Black Stone Minerals will join the Alerian MLP Index and the Alerian MLP Equal Weight Index, replacing MarkWest Energy Partners (MWE) in a special rebalancing, Alerian said Nov. 30.

Pending unitholder approval, MWE will stop trading on the New York Stock Exchange due to its merger with MPLX. If approved, the rebalancing will take place one full trading session after a press release is issued indicating all needed merger votes have passed. The 50 constituents of the index will be rebalanced on a float-adjusted, capitalization-weighted basis in accordance with the existing index methodology.

Black Stone Minerals LP is based in Houston.