The Alerian MLP exchange-traded fund, or ETF, began trading on the New York Stock Exchange under ticker symbol AMLP on Aug. 25, 2010 at $15.10 per share and trades slightly lower at $14.75 in 2015, according to Yahoo Finance. During its nearly five-year history, AMLP traded at a peak of $19.31 in August 2014 and reached its all-time low on Aug. 3, 2015 with a price of $14.43 per share.
The Alerian MLP ETF is intended to expose investors to the Alerian MLP Infrastructure Index, according to ALPS Advisors Inc. The exchange-traded fund seeks to mirror the price and yield performance of the underlying index. The infrastructure index is a composite of Master Limited Partnerships, called MLPs, in the energy sector. The MLPs selected for inclusion in the Alerian Index, and therefore the ETF, are those that produce cash flow from transporting, storing and processing energy, also known as the midstream energy sector.
As of August 2015, Enterprise Products Partners LP makes up the biggest single holding in AMLP with more than 10 percent of total holdings, explains ALPS Advisors, Inc. MarkWest Energy Partners LP and Energy Transfer Partners LP each constitute about 8 percent of the fund's total holdings. Overall, the ETF includes more than 20 companies. The three smallest holdings in the fund are NGL Energy Partners LP, Shell Midstream Partners LP and Crestwood Midstream Partners LP, with less than 2 percent of all holdings each.