Loading...Loading...The price action in Delta Air Lines, Inc. DAL offers a great lesson in technical analysis. When markets sell off, they tend to find support at price levels that have previously been peaks or tops.As you can see on the chart, the $42.50 level was the peak or top for Delta in December and January. The stock is making a large move lower today because of disappointing earnings. Not surprisingly, it found support right around $42.50. This is why our team of trading experts has made it our Sto ...