(2nd LD) Seoul stocks slide over 3 pct on profit-taking amid persistent AI woes

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SEOUL, Oct. 22 (Yonhap) -- South Korean shares plunged more than 3 percent Thursday as investors took profits on major chip shares following a rebound in the previous session, amid concerns over investments in the artificial intelligence (AI) value chain. The Korean won strengthened against the U.S. dollar.

The benchmark Korea Composite Stock Price Index (KOSPI) fell 201.8 points, or 3.52 percent, to 5,533.77.

The index opened down 1.14 percent before briefly turning positive to reach an intraday high of 5,740.28. It soon resumed its decline, with losses deepening sharply.

The KOSPI had rebounded more than 3 percent in the previous session, recovering from steep losses as semiconductor shares rallied.

Financial data is shown on a screen inside the dealing room of Hana Bank in central Seoul on Oct. 22, 2026. (Yonhap)

Overnight, U.S. stocks closed mixed as AI-related shares rebounded following SpaceX's quarterly results.

The Dow Jones Industrial Average rose 0.69 percent, while the S&P 500 gained 0.58 percent and the tech-heavy Nasdaq Composite advanced 1.05 percent.

After delivering sound earnings, Meta Platforms boosted its bet on the AI sector.

"Although Meta and Tesla reported earnings that exceeded market expectations, their results failed to ease concerns over profitability amid massive AI investments," Lee Kyoung-min, an analyst at Daishin Securities, said.

"The KOSPI's losses widened as the end of SK hynix's share buyback program reduced a source of support for market demand," he added.

Trade volume was light at 201.17 million shares worth 13.7 trillion won (US$10.4 billion), with decliners far outnumbering advancers 706 to 174.

Foreigners and individuals bought a net 6.1 billion won and 38.1 billion won, respectively, while institutions offloaded a net 46.3 billion won.

Market heavyweights fell across the board, led by a sharp sell-off in technology shares.

Market bellwether Samsung Electronics fell 4.03 percent to close at 214,500 won, while rival chipmaker SK hynix declined 5.49 percent to 1.22 million won.

Samsung Electro-Mechanics, an electronics component affiliate of Samsung Electronics, went down 1.97 percent to 1.15 million won after opening higher on news of its partnership with Nvidia.

The Korean won was quoted at 1,324.2 won against the U.S. dollar as of 3:30 p.m., up 1 won from the previous stock trading session's close.

Bond prices, which move inversely to yields, closed lower. The yield on three-year Treasurys added 1.8 basis points to 3.840, and the return on the benchmark five-year government bonds went up 1.9 points to 3,983.

(2nd LD) Seoul stocks slide over 3 pct on profit-taking amid persistent AI woes

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（注意：底部添加了债券收益率；更换了照片）

首尔，10月22日（韩联社）——周四，韩国股市暴跌逾3%，投资者在前一交易日芯片股反弹后获利了结，同时对人工智能（AI）价值链投资的担忧也加剧了股市下跌。韩元兑美元汇率走强。

韩国综合股价指数（KOSPI）下跌201.8点，跌幅3.52%，收于5533.77点。

该指数开盘下跌1.14%，随后短暂反弹，触及盘中高点5740.28点。但很快又恢复下跌，跌幅急剧扩大。

韩国综合股价指数（KOSPI）在前一交易日反弹超过3%，从此前的大幅下跌中收复失地，主要得益于半导体股的上涨。

2026年10月22日，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）

隔夜，美国股市收盘涨跌互现，人工智能相关股票在SpaceX公布季度业绩后反弹。

道琼斯工业平均指数上涨0.69%，标准普尔500指数上涨0.58%，以科技股为主的纳斯达克综合指数上涨1.05%。

在取得稳健的盈利之后，Meta Platforms加大了对人工智能领域的投资。

大信证券分析师李京敏表示：“尽管Meta和特斯拉公布的收益超出了市场预期，但它们的业绩未能缓解人们对大规模人工智能投资下盈利能力的担忧。”

“随着SK海力士股票回购计划的结束，市场需求的一个支撑来源减少，韩国综合股价指数（KOSPI）的跌幅扩大，”他补充道。

交易量清淡，为 2.0117 亿股，价值 13.7 万亿韩元（104 亿美元），下跌股票数量远远超过上涨股票，比例为 706 比 174。

外国人和个人分别净买入 61 亿韩元和 381 亿韩元，而机构净卖出 463 亿韩元。

市场巨头全线下跌，其中科技股遭遇暴跌。

市场风向标三星电子股价下跌 4.03%，收于 214,500 韩元；而竞争对手芯片制造商 SK 海力士股价下跌 5.49%，至 122 万韩元。

三星电子旗下电子元件子公司三星电机股价在与英伟达达成合作的消息公布后，开盘走高，但随后下跌 1.97%，至 115 万韩元。

截至下午 3:30，韩元兑美元汇率为 1,324.2 韩元，比前一交易日收盘价上涨 1 韩元。

债券价格与收益率呈反向走势，最终收跌。三年期美国国债收益率上涨1.8个基点至3.840，五年期基准政府债券收益率上涨1.9个基点至3983。

（第二部分）受人工智能持续低迷的影响，首尔股市因获利回吐而下跌逾3%。