South Korean Markets Plunge, KOSDAQ Halts Trading Amid Global Tech Sell-Off

South Korea's stock markets plunged on Tuesday, with the KOSDAQ index experiencing a significant sell-off that triggered a "sidecar" trading halt. The Korea Exchange activated the sell-sidecar mechanism for the KOSDAQ market around 12:47 PM due to sharp fluctuations in futures prices and the main index. At the time of activation, the KOSDAQ150 Futures price had fallen 6.05% to 1584.40, while the KOSDAQ150 index itself dropped 5.91% to 1575.37.

Earlier in the day, the KOSPI index also saw a steep decline, falling over 6% and prompting a similar program sell-order halt. The KOSPI200 Futures had dropped 6.05% to 1255.94 when its sidecar was triggered at approximately 9:07 AM. The sidecar mechanism is designed to temporarily suspend program sell orders when futures prices fall by a certain percentage, aiming to prevent excessive market volatility.

Market analysts attribute the widespread decline to a significant sell-off in global technology stocks overnight, particularly impacting memory semiconductor manufacturers. Companies like Micron Technology saw their shares plummet by 10.57%, and SanDisk experienced a drop exceeding 10%. This global trend appears to have directly influenced investor sentiment and trading activity in the South Korean market, leading to the broad-based downturn.