Stock market today: Dow falls 250 points, S&P 500, Nasdaq retreat from record as Trump escalates tariff threats

AI kingpin Nvidia crowned as first public company with a $4 trillion valuation

The S&P 500 is starting to close its 2025 gap to foreign stocks as Trump leans in to tariff fights

The S&P 500 Just Made a Bullish Crossover. Here's Why That Might Not Necessarily Mean a Big Rally Is Coming.

Nasdaq fights for positive territory, small caps tumble

The Stock Market Is Doing Worse Than It Looks Today