Zinc Falls as the Fed Hike Hits Latin American Mining Shares
Key Facts
- Nexa Resources fell 4.28% with its New York shares closing at US$12.08 on Wednesday, September 16, 2026, making it the sharpest zinc-proxy move of the session.
- Buenaventura eased 0.51% to US$33.07 on the same day, as the Peruvian gold, silver and zinc miner held up better than the pure-play zinc name.
- The Federal Reserve voted 12-0 to raise its benchmark rate by a quarter of a percentage point, a hawkish signal that 16 of 18 policymakers expect another hike in 2026, strengthening the US dollar.
- Zinc is the world’s fourth most consumed metal used primarily to galvanise steel against corrosion, tying it closely to construction, infrastructure, automotive and appliance demand.
- Peru, Bolivia and Mexico are major zinc producers and Nexa Resources operates zinc, copper, lead and silver projects across Brazil and Peru, making its New York shares a key regional proxy.
- The Lima-listed Nexa Peru share closed at PEN 4.505 on September 16, 2026, unchanged on the day but near the top of its 52-week range of PEN 1.500 to PEN 4.900.
Today’s Focus
Zinc came under pressure on Wednesday, September 16, 2026, after the Federal Reserve delivered a hawkish rate rise that lifted the US dollar and made dollar-priced metals more expensive for foreign buyers.
Nexa Resources, the Brazil and Peru-based zinc producer, saw its New York shares fall 4.28% to US$12.08, while Peruvian miner Buenaventura slipped a milder 0.51% to US$33.07.
The Fed’s 12-0 vote for a quarter-point hike, with 16 of 18 policymakers signalling another move in 2026, dampened the outlook for rate-sensitive construction and infrastructure demand that drives zinc consumption.
Zinc’s main use is galvanising steel against rust, so the metal is a direct play on global building, automotive and appliance cycles, all of which face higher financing costs.
What matters today. The Federal Reserve’s hawkish stance strengthened the dollar and pressured zinc-exposed Latin American miners, with Nexa Resources bearing the brunt of the sell-off.
01 The session in one read
Zinc-exposed Latin American miners fell on Wednesday, September 16, 2026, as markets digested the Federal Reserve’s latest rate decision. Nexa Resources, the Brazil and Peru-based zinc producer, dropped 4.28% to US$12.08 on the New York Stock Exchange.
Peruvian precious and base metals miner Buenaventura fared slightly better, easing just 0.51% to US$33.07. The gap between the two reflects Nexa’s heavier direct exposure to zinc and industrial demand, while Buenaventura’s gold and silver streams provide a buffer.
The session was driven less by zinc’s own fundamentals than by the Federal Reserve’s hawkish tilt, because 16 of 18 policymakers seeing another hike in 2026 pushed the dollar higher and squeezed emerging-market miners. Nexa Resources’ 4.28% drop to US$12.08 was far sharper than the underlying metal move, suggesting investors are pricing in higher borrowing costs and slower construction demand across Latin America’s key export markets. Watch whether the dollar extends gains after the Fed, because any further strength would likely keep pressure on Nexa, Buenaventura and other regional base-metal producers even if global galvanised-steel demand holds.
02 The board
The New York-traded shares of Nexa Resources closed at US$12.08, down 4.28% on the day, making it the weakest zinc proxy on our board. Buenaventura closed at US$33.07, off 0.51%, showing resilience as its precious metals mix cushioned the base-metal decline.
| Asset | Level | Change |
|---|---|---|
| Nexa Resources | US$12.08 | -4.28% |
| Buenaventura | US$33.07 | -0.51% |
Source: RT close, 2026-09-16. Where a commodity has no spot feed, an exchange-traded tracker or leading producer is shown as a labelled proxy.
