Marathon Petroleum (MPC) Inventory Average (2011 - 2026)

Marathon Petroleum has disclosed Inventory Average across 16 years of filings, most recently posting $10.4 billion for Q1 2026.

• Inventory Average for Q1 2026 came in at $10.4 billion, up 4.17% year-over-year; the trailing twelve-month figure through Mar 2026 was $10.4 billion (up 4.17% YoY), and the FY2025 annual result was $9.8 billion, up 4.3% from the prior year.
• Inventory Average came in at $10.4 billion for Q1 2026 at Marathon Petroleum, up from $10.0 billion in the prior quarter.
• In the past five years, Inventory Average ranged from a high of $10.4 billion in Q1 2026 to a low of $8.8 billion in Q1 2022.
• The 5-year median for Inventory Average is $9.8 billion (2024), against an average of $9.9 billion.
• Across the five-year window, Inventory Average increased 18.77% in 2022 and dropped 5.76% in 2023, its largest moves.
• Marathon Petroleum's Inventory Average stood at $9.3 billion in 2022, then gained by 4.28% to $9.7 billion in 2023, then slipped by 0.03% to $9.7 billion in 2024, then rose by 2.59% to $10.0 billion in 2025, then advanced by 4.68% to $10.4 billion in 2026.
• The last three Inventory Average figures came in at $10.4 billion (Q1 2026), $10.0 billion (Q4 2025), and $10.0 billion (Q3 2025), per Business Quant data.