The latest trading session saw MPLX LP (MPLX) ending at $42.43, denoting a -0.49% adjustment from its last day's close. This change lagged the S&P 500's daily loss of 0.16%. Elsewhere, the Dow gained 0.09%, while the tech-heavy Nasdaq lost 0.3%.Prior to today's trading, shares of the company had gained 2.45% over the past month. This has outpaced the Oils-Energy sector's gain of 0.93% and lagged the S&P 500's gain of 3.64% in that time.The investment community will be closely monitoring the performance of M ...