Nikkei and KOSPI Close Higher, Samsung and SK Hynix Surge

A 5.89% single-day KOSPI move led by memory names is a different animal from a broad index grind, and the scale of the Samsung and SK Hynix gains suggests positioning and flows rather than a routine sentiment shift. The divergence matters too: Korea's tech-heavy index outrunning the Nikkei by such a margin points to a concentrated semiconductor trade, not generalized regional strength. Whether that concentration broadens or reverses is the open question, and it is the memory complex, not the headline index levels, that carries the signal.