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KOSPI plunges on US AI investment concerns

Seoul stocks plunged more than 5% late Friday morning, tracking Wall Street losses, as renewed concerns over the sustainability of the AI boom hit tech shares. The KOSPI tumbled over 4% intraday, triggering a halt in program selling, after opening 2.99% lower. Goldman Sachs cut its 12-month KOSPI target by 25% to 9,000, citing concerns over AI infrastructure returns. Korean media report the sell-off follows disappointing US quarterly results and persistent worries about AI profitability.

  1. Seoul stocks down over 5% late Fri. morning on tech losses amid AI concerns Korea Times · 2026-10-30
  2. (URGENT) Seoul stocks open lower on Wall Street losses, AI concerns Yonhap · 2026-10-30
  3. Seoul stocks open lower on Wall Street losses, AI concerns Korea Times · 2026-10-30
  4. Goldman Sachs Cuts KOSPI Target to 9,000, Still Seeing Over 60% Upside Business Korea · 2026-10-26
  5. KOSPI Tumbles More than 4% in Intraday Trading; Program Selling Halted KBS World · 2026-10-30
  6. Seoul shares open lower amid persistent AI woes Korea Times · 2026-10-22

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