A sharp tech selloff exposed concentration risks in Asian markets, where chip giants such as TSMC, Samsung and SK Hynix dominate benchmarks. As their rapid gains pushed portfolio weights beyond risk limits, active fund managers were forced to sell despite strong fundamentals. The unwind triggered market volatility, accelerated fund outflows and intensified the shift from active to passive investing.

The first crack? KOSPI just got slammed, SK Hynix is down nearly 10%, and one of the market's most crowded trades is facing its biggest test in months.

South Korean stocks are seeing a shift from optimism to caution as investors trim positions and add protection. While chip giants Samsung Electronics and SK Hynix powered a…

Asian markets experienced a sharp downturn as the AI rally cooled, with South Korea's KOSPI halting trading after a significant drop. Investors are now weighing the impact of…