SK hynix shares surged nearly 16% on Tuesday, June 9, 2026. The benchmark KOSPI index closed up 8.18% at 8,096.93. This rally recovered all losses from the previous day's steep sell-off.
Renewed investor confidence in the artificial intelligence sector fueled the market turnaround. Bargain-hunting and a recovery in U.S. technology stocks triggered the rebound.
Samsung Electronics shares rose almost 9% during the session. SK hynix and Samsung served as the primary drivers for the KOSPI's gains. The volatile trading reflects underlying optimism for AI hardware manufacturers despite recent market turbulence.