WMZ Williams Pipeline Partners LP Common Units Representing Limited Partner Interests

DALLAS, Aug. 31 /PRNewswire/ -- Alerian announced today that following the close of business on Tuesday, August 31, DCP Midstream Partners LP (NYSE: DPM) will be added to the Alerian Natural Gas MLP Index (NYSE: ANGI), replacing Williams Pipeline Partners LP (NYSE: WMZ) in a special rebalancing.

Special rebalancings are triggered by corporate actions that result in the termination of trading of an index constituent on a major US exchange. Such corporate actions include, but are not limited to, mergers, delistings, and bankruptcies. Subject to unitholder approval, Williams will cease to trade on the New York Stock Exchange at the close of business on August 31 due to its merger with Williams Partners LP (NYSE: WPZ).

DCP is a midstream master limited partnership that gathers, treats, processes, transports, and markets natural gas, transports and markets natural gas liquids, and is a leading wholesale distributor of propane.

DPM Shares Outstanding: 37,598,183

DPM Investable Weight Factor: 0.67592243321369

The 15 constituents of the index will be rebalanced on an equal-weighted basis in accordance with the existing index methodology. Constituent additions to and deletions from the index do not reflect an opinion by Alerian on the investment merits of the respective securities.

About the Alerian Natural Gas MLP Index

The Alerian Natural Gas MLP Index is an equal-weighted composite of the 15 largest natural gas infrastructure Master Limited Partnerships by market capitalization. The index, whose constituents earn the majority of their cash flow from the transportation, storage, and processing of natural gas and natural gas liquids, provides investors with an unbiased benchmark for the infrastructure component of the natural gas industry. The index is disseminated real-time on a price-return basis (NYSE: ANGI), and the corresponding total-return index is disseminated daily through ticker ANGIX. Relevant data points such as dividend yield are also published daily. For index values, constituents, and announcements regarding constituent changes, please visit www.alerian.com.

About Alerian

Alerian is an independent company that provides objective market information. The company is a leader in MLP-market intelligence, providing benchmarks, data sets, and analytics that are used extensively by a range of stakeholders such as investment banks, stock exchanges, investment professionals, consultants, and Master Limited Partnerships. The Alerian Index Series is used for the purposes of asset allocation, investment analysis, portfolio hedging, and the creation of index tracking funds. Alerian is widely known for maintaining the leading benchmark of MLP equities: the Alerian MLP Index (NYSE: AMZ). For more information, please visit www.alerian.com.

SOURCE Alerian