Seoul stocks rebound as Anthropic IPO revives AI investment sentiment

Korean stocks rebounded in Seoul Tuesday as news of Anthropic’s planned IPO lifted investor appetite and semiconductor shares. The KOSPI closed at 5,638.34, up 3.09 percent, while the Kosdaq gained 2.29 percent to 743.83. SK hynix and Samsung Electronics rose 5.18 percent and 4.23 percent, respectively. Investors faced a busy calendar of company earnings, policy events and the U.S. midterm elections.

The KOSPI opened at 5,658.65, up 3.46 percent from its previous close, and a buy-sidecar suspended program buy orders for five minutes at 10:13 a.m.

Foreign investors were net buyers of 835.9 billion won, and institutions bought a net 418.5 billion won; retail investors sold a net 1.4 trillion won.

Anthropic filed a registration statement with the U.S. Securities and Exchange Commission for a proposed IPO seeking to raise as much as $100 billion.

SK hynix shares closed at 1.34 million won, while Samsung Electronics shares closed at 222,000 won.

The won weakened 0.6 won against the U.S. dollar to close at 1,323.7 won.

Published Oct 27, 2026 4:29 pm KST

Updated Oct 27, 2026 4:29 pm KST

A stock ticker at Hana Bank's headquarters in Seoul shows the benchmark KOSPI closing at 5,638.34, up 3.09 percent from the previous close, Wednesday. Yonhap

Korean stocks rebounded Tuesday, led by gains in the country’s semiconductor heavyweights, as news of U.S. artificial intelligence (AI) company Anthropic’s planned blockbuster initial public offering (IPO) revived investor appetite after a recent pullback.

The benchmark KOSPI opened at 5,658.65, up 3.46 percent from the previous close, according to the Korea Exchange. A buy-sidecar was triggered early in the session at 10:13 a.m., temporarily suspending program buy orders for five minutes after the market’s surge breached the volatility threshold.

The index remained in positive territory throughout the session, closing at 5,638.34, up 3.09 percent.

Foreign investors and institutions were net buyers of 835.9 billion won ($631.05 million) and 418.5 billion won, respectively, while retail investors sold a net 1. 4 trillion won.

The rebound followed reports that Anthropic, the developer behind the Claude AI chatbot, had filed a registration statement with the U.S. Securities and Exchange Commission for a proposed IPO. The AI giant is seeking to raise as much as $100 billion, which would make it the biggest ever public offering on Wall Street.

The news, which helped ease recent concerns over the profitability of the industry, lifted shares of Korea’s semiconductor heavyweights. SK hynix rose 5.18 percent to 1.34 million won, while Samsung Electronics gained 4.23 percent to close at 222,000 won.

Still, investors face a packed calendar of earnings reports and policy events that could determine whether the rebound gains momentum.

“Major events are lined up in the coming days, including SK hynix’s preliminary earnings report on Wednesday, Samsung Electronics’ final third-quarter results and shareholder return plans on Thursday, the Federal Open Market Committee (FOMC) meeting and earnings from Microsoft and Alphabet early Thursday, Amazon’s results early Friday, as well as the U.S. midterm elections on Nov. 3,” said Lee Jae-won, an analyst at Yuanta Securities.

The secondary bourse Kosdaq opened 2.18 percent higher at 743.09 before closing at 743.83, up 2.29 percent.

In the Seoul foreign exchange market, the won weakened 0.6 won against the U.S. dollar to close at 1,323.7 won.

周二，受Anthropic计划IPO的消息提振，韩国股市在首尔反弹，半导体股也随之走高。韩国综合股价指数（KOSPI）收于5638.34点，上涨3.09%；韩国创业板指数（KOSDAQ）上涨2.29%，收于743.83点。SK海力士和三星电子分别上涨5.18%和4.23%。投资者面临着一系列公司财报、政策事件以及美国中期选举等诸多重要事件。

韩国综合股价指数（KOSPI）开盘报5658.65点，较前一交易日收盘价上涨3.46%。上午10点13分，买入交易指令暂停了程序化买单交易5分钟。

外国投资者净买入8359亿韩元，机构投资者净买入4185亿韩元；散户投资者净卖出1.4万亿韩元。

Anthropic 向美国证券交易委员会提交了一份注册声明，拟进行首次公开​​募股 (IPO)，目标是筹集高达 1000 亿美元的资金。

SK海力士股价收于134万韩元，三星电子股价收于22.2万韩元。

韩元兑美元汇率下跌0.6韩元，收于1323.7韩元。

发布于2026年10月27日下午4:29（韩国标准时间）

更新于2026年10月27日下午4:29（韩国标准时间）

韩联社报道，首尔韩亚银行总部的股票行情显示屏显示，韩国综合股价指数（KOSPI）周三收于5638.34点，较前一交易日上涨3.09%。

周二，韩国股市反弹，该国半导体巨头领涨，此前美国人工智能公司 Anthropic 计划进行重磅首次公开募股 (IPO) 的消息提振了投资者在近期回调后的信心。

据韩国交易所数据显示，基准股指KOSPI开盘报5658.65点，较前一交易日收盘价上涨3.46%。上午10点13分，市场波动率突破阈值后，触发买入侧挂指令，暂停程序化买单交易5分钟。

该指数在整个交易时段内保持上涨趋势，收于 5,638.34 点，上涨 3.09%。

外国投资者和机构投资者分别净买入8359亿韩元（6.3105亿美元）和4185亿韩元，而散户投资者净卖出1.4万亿韩元。

此前有报道称，Claude AI聊天机器人的开发商Anthropic已向美国证券交易委员会提交了IPO注册声明，此举推动了股价反弹。这家人工智能巨头计划筹集高达1000亿美元的资金，这将使其成为华尔街有史以来规模最大的IPO。

这一消息缓解了近期市场对半导体行业盈利能力的担忧，提振了韩国半导体巨头的股价。SK海力士股价上涨5.18%，至134万韩元；三星电子股价上涨4.23%，收于22.2万韩元。

不过，投资者仍面临着一系列财报和政策事件，这些事件可能会决定经济反弹能否获得动力。

元大证券分析师李在元表示：“未来几天将有重大事件发生，包括周三SK海力士的初步盈利报告、周四三星电子的第三季度最终业绩和股东回报计划、周四早些时候的联邦公开市场委员会（FOMC）会议以及微软和Alphabet的财报、周五早些时候亚马逊的业绩，以及11月3日的美国中期选举。”

韩国第二大证券交易所 Kosdaq 开盘上涨 2.18%，报 743.09 点，收盘上涨 2.29%，报 743.83 点。

在首尔外汇市场，韩元兑美元汇率下跌0.6韩元，收于1323.7韩元。