South Korean Stocks Plunge 5% as Chip Shares Lead Decline

Enna Lee

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South Korean Stocks Plunge 5% as Chip Shares Lead Decline

The KOSPI’s losses widened to 5%, while SK Hynix fell more than 7% and Samsung dropped nearly 6%.

By Enna Lee

Published Oct 12, 2026, 9:14 PM EDT

Semiconductor wafers beside a sharply descending metallic market line / TokenPost.ai

South Korea’s KOSPI index extended its decline to 5%, with sharp losses in major semiconductor shares putting the country’s stock market in focus for crypto and global investors.

SK Hynix fell more than 7%, while Samsung dropped nearly 6%.

Enna Lee

Reporter

Enna Lee reports on investing and digital-asset markets for TokenPost. Send corrections or tips to info@tokenpost.com.