Alerian Announces Crosstex Energy LP Added to the Alerian MLP Infrastructure Index

DALLAS, Sept. 6, 2011 /PRNewswire/ -- Alerian announced today that Crosstex Energy LP (NASDAQ: XTEX) is expected to be added to the Alerian MLP Infrastructure Index (NYSE: AMZI), replacing Duncan Energy Partners LP (NYSE: DEP) 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, DEP will cease to trade on the New York Stock Exchange due to its merger with Enterprise Products Partners LP (NYSE: EPD).

Crosstex is a midstream natural gas company that operates approximately 3,300 miles of pipeline, nine processing plants, and three fractionators.

XTEX Shares Outstanding: 65,335,675

XTEX Investable Weight Factor: 0.498479758569878

On special rebalancing dates, the new constituent will take over the index weight, as of the last trading day, of the replaced constituent. 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 MLP Infrastructure Index

The Alerian MLP Infrastructure Index, comprised of 25 energy infrastructure Master Limited Partnerships (MLPs), is a liquid, midstream-focused subset of the Alerian MLP Index (NYSE: AMZ). The index, whose constituents earn the majority of their cash flow from the transportation, storage, and processing of energy commodities, provides investors with an unbiased benchmark for the infrastructure component of this emerging asset class. The index, which is calculated using a capped, float-adjusted, capitalization-weighted methodology, is disseminated real-time on a price-return basis (NYSE: AMZI) and on a total-return basis (NYSE: AMZIX). For index values, yields, constituents, and announcements regarding rebalancings, 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

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