Key facts
- South Korean stocks opened lower on Tuesday, Sept. 29, 2026.
- The KOSPI fell 45.33 points, or 0.66 percent, to 6,844.11 at the opening bell.
- U.S. stocks retreated overnight as renewed tensions between the U.S. and Iran drove crude oil prices higher.
- Higher energy costs fueled concerns that inflation and interest rates could remain high.
- U.S. Treasury yields extended their climb, with the 10-year yield rising to 5.23 percent and the 30-year yield climbing to 5.55 percent.
- The S&P 500 fell 0.77 percent, the Dow Jones Industrial Average slipped 0.67 percent, and the Nasdaq composite decreased 0.92 percent.
South Korean stocks opened lower on Tuesday, September 29, 2026, tracking losses on Wall Street as rising oil prices fueled inflation concerns and lifted U.S. Treasury yields amid Middle East tensions.
The benchmark Korea Composite Stock Price Index, or KOSPI, fell 45.33 points, or 0.66 percent, to 6,844.11 at the opening bell.
Overnight, U.S. stocks retreated as renewed tensions between the United States and Iran drove crude oil prices higher, fueling concerns that higher energy costs could keep inflation and interest rates high. Treasury yields extended their climb, with the benchmark 10-year yield rising to 5.23 percent and the 30-year yield climbing to 5.55 percent, hovering around multiyear highs. The S&P 500 fell 0.77 percent, the Dow Jones Industrial Average slipped 0.67 percent, and the tech-heavy Nasdaq composite decreased 0.92 percent.