Marathon Petroleum Corporation vs Phillips 66: Strategic Comparison

This in-depth comparison examines Marathon Petroleum Corporation and Phillips 66 across revenue, market value, business model, competitive positioning, and long-term growth strategy. Whether you are researching Marathon Petroleum Corporation on its own, evaluating Phillips 66, or weighing the two companies side by side, the breakdown below highlights where each company leads and where the gap between Marathon Petroleum Corporation and Phillips 66 is widest.

On the headline numbers, annual revenue is $132.7B (FY2025) for Marathon Petroleum Corporation and $132.4B (FY2025) for Phillips 66, while their respective market capitalizations stand at $110.0B and $109.4B. Both Marathon Petroleum Corporation and Phillips 66 are headquartered in United States. Their local markets and applicable rules may still differ.

Marathon Petroleum Corporation: Marathon Petroleum is an independent downstream company: it does not drill for oil. It buys crude, refines it into transportation fuels and other products at 13 refineries in the Gulf Coast, Mid-Continent and West Coast regions, and moves those products through pipelines and terminals largely owned by MPLX. Headquartered in Findlay, Ohio, it employed about 18,200 people at the end of 2025.

Phillips 66: Phillips 66 is a downstream and midstream company: it does not drill for oil. It processes crude in refineries in the United States and at Humber in the UK, moves and fractionates NGLs, earns equity income from CPChem, and supplies branded fuel to retail sites. FY2025 sales were $132.376 billion and the company had about 12,600 employees at year-end 2025. The company is headquartered in Houston, Texas. Phillips 66 traces its origins to Phillips Petroleum Company founded in 1917 in Bartlesville, Oklahoma, by Frank and L.E. Phillips, before spinning off from ConocoPhillips in May 2012 to create an independent downstream energy and refining giant headquartered in Houston, Texas.

Marathon Petroleum Corporation and Phillips 66 pursue distinct approaches to generating revenue, and understanding how each company operates is the foundation of any fair comparison between Marathon Petroleum Corporation and Phillips 66.

Marathon Petroleum Corporation business model: Marathon Petroleum makes money in three reported segments. Refining & Marketing, the largest, buys crude oil and other feedstocks, processes them in 13 refineries (about 3.0 million barrels per calendar day) and sells gasoline, distillates, asphalt and petrochemical feedstocks to wholesale buyers, branded Marathon and ARCO dealers, exporters and industrial customers; profits track the crack spread between crude and product prices. Midstream, conducted mainly through MPLX LP, earns largely fee-based income from pipelines, terminals, storage, gas gathering and processing, and NGL fractionation, and pays MPC a growing cash distribution. Renewable Diesel covers the Dickinson, North Dakota plant and the Martinez Renewables joint venture with Neste. MPC sold its Speedway convenience stores to 7-Eleven in May 2021, so it no longer runs a large company-owned retail chain but supplies branded independent stations.

Phillips 66 business model: Phillips 66 earns money in five reported areas. Refining turns crude into gasoline, diesel and jet fuel, and profits depend on crack spreads and utilization. Midstream gathers, processes, transports, fractionates and exports natural gas liquids, earning largely fee-based income. Chemicals is a 50% equity stake in Chevron Phillips Chemical (CPChem). Marketing and Specialties sells branded fuels to independent dealers and makes lubricants and specialty products. Renewable Fuels runs the converted Rodeo facility in California.

The durability of a company's moat often decides long-term winners. Here is how the competitive advantages of Marathon Petroleum Corporation stack up against those of Phillips 66.

Marathon Petroleum Corporation competitive advantage: MPC's edge is scale and integration. Its 13 refineries give it the largest US crude capacity, coastal plants such as Garyville and Galveston Bay can run discounted heavy and sour crudes and export products, and new US refinery construction is rare (Garyville, started up in 1976, is often cited as the last large grassroots refinery built in the country). MPLX adds a fee-based cash stream and logistics control that pure-play refiners such as Valero and PBF lack, and its distributions to MPC help fund the parent's dividend.

Phillips 66 competitive advantage: Phillips 66 combines refining, NGL midstream, chemicals and fuel marketing in one portfolio, so weak results in one segment can be cushioned by others. Its Midstream business includes Permian gas plants, Gulf Coast fractionators and LPG export capacity, and full ownership of the Wood River and Borger refineries since 2025 lets it capture more value from Canadian and Mid-Continent crude.

Future prospects matter as much as current results. The growth strategies below explain how Marathon Petroleum Corporation and Phillips 66 each plan to expand from here.

Marathon Petroleum Corporation growth strategy: MPC's strategy is to run its existing refineries harder and more efficiently rather than buy new ones: high-return yield projects such as those at El Paso and Robinson, crude sourcing optimization, and cost control. Growth capital is weighted toward MPLX's Permian and Marcellus natural gas and NGL infrastructure, which raises distributions to MPC. Remaining free cash flow goes to dividends and share repurchases. Renewable fuels are a smaller bet through Dickinson and the Martinez Renewables joint venture with Neste.

Phillips 66 growth strategy: Phillips 66 is growing mainly through Midstream NGL infrastructure: the 2025 Coastal Bend (EPIC NGL) acquisition, the Dos Picos II gas plant, the planned Zeus plant and a new Coastal Bend fractionator. In refining it consolidated ownership of WRB Refining while selling most of its European retail business and closing its Los Angeles refinery. CPChem's two large polymer projects add chemicals growth from 2027.

A closer look at the financial trajectory of Marathon Petroleum Corporation and Phillips 66 rounds out the comparison.

Marathon Petroleum Corporation: MPC's financials are cyclical. Revenue peaked at $177.5 billion in 2022 and declined to $132.7 billion in 2025, while net income attributable to MPC moved from $14.5 billion (2022) to $3.4 billion (2024) and $4.0 billion (2025). In 2025 the company generated $8.3 billion of operating cash flow, about $12.0 billion of adjusted EBITDA and returned $4.5 billion to shareholders. The cycle turned sharply in 2026: Q2 2026 net income attributable to MPC was $5.1 billion ($17.73 per diluted share), adjusted EBITDA was $8.5 billion and $2.8 billion was returned through dividends and buybacks. Marathon Petroleum Corporation is one of the absolute largest petroleum refining companies in the United States, sustaining a market valuation generally exceeding $70 billion.

Phillips 66: Phillips 66 revenue swings with commodity prices: sales were $169.99 billion in 2022, $147.40 billion in 2023, $143.15 billion in 2024 and $132.38 billion in 2025. Net income attributable to the company rose to $4.403 billion in 2025 from $2.117 billion in 2024. Results turned sharply in 2026: first-quarter earnings were $207 million, then second-quarter earnings reached $3.847 billion ($9.55 per diluted share) with adjusted EBITDA of $5.891 billion on stronger refining margins. Total debt fell by $6.6 billion in the second quarter to $20.6 billion. Phillips 66 is a monumental American multinational energy company specializing in refining, transporting, and marketing petroleum products, commanding a market valuation typically over $60 billion.