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KOSPI Index Falls 12% in Record One-Day Drop on South Korea’s Stock Market

KOSPI Index Falls 12% in Record One-Day Drop on South Korea’s Stock Market

South Korea’s benchmark KOSPI index suffered its largest single-day decline in history, closing 12% lower amid heightened market volatility.

Fact Check
The claim is accurately supported by real-time reporting from major financial news organizations including Reuters and Yahoo Finance. On March 4, 2026, the KOSPI index indeed closed 12% lower, which was widely documented as the largest single-day percentage decline in the history of the South Korean stock market. The drop was part of a broader market panic caused by the outbreak of war involving Iran.
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Terms & Concepts
  • KOSPI Index: The Korea Composite Stock Price Index, a key benchmark tracking all common stocks traded on the Korea Exchange.
  • Stock Market Index: A statistical measure that reflects the composite value of selected stocks, representing a specific market or industry.