SK Hynix Stock, Samsung Surge as Memory Frenzy Drives KOSPI Rebound

It followed a brutal tech rout in the previous session, which mimicked the chip-stocks selloff in U.S. markets where the tech-heavy finished 0.8% lower to end a holiday-shortened week. Trading was halted on the KOSPI Thursday as the slump triggered a sell-side regulatory halt, or “circuit breaker,” very early in the morning session for 15 minutes. The Seoul market is a hostage to the benchmark index’s two largest constituents—memory-chip titans SK Hynix and Samsung Electronics —and the pair again drove the recovery Friday, surging 10.9%, and 8.2%, respectively.