DKL vs MPC: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: MPC is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. DKL and MPC share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined DKL and MPC exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Delek Logistics Partners, LP gathers, processes, stores and moves crude oil, natural gas, produced water and refined products, mostly in the Permian Basin of West Texas and New Mexico plus assets in Tennessee, Arkansas and Texas. It reports in four pieces: gathering and processing, wholesale marketing and terminalling, storage and transportation, and its share of pipeline joint ventures. Delek US Holdings (NYSE: DK) owns the general partner interest and a majority of the limited partner units, and is also one of the partnership's larger customers, so DKL began life as a way to hold a refiner's logistics assets in a separate, income-paying vehicle. The business has been shifting since then. Recent growth has come from third-party producers in the Delaware Basin, where DKL gathers crude, gas and produced water under long-term acreage dedications, rather than from anything Delek US refines.

Full DKL guide

Marathon Petroleum Corporation (NYSE: MPC), headquartered in Findlay, Ohio, is the largest independent downstream energy company in the United States. It operates through three segments: Refining and Marketing, which refines crude oil and other feedstocks at refineries across the Gulf Coast, Mid-Continent, and West Coast and sells gasoline, diesel, jet fuel, asphalt, and other products through wholesale channels and Marathon-branded and ARCO-branded retail outlets; Midstream, conducted primarily through its publicly traded partnership MPLX, which gathers, processes, transports, and stores crude oil, natural gas, and natural gas liquids across an extensive pipeline, terminal, and storage network; and Renewable Diesel, which processes renewable feedstocks into renewable diesel for sale to wholesale customers and through long-term supply contracts. The company earns money from crude-to-products refining margins, midstream fee and distribution income from MPLX, and renewable diesel sales and associated regulatory credits.

Full MPC guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• DKL drivers: Delaware Basin volumes carry the growth; Libby and the capex-to-EBITDA conversion.
• MPC drivers: Scale Advantage in U.S. Refining; MPLX Midstream Provides a Durable Cash Floor.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The balance sheet is the first thing that would break the story. For MPC, the primary bear-case risk is crack spread compression: MPC's refining earnings are highly sensitive to the difference between crude oil input costs and refined product prices, and a normalization or decline in that spread (driven by demand softness, rising global refinery capacity coming back online, or a swift resolution of geopolitical tensions) would sharply reduce cash flows and pressure the valuation.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick DKL if you believe its drivers more; MPC if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the DKL and MPC guides.

DKL. The headline second quarter was a split result: record adjusted EBITDA of ~$143.5 million alongside net income of ~$28.9 million (~$0.54 per unit), down from ~$44.6 million (~$0.83) a year earlier, which came in under the consensus estimate. The gap between the two lines is interest and depreciation on the capital that produced the EBITDA. Valuing DKL on units and earnings per unit tends to mislead for that reason, which is why coverage ratio, leverage and EV to EBITDA are the metrics the partnership and its analysts actually argue about.

MPC. MPC's trailing earnings multiple of roughly 17x sits modestly above the oil and gas refining industry average but below many broader market benchmarks, a valuation gap that reflects the inherent cyclicality of refining margins and the capital intensity of the business. Full-year 2025 adjusted earnings per diluted share of approximately $10.70 improved from 2024's $9.51 on a per-share basis, aided by ongoing share buybacks that reduced the share count. The strong return on equity of approximately 24% reflects both profitability and the company's leveraged balance sheet.

Headline figures (approximate, August 2026): DKL shows revenue (ttm) ~$1.20B, q2 2026 adjusted ebitda ~$143.5M, a record, vs ~$127.4M a year earlier, 2026 adjusted ebitda guidance ~$520M to ~$560M, reaffirmed, distribution ~$1.135 per unit quarterly, ~$4.54 annualized, ~7.6% at a ~$60 unit price; MPC shows revenue (fy 2025) ~$132.7 billion, net income (fy 2025) ~$4.0 billion, adjusted eps (fy 2025) ~$10.70 per diluted share, trailing p/e ratio ~17x (TTM, as of early June 2026).

DKL and MPC are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined DKL and MPC exposure against your real portfolio. It is not an investment adviser.