▲ Financial data is displayed on a screen at Hana Bank's dealing room in central Seoul on Sept. 23, 2026. (Yonhap)

SEOUL, Sept. 30 (Yonhap) -- Seoul stocks opened higher Wednesday, tracking overnight gains in U.S. semiconductor shares, though elevated U.S. Treasury yields weighed on the investor sentiment.

The benchmark Korea Composite Stock Price Index, or KOSPI, gained 72.66 points, or 1.06 percent, to 6,943.47 at the opening bell.

Overnight, U.S. stocks ended slightly lower despite a decline in oil prices, as persistently high Treasury yields continued to weigh on investor sentiment.

Semiconductor shares, however, bucked the broader weakness. The Philadelphia Semiconductor Index rose 1.32 percent, providing a positive cue for South Korean chip giants Samsung Electronics and SK hynix.

The S&P 500 slipped 0.17 percent, the Dow Jones Industrial Average fell 0.26 percent, and the tech-heavy Nasdaq composite ticked down 0.09 percent.

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