South Korea's KOSPI closed Friday up 18%, its largest single-day gain on record, reversing a three-day decline. LSEG data show five of the index's ten biggest single-day rallies have occurred since March, and three of the four largest single-day drops in the past decade occurred in the last five weeks. KB Financial strategist Peter S. Kim said market 'gamification' is producing sharp moves driven more by news and momentum than fundamentals, posing a significant challenge for policymakers. BNP Pa

South Korea's KOSPI closed Friday up 18%, its largest single-day gain on record, reversing a three-day decline. LSEG data show five of the index's ten biggest single-day rallies have occurred since March, and three of the four largest single-day drops in the past decade occurred in the last five weeks. KB Financial strategist Peter S. Kim said market 'gamification' is producing sharp moves driven more by news and momentum than fundamentals, posing a significant challenge for policymakers. BNP Paribas analyst William Bratton said volatility is likely to remain elevated and Korea is central to debates over the sustainability of an AI-driven tech supercycle.