Michael Burry has increased his short position against Micron Technology, raising questions about the sustainability of AI-driven semiconductor demand even as the company posts record results and sector momentum remains high
Michael Burry, the investor known for his contrarian market calls, has increased his short position against Micron Technology, signaling growing skepticism about the durability of the semiconductor rally fueled by artificial intelligence spending. On July 24, Burry disclosed via his Substack that he added to his bearish bet on Micron (MU), selling short more shares at $933.86. That same day, Micron closed at $920.95, down nearly 7% from the previous session, according to Yahoo Finance. Burry also expanded his short positions in Nvidia and Caterpillar, while maintaining sector-wide bets against Tesla, Palantir, and the iShares Semiconductor ETF (SOXX), suggesting a broader negative outlook on the chip sector rather than a single-stock call.
Burry's thesis goes beyond traditional valuation concerns. He argues that much of the current demand for semiconductors, especially those tied to AI infrastructure, is being driven by what he describes as a "circular demand" mechanism. In his view, hyperscale cloud providers and other large buyers are committing to massive infrastructure investments, which in turn generate revenue projections that justify even more spending. Burry contends that this cycle is being financed off-balance sheet and not fully disclosed, referencing the 2026 Bank for International Settlements annual report as evidence. The risk, he suggests, is that true end-user demand may not materialize at the scale markets are pricing in, potentially leaving the sector exposed if the cycle breaks.
Micron's recent financial performance has been extraordinary by any historical measure. For its fiscal third quarter ended June 24, 2026, the company reported revenue of $41.46 billion, up from $9.30 billion a year earlier. Net income reached $28.24 billion, or $24.67 per diluted share, and operating cash flow surged to $25.39 billion. Micron ended the quarter with $30.2 billion in cash and equivalents. Looking ahead, the company has guided for $50 billion in revenue for the fourth quarter, with gross margins of 86% and non-GAAP earnings per share of $31.00. High-bandwidth memory (HBM4) shipments are ramping up for key AI customers, and development of HBM4E is underway for 2027 production.
Despite these results, Burry's skepticism is rooted in the possibility that the current boom is self-reinforcing but ultimately unsustainable. If the anticipated end-user demand for AI-powered services and applications fails to keep pace with infrastructure investment, the sector could face a sharp correction. This view stands in contrast to the bullish sentiment that has propelled Micron to a 222% year-to-date gain, making it the third-best performer in the S&P 500 behind SanDisk and Dell, according to Slickcharts. The debate over whether the semiconductor cycle is peaking or just beginning remains unresolved, with both sides citing strong evidence.
Technical Signals and Market Levels
From a technical perspective, Micron's stock has shown signs of weakness since reaching all-time highs on the day of its Q3 earnings release. The price broke below key support levels at $1,020 and $980, which have now turned into resistance. Moving averages are trending bearish, and the stock has retreated toward the $810 to $860 range-a zone that has historically provided support. If Micron closes below $800 with sustained selling, the next significant support could be near $700, representing a potential 44% decline from its recent peak. Burry's latest short appears to have been timed around the rejection of the previous support zone, aligning his bearish thesis with deteriorating technical momentum.
For investors tracking the broader chip sector, Burry's sector-wide short positions highlight the risk of extrapolating recent gains too far into the future. While Micron's fundamentals remain robust, the technical setup suggests caution may be warranted until the stock finds a stable support level. The interplay between record earnings and structural demand concerns is likely to keep volatility elevated in the coming months.
Sector skepticism is not unique to Burry. As the market digests the implications of AI-driven growth, some analysts are questioning whether the current pace of infrastructure investment is sustainable. For a look at how other high-profile tech stocks are navigating similar pressures, see this analysis of Nvidia's recent market moves and Citi's outlook: Nvidia's $1 trillion market value drop and Citi's bullish stance.
Micron's story is emblematic of the broader debate over how much of the semiconductor sector's growth is being driven by genuine end-user demand versus speculative infrastructure buildout. Investors should weigh both the company's record-setting financials and the possibility that the current cycle could reverse if demand projections prove overly optimistic.
Understanding the mechanics of "circular demand" is crucial for anyone evaluating the sustainability of the current semiconductor rally. In this context, circular demand refers to a feedback loop where infrastructure spending by large tech companies creates revenue expectations that justify further investment, even if ultimate consumer demand is uncertain. This dynamic can drive rapid growth in the short term but may leave companies vulnerable if the cycle unwinds. For investors, distinguishing between real end-market adoption and self-reinforcing capital expenditure is key to assessing long-term risk and opportunity in the sector.
