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Kospi Plunges Amid AI Stock Surge

5 Jun

Summary

South Korea's main stock index dropped significantly.
The market experienced one of its worst days of 2026.
AI-related stocks are driving the market's overall gains.

The South Korean stock market, represented by the Kospi Composite index, closed 5.5% lower on a recent trading day. This significant drop constituted the sixth-worst performance observed in 2026. Despite this notable daily decline, the Kospi Composite has demonstrated impressive resilience and growth throughout the year, currently standing 94% higher year-to-date.

This substantial annual gain has been predominantly powered by a concentrated group of artificial intelligence-related stocks. Key players in the semiconductor industry, Samsung Electronics and SK Hynix, are particularly influential, collectively accounting for approximately half of the Kospi's total market value. Their performance significantly impacts the overall market trends.

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