Hedge funds have faced one of their most challenging trading periods in nearly a year, as overcrowded artificial intelligence and technology positions unwind amid heightened market volatility.
Quantitative Strategies Lose Traction
Quantitative investment firms experienced the steepest declines, and traditional equity managers also trimmed AI‑linked exposures as investors across global markets became more risk‑averse.
Semiconductor Market Turbulence intensifies
Trading conditions grew more challenging as semiconductor stocks posted sharp fluctuations in late June and early July. Elevated leverage among South Korean investors amplified the market swings.
The downturn was primarily driven by positions in U.S. equities, developed Asian markets, and European equities, all of which saw considerable price volatility.
Quantitative managers accounted for about 10% of the world’s largest hedge funds in 2025, highlighting their expanding influence in financial markets.
Regulators Warn of Financial Stability Risks
The Bank of England, the Bank of Japan, and the Bank for International Settlements have continued to warn that elevated asset valuations and growing hedge‑fund participation could heighten financial market volatility.
AI Exposure Pulls Back Across the Sector
Fundamental hedge funds slipped 2.2% during the same period as previously popular AI investments lost momentum.
Portfolio managers aggressively trimmed AI‑related holdings, pushing hedge‑fund leverage to its lowest level in the past year as firms sought to reduce overall market exposure.


