How much did the KOSPI and major Korean chip stocks gain at the open on Oct. 27, 2026?

At 9:15 a.m., the KOSPI was up 189.18 points, or 3.46 percent, at 5,658.65. Samsung Electronics gained 4.69 percent and SK hynix rose 7.14 percent.

What renewed optimism about Anthropic lifted AI-related stocks in Seoul?

Anthropic disclosed strong revenue growth in its U.S. IPO filing, reigniting enthusiasm for AI-related stocks. The renewed interest came ahead of major technology earnings and the Federal Reserve’s interest rate decision.

Seoul stocks open higher on Wall Street gains, renewed AI optimism

Q: Why did easing Middle East tensions affect oil prices and investor sentiment in Seoul?

Oil prices retreated on hopes that tensions in the Middle East would ease, following reports of Qatari mediation efforts involving Iran and the United States. The lower oil prices helped lift investor sentiment alongside gains on Wall Street and renewed AI optimism.

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Summary

Korean stocks opened higher in Seoul Tuesday, rising 3.46 percent to 5,658.65 as of 9:15 a.m. on Wall Street gains, renewed AI optimism and easing oil prices. Anthropic’s strong revenue growth disclosed in its U.S. IPO filing revived enthusiasm for AI-related stocks ahead of major technology earnings and the Federal Reserve’s interest rate decision. Samsung Electronics, SK hynix, SK Square and Samsung Electro-Mechanics all advanced. The won traded at 1,325.3 per U.S. dollar.

Key Facts

The Dow Jones Industrial Average gained 0.28 percent overnight, while the S&P 500 rose 0.7 percent and the Nasdaq Composite climbed 0.82 percent.
Samsung Electronics gained 4.69 percent, while SK hynix rose 7.14 percent.
SK Square jumped 10.4 percent, and Samsung Electro-Mechanics surged 8.77 percent.
The won was up 0.7 won against the U.S. dollar from the previous stock trading session’s close at 9:15 a.m.
Oil prices retreated on hopes of easing Middle East tensions following reports of Qatari mediation efforts involving Iran and the United States.

By Yonhap

Published Oct 27, 2026 9:44 am KST

The benchmark KOSPI and KOSDAQ indices are displayed at Hana Bank's dealing room in Seoul, Tuesday. Yonhap

Korean stocks opened higher Tuesday, tracking overnight gains on Wall Street, as renewed optimism over artificial intelligence (AI) and easing oil prices lifted investor sentiment.

The benchmark Korea Composite Stock Price Index (KOSPI) rose 189.18 points, or 3.46 percent, to 5,658.65 as of 9:15 a.m.

Overnight, the Dow Jones Industrial Average gained 0.28 percent, while the S&P 500 advanced 0.7 percent and the tech-heavy Nasdaq Composite climbed 0.82 percent.

Investor sentiment improved after AI startup Anthropic disclosed strong revenue growth in its U.S. initial public offering (IPO) filing, reigniting enthusiasm for AI-related stocks ahead of major tech earnings and the Federal Reserve's interest rate decision.

Oil prices also retreated on hopes of easing tensions in the Middle East, following reports of Qatari mediation efforts involving Iran and the United States.

KOSPI heavyweights rose across the board.

Market bellwether Samsung Electronics gained 4.69 percent, and chip giant SK hynix increased 7.14 percent.

SK Square, the parent firm of SK hynix, jumped 10.4 percent, and Samsung Electro-Mechanics, an electronics component affiliate of Samsung Electronics, surged 8.77 percent.

The Korean won was trading at 1,325.3 won against the U.S. dollar at 9:15 a.m., up 0.7 won from the close of the previous stock trading session.

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