SK hynix stock after-hours: Seoul shares weigh on KOSPI

SK hynix stock was reported as the heaviest drag on South Korea’s KOSPI during early trading on October 6, 2026, according to Aju Press.

Seoul shares weigh on the index

Aju Press reported that SK hynix fell 1.5 percent to KRW 1,813,000 in Seoul trading. The report said the stock tracked weakness among U.S. memory-chip peers, while Nvidia closed at a record high.

Market context

The report said foreign investors were net sellers of KOSPI shares, while the benchmark was little changed after South Korea reopened following a holiday weekend. SK hynix was identified as the index’s largest drag in the reported session.