Kospi jumps 6% as US-Iran peace deal triggers super surge; index up over 100% YTD

South Korean stocks jumped 6% on Monday as easing geopolitical tensions lifted global risk sentiment after the US and Iran reached an initial agreement to end their nearly four-month conflict and restore shipping through the Strait of Hormuz. The KOSPI is now up more than 100% in 2026, led by chip giants Samsung and SK Hynix, which extended their stellar rally.