The KOSPI index suffered a direct blow from heightened geopolitical risks originating in the Middle East, such as concerns over a potential full-scale war between the United States and Iran, leading to a sharp decline of more than 4% at the opening on March 4, 2026. The index is displayed on the status board of the Hana Bank dealing room in Jung-gu, Seoul. The KOSPI index triggered a sell-side circuit breaker for two consecutive days.
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![[Photo] KOSPI Plunges at Opening](https://cphoto.asiae.co.kr/listimglink/1/2026030409302660659_1772584226.jpg)

