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KOSPI plunges over 8% in early trade, circuit breaker triggered

On Nov. 6, the KOSPI plunged more than 8% in early trade, prompting authorities to activate a circuit breaker, with trading halted at 9:03 a.m. for 20 minutes (KBS World). The index closed barely above 5,000, shedding 324 points, a drop of over 6% (KBS World). The plunge was driven by fears that the AI investment cycle may be nearing its peak, triggering panic selling in semiconductor stocks, including Samsung Electronics (Korea Times). The sell-off followed a historic plunge on Nov. 5, when the KOSPI fell below 5,400 on concerns over AI and big tech regulations, the so-called 'Blue Wave shock' (Business Korea). Korean media describe the market as in 'extreme panic,' battered by a cold wave from mega-cap tech stocks originating in the New York stock market (Business Korea).

  1. KOSPI Plunges over 8% in Morning Trade, Triggering Circuit Breaker and Sidecar KBS World · 2026-11-06
  2. KOSPI Plunges More than 6%, Barely Holds above 5,000 KBS World · 2026-11-06
  3. KOSPI crashes below 5000 AI fears batter chip stocks Korea Times · 2026-11-06
  4. [Closing Market] KOSPI Plunges Below 5,400 on Blue Wave Fears Business Korea · 2026-11-05
  5. [Opening Market] KOSPI Plunges Below 5,000 As Foreign Selling Intensifies Business Korea · 2026-11-06

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