Japanese and South Korean Stocks Drop as AI Firms Boost China A-Shares

South Korean stocks fell 3.17% on open as AI supply chain firms report strong earnings.

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Oct 19, 2026

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Japanese and South Korean Stocks Drop as AI Firms Boost China A-Shares

South Korean stocks fell 3.17% on open as AI supply chain firms report strong earnings.

In brief

South Korean stocks fell 3.17% on open as AI supply chain firms report strong earnings. South Korea's KOSPI index dropped 3.17% on October 19, led by SK Hynix and Samsung Electronics, while China A-share AI supply chain firms reported profit growth and buybacks. Originally reported by BigGo Finance.

Stock Markets Open Lower

Japanese, South Korean Stocks Slump at Open; KOSPI Falls Over 3% as China A-Share AI Supply Chain Firms Cluster With Positive Previews

Japanese and South Korean stock markets opened broadly lower on October 19.

KOSPI Falls 3.17%

South Korea's KOSPI index fell 3.17% at the open, with SK Hynix down more than 4% and Samsung Electronics down over 3%.

Nikkei 225 Drops 0.77%

The Nikkei 225 opened 0.77% lower, extending selling pressure on U.S. tech stocks.

U.S. Tech Stocks Weakened

U.S. Tech Stocks Weakened

U.S. stocks weakened last Friday with the Nasdaq down 2.15% and major tech stocks falling sharply.

China A-Share AI Firms Report Earnings

China A-share artificial intelligence supply chain companies issued positive third-quarter earnings previews.

CXMT Reports Profit Swing

CXMT expects a profit of 131 billion to 132.5 billion yuan for the first three quarters, swinging to profit.

Demingli Reports Profit Swing

Demingli forecasts net profit of 8.65 billion to 8.95 billion yuan, swinging to profit.

Shengyi Technology Grows Profits

Shengyi Technology reports net profit growth of 164% to 181% year-on-year.

Hengtong Optic-Electric Grows Profits

Hengtong Optic-Electric forecasts net profit up 151% to 168% year-on-year.

State Council Emphasizes AI

China's State Council Executive Meeting emphasized deepening the 'AI+' initiative.

Export Restrictions Proposed

China's Ministry of Commerce and Ministry of Science and Technology proposed adding 23 AI technologies to export restrictions.

Share Buybacks Announced

STAR Market companies launched share buybacks, with CXMT proposing a buyback of 1 billion to 2 billion yuan.

AI Policy Signals

China's AI policy signals include expanding the 'AI+' initiative and strengthening computing power coordination.

Market Reaction

U.S. AI stocks lost $1.1 trillion in market value this week while China A-shares showed resilience.

What it means

South Korea's KOSPI index dropped 3.17% on October 19, led by SK Hynix and Samsung Electronics, while China A-share AI supply chain firms reported profit growth and buybacks.

Read the original on BigGo Finance

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