World’s hottest stock market suddenly blows cold with a 7% tumble

Foreign investors have sold more than $7 billion in Korean shares in the last two trading sessions. - Getty Images/iStockphoto Closed Monday for a national holiday and briefly insulated from heavy selling elsewhere, the South Korean stock market reopened Tuesday to heavy losses. The Kospi Composite KR:180721, the world’s best-performing equity index of 2026, succumbed to heavy profit taking with a 7% correction, forcing market regulators to implement a short-term suspension of program trading at one poin ...