GGB vs STLD: 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: GGB 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. GGB and STLD 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 GGB and STLD 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.

Gerdau S.A. is Brazil's largest steel producer and one of the biggest long-steel and special-steel makers in the Americas. It operates through three main segments: Brazil, North America (the United States, Canada, and Mexico), and South America (Argentina, Peru, and Uruguay), and it relies heavily on electric-arc mini-mills that recycle scrap into rebar, wire rod, merchant bars, and special steels used in construction, autos, and industry. The company also runs a Gerdau Next division targeting businesses adjacent to steel, and produces some iron ore and flat steel for its own use in Brazil.

Full GGB guide

Steel Dynamics is a Fort Wayne, Indiana based steel producer and metals recycler, one of the largest in the United States. It makes steel almost entirely through electric arc furnaces (EAFs), which melt scrap rather than iron ore, a lower-cost and lower-emission model than traditional blast furnaces. The company operates across three legs: steel operations (flat-rolled, long products, and specialty shapes), metals recycling through its OmniSource network that feeds scrap into the mills, and steel fabrication (joists and decking). In 2025 it added a fourth leg by starting up a $2.7 billion aluminum flat-rolled mill in Columbus, Mississippi, aimed at the beverage-can and automotive markets.

Full STLD guide

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

• GGB drivers: North America strength; Capital investment and modernization.
• STLD drivers: Low-cost EAF steel operations; Aluminum expansion into can and auto sheet.

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: Steel is deeply cyclical, so revenue and profit can fall sharply when construction and industrial demand slow or when steel prices decline. For STLD, the biggest risk is cyclicality: steel and aluminum prices swing with construction, autos, and the broader economy, and a downturn can compress the price-to-scrap spread that drives profits.

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 GGB if you believe its drivers more; STLD 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 GGB and STLD guides.

GGB. Gerdau's trailing P/E near 23 is inflated by the fourth-quarter 2025 loss; on forward estimates it drops to about 8, a cyclical-value multiple that assumes analysts' expected recovery in 2026 earnings holds. The shares trade just under book value. Third-quarter results are due October 26, 2026, with consensus EPS near R$1.00 on about R$18.6 billion of revenue. Reported figures move with steel prices and the real, so trailing metrics can shift quickly across quarters.

STLD. Steel Dynamics generated about $18.2 billion of net sales and $1.2 billion of net income in 2025, and the 2026 rebound has lifted trailing earnings to ~$1.61 billion. At roughly ~$35 billion of market value the shares trade around 22 times trailing earnings but only about 11 to 12 times 2027 consensus, a gap that only holds if steel spreads stay firm. Third-quarter results arrive October 19, 2026 with consensus near ~$5.40 per share.

Headline figures (approximate, October 2026): GGB shows revenue (ttm) ~R$69.5 billion; Q2 2026 ~R$17.9 billion, up ~2% YoY, net income (ttm) ~R$2.2 billion; Q2 2026 ~R$1.45 billion, adjusted ebitda (q2 2026) ~R$3.4 billion, best since Q3 2023, margins (ttm) ~13% gross, ~13% operating, ~3% net; STLD shows revenue (ttm) ~$20.5B, up ~33% year over year in Q2 2026, margins ~14.7% gross, ~11.5% operating, ~7.8% net, net income (ttm) ~$1.61B, trailing EPS of ~$11.03, q2 2026 results ~$6.09B revenue, ~$534M net income, EPS ~$3.69 vs ~$3.67 expected.

GGB and STLD 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 GGB and STLD exposure against your real portfolio. It is not an investment adviser.