Key facts
- Seoul stocks closed sharply down on Friday, August 28, 2026, ending a three-day winning streak.
- The benchmark KOSPI index fell 1.79% to 6,788.88.
- Investors sold off tech heavyweights due to external uncertainties, including potential U.S. semiconductor tariffs.
- The Korean won rose against the U.S. dollar.
- Market sentiment was cautious ahead of Federal Reserve Chair Kevin Warsh's speech at the Jackson Hole meeting.
Seoul stocks closed sharply lower on Friday, August 28, 2026, snapping a three-day winning streak as investors divested from technology stocks amid prevailing external uncertainties. The benchmark Korea Composite Stock Price Index (KOSPI) finished down 123.49 points, or 1.79 percent, at 6,788.88.