The KOSPI rose 10.19 points, or 0.15%, to 7,017.91 on Sept. 22, 2026, after opening 2.20% higher at 7,161.61 and reaching 7,171.44. Semiconductor and technology stocks initially led the advance as the won strengthened and global AI optimism improved risk appetite, but the index retreated as individual and institutional investors sold technology heavyweights. Foreign investors were net sellers in later morning trading, while South Korean semiconductor exports reached a record $34.1 billion during Sept. 1–20.