Why Is Marathon Petroleum (MPC) Down 14.1% Since Last Earnings Report?

It has been about a month since the last earnings report for Marathon Petroleum (MPC) . Shares have lost about 14.1% in that time frame, underperforming the S&P 500.Will the recent negative trend continue leading up to its next earnings release, or is Marathon Petroleum 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. Marathon Petroleum Tops Q4 Ear ...