The Oils-Energy group has plenty of great stocks, but investors should always be looking for companies that are outperforming their peers. Has Marathon Oil (MRO) been one of those stocks this year? Let's take a closer look at the stock's year-to-date performance to find out. Marathon Oil is one of 249 individual stocks in the Oils-Energy sector. Collectively, these companies sit at #8 in the Zacks Sector Rank. The Zacks Sector Rank gauges the strength of our 16 individual sector groups by measuring the aver ...