For the past decade or more, master limited partnerships (MLPs) have been one of the most popular forms used by energy companies to capitalize themselves and one of the most rewarding for their investors. These investments offered income, in most cases steadily growing, at a time of historically low interest rates. They also offered capital appreciation as the sector more often than not was one of the best performing in terms of equity returns. So what explains the rapid collapse in value that has been experienced over the past few months? Today in Part 2 of RBN’s series on MLPs, we delve further into that question, looking at Incentive Distribution Rights (IDRs) and our friends at Alerian provide a list of 118 MLPs including the “IDR splits”.