SOPA Images/LightRocket via Getty Images MPLX (NYSE:MPLX) is one of the few midstream operators with the unique known buyer of throughput with parent Marathon Petroleum Corp. (MPC) purchasing 82% of crude throughput and 95% of refined products transported from well to refinery. With strong production in the Permian Basin and stable maintenance production in the Appalachia region, MPLX has remained in a strong position for both stability and growth for both in-basin midstream services and transportation. I b ...