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KOSPI Plunges Over 8%, Circuit Breaker Triggered

On Friday, Nov. 6, the KOSPI plunged more than 8% in early trade, prompting the Korea Exchange to activate a circuit breaker and halt trading at 9:03 a.m., according to KBS World. Yonhap reported the circuit breaker and a sell-side sidecar were activated on sharp declines, and Korea Times noted trading was suspended for 20 minutes amid an extended tech sell-off. The plunge follows Thursday's historic drop, when the KOSPI closed below 5,400 on fears of tighter U.S. AI and tech regulations after a Democratic sweep, as Business Korea and Korea Times reported.

  1. KOSPI Plunges over 8% in Morning Trade, Triggering Circuit Breaker and Sidecar KBS World · 2026-11-06
  2. (URGENT) KRX issues circuit breaker for KOSPI on sharp fall Yonhap · 2026-11-06
  3. [Closing Market] KOSPI Plunges Below 5,400 on Blue Wave Fears Business Korea · 2026-11-05
  4. Trading of KOSPI stocks suspended amid tech sell-off Korea Times · 2026-11-06
  5. KOSPI tumbles as Democrat sweep fuels AI infrastructure concerns Korea Times · 2026-11-05
  6. [속보] 코스피, 8%대 급락 출발…코스닥 5~6%대↓ 매일경제 · 2026-11-06
  7. [속보] 코스피 장중 8%대 폭락…5000선 붕괴 한국경제 · 2026-11-06

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