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Latin America — Cross-Market Board
| Instrument | Last | Change | YoY | Prev. | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| IBOV | 167,921.80 | -0.75% | +19.56% | 169,186.42 | 178,526 | 175,157 | — |
| IPSA | 10,254.15 | -2.76% | — | 10,545.26 | 10,722 | 10,633 | — |
| IPC MEX | 69,779.20 | -0.01% | +12.74% | 69,787.41 | 70,008 | 69,383 | 49,372,306 |
| MERVAL | 2,848,945 | — | +12.65% | 2,859,051 | — | — | — |
| COLCAP | 2,490.92 | +0.04% | — | — | — | — | — |
| USD/BRL | 5.34 | -1.32% | -0.84% | 5.42 | 5.42 | 5.30 | — |
| EUR/BRL | 5.95 | +7.53% | -4.87% | 5.54 | 6.04 | 5.92 | — |
| USD/MXN | 18.69 | +0.62% | +1.45% | 18.57 | 18.69 | 18.54 | — |
| USD/CLP | 983.47 | -0.57% | +5.64% | 989.13 | 991.87 | 979.07 | — |
| USD/COP | 3,149 | +3.06% | -18.02% | 3,056 | 3,173 | 3,111 | — |
| USD/PEN | 3.45 | +0.17% | +3.85% | 3.44 | 3.45 | 3.44 | — |
| USD/ARS | 1,537 | -0.28% | +3.77% | 1,541 | 1,541 | 1,537 | — |
| USD/UYU | 40.21 | +3.57% | +2.29% | 38.83 | 40.21 | 40.08 | — |
| USD/PYG | 5,803 | +3.78% | -16.54% | 5,592 | 5,803 | 5,735 | — |
| USD/BOB | 11.97 | +4.93% | +77.92% | 11.41 | 11.97 | 11.82 | — |
| USD/DOP | 60.54 | +1.83% | -4.34% | 59.45 | 61.14 | 59.85 | — |
| USD/CRC | 451.24 | +2.13% | -7.80% | 441.83 | 451.40 | 450.04 | — |
| USD/GTQ | 7.64 | +3.23% | +2.18% | 7.40 | 7.64 | 7.64 | — |
03 What moved it
The Federal Reserve voted 12-0 to raise its benchmark rate by a quarter of a percentage point, and 16 of 18 policymakers projected another hike in 2026. That hawkish message pushed the US dollar higher, which makes dollar-denominated metals more expensive for buyers using other currencies.
Zinc is the world’s fourth most consumed metal, used mainly to galvanise steel against corrosion. Higher interest rates raise financing costs for construction, infrastructure and automotive projects, so the demand outlook for galvanised steel softened just as the dollar strengthened.
04 The Latin American read
Peru, Bolivia and Mexico are major zinc-producing countries, and the region’s miners feel the double hit of a stronger dollar and softer industrial demand expectations. Nexa Resources runs zinc, copper, lead and silver operations across Brazil and Peru, making it a bellwether for this trade.
The company’s Lima-listed shares, Nexa Resources Peru, closed at PEN 4.505 on September 16, 2026, unchanged on the day but near the top of a 52-week range of PEN 1.500 to PEN 4.900. The contrast with the 4.28% fall in the New York line suggests local investors are holding steadier despite the Fed shock.
Buenaventura’s modest 0.51% decline to US$33.07 underscores how Peruvian miners with meaningful gold and silver output can insulate investors from pure industrial metal weakness.
05 The names to watch
Nexa Resources is the clearest Latin American zinc proxy, and its New York shares at US$12.08 reflect the market’s view on regional base-metal producers. The stock’s sharp reaction to the Fed shows how sensitive zinc names are to US rate policy.
Buenaventura offers a more balanced exposure, with gold, silver and base metals including zinc across multiple Peruvian mines. At US$33.07, its smaller decline signals that precious metals diversity can soften zinc-specific shocks.
06 The outlook
The near-term direction for zinc-exposed LatAm miners hinges on the dollar’s follow-through after the Fed’s hawkish move. If 16 of 18 policymakers continue signalling another hike in 2026, financing costs for construction and galvanised steel demand are likely to stay under pressure.
Investors should monitor regional smelting and export margins in Peru, Bolivia and Mexico, because a sustained dollar rally could erode returns even for producers with solid output. Nexa Resources and Buenaventura will remain the clearest equity proxies for that story.
07 What to watch
- Federal Reserve policy: The 12-0 vote for a quarter-point hike and forward guidance are the main drivers for zinc demand and the dollar.
- Nexa Resources shares: The 4.28% drop to US$12.08 signals investor anxiety about industrial metals; watch whether it stabilises or extends.
- Buenaventura resilience: Its 0.51% decline to US$33.07 shows the value of precious metals diversification when base metals fall.
- Dollar trajectory: Any further dollar strength would pressure zinc, galvanised steel economics and Latin American mining shares.
Frequently Asked Questions
Why did Nexa Resources fall on September 16, 2026?
Nexa fell 4.28% to US$12.08 because the Federal Reserve’s hawkish rate rise strengthened the dollar and dampened the demand outlook for zinc-intensive construction and galvanised steel.
How did Buenaventura perform?
Buenaventura slipped 0.51% to US$33.07, outperforming Nexa because its gold and silver revenues cushioned the base-metal weakness.
What is zinc used for?
Zinc is the world’s fourth most consumed metal, used mainly to galvanise steel against rust, alongside alloys and chemicals.
Why does the Fed decision matter for zinc?
Higher US interest rates lift the dollar, making metals more expensive abroad, and increase financing costs for the construction and infrastructure projects that consume galvanised steel.
Market data: RT
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief
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