• Alerian MLP Infrastructure Index

    The Alerian MLP Infrastructure Index is a composite of energy infrastructure Master Limited Partnerships (MLPs). The capped, float-adjusted, capitalization-weighted index, whose constituents earn the majority of their cash flow from midstream activities involving energy commodities, is disseminated real-time on a price-return basis (AMZI) and on a total-return basis (AMZIX).


    Index Characteristics

    Index Symbol (Price Return)AMZI
    Index Symbol (Total Return)AMZIX
    Number of Constituents20
    Market Capitalization$218 billion
    Adjusted Market Capitalization$124 billion
    RebalancingsQuarterly

    Index Yield

    Top 10 Constituents

    ConstituentsSectorTickerPriceYieldMarket Cap (M)Index Weight
    Enterprise Products Partners LPPipeline Transportation | Natural GasEPD$26.726.6%$58,32110.7%
    Magellan Midstream Partners LPPipeline Transportation | PetroleumMMP$60.166.7%$13,74110.3%
    MPLX LPGathering & Processing MPLX$24.7110.6%$26,88910.0%
    Energy Transfer LPPipeline Transportation | Natural GasET$11.7910.4%$30,8869.8%
    Plains All American Pipeline LPPipeline Transportation | PetroleumPAA$17.568.2%$14,0119.3%
    Western Midstream Partners LPGathering & Processing WES$18.5713.1%$8,4126.1%
    Phillips 66 Partners LPPipeline Transportation | PetroleumPSXP$55.746.1%$7,7235.3%
    Tallgrass Energy LPPipeline Transportation | PetroleumTGE$18.3911.5%$5,1744.9%
    NuStar Energy LPPipeline Transportation | PetroleumNS$28.168.5%$3,6894.7%
    Shell Midstream Partners LPPipeline Transportation | PetroleumSHLX$20.098.3%$4,4964.2%

    Sector Weightings


    The accuracy and/or completeness of any Alerian index, any data included therein, or any data from which it is based is not guaranteed by Alerian, and it shall have no liability for any errors, omissions, or interruptions therein. Alerian makes no warranties, express or implied, as to results to be obtained from use of information provided by Alerian and used in this service, and Alerian expressly disclaims all warranties of suitability with respect thereto. The Alerian MLP Infrastructure Index is the exclusive property of Alerian, which has contracted with Standard & Poors ("S&P") to maintain and calculate the Index. S&P shall have no liability for any errors or omissions in calculating the Index.

    Last Updated: 12/06/19

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