The KOSPI index started higher, surpassing the 8,700 mark for the first time ever on June 1, 2026. The status of the domestic stock market was displayed on the electronic board in the dealing room at the headquarters of Hana Bank in Jung-gu, Seoul. Photo by Jinhyung Kang

The KOSPI index started higher, surpassing the 8,700 mark for the first time ever on June 1, 2026. The status of the domestic stock market was displayed on the electronic board in the dealing room at the headquarters of Hana Bank in Jung-gu, Seoul. Photo by Jinhyung Kang

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On June 1, the KOSPI surged, triggering a buy-side sidecar (temporary suspension of program buy orders) for the first time in three trading days.


The Korea Exchange announced that at 11:30:32 a.m. on this day, due to volatility in the KOSPI 200 futures index, the effectiveness of program buy orders was suspended for five minutes.


At the time the sidecar was triggered, the KOSPI 200 futures index stood at 1,417.90, up 67.90 points (5.02%) from the previous closing price.


This is the first time the KOSPI buy-side sidecar has been triggered in three trading days since May 27.


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The KOSPI broke through the 8,800-point mark on this day, setting a new all-time high.


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