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KOSPI Slips Below 6,800 Amid Rising Oil Prices and Treasury Yields

Electronic Technology · Semiconductors · yonhap_finance · 2026-09-11

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South Korean markets face a downturn as surging oil prices and high US Treasury yields trigger a sell-off in technology stocks, dragging down major indices.

What Happened

Market Decline: The KOSPI index has retreated below the 6,800 level, pressured by negative sentiment from US markets and concerns over high interest rates and oil prices. Sustained selling by foreign and institutional investors continues to weigh on the index.

External Pressures: With the US 10-year Treasury yield exceeding 4.95% and WTI crude oil prices surpassing $100, global markets are experiencing significant volatility. These macroeconomic headwinds have directly impacted the South Korean equity market.

Tech Sector Sell-off: Technology stocks, particularly in the semiconductor sector, are leading the decline due to their high sensitivity to interest rate fluctuations. Major market caps like Samsung Electronics and SK Hynix are seeing significant losses.

Outlook: Analysts suggest that market volatility will likely persist until there is stabilization in oil prices and bond yields. Investors are advised to maintain a cautious stance while monitoring upcoming economic data and Federal Reserve policy signals.

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The KOSPI index fell over 2% to the 6,800 level as surging oil prices and rising U.S. Treasury yields weighed heavily on investor sentiment.

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