CX vs VMC: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of October 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: CX 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. CX and VMC 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 CX and VMC 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.

Cemex (NYSE: CX) is a global building-materials company that makes and sells cement, ready-mix concrete, and aggregates (crushed stone, sand, and gravel), along with related urbanization and infrastructure products. It operates across five reportable segments (Mexico, the United States, Europe, the Middle East and Africa, and South, Central America and the Caribbean), with the US and Mexico together accounting for roughly 60% of 2025 revenue. The US-listed security is an ADR representing the underlying Mexican shares; the company is one of the largest cement producers in the world alongside Holcim, Heidelberg Materials, and CRH.

Full CX guide

Vulcan Materials is the largest producer of construction aggregates in the United States. Aggregates (crushed stone, sand, gravel) are the fundamental inputs to concrete, asphalt, and road base used in virtually every construction project. The business is local and economic: aggregates are heavy and expensive to transport relative to their value, so each Vulcan quarry serves a relatively local market (typically 50-100 miles depending on transport mode). This creates regional pricing power.

Full VMC guide

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

• CX drivers: US aggregates and infrastructure tilt; Margin self-help and efficiency programs.
• VMC drivers: Federal infrastructure spending; Residential and commercial construction.

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: Cemex is a deeply cyclical business whose demand swings with construction and infrastructure spending, so a downturn or higher-for-longer interest rates could pressure volumes and pricing. For VMC, construction activity is cyclical, and 2026 has shown it: revenue growth slowed to about 2.5% and several analysts cut price targets in October (RBC to $256, B.

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 CX if you believe its drivers more; VMC 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 CX and VMC guides.

CX. Cemex trades around $10.26 per ADR with a trailing P/E near 85, inflated by a fourth-quarter 2025 net loss, but a forward P/E near 11 and an EV/EBITDA of about 6.5, which point to expectations of rising earnings as efficiency programs and US aggregates flow through. The forward multiple has compressed since July because the share price fell about 19% in three months while guidance went up. Consensus for the October 26 third-quarter report is EPS near $0.21 on revenue near $4.43 billion.

VMC. Vulcan still trades at a premium to most of industrials, about 30x trailing and 25x forward earnings, for its durable pricing power, the federal infrastructure tailwind and the irreplaceable nature of aggregates reserves. That premium has compressed through 2026 (the trailing multiple was in the mid-30s early in the year) as the shares fell about 12% year to date on slow volume growth. Consensus expects third-quarter EPS of about $2.87 on $2.24 billion of revenue when Vulcan reports on October 29, 2026.

Headline figures (approximate, October 2026): CX shows revenue (ttm) ~$17.0B (Q2 2026 +12% YoY), q2 2026 revenue ~$4.59B, q2 2026 ebitda above $1B; adjusted margin ~21.4%, net income (ttm) ~$513M (Q2 2026 ~$347M); VMC shows revenue (ttm) ~$8.1 billion, up ~2.5% year over year (latest quarter), operating margin ~22% (gross ~28%, net ~14%), net income (ttm) ~$1.1 billion, eps (ttm / forward) ~$8.48 / ~$10.43.

CX and VMC 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 CX and VMC exposure against your real portfolio. It is not an investment adviser.