Why global turmoil hasn't sunk US markets. Yet. - Article Photos 1/4

FILE - In this July 3, 2014 file photo, specialist Jay Woods is reflected in a screen at his post that shows five years of the Dow Jones industrial average, on the floor of the New York Stock Exchange. It’s been a bad news summer, but you wouldn’t know it from the way many investors have reacted. They’ve largely shrugged it off. (AP Photo/Richard Drew, File)