Seoul shares dip over 3 pct on tech sell-off amid AI concerns

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SEOUL, Oct. 30 (Yonhap) -- South Korean shares dropped by more than 3 percent Friday, dragged down by a sell-off in semiconductor stocks amid lingering concerns over the sustainability of artificial intelligence (AI) investments. The Korean won strengthened against the U.S. dollar.

The benchmark Korea Composite Stock Price Index (KOSPI) lost 206.92 points, or 3.48 percent, to close at 5,730.74, after falling as low as 5,599.42.

After opening nearly 3 percent lower, the KOSPI extended its losses, prompting the Korea Exchange to activate a sell-side sidecar.

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

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

Google parent Alphabet plunged more than 12 percent after its third-quarter revenue rose 25 percent on-year to $127.58 billion, lower than market expectations, raising concerns over returns on massive AI investments.

The tech-heavy Nasdaq Composite Index shed 1.38 percent, while the Philadelphia Semiconductor Index fell 1.4 percent, weighing on sentiment toward South Korean chipmakers.

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)

ejkim@yna.co.kr (END)

Seoul shares dip over 3 pct on tech sell-off amid AI concerns

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首尔，10月30日（韩联社）——受半导体股票抛售拖累，韩国股市周五下跌逾3%，原因是市场对人工智能（AI）投资的可持续性仍存担忧。韩元兑美元汇率走强。

韩国综合股价指数（KOSPI）下跌206.92点，跌幅3.48%，收于5730.74点，盘中一度跌至5599.42点。

韩国综合股价指数（KOSPI）开盘下跌近3%后，跌势扩大，促使韩国交易所启动卖方侧挂交易。

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。

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。

谷歌母公司Alphabet股价暴跌超过12%，此前该公司第三季度营收同比增长25%至1275.8亿美元，低于市场预期，引发了人们对大规模人工智能投资回报的担忧。

科技股为主的纳斯达克综合指数下跌 1.38%，费城半导体指数下跌 1.4%，这打击了市场对韩国芯片制造商的信心。

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）

ejkim@yna.co.kr (完)

受人工智能担忧引发的科技股抛售潮影响，首尔股市下跌逾3%。