Stock market today: Dow, S&P 500, Nasdaq smoked as Powell warns of 'challenging' tariff impact, Nvidia plunges 7%

S&P 500 falls 3% as losses accelerate with Nvidia and other tech stocks leading the way lower

Dow closes nearly 700 points lower after Powell comments

Fed Chief Jerome Powell Signals Trump Tariffs 'Tension' On Inflation, Growth; Dow Jones Extends Losses

Stock Slide Picks Up Steam. Dow Down 400 Points.

Wall Street’s 12 favorite stocks could soar as much as 54% over the next year, analysts say