Wikipedia
Alerian
Alerian, based in Dallas, TX, is an independent company that provides transparent master limited partnerships (MLP) and energy infrastructure benchmarks and analytics. The flagship Alerian MLP Index (AMZ) is widely used by industry professionals to analyze relative performance. Its vision is to equip investors to make informed decisions about MLPs and energy infrastructure.
As of September 30, 2015, Alerian indicated that total assets of exchanged-traded products linked to the Alerian Index Series exceeded $13 billion.