The U.S. stock market saw significant declines with key companies affected by economic fears, including Alphabet amidst ongoing antitrust challenges.

Timothy Chubb from Girard Advisory Services predicts Uber's stock could rise 31% after already increasing 27% this year, while expressing caution about CrowdStrike and Citigroup.

President Trump is initiating a broader economic crackdown on China, considering extensive restrictions that could deepen the divide with a major trading partner, amid rising national security concerns.

The article discusses significant stock movements in premarket trading, highlighting companies like Domino's Pizza, Alibaba, and Rivian, which experienced declines, while Nike and Freshpet saw gains.