SK Hynix is trading 7.05% down at KRW 1,319,000 on October 15, with sector pressure from competition concerns the clearest explanation. - The decline extends a multi-session selloff as investors weigh China’s CXMT progress on denser DRAM and plans for a server-memory product by year-end. - A separate report said some HBM4 equipment orders may be delayed into next year, adding company-specific uncertainty; timing and cause are unconfirmed. - Available evidence does not establish that either development alone caused the session’s move.