Technical charts are used every day by proprietary trading floors, the Street's biggest financial firms and individual investors to get an edge on the market. And according to some sources, skilled technical traders can bank gains as much as 90% of the time. So with uncertainty bearing down on Main Street investors right now, prescient investors are turning to those technical indicators to catch a glimpse of how difficult elements of market mechanics -- such as investor sentiment and supply and demand -- are taking shape on Wall Street right now. One of the best ways to do that is by taking a look at some of the biggest-name stocks -- the ones that are seeing the highest trading volumes this week. Related: 3 Technical Setups for the Week Every week, we take an in-depth look at three large-cap stocks that are telling important technical stories right now.