Samsung Electronics and SK Hynix account for 99%, as Bank of Korea reviews stock market's "epic fluctuation"

TechFlow reports that on September 14, the Bank of Korea reviewed the reasons behind the fluctuations of the Korea Composite Stock Price Index (KOSPI) this year in its recently released "September 2026 Monetary and Credit Policy Report." The report shows that as the KOSPI continued to climb, the contribution rate of Samsung Electronics and SK hynix to the index's gains increased rapidly. Particularly during the KOSPI's surge from 8,000 points to 9,000 points in June this year, the contribution rate of these two stocks to the index's gains reached as high as 99%.(Jin10)