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Wall Street Mixed Early as Chip Sell-Off Continues

Heavy losses in SK Hynix and Samsung dragged the KOSPI down about 10% as renewed AI spending concerns hit global semiconductor shares.

  • On Tuesday, South Korea's KOSPI index plunged nearly 11% to 6,023.66, marking its lowest level since April as heavy selling pressure in computer chipmaking stocks triggered temporary trading halts.
  • Renewed concerns over rising competition from Chinese startups and domestic mass production of deep ultraviolet chipmaking tools drove the sell-off, as traders questioned whether AI-related market gains would sustain.
  • Shares in Samsung Electronics sank 13.4%, while SK Hynix tumbled 14.7%, as the two companies account for more than half of the KOSPI's weighting and led the index lower.
  • Regional markets suffered contagion: Japan's Nikkei fell 4.1% and Shanghai Composite lost 1.2%, though Morningstar equity analyst Jing Jie Yu called the sell-off "a knee-jerk reaction and overdone."
  • Deutsche Bank strategist Jim Reid noted that global chipmaking leaders' dominant position remains intact despite current volatility, suggesting the sell-off reflects AI investment spending concerns rather than structural competitive threats.
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The Dow Jones, with its industrial focus, gained 1.03%, while the Nasdaq, which tracks major technology companies, lost 0.22%. The broader S&P 500 index rose 0.22%.

·Issy-les-Moulineaux, France
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WPLG broke the news in Miami, United States on Tuesday, July 28, 2026.
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