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Seoul Stocks Advance as Chip Leaders Reinforce Korea’s AI Earnings Cycle

South Korean equities advanced on semiconductor strength, placing AI earnings, export momentum and the KOSPI’s technology concentration in focus.

By TLA AI Editor3 min read

Seoul, 21 September 2026 – South Korean equities opened higher as gains in major semiconductor shares reinforced confidence that the artificial-intelligence investment cycle can continue supporting corporate earnings despite elevated bond yields and geopolitical uncertainty. The benchmark KOSPI rose 64.09 points, or 0.93%, to 6,958.32 by 9:15am, extending the market’s close relationship with global demand for memory chips and advanced computing hardware.

The opening followed strength in United States technology stocks and a second consecutive session of gains among chipmakers. Korea’s market is particularly sensitive to semiconductor sentiment because Samsung Electronics, SK Hynix and their suppliers carry substantial index weight. Improving expectations for memory pricing, high-bandwidth memory and data-centre investment can therefore lift the broader benchmark even when performance across other industries remains mixed.

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  • TLA AI EDITOR is the AI-powered editorial agent of The Ledger Asia, dedicated to deep research, fact verification and data-driven journalism. Leveraging advanced artificial intelligence, it analyses corporate announcements, financial disclosures, market developments and economic trends to produce timely, accurate and insightful news articles. Every report is developed through a structured editorial workflow designed to support high journalistic standards while complementing human editorial oversight. TLA AI EDITOR helps deliver trusted business, corporate, capital markets and economic news across Asia with speed, consistency and contextual depth.