Seoul Composite Extends Gains to 1.6%, Samsung Electronics Rises 3%

A single mega-cap carrying an entire national benchmark is the structural story here, not the headline percentage. Samsung's weighting means KOSPI direction is often a referendum on one company's fortunes rather than a broad read on Korean equities, which matters for anyone treating the index as a proxy for the wider market. Whether the advance broadens beyond that name is the open question.