Korea Stock Market (KRX) Today (August 12): Why Is the Korean Stock Market Up Today? Korea Stock Market (KRX) Today (August 12): Samsung ElectronicsSamsung Electronics emerged as one of the biggest drivers of the KOSPI’s advance. Korea Stock Market (KRX) Today (August 12): SK HynixSK hynix also played a central role in Wednesday’s recovery. Korea Stock Market (KRX) Today (August 12): Top GainersSeveral smaller stocks across the KRX and KOSDAQ recorded exceptionally large percentage gains during the session. Korea Stock Market (KRX) Today (August 12): Top LosersDespite the powerful KOSPI rally, several companies recorded steep losses.