It has been about a month since the last earnings report for CoStar Group (CSGP) . Shares have lost about 3.8% in that time frame, underperforming the S&P 500.Will the recent negative trend continue leading up to its next earnings release, or is CoStar due for a breakout? Before we dive into how investors and analysts have reacted as of late, let's take a quick look at its latest earnings report in order to get a better handle on the important drivers.CoStar Group Q3 Earnings Beats Estimate, Revenue Increas ...