Exxon Mobil and Chevron are among the Big Oil names set to report Q1 earnings this week, and investors will be focused on how falling oil prices have raised the risk to dividends ...

Phillips 66 (NYSE:PSX) -0.8% in Friday's trading after reporting a larger than expected Q1 adjusted loss, hurt by lower refining margins in a heavy turnaround season across the U.S. refining sector.