stocks-summary

▲ Financial data is displayed on a screen at Hana Bank's dealing room in central Seoul on Sept. 28, 2026. (Yonhap)

SEOUL, Sept. 29 (Yonhap) -- South Korean shares retreated Tuesday as rising oil prices fueled inflation concerns and pushed U.S. Treasury yields higher amid Middle East tensions. The Korean won strengthened against the U.S. dollar.

The benchmark Korea Composite Stock Price Index (KOSPI) lost 18.93 points, or 0.27 percent, to end at 6,870.81, marking its second consecutive session of losses.

The index opened 0.19 percent lower and extended its losses in afternoon trading as foreign and institutional investors sold local shares.

Overnight, U.S. stocks retreated as renewed tensions between Washington and Tehran 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.

Oil prices rose for a second consecutive session Tuesday on lingering concerns over potential supply disruptions in the Middle East stemming from the U.S.-Iran conflict.

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