Seoul stocks down over 5 pct late Fri. morning on tech losses amid AI concerns

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SEOUL, Oct. 30 (Yonhap) -- South Korean stocks sank more than 5 percent late Friday morning, led by heavy losses in technology shares amid renewed concerns over the sustainability of the artificial intelligence (AI) boom.

After opening 2.99 percent lower, the benchmark Korea Composite Stock Price Index (KOSPI) extended its losses, falling 311.84 points, or 5.25 percent, to 5,626.02 as of 11:20 a.m.

The sell-off followed overnight losses on Wall Street, where concerns over lofty AI-related valuations dampened investor sentiment.

As the market extended its decline, the Korea Exchange triggered a sell-side sidecar to suspend program trading for the KOSPI-listed shares for five minutes shortly after 10 a.m. The measure was activated for the first time in 11 trading days.

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

Financial data is shown on a screen in the dealing room of Hana Bank in central Seoul after the market opened on Oct. 30, 2026. (Yonhap)

KOSPI heavyweights traded lower.

Top market cap Samsung Electronics fell 6.03 percent, and chip giant SK hynix plunged 8.65 percent.

Leading automaker Hyundai Motor slipped 3.76 percent after lowering its annual sales target and investment plans amid a challenging business environment.

Defense firm Hanwha Aerospace slumped 12.24 percent after reporting weaker-than-expected third-quarter earnings due to delays in deliveries of K9 self-propelled howitzers to Poland.

The Korean won was trading at 1,337.8 won against the U.S. dollar as of 10:20 a.m., up 1.7 won from the previous session's close.

ejkim@yna.co.kr (END)

Seoul stocks down over 5 pct late Fri. morning on tech losses amid AI concerns

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首尔，10月30日（韩联社）——由于对人工智能（AI）繁荣的可持续性再次产生担忧，韩国股市周五上午晚些时候下跌超过5%，科技股领跌。

韩国综合股价指数（KOSPI）开盘下跌2.99%后，跌幅扩大，截至上午11:20，下跌311.84点，跌幅5.25%，至5626.02点。

抛售潮是在华尔街隔夜下跌之后出现的，华尔街对人工智能相关估值过高的担忧打击了投资者情绪。

随着市场持续下跌，韩国交易所于上午 10 点刚过不久启动卖方侧车机制，暂停 KOSPI 上市股票的程序化交易 5 分钟。该措施是 11 个交易日以来首次启用。

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。

2026年10月30日股市开盘后，首尔市中心韩亚银行交易室内的屏幕上显示着金融数据。（韩联社）

KOSPI指数成分股下跌。

市值最高的三星电子下跌 6.03%，芯片巨头 SK 海力士暴跌 8.65%。

在充满挑战的商业环境下，领先的汽车制造商现代汽车下调了年度销售目标和投资计划，导致其股价下跌 3.76%。

由于向波兰交付 K9 自行榴弹炮的订单延迟，国防公司韩华航空航天公布的第三季度盈利低于预期，导致其股价暴跌 12.24%。

截至上午 10:20，韩元兑美元汇率为 1,337.8 韩元，较前一交易日收盘价上涨 1.7 韩元。

ejkim@yna.co.kr (完)

周五早盘晚些时候，受人工智能担忧和科技股下跌的影响，首尔股市下跌超过5%。