US stock futures in turmoil: Dow, S&P 500, Nasdaq drop as Trump tariffs ruled illegal, Treasury yields climb, Nvidia and AI stocks slide
U.S. stock futures sank Tuesday morning as investors returned from the Labor Day break to a storm of fresh risks — a federal court ruling most Trump-era tariffs illegal, Treasury yields climbing toward multi-month highs, and renewed pressure on Nvidia and AI chipmakers after reports Alibaba is building its own rival processor. The selloff put Dow, S&P 500, and Nasdaq futures firmly in the red, setting up a volatile week ahead of the August jobs report.
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