Stock market live updates: Dow down 700, Powell pledges support, Apple near bear market

Stocks tumble -- on pace for worst week since the financial crisis"CNNDow Jones Slammed Again As WHO Raises Coronavius Threat Level; Top Chip Stock Shows Bullish Action"Investor's Business DailyDow sinks more than 1,000 points, S&P 500 plunges as the coro