Following the close of business on Dec. 19, Enable Midstream Partners LP will be added to the Alerian MLP Index and the Alerian MLP Equal Weight Index, Alerian announced on Dec. 12.

Enable Midstream Partners owns, operates and develops gas and crude oil infrastructure assets. Exterran Partners LP will be removed from the two indices following close of business on the same day.

The 50 constituents of the Alerian MLP Index will be rebalanced on a float-adjusted, capitalization-weighted basis in line with the existing index methodology, as will the 50 constituents of the Alerian MLP Equal Weight Index.