Why Is NRG (NRG) Down 8.9% Since Last Earnings Report?

It has been about a month since the last earnings report for NRG Energy (NRG) . Shares have lost about 8.9% in that time frame, underperforming the S&P 500.Will the recent negative trend continue leading up to its next earnings release, or is NRG due for a breakout? 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.How Have Estimates Been Moving Since Then?It turns out, ...