(LEAD) Seoul shares dip over 5 pct on tech sell-off on renewed AI, inflation woes

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SEOUL, Oct. 13 (Yonhap) -- Seoul shares plunged by more than 5 percent Tuesday, extending their losing streak to a fifth session, as technology stocks tumbled amid renewed woes over the artificial intelligence (AI) sector and inflation.

The Korean won was trading lower against the U.S. dollar.

After opening 3.1 percent lower, the benchmark Korea Composite Stock Price Index (KOSPI) fell 348.89 points, or 5.46 percent, to 6,035.35.

Foreigners sold a net 4.51 trillion won (US$3.35 billion) worth of stocks, while institutions and individuals bought a net 1.69 trillion won and 2.23 trillion won, respectively.

The Korea Exchange (KRX), South Korea's bourse operator, triggered a sell-side sidecar during morning trading after the KOSPI fell more than 5 percent for at least one minute.

Trade volume was moderate at 399.87 million shares worth 26.79 trillion won, with decliners outnumbering advancers 628 to 246.

"Concerns over OpenAI's revenue and the completion of local chipmakers' share buybacks continued to weigh on tech stocks," Han Ji-young, an analyst at Kiwoom Securities, said.

Overnight, U.S. stocks closed mixed, with the Dow Jones Industrial Average rising 0.38 percent and the tech-heavy Nasdaq composite falling 0.44 percent.

Chipmakers faced a deep slump after reports of rapid tech progress by Chinese rival ChangXin Memory Technologies (CXMT).

Investors now await the U.S. consumer price index (CPI) report due Wednesday (U.S. time) for clues on the Federal Reserve's policy outlook ahead of its October rate-setting meeting.

In Seoul, tech stocks led the decline.

Market behemoth Samsung Electronics fell 7.39 percent to 232,000 won, and its chipmaking rival SK hynix plunged 10.09 percent to 1.44 million won.

Defense giant Hanwha Aerospace dropped 2.67 percent to 839,000 won, and top carmaker Hyundai Motor shed 1.56 percent to 315,000 won.

Among gainers, shipping firm HMM rose 1.15 percent to 22,050 won, and state-run utility Korea Electric Power Corp. climbed 2.1 percent to 29,150 won.

The Korean won was quoted at 1,345.1 won against the U.S. dollar as of 3:30 p.m., compared with 1,335.1 won from the previous stock trading session's close.

Financial data is displayed on a screen inside the dealing room of Hana Bank central Seoul on Oct. 13, 2026, after the market close. (Yonhap)

kyongae.choi@yna.co.kr (END)

(LEAD) Seoul shares dip over 5 pct on tech sell-off on renewed AI, inflation woes

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首尔，10月13日（韩联社）——由于人工智能（AI）行业和通货膨胀再次引发担忧，科技股暴跌，首尔股市周二暴跌超过5%，连续第五个交易日下跌。

韩元对美元汇率走低。

韩国综合股价指数（KOSPI）开盘下跌 3.1%，随后下跌 348.89 点，跌幅 5.46%，收于 6,035.35 点。

外国投资者净卖出价值 4.51 万亿韩元（33.5 亿美元）的股票，而机构投资者和个人投资者分别净买入 1.69 万亿韩元和 2.23 万亿韩元的股票。

韩国交易所（KRX）是韩国的证券交易所运营商，在早盘交易中，由于韩国综合股价指数（KOSPI）下跌超过 5% 并持续至少一分钟，KRX 触发了卖方侧车操作。

交易量适中，为 3.9987 亿股，成交额为 26.79 万亿韩元，下跌股票数量超过上涨股票数量，比例为 628 比 246。

Kiwoom Securities 的分析师韩智英表示：“对 OpenAI 收入的担忧以及本地芯片制造商股票回购完成情况的担忧继续对科技股构成压力。”

隔夜，美国股市收盘涨跌互现，道琼斯工业平均指数上涨0.38%，而以科技股为主的纳斯达克综合指数下跌0.44%。

有报道称中国竞争对手长鑫存储技术有限公司（CXMT）的技术取得了快速进展，导致芯片制造商面临严重下滑。

投资者目前正等待将于周三（美国时间）公布的美国消费者价格指数（CPI）报告，以从中寻找美联储在10月利率决策会议之前政策前景的线索。

在首尔，科技股领跌。

市场巨头三星电子股价下跌7.39%，至23.2万韩元；其芯片制造竞争对手SK海力士股价暴跌10.09%，至144万韩元。

国防巨头韩华航空航天公司股价下跌2.67%，至839,000韩元；顶级汽车制造商现代汽车股价下跌1.56%，至315,000韩元。

在上涨的股票中，航运公司 HMM 上涨 1.15% 至 22,050 韩元，国营公用事业公司韩国电力公司上涨 2.1% 至 29,150 韩元。

截至下午 3:30，韩元兑美元汇率为 1,345.1 韩元，而前一交易日收盘价为 1,335.1 韩元。

2026年10月13日股市收盘后，韩亚银行首尔中央交易大厅内的屏幕上显示着金融数据。（韩联社）

kyongae.choi@yna.co.kr (完)

（导语）受人工智能复苏和通胀担忧引发的科技股抛售影响，首尔股市下跌逾5%。