ToplineArtificial intelligence chip architect Nvidia again became the world’s most valuable company after impressing investors in its latest quarterly earnings report, helping lift U.S. stocks also jolted by a court ruling challenging President Donald Trump’s most wide-sweeping tariffs.Nvidia CEO Jensen Huang enjoyed a multibillion-dollar boost to his net worth Thursday.AFP via Getty ImagesKey FactsNvidia stock jumped 5% to more than $141 per share Thursday, hitting its highest share price since Feb. 18 as ...