Marathon Oil (MRO) has seen a strong rally in the past month. The company has risen ~15% from its lows of $19 in August. The recent rally in Marathon Oil could be due to the gains in crude oil prices and a slight improvement in the price differentials. Global supply concerns including Iran sanctions and a decline in US inventories continue to drive the positive momentum in crude oil prices. US crude oil went past $71 per barrel on September 19. Overall, WTI has risen ~10.0% from its August lows.