside protection over chasing returns. When a stock moves parabolic — meaning it accelerates sharply upward over a short period with little consolidation — the risk-reward ratio deteriorates significantly. Historically, parabolic price moves in individual equities have reverted to trend in the majority of cases within six to eighteen months. Burry is not predicting an imminent crash in any specific name, but he is flagging that the asymmetry of risk is unfavorable for investors entering or holding large positions at these elevated levels.

For investors watching this development, the actionable implications are clear. First, review your portfolio's exposure to stocks that have risen 50% or more over the past twelve months, particularly in AI, semiconductors, and data infrastructure. Second, consider scaling back those positions systematically rather than all at once, using a tiered exit strategy to manage timing risk. Third, assess whether your current allocation reflects genuine conviction based on fundamentals or whether it has grown passively due to price appreciation. Finally, ensure you hold adequate cash or defensive positions to capitalize on potential dislocations if momentum reverses.

Burry's track record gives his warnings credibility, but investors should note that even well-timed caution can be early — markets driven by momentum can extend far longer than fundamentals would suggest.

Not financial advice. Always conduct your own due diligence before making any investment decisions.