Stock Market Today: Dow ends 500 points lower, S&P 500 and Nasdaq tumble after Fed's Warsh outlines 'new chapter' at first press conference; central bank leaves door open to rate hikes to fight inflation

Stock Market Today: Dow ends 500 points lower, S&P 500 and Nasdaq tumble after Fed's Warsh outlines 'new chapter' at first press conference; central bank leaves door open to rate hikes to fight inflation  MarketWatch

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