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Kospi Surges Past 6,800 as Samsung, SK Hynix and SoftBank Jump Over 3%

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AuthorBlock Tao

Sep 18, 2026 12:40 AM

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On September 18 Asian time, Asian stock markets surged, driven by a strong rebound in US tech stocks following eased risk aversion from the Federal Reserve's rate decision. The KOSPI Index jumped 2.3% past 6,880 points, while the Nikkei 225 gained 1.02%, fueled by broad rallies in semiconductors like Samsung Electronics, SK Hynix, and Kioxia, alongside SoftBank. Additionally, international crude oil prices pulling back below $100 per barrel and declining US Treasury yields significantly alleviated energy import cost pressures and long-term interest rate concerns for Japan and South Korea.

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TradingKey - KOSPI surges 2.3% to cross 6,800 points, as semiconductors, SoftBank, and Kioxia rally across the board.

On September 18 Asian time, Japanese and South Korean stock markets opened higher and moved higher overall, driven by a rebound in US tech stocks. Among them, the KOSPI Index gapped up by about 2.3%, rising over 150 points to breach the 6,888 mark at the open, and was temporarily trading at 6,868.24 points.

Two core tech chip stocks opened higher and moved higher, surging over 3%. Among them, Samsung Electronics rose 3.07%, breaking above the 260,000 mark to temporarily trade at 260,500 KRW; SK Hynix jumped 3.72%, breaching the 1.8 million mark to temporarily trade at 1,810,000 KRW.

kospi-adf46d9b1b844fde9ad7317456b251e2 KOSPI Index chart, Source: TradingView

The Nikkei 225 Index opened higher and moved higher, gaining 1.02% to temporarily stand at 64,765.34 points. Both major heavyweight stocks rose over 3%, with SoftBank's stock price rising 3.06% to temporarily trade at 6,438 JPY, while Kioxia rose 3.03% to temporarily trade at 51,390 JPY.

Overnight US stocks saw market risk aversion ease significantly after digesting the Federal Reserve's 25-basis-point rate hike decision. Tech stocks and the Philadelphia Semiconductor Index (SOX) staged a strong rebound, directly injecting robust buying momentum into leading Asian chip and AI supply chain stocks at the open.

In addition, international crude oil prices experienced a notable pullback, with both Brent crude (UKOIL) and WTI crude (USOIL) prices falling below $100 per barrel today, significantly easing corporate production cost pressures in Japan and South Korea, which are highly dependent on energy imports. The decline in crude oil prompted US Treasury yields to pull back from high levels, greatly alleviating market concerns that "high inflation will push up long-term interest rates."

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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