KOSPI jumps 8.4% on Samsung strike suspension, Nvidia results

SK Hynix and LG Electronics push Korean stocks toward virtuous-cycle territory

Samsung's union suspended its planned strike after reaching a last-minute deal with management late on May 20. © AP

SEOUL -- South Korea's stock market soared on Thursday, its benchmark KOSPI index gaining more than 8% thanks to the resolution of a labor dispute at Samsung Electronics and Nvidia's stellar performance announced overnight in the U.S.