(LEAD) Seoul shares open sharply lower after rebound amid AI concerns

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SEOUL, Oct. 20 (Yonhap) -- South Korean shares opened sharply lower Tuesday, weighed down by losses in major tech heavyweights as investors attempted to cash in recent gains amid woes over investments in the artificial intelligence (AI) value chain.

After opening 0.6 percent lower, the benchmark Korea Composite Stock Price Index (KOSPI) fell 130.58 points, or 2.26 percent, to 5,637.43 as of 9:15 a.m., bucking overnight gains on Wall Street.

The index has risen for two consecutive sessions after a sharp dip amid woes over AI-related sectors. It plunged a combined 20.7 percent over seven trading sessions from Oct. 6 to Thursday.

Overnight, U.S. stocks ended mixed as technology shares rebounded from their steepest weekly drop since June.

The Dow Jones Industrial Average edged down 0.07 percent, while the benchmark S&P 500 rose 0.41 percent and the tech-heavy Nasdaq Composite Index gained 1.11 percent to finish at 26,430.89.

In Seoul, tech stocks led the decline.

Market bellwether Samsung Electronics gave up 1.38 percent and its chipmaking rival SK hynix declined 4.07 percent.

Samsung Electro-Mechanics, an electronics component affiliate of Samsung Electronics, shed 2.22 percent.

The Korean won was trading at 1,326.2 won against the U.S. dollar at 9:15 a.m., up 6.9 won from the close of the previous stock trading session.

Financial data is shown on a screen inside the dealing room of Hana Bank in central Seoul on Oct. 19, 2026, after the market close. (Yonhap)

(LEAD) Seoul shares open sharply lower after rebound amid AI concerns

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首尔，10 月 20 日（韩联社）——周二，韩国股市开盘大幅走低，主要科技巨头股价下跌拖累大盘，投资者试图在人工智能（AI）价值链投资受挫的情况下兑现近期的涨幅。

韩国综合股价指数（KOSPI）开盘下跌0.6%，截至上午9点15分，下跌130.58点，跌幅2.26%，至5637.43点，与隔夜华尔街的涨势背道而驰。

受人工智能相关板块疲软的影响，该指数在经历大幅下跌后，已连续两个交易日上涨。从10月6日至周四，该指数在七个交易日内累计下跌了20.7%。

隔夜，美国股市涨跌互现，科技股从6月以来最大单周跌幅中反弹。

道琼斯工业平均指数小幅下跌 0.07%，而基准标准普尔 500 指数上涨 0.41%，以科技股为主的纳斯达克综合指数上涨 1.11%，收于 26,430.89 点。

在首尔，科技股领跌。

市场风向标三星电子股价下跌 1.38%，其芯片制造竞争对手 SK 海力士股价下跌 4.07%。

三星电子旗下电子元件子公司三星电机股价下跌 2.22%。

韩元兑美元汇率在上午 9 点 15 分报 1326.2 韩元，比前一交易日收盘价上涨 6.9 韩元。

2026年10月19日股市收盘后，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）

（导语）首尔股市在反弹后开盘大幅走低，人工智能担忧情绪升温