Zinc extended gains on Friday, September 18, 2026, as the three-month London Metal Exchange contract closed at US$3,920 a tonne, up 0.99%, driven by tight mined ore supply and steady demand for galvanised steel used in construction applications. Latin American zinc producers posted divergent results. Nexa Resources, which operates mines and smelters in Peru and Brazil, gained 0.70% to close at US$13.01, while Buenaventura, a Peruvian producer with zinc exposure alongside precious metals, declined 1.09% to US$34.33.
The mixed performance highlights how regional proxies do not track the underlying metal price tick for tick. According to The Rio Times, the price rebound appears structural rather than speculative, anchored in a physical shortage of mined concentrate. Smelters are competing aggressively for scarce ore feed, which supports prices even amid broader market volatility.
The key variable remains any potential restart of idled mine capacity or sudden increase in concentrate exports from Peru and Mexico, which would ease the supply squeeze and test the current rally. Peruvian output is particularly significant as the country ranks as the world's second-largest zinc producer, making its mining activity central to global supply dynamics. Mexico and Bolivia, both top-ten global producers, add additional regional influence on international zinc markets.
The demand side reflects resilience in the construction sector. Galvanised steel, which accounts for zinc's largest industrial application through protective coatings, continues to drive consumption. This steady demand from construction and infrastructure spending provides a structural floor for prices according to the analysis.
Nexa Resources is positioned as the most direct play on zinc strength given its integrated model spanning both mining in Peru and Brazil alongside smelting operations. This upstream-to-midstream exposure allows the company to benefit from tight concentrate margins when ore availability is constrained. Buenaventura's diversified portfolio across zinc and precious metals means single-commodity strength does not fully translate to stock performance.
Source: The Rio Times, September 18-21, 2026
Source: riotimesonline.com