Chinese chipmaker CXMT surges 466% in Shanghai trading debut
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Chinese chipmaker CXMT surges 466% in Shanghai trading debut
NvidiaOpenAISamsung ElectronicsCXMTSK Hynix

South Korean chip stocks face intensified sell-off as investors ditch shares amid AI investment concerns and competition from China

South Korean chip stocks, including Samsung and SK Hynix, plummeted over 10% amid growing investor concerns about AI spending and competition from China, driving the Kospi index to its lowest level in three months, as fears of excessive borrowing by AI firms mount.

The Guardian The Guardian28 July 2026 · 09:58 UTC
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South Korean chip stocks are facing a significant sell-off, with Samsung and SK Hynix both dropping over 10%. This decline is attributed to rising concerns over AI investment and increasing competition from Chinese firms, which are producing cheaper alternatives.

The Kospi index has fallen to its lowest level in three months, reflecting a broader trend in the market as investors react to the intensified sell-off in AI stocks. Analysts have pointed out that the fears are compounded by the huge borrowing among AI companies to finance their datacentre expansions.

In a notable development, shares of the Chinese memory chip maker CXMT surged by 466% upon its debut on the Shanghai stock exchange, highlighting the competitive pressure on South Korean firms. Additionally, China has commenced mass production of homegrown deep ultraviolet (DUV) chip-making tools, further intensifying the competition.

The market's reaction to these developments has been swift, with Nvidia also experiencing a 5% drop in shares, closing below the $200-per-share mark. This has led to speculation that it may not be the right time to invest in AI stocks, as indicated by the spike in Nvidia’s five-year CDS rates.6

Key Insight
“Investors are increasingly concerned about the significant borrowing by AI companies for datacentre expansions, contributing to the sell-off. Additionally, analysts note that competition from cheaper Chinese firms, particularly with CXMT's recent 466% share rise, is exacerbating the situation.”
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“Samsung and SK Hynix fall by more than 10% amid renewed fears over AI spending and Chinese competition”
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