Korean Chip Stocks Sink on Chinese Rival Worry, Broadcom Remarks

Live updates

1. 2h ago

   South Korean Chip Stocks Plunge as AI Boom Cools and Chinese Rivalry Rises

   South Korean semiconductor shares, led by Samsung Electronics and SK Hynix, have plummeted as the artificial intelligence stock rally loses momentum. The Kospi index fell more than 7%, breaking the 6,000 mark, while foreign investors exited the market. This downturn follows warnings from Broadcom regarding AI infrastructure funding durability and claims of strong progress from Chinese competitor CXMT. The sell-off has expanded to include other global chipmakers like Micron, AMD, and Intel amid broader fears of oversupply and reduced AI investment.

   Why it matters

   South Korea's economy is heavily dependent on semiconductor exports, making the Kospi highly sensitive to chip sector volatility. The current slide reflects a shift in investor sentiment from aggressive AI growth to concerns over funding sustainability and geopolitical competition.

   What is confirmed

   • Samsung Electronics and SK Hynix shares have extended their selloff.
   • The Kospi index fell more than 7% and dropped below the 6,000 mark.
   • Foreign investors are exiting South Korean stocks as the AI boom loses steam.
   • Broadcom remarks regarding AI infrastructure funding contributed to the sector decline.
   • The semiconductor sell-off includes Micron, Intel, and AMD.
   • The KRX activated a sell-side sidecar for the KOSPI due to the sharp fall.

   Still unconfirmed

   • Chinese rival CXMT claims strong progress in the semiconductor industry.
   • Broadcom's boss compared AI investing to a specific unnamed scenario that triggered the drop.

   What to watch next

   • Further statements from Broadcom on AI infrastructure funding durability
   • Official performance data from CXMT regarding its semiconductor advancements
   • KRX updates on market stability measures for the KOSPI
   Sources used for this update (19)

   1. finance.yahoo.com — Yahoo Finance - Stock Market Live, Quotes, Business & Finance News
   2. Business Insider — The World's Hottest AI Stock Market Has Gone Cold
   3. Bloomberg.com — Korean Chip Stocks Sink on Chinese Rival Worry, Broadcom Remarks
   4. Investing.com — Foreign investors flee South Korean stocks as AI boom loses steam By Investing.com
   5. TradingView — News by CNBC TV18 on TradingView, 2026-10-13 — cnbctv:570cb7159094b:0
   6. The Korea Times — KRX activates sell-side sidecar for KOSPI on sharp fall
   7. Yahoo Finance — SNDK, MU, INTC, AMD, SKHY: Chip Stocks Extend Slide As AI Funding Concerns, China Competition Weigh On Sector
   8. The Hill — South Korea’s Kospi index sinks more than 7% on semiconductor share sell-off over AI boom worries
   9. Yahoo Finance — Chip selloff extends as South Korean stock market sinks 6%
   10. 조선일보 — KOSPI Breaks 6,000 Mark as Samsung, SK Hynix Plunge
   11. MarketWatch — The Korean stock market’s in freefall, and these are the reasons why
   12. help.naver.com — Futures Flat As Oil Rebounds After Trump's "Energy Ceasefire" Unravels, Memory Stocks Slide | ZeroHedge
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