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KOSPI Rebounds to Close Higher as Nuclear Stocks Rally

Electronic Technology · Semiconductors · yonhap_finance · 2026-08-25

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KOSPI reversed early losses to finish 0.68% higher, supported by institutional buying and a surge in nuclear energy stocks despite global semiconductor headwinds.

What Happened

Market Performance: The KOSPI index staged a recovery after a weak opening, eventually closing up 0.68% at 6,742.74. The KOSPI index briefly tested the 6,400 level before institutional and corporate buying pushed it into positive territory, while the KOSPI index also gained 1.70%.

Trading Dynamics: While foreign investors remained net sellers for the third consecutive session, domestic institutions and corporate entities provided significant support. Notably, corporate buying reached record levels, helping stabilize major heavyweights like Samsung Electronics and SK Hynix.

Sector Highlights: Samsung Electronics recovered from a 4% intraday decline to close flat, while SK Hynix finished in positive territory. Nuclear-related stocks, including Doosan Enerbility and KEPCO E&C, surged following reports of potential U.S. investment in the Korean nuclear sector.

Global Context: The market faced pressure from overnight declines in U.S. tech stocks, driven by AI regulatory concerns and semiconductor sector weakness. Despite these headwinds, the Korean market saw a rotation into non-semiconductor sectors, leading to a 'weak start, strong finish' pattern.

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