South Korea Stocks Plunge 4% as Tech Sell-Off Ripples Across Asia

Bearish (-0.7)Impact: High

Published on June 5, 2026 (3 hours ago) · By Vibe Trader

South Korea's stock market experienced a sharp decline on Friday, with the Kospi index dropping 4.11%, leading losses across Asian markets [1]. The sell-off was particularly pronounced among technology heavyweights, as Samsung and SK Hynix shares fell 6% and 8%, respectively [1]. The small-cap Kosdaq index also declined by 2.41% [1]. Other regional markets were affected as well, with Japan's Nikkei 225 losing 1.1% and Australia's S&P/ASX 200 down 0.2% [1]. Hong Kong's Hang Seng index futures traded at 25,158, lower than the previous close of 25,253.40 [1].

The downturn in Asian tech stocks followed a significant slump in Wall Street's AI-linked names overnight. In the U.S., the Dow Jones Industrial Average bucked the trend by rallying 1.73% to a record 51,561.93, while the Nasdaq Composite underperformed, slipping 0.09% to 26,830.96, and the S&P 500 rose 0.41% to 7,584.31 [1]. The rotation out of technology stocks was triggered by a sell-off in Broadcom, which fell more than 12% after missing fiscal second-quarter revenue estimates [1]. This led investors to reduce exposure to AI-related stocks, causing the VanEck Semiconductor ETF (SMH) to lose over 1% [1]. Other chipmakers such as Arm Holdings and Micron Technology also saw declines of more than 4% and nearly 8%, respectively [1].

Market sentiment was further pressured by ongoing tensions in the Middle East and uncertainty surrounding negotiations to end the conflict, which have contributed to volatility in global markets and driven up oil and gasoline prices [1].

No forward-looking statements or analyst opinions were provided in the article [1].

CONCLUSION

The sharp decline in South Korea's stock market, led by tech heavyweights, reflects the global impact of the recent sell-off in AI-linked stocks on Wall Street. Ongoing geopolitical tensions and sector rotation away from technology continue to weigh on market sentiment and increase volatility.

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