Bank of Korea attributes 99% of KOSPI gains to Samsung Electronics and SK Hynix

According to the Bank of Korea's September 2026 Monetary and Credit Policy Report, Samsung Electronics and SK Hynix were responsible for 99% of the KOSPI index's growth during its rally from 8,000 to 9,000 points in June. The report analyzed the volatility of the Korean stock market throughout the year, highlighting the heavy concentration of index gains in these two major companies.