SUN vs WKC: 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: WKC 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. SUN and WKC 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 SUN and WKC 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.

Sunoco LP moves fuel. The partnership is the largest independent fuel distributor in the Americas, selling roughly 4.1 billion gallons in the second quarter of 2026 at a margin near 17.1 cents per gallon, and it now sits on top of a midstream network of pipelines and terminals plus a refinery picked up with the ~$9.1 billion Parkland acquisition that closed on October 31, 2025. Four reporting segments carry the business: Fuel Distribution (~$504 million of adjusted EBITDA in the quarter), Pipeline Systems (~$190 million on ~1.3 million barrels per day of throughput), Terminals (~$115 million on ~1.1 million barrels per day) and the new Refinery segment (~$175 million on ~57,000 barrels per day at Burnaby, British Columbia). Trailing twelve-month revenue runs near ~$39.6 billion against a market value of roughly ~$14.3 billion, the arithmetic of a business that turns enormous volumes of low-margin product.

Full SUN guide

World Kinect buys fuel and sells it, at scale, in places where buying it directly is a nuisance. The company runs three segments: Aviation, which fuels commercial airlines, business jets and government fleets through a network of airports and FBOs; Marine, which supplies bunker fuel to shipping fleets at ports worldwide; and Land, which covers commercial and industrial fuel delivery, cardlock networks, retail fuel sites, and the supply of natural gas and power in the US and Europe. Layered on top is a services business: price risk management, energy procurement contracts, emissions reporting and sustainability advisory. The name changed from World Fuel Services to World Kinect in June 2023 to signal that the company sells more than diesel and jet fuel, though fuel logistics is still where nearly all the money is made.

Full WKC guide

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

• SUN drivers: Parkland converts a distributor into an integrated fuel system; The distribution is the reason most unitholders are here.
• WKC drivers: Gross profit is the top line that matters; Aviation carries the earnings.

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: Fuel distribution earns cents on the gallon, so a compression in rack-to-retail spreads or a mild-weather demand quarter reaches the bottom line quickly. For WKC, the most obvious risk is that 2026 is the good year.

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 SUN if you believe its drivers more; WKC 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 SUN and WKC guides.

SUN. Valuation for an MLP is usually framed on distributable cash flow and enterprise value to EBITDA rather than on a price-to-earnings multiple, because depreciation on pipelines and terminals understates cash generation and net income swings with acquisition accounting. Second-quarter net income of ~$283 million against ~$608 million of adjusted distributable cash flow shows that gap plainly. Market capitalisation of roughly ~$14.3 billion covers both the ~136.9 million common units and the ~51.5 million Class D units, and the enterprise value including debt sits well above it.

WKC. At roughly ~$35 against guided adjusted EPS of ~$3.20 to ~$3.40, WKC trades near ~11x this year's expected adjusted earnings, which is where the market prices a business it does not expect to repeat the year. GAAP earnings tell a rougher story because of divestiture charges, so the gap between the two figures is worth checking directly in the filings rather than trusting a single screener field. The share count is the quieter variable: ~51.2M shares at the end of June versus ~54.1M six months earlier means per-share figures improve even if total gross profit merely holds.

Headline figures (approximate, August 2026): SUN shows revenue (ttm) ~$39.6 billion, adjusted ebitda (q2 2026) ~$982 million, versus ~$454 million a year earlier, 2026 adjusted ebitda guidance ~$3.5 billion to ~$3.7 billion (raised by ~$400 million), distributable cash flow, as adjusted (q2 2026) ~$608 million; WKC shows revenue (ttm) ~$41.7B, gross profit (ttm) ~$1.1B, under ~3% of revenue, market cap ~$1.81B, share price ~$35.38.

SUN and WKC 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 SUN and WKC exposure against your real portfolio. It is not an investment adviser.