KOSDAQ Drops 8% Intraday Triggering Circuit Breaker Amid AI Stock Revaluation

KOSDAQ fell over 8%, activating Level 1 circuit breaker. Samsung and SK Hynix declines drive sell-off, highlighting structural risks in Korea's AI-heavy market.

Woofun AI notes that the KOSDAQ index declined more than 8% intraday, triggering a Level 1 circuit breaker after sustaining the drop for one minute. This follows similar activations on July 28, when the KOSPI fell 10.84% and KOSDAQ dropped 7.72%, indicating the mechanism's limited efficacy in halting selling pressure.

The market downturn stems from a revaluation of AI semiconductor stocks and structural concentration risks. Samsung Electronics and SK Hynix comprise over 40% of the KOSPI market capitalization. Samsung Electronics shares decreased by 5.45%, while SK Hynix fell by 9.81%.