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Japan and South Korea Stocks Open Stronger, KOSPI Rises Over 3%, SK Hynix and Samsung Electronics Lead

TradingKey

AuthorYulia Zeng

Jul 23, 2026 12:42 AM

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Japanese and South Korean markets trended upward in early trading on July 23, with the KOSPI surging 3.41% and the Nikkei 225 gaining over 0.5%. Semiconductor shares led the rally, as SK Hynix and Samsung Electronics posted significant growth. This bullish sentiment is underpinned by Google’s increased full-year capital expenditure forecast of $195 billion to $205 billion, signaling robust, ongoing investment in AI infrastructure. The positive outlook for AI-related hardware continues to bolster investor confidence across Asian technology sectors, with Micron Technology and CoreWeave seeing gains that further reinforce regional market momentum.

AI-generated summary

TradingKey - In early Asian trading on July 23, Japanese and South Korean stock markets extended the rebound from the previous trading day, with major stock indices both opening higher. The KOSPI rose 3.41%, and the Nikkei 225 rose over 0.5%.

The Korea Composite Stock Price Index (KOSPI) rose 3.41% in early trading, crossing the 7,000-point mark to temporarily stand at 7,029.46 points.

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Source: TradingView

The semiconductor sector continued to lead the gains, with SK Hynix rising 5% and Samsung Electronics gaining 3.65%, its share price climbing back to around 270,000 won (approximately $194.8), as heavyweight tech stocks delivered strong performances.

Japanese equities also maintained their upward momentum, with the Nikkei 225 Index rising over 0.5% to temporarily stand at 66,467.88 points. In individual stocks, Kioxia rose 3.41% to 66,520 yen (approximately $407.84); SoftBank Group climbed 1.6% to 5,792 yen, showing overall strength driven by tech stocks.

On the news front, Google ( GOOGL) raised its full-year capital expenditure forecast to $195 billion to $205 billion, and plans to further expand its use of third-party computing power resources in the third quarter, indicating that investment in AI infrastructure continues to ramp up.

This news drove related stocks higher after-hours, with CoreWeave ( CRWV) rising 2.9%, Micron Technology ( MU) gaining 2.48%, further boosting market sentiment for Asian semiconductor and AI concept stocks.

This content was translated using AI and reviewed for clarity. It is for informational purposes only.

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Disclaimer: The content of this article solely represents the author's personal opinions and does not reflect the official stance of Tradingkey. It should not be considered as investment advice. The article is intended for reference purposes only, and readers should not base any investment decisions solely on its content. Tradingkey bears no responsibility for any trading outcomes resulting from reliance on this article. Furthermore, Tradingkey cannot guarantee the accuracy of the article's content. Before making any investment decisions, it is advisable to consult an independent financial advisor to fully understand the associated risks.

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