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Sudden US AI fund sell-off serves as wake-up call for Chinese tech traders - South China Morning Post

Reported by Scmp
Jul 31, 2026· 3 min read
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Key Takeaways
  • • Situational Awareness, an AI-focused hedge fund founded in 2024, collapsed after a 67% portfolio decline in July alone, forced to liquidate billions in technology shares at steep discounts to Citadel due to margin calls from lenders.
  • • The fund's implosion—driven by overleveraged positions in AI supply-chain stocks including SK Hynix (down >10%), SanDisk (down >30%), and Nebius Group (down >30%)—has prompted warnings from Chinese market veterans against using leverage and chasing momentum-driven trades.
  • • A broader tech and semiconductor selloff wiped over $1 trillion from chip stocks' market capitalizations, with Asian markets and Chinese quant hedge funds experiencing significant spillover losses as the volatility spread globally.
  • • Market analysts attribute the selloff partly to disappointing earnings guidance from major US tech firms, scrutiny over AI spending profitability, and potential new regulatory measures, compounded by breakthroughs in Chinese AI models that raised questions about US tech dominance.
  • • The Situational Awareness collapse serves as a cautionary lesson for retail and institutional investors globally about the dangers of leveraged positions in concentrated, volatile sectors during periods of rapid valuation compression.
Summary
Situational Awareness, a high-profile AI-focused hedge fund launched in 2024, experienced a catastrophic collapse in late July 2026 after unable to meet collateral demands from lenders. The fund, which had built a heavily leveraged portfolio betting on AI supply-chain stocks—including memory-chip maker SK Hynix and cloud-computing provider Nebius Group—saw its portfolio value plummet 67% in July alone, according to a letter from the firm to investors reported by The Wall Street Journal. Forced to liquidate billions of dollars in technology shares at significant losses, the fund offloaded its positions to Citadel on Thursday, crystallizing substantial write-downs.

The fund's implosion carries particular significance for Chinese tech investors and traders. Shanghai-based market analysts quoted by the South China Morning Post emphasized the perils of excessive leverage in volatile sectors. Harry Shen, a Shanghai public-markets analyst, repeatedly stressed the dangers of leverage-fueled trading strategies, while Michael Zhang, a mainland Chinese stock market veteran, warned against "trading with borrowed money" and "blindly chasing hot topics." Zhang's observation that "by the time you get in, it might be exactly when others are heading for the exit" crystallizes the timing risk that Situational Awareness exemplified.

The collapse occurred against a backdrop of severe technology sector volatility. SK Hynix, which listed on Nasdaq on July 10, has fallen more than 10%, while SanDisk and Nebius have slumped over 30% in the past month. The broader semiconductor and AI stock selloff has been attributed to multiple factors: disappointing earnings guidance from major US technology firms, intensifying scrutiny of whether AI capital expenditures justify their costs, and potential new regulatory measures in Europe and Asia. Chinese breakthroughs in AI model development, including advances from startup Moonshot AI, further intensified the selloff by raising questions about US technological leadership and the durability of AI-related valuations.

The contagion extended to Asia's domestic markets, with Chinese quantitative hedge funds experiencing significant losses as the selloff spilled over from US equities. The overall destruction of shareholder value was substantial: chip stocks collectively saw over $1 trillion wiped from their market capitalizations since Friday's close. Wells Fargo characterized the technology-driven selloff as a "wake-up call" for investors, highlighting structural risks in concentrated positions and the amplified losses that leverage creates during rapid valuation compression. For institutional and alternative investment managers, the Situational Awareness collapse underscores the systemic dangers of overleveraged positions in momentum-driven sectors during periods of elevated volatility and shifting competitive dynamics.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Scmp Sudden US AI fund sell-off serves as wake-up call for Chinese tech traders - South China Morning Post