EPD vs MPLX: Which Is the Better Buy in 2026?
Last updated August 2026
Short answer
EPD is the larger of the two ($82.32B market cap): the incumbent the market prices for continued execution (12.12x forward earnings, beta 0.47). MPLX is the smaller challenger ($59.31B), priced similarly on forward earnings (12.00x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
EPD vs MPLX: the tie-breaker metrics
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.
| Metric | EPD | MPLX | What it tells you |
|---|---|---|---|
| Market cap | $82.32B | $59.31B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 12.12 | 12.00 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Trailing P/E | 13.17 | 12.65 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 0.47 | 0.45 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 79% of range | 87% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 2.79 | 4.22 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Before you buy: how EPD and MPLX affect your concentration
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. EPD and MPLX 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 EPD and MPLX 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.
What does Enterprise Products Partners (EPD) do?
Enterprise Products Partners operates one of the most integrated midstream systems in North America, with tens of thousands of miles of pipelines plus storage, natural gas processing, NGL fractionation, and marine export terminals along the Gulf Coast. The bulk of its cash flow is fee-based, meaning it earns fees for moving and handling volumes rather than taking direct commodity price bets, which historically has produced more stable cash flow than producers. In the first quarter of 2026 the partnership reported record NGL fractionation volumes of about 1.9 million barrels per day and roughly 2.7 billion dollars of EBITDA, up about 10 percent year over year, helped by newly commissioned assets such as the Bahia NGL pipeline and the Neches River export terminal.
What does MPLX LP (MPLX) do?
MPLX LP is one of the largest midstream energy master limited partnerships in the United States, sponsored by and closely tied to Marathon Petroleum Corporation, which owns a large majority of its units. It owns and operates energy infrastructure and logistics assets and provides fuels-distribution services, reporting through two segments: Crude Oil and Products Logistics, and Natural Gas and NGL Services. The first segment covers pipelines, storage, terminals, and marine assets that move and store crude oil and refined products; the second covers gathering, processing, and fractionation of natural gas and natural gas liquids. Because most of its revenue comes from long-term, fee-based contracts, MPLX's cash flows are relatively stable and less directly exposed to swings in commodity prices than a producer would be.
EPD vs MPLX: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- EPD drivers: A 27-year distribution-growth streak; Fee-based, volume-driven cash flow.
- MPLX drivers: Distribution and coverage; Fee-based, contracted cash flows.
Which fits which kind of investor
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: EPD's volumes and some margins are still tied to commodity production and global energy demand, so a sustained downturn in oil, natural gas, or NGL activity could pressure cash flow. For MPLX, the main risks are those of a capital-intensive energy-infrastructure partnership.
EPD or MPLX: which should you pick?
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 EPD if you believe its drivers more; MPLX 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 EPD and MPLX guides.
EPD vs MPLX: the full fundamentals
EPD. EPD is typically held as an income holding rather than a high-growth one, so investors tend to weigh distribution coverage, leverage, and yield more than earnings multiples. Because it is an MLP, total return blends the cash distribution with modest growth from new projects. Figures are approximate, reflect data around Q1 2026 and mid-2026 unit prices, and move with the market.
MPLX. All figures are approximate, tied to the asOf date, and drawn from company disclosures and secondary sources; verify live numbers before acting. For a midstream MLP, the most useful lenses are distribution yield, distribution growth, and distribution coverage rather than a simple earnings multiple, because much of the reported income is non-cash depreciation-heavy. The K-1 tax treatment matters as much as the headline yield for after-tax outcomes, so consider consulting a tax professional about holding an MLP, especially inside a retirement account.
Headline figures (approximate, 2026-06-26): EPD shows revenue (ttm) ~$51.6 billion, q1 2026 distributable cash flow coverage ~1.8x, distribution yield ~5.8% to 6.1%, annualized distribution per unit ~$2.20; MPLX shows distribution Large quarterly cash distribution, recently raised at a double-digit annual pace; verify the latest declared amount and yield, distribution coverage Reported comfortably above one times (roughly ~1.3x in a recent quarter), meaning cash flow more than covered the payout, segment ebitda Both Crude Oil and Products Logistics and Natural Gas and NGL Services contribute roughly a billion-dollar-scale adjusted EBITDA per quarter each, distributable cash flow Reported in the low-single-digit billions per quarter, the key metric backing the distribution.
The bottom line: EPD vs MPLX
EPD and MPLX 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 EPD and MPLX exposure against your real portfolio. It is not an investment adviser.
Wondering how EPD or MPLX fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in Enterprise Products Partners with AI
Connect the broker you already use and ask Walnut's AI how EPD fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between EPD and MPLX?
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Enterprise Products Partners operates one of the most integrated midstream systems in North America, with tens of thousands of miles of pipelines plus storage, natural gas processing, NGL fractionation, and marine export terminals along the Gulf Coast. MPLX LP is one of the largest midstream energy master limited partnerships in the United States, sponsored by and closely tied to Marathon Petroleum Corporation, which owns a large majority of its units. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is EPD or MPLX the better stock?
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Neither is universally better. EPD is the larger incumbent; MPLX is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, EPD or MPLX?
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On forward P/E (as of August 2026), EPD trades at 12.12x and MPLX at 12.00x, so MPLX is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both EPD and MPLX?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of EPD vs MPLX?
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EPD: EPD's volumes and some margins are still tied to commodity production and global energy demand, so a sustained downturn in oil, natural gas, or NGL activity could pressure cash flow. As an MLP it issues a Schedule K-1, which adds tax complexity, can complicate holding units inside retirement accounts due to unrelated business taxable income, and may not suit every investor. High-yield midstream units can also be sensitive to interest rates, since income investors compare the yield to bonds. Over the long term, the energy transition toward lower-carbon sources is a structural uncertainty for fossil-fuel infrastructure demand. MPLX: The main risks are those of a capital-intensive energy-infrastructure partnership. Although fee-based contracts cushion commodity swings, MPLX's volumes and growth still depend on energy demand, drilling activity, and the health of its customers, so a sustained downturn can pressure cash flow. Its heavy reliance on Marathon Petroleum is both a strength and a concentration risk, tying MPLX's fortunes to a single sponsor and customer. As a leveraged, distribution-paying entity, it carries meaningful debt and is sensitive to interest rates and refinancing conditions. Regulatory, permitting, environmental, and pipeline-safety issues can raise costs or delay projects. Finally, the K-1 tax structure adds complexity: it can create unrelated business taxable income in retirement accounts and complicates filing, and any change to MLP tax treatment would affect the whole sector. Distributions are not guaranteed and can be cut.
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Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell EPD or MPLX; figures are approximate and dated (as of August 2026). Verify current data before investing.