Black Monday: KOSPI plunges 8.29% to 7484, Samsung -10%, won 1561, US rebounds
On June 8, KOSPI plunged 8.29% to close at 7,484.41, triggering this year's third circuit breaker. KOSDAQ also fell 9.08%, with Samsung Electronics (-10.18%) and SK Hynix (-7.68%) dragging the index down. The won-dollar rate hit an intraday high of 1,561.5, the highest since 2009, before closing at 1,535.0 on official intervention. The same day, however, US stocks rebounded on hopes of easing Middle East tensions, with the Nasdaq up 1.44%.