Korean Stocks Tumble 9% on Chip Selloff, Trigger Trading Halt
South Korean stocks plunged 9% in a second trading halt this week, led by a chipmaker selloff as global AI sentiment soured, raising concerns about tech sector volatility.

South Korean stocks tumbled 9% on Friday, triggering a second trading halt this week as chipmakers led a broad selloff. The Korea Composite Stock Price Index (KOSPI) fell sharply, with semiconductor giants such as Samsung Electronics and SK Hynix among the hardest hit. The move underscores the market's acute sensitivity to shifts in global artificial-intelligence sentiment, which has driven both rallies and routs in tech-heavy indices this year.
The selloff was fueled by renewed concerns over AI demand growth, following cautious commentary from major US tech firms and softer-than-expected earnings guidance from key chip suppliers. South Korea's export-dependent economy is particularly exposed to semiconductor cycles, and the KOSPI's heavy weighting in tech stocks amplifies the impact of sector-specific shocks. For equities traders, the trading halt serves as a circuit breaker, allowing time for order book recalibration and preventing panic-driven cascades. Investors can monitor real-time pricing on NowPrice's stocks page to gauge market depth and recovery patterns.
Looking ahead, traders will watch for any policy response from South Korean authorities, including potential market stabilization measures. Key levels to monitor include the KOSPI's support near 2,400 and resistance at 2,600. Global cues from US semiconductor index futures and AI-related earnings reports will be critical in determining whether this is a short-term correction or the start of a deeper downturn. The Bank of Korea's next policy meeting and export data releases will also provide context on the broader economic impact.