The South Korean composite index rose by 6.8%. The sharp increase in intraday trading triggered a temporary trading halt.

Boosted by the overnight rise in the US tech sector and expectations for domestic market reforms, the South Korean stock market closed up nearly 7% on Tuesday, reaching its highest closing point in history. The Korea Composite Stock Price Index rebounded strongly, completely recovering the losses from the previous trading day. The index closed up 338.41 points, a gain of 6.84%, at 5,288.08 points, setting a new record for highest closing point and recording the largest daily percentage increase since March 24, 2020. During trading, with futures up 5%, the Korea Composite Stock Price Index triggered circuit breakers, leading to a five-minute pause in algorithmic trading. On Monday, the index fell by 5.3%, marking the largest single-day decline since April 7, 2025. Chipmaker Samsung Electronics rose by 11.37% to a historic high, marking its largest single-day increase since October 30, 2008. Competitor SK Hynix also rose by 9.28%. Battery manufacturer LG Energy Solution rose by 2.89%, while Hyundai Motor and its sister company Kia Motors rose by 2.82% and 2.60% respectively. Foreign investors were net buyers of 703.3 billion Korean won worth of stocks.