It has been about a month since the last earnings report for Discover (DFS) . Shares have added about 15.5% in that time frame, outperforming the S&P 500.Will the recent positive trend continue leading up to its next earnings release, or is Discover due for a pullback? Before we dive into how investors and analysts have reacted as of late, let's take a quick look at the most recent earnings report in order to get a better handle on the important catalysts. Discover Financial's Q3 Earnings Beat on Interest I ...