Why did UnitedHealth’s stock plunge recently? How are Trump’s tariffs impacting U.S. retailers? What caused Nvidia CEO to call chip export policy a failure? Why is Target cutting its sales outlook? How is Bitcoin reaching new all-time highs? What’s the effect of rising U.S. Treasury yields on stocks? Why did OpenAI buy Jony Ive’s hardware startup? How are AI advancements reshaping business strategies? What’s behind Walmart’s response to Trump’s tariffs?