Shares declined 2.6% after MPLX reported softer-than-expected volume trends and margin pressures, despite ongoing capital investments and operational progress. The market appears cautious on headwinds from reduced pipeline and fractionation volumes, hedge mark-to-market losses, and elevated operating expenses.

• Crude Oil and Products Logistics segment EBITDA increased by $14 million year-over-year, helped by higher rates but offset by a 4% decline in both pipeline and terminal volumes due to refinery turnarounds.
• Gathering and Processing segment EBITDA fell $42 million year-over-year, impacted by a $45 million drag from prior year divestitures, lower NGL prices, higher operating expenses, and the absence of a one-time $37 million customer agreement benefit in 2025.
• Gathering volumes rose 10% excluding noncore divestitures, driven by continued growth in Utica and Permian regions; processing volumes increased 2%, with Marcellus utilization steady at 94%.
• Total fractionation volumes declined 3%, mainly from lower ethane recovery tied to elevated regional gas prices, while weather disruptions (Winter Storm Fern) imposed a roughly $13 million headwind.
• Hedging activities resulted in a $56 million negative mark-to-market in Q1, expected to unwind over the year, and project-related expenses anticipated to rise $50 million sequentially in Q2 due to seasonality.