(LEAD) Seoul stocks open sharply higher on revived AI optimism, SK hynix earnings

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SEOUL, Oct. 28 (Yonhap) -- South Korean stocks opened sharply higher Wednesday, tracking overnight gains on Wall Street, as strong artificial intelligence (AI)-driven semiconductor earnings lifted investor sentiment ahead of the Federal Reserve's interest rate decision.

The benchmark Korea Composite Stock Price Index (KOSPI) rose 183.73 points, or 3.26 percent, to 5,822.07 as of 9:15 a.m., extending its rally after surging more than 3 percent in the previous session.

Overnight, U.S. stocks extended their gains, led by a rally in AI-related technology shares.

The tech-heavy Nasdaq Composite climbed 1.18 percent, while the Philadelphia Semiconductor Index jumped 3.6 percent, providing a positive note for South Korean chipmakers.

Before the opening bell, SK hynix reported a 631 percent spike in third-quarter operating profit at 83.33 trillion won (US$62.78 billion), with sales soaring 327.9 percent to 104.61 trillion won on robust demand for AI memory chips. The world's second-largest memory chip maker also announced an additional 60 trillion won in shareholder returns.

Meanwhile, investors remained cautious ahead of the Federal Reserve's rate decision early Thursday (Korean time), looking for signals on the future path of U.S. interest rates.

Financial data is shown on a screen in the dealing room of Hana Bank in central Seoul after the market closed on Oct. 26, 2026. (Yonhap)

Market heavyweights rose across the board.

Top market cap Samsung Electronics advanced 4.5 percent, and SK hynix rose 2.39 percent.

SK Square, the parent firm of SK hynix, surged 4.59 percent, and Samsung Electro-Mechanics, an electronics component affiliate of Samsung Electronics, climbed 4.5 percent.

The Korean won was trading at 1,327.1 won against the U.S. dollar at 9:15 a.m., down 0.1 won from the close of the previous stock trading session.

ejkim@yna.co.kr (END)

(LEAD) Seoul stocks open sharply higher on revived AI optimism, SK hynix earnings

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首尔，10月28日（韩联社）——周三，韩国股市大幅高开，追随隔夜华尔街的涨势。强劲的人工智能（AI）驱动型半导体企业盈利提振了投资者在美联储利率决议前的信心。

截至上午 9 点 15 分，韩国综合股价指数 (KOSPI) 上涨 183.73 点，涨幅 3.26%，至 5,822.07 点，延续了前一交易日超过 3% 的涨势。

隔夜，美国股市延续涨势，人工智能相关科技股领涨。

科技股为主的纳斯达克综合指数上涨 1.18%，费城半导体指数上涨 3.6%，这对韩国芯片制造商来说是一个积极的信号。

在开盘前，SK海力士公布第三季度营业利润飙升631%，达到83.33万亿韩元（约合627.8亿美元），销售额也大幅增长327.9%，达到104.61万亿韩元，这主要得益于人工智能存储芯片的强劲需求。这家全球第二大存储芯片制造商同时宣布，将额外向股东派发60万亿韩元的回报。

与此同时，投资者在周四（韩国时间）美联储利率决议公布前保持谨慎，寻找美国利率未来走向的信号。

2026年10月26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）

市场巨头股价全线上涨。

市值最高的三星电子股价上涨 4.5%，SK 海力士股价上涨 2.39%。

SK海力士的母公司SK Square股价上涨4.59%，三星电子的电子元件子公司三星电机股价上涨4.5%。

韩元兑美元汇率在上午 9 点 15 分报 1327.1 韩元，较前一交易日收盘价下跌 0.1 韩元。

ejkim@yna.co.kr (完)

（导语）受人工智能乐观情绪重燃和SK海力士财报提振，首尔股市开盘大幅走高。