Stock market volatility works in both directions. A day after gaining more than 1,000 points, the Dow fell 500 points this morning. The S&P 500 fell 2.1% and the Nasdaq was down 2.2%. The Nasdaq fell back into bear market territory. What is behind the ups and downs? Jeffrey Sandler, portfolio manager for Linton Wealth with Raymond James joins us in studio to help us understand.