Texas Pacific Land (TPL), an S&P MidCap 400 constituent, will join the S&P 500, replacing Marathon Oil (MRO), S&P Dow Jones Indices said late Thursday.

Meanwhile, S&P SmallCap 600 constituent Mueller Industries (MLI) will replace Texas Pacific Land in the S&P MidCap 400.

In addition, Atlas Energy Solutions (AESI) is to replace Mueller Industries in the S&P SmallCap 600, effective prior to the opening of trading on Nov. 26, S&P Dow Jones said.

S&P 500 and 100 constituent ConocoPhillips (COP) is acquiring Marathon Oil in a deal expected to close Friday.

Texas Pacific Land shares were up 4.6% in Thursday's after-hours activity.