On the 25th, as the KOSPI jumped 5% on strong earnings from U.S. memory corporations Micron, a buy-sidecar was triggered.

An opening market board is displayed on the dealing room ticker at Hana Bank's headquarters in Jung-gu, Seoul, on the 25th./Courtesy of News1.

The Korea Exchange (KRX) said it triggered a buy-sidecar on the stock market at 9:07 a.m.

A stock market sidecar is a system that restricts program trading quotes for five minutes if the KOSPI 200 futures price rises or falls 5% or more from the previous close for one minute.

At the time the sidecar was triggered, the KOSPI 200 futures index was trading at 1,455.56 points, up 5.81% from the previous trading day. Program trading volume at the time was 404.8 billion won.

So far this year, buy-sidecars on the stock market have been triggered 28 times. That exceeds the 26 times seen in 2008 during the global financial crisis.

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