South Korea's benchmark Kospi extended its sharp decline on Thursday as a global technology selloff dragged heavyweight chipmakers Samsung Electronics and SK Hynix lower. The slump has intensified losses for retail investors and raised concerns over market concentration, while policymakers and analysts assess the outlook for the country's equity market.

South Korea's Kospi plunged more than 5% on Monday after surging a record 18% in the previous session, as renewed selling in heavyweight chipmakers and leveraged ETF-related…

South Korea's benchmark Kospi extended its sharp decline on Thursday as a global technology selloff dragged heavyweight chipmakers Samsung Electronics and SK Hynix lower. The…