Alerian MLP Index

Founded in 2004, Alerian is an independent information services company that provides transparent master limited partnerships and energy infrastructure benchmarks and analytics. The Alerian MLP Index is the leading gauge of energy infrastructure Master Limited Partnerships (MLPs). The index is a float-adjusted, capitalization-weighted index, whose constituents represent approximately 85% of total float-adjusted market capitalization. The capped, float-adjusted, capitalization-weighted index, whose constituents earn the majority of their cash flow from midstream activities involving energy commodities, is disseminated in real-time on a price-return basis (AMZ) and on a total-return basis (AMZX).