This sell-off is just getting started and could take S&P 500 down to test February lows: Peter Boockvar

4:00 AM ET Tue, 23 Oct 2018

Stocks get slammed. Will the S&P 500 re-test its 2018 lows? With Peter Boockvar, Bleakley Advisory Group, CNBC's Sue Herera and the Futures Now traders, Jim Iuorio and Bob Iaccino, both at the CME.