South Korea enters bear market as AI chip fears trigger massive sell-off

South Korea’s benchmark KOSPI index officially entered bear market territory on July 8, crashing as much as 5.7% in a single session and wiping out months of gains fueled by the global AI frenzy. The index has now declined more than 20% from its record high of roughly 9,385 points, set barely three weeks earlier on June 19.

The chip problem at the center of everything

The sell-off wasn’t random. It was surgically concentrated in the two companies that essentially are the South Korean stock market: Samsung Electronics and SK Hynix. Both stocks dropped 6-7% on July 8. Together, these two chipmakers account for nearly half of the KOSPI’s total market capitalization.

The irony is thick. Samsung just reported a 19-fold increase in quarterly profits. In most universes, that would be cause for celebration. In this one, traders looked at those numbers and decided to sell anyway. Investors are increasingly worried that the explosive growth in AI infrastructure spending might be approaching a plateau, or worse, that memory chip production could tip into oversupply territory.

South Korea announced an $880 billion investment plan in chips and AI in late June, essentially betting the country’s economic future on the sector. That kind of commitment makes the KOSPI’s fortunes almost entirely dependent on AI demand trajectories.

What drove the KOSPI this high in the first place

The KOSPI’s run from late 2025 through mid-June 2026 was one of the most aggressive bull markets in the index’s history, fueled by surging global demand for AI technologies and the memory chips that power them. The index more than doubled over a six-month span leading into that peak.

Samsung and SK Hynix were the primary beneficiaries. As hyperscalers like Microsoft, Google, and Amazon poured hundreds of billions into data center infrastructure, Korean chipmakers found themselves sitting on the supply side of the most important technology buildout since the internet.

Why crypto traders should care

South Korea remains one of the world’s most active crypto trading markets, and domestic sentiment shifts can have outsized effects on digital asset volumes. The KOSPI’s prior periods of turmoil have been linked to volatility in Bitcoin and broader crypto markets.

AI tokens and blockchain projects positioned around artificial intelligence infrastructure have attracted significant capital this year. The $880 billion South Korean investment plan in chips and AI represents a massive bet on the sector’s future by a G20 economy, and a broader reassessment of AI’s growth trajectory could pressure these assets specifically, on top of any general risk-off selling.

Traders watching this space should pay close attention to whether the KOSPI stabilizes or continues its descent. A bounce here would suggest profit-taking rather than a fundamental reassessment. A continued decline, particularly if Samsung and SK Hynix keep falling despite strong earnings, would indicate the market losing faith in the AI spending cycle’s durability.

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