Why the recent stock market volatility is "normal"
Stocks finished a wild week mostly down on Friday. The Dow Jones and S&P both ended up losing ground while the Nasdaq made modest gains. With one trading day left in 2018, it's looking like all three major indexes will finish the year as much as seven percent lower than where they began. Yahoo Finance’s editor-at-large, Brian Sozzi, joins “CBS This Morning: Saturday” to discuss what’s behind the volatility.