KRX activates sell-side sidecar for KOSPI on sharp fall

The Korea Exchange (KRX) activated a sell-side sidecar for the KOSPI in South Korea on Friday as the index plunged. Program trading for KOSPI-listed shares was suspended for five minutes at 10:04 a.m. The index fell 277.75 points, or 4.68 percent, to 5,661.7 as of 10:06 a.m. after opening 2.99 percent lower, amid investor concerns about the sustainability of the artificial intelligence boom following overnight Wall Street losses.

The KOSPI 200 Futures Index must fall 5 percent or more for at least one minute to trigger a sell-side sidecar.

Alphabet fell more than 12 percent overnight after its third-quarter revenue missed market expectations.

The KOSPI is the benchmark Korea Composite Stock Price Index.

Published Oct 30, 2026 10:20 am KST

The benchmark KOSPI and Kosdaq indices are displayed at a dealing room of Hana Bank in Seoul, Friday. Yonhap

Korea's bourse operator on Friday activated a sell-side sidecar for the benchmark Korea Composite Stock Price Index (KOSPI) as the stock index plunged.

Program trading for the KOSPI-listed shares was suspended for five minutes at 10:04 a.m., according to the Korea Exchange (KRX).

After opening 2.99 percent lower, the KOSPI fell 277.75 points, or 4.68 percent, to 5,661.7 as of 10:06 a.m.

The index came under downward pressure following overnight losses on Wall Street, as renewed concerns over the sustainability of the artificial intelligence (AI) boom weighed on investor sentiment.

Overnight, Wall Street shares retreated, with Google parent Alphabet plunging more than 12 percent after its third-quarter revenue missed market expectations.

A sell-side sidecar is triggered when the KOSPI 200 Futures Index falls 5 percent or more for at least one minute.

韩国交易所（KRX）周五启动了韩国综合股价指数（KOSPI）的卖方交易程序，此前该指数大幅下跌。KOSPI上市股票的程序化交易于上午10:04暂停5分钟。截至上午10:06，该指数下跌277.75点，跌幅4.68%，至5661.7点，此前该指数开盘下跌2.99%。投资者担忧隔夜华尔街股市下跌后人工智能热潮的可持续性。

KOSPI 200 期货指数必须下跌 5% 或更多，持续至少一分钟，才能触发卖方侧车交易。

Alphabet股价隔夜下跌超过12%，此前该公司公布的第三季度营收不及市场预期。

KOSPI是韩国综合股价指数的基准指数。

发布于2026年10月30日上午10:20（韩国标准时间）

周五，首尔韩亚银行交易室展示了韩国综合股价指数（KOSPI）和韩国创业板指数（Kosdaq）。（韩联社）

周五，韩国股市运营商启动了韩国综合股价指数（KOSPI）的卖方交易平台，此前该指数暴跌。

据韩国交易所（KRX）消息，韩国综合股价指数（KOSPI）上市股票的程序化交易于上午 10:04 暂停 5 分钟。

韩国综合股价指数（KOSPI）开盘下跌2.99%后，截至上午10:06，下跌277.75点，跌幅4.68%，至5661.7点。

受隔夜华尔街股市下跌的影响，该指数面临下行压力，因为人们对人工智能（AI）繁荣的可持续性再次感到担忧，这打击了投资者的信心。

隔夜，华尔街股市回落，谷歌母公司Alphabet股价暴跌超过12%，此前该公司第三季度营收不及市场预期。

当 KOSPI 200 期货指数下跌 5% 或以上且持续至少一分钟时，将触发卖方侧车交易。