Stock market today: Dow, S&P 500, Nasdaq fall as Samsung, DeepSeek spark chip sell-off and oil rises Yahoo FinanceStock Market Today: Nasdaq Slides After Samsung Sparks Tech Selloff — Live Updates WSJNasdaq falls sharply as AI worries hit semiconductor stocks Honolulu Star-AdvertiserStock market today: Dow, S&P 500, Nasdaq futures slip with AI trade in focus Yahoo Finance
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