Bank of Korea: Samsung Electronics and SK Hynix contributed 99% of the KOSPI's surge to 9,000 points

In its recently released "Monetary Credit Policy Report for September 2026," the Bank of Korea reviewed the reasons behind fluctuations in this year’s Korea Composite Stock Price Index (KOSPI). The report indicates that as KOSPI has continued to rise, the contribution rate of Samsung Electronics and SK Hynix to the index’s increase has rapidly grown. In particular, during KOSPI’s surge from 8,000 to 9,000 points in June this year, these two stocks accounted for as much as 99% of the index’s increase.