Southern Copper (SCCO) Weighs $680 Million Cuajone Mine Expansion

• Southern Copper (NYSE:SCCO) is weighing a proposed US$680 million expansion of its Cuajone copper operation in Peru.
• The potential project targets declining ore grades at Cuajone by substantially increasing milling capacity and updating processing infrastructure.
• Management has not yet announced a final investment decision or detailed construction timetable for the possible mine upgrade.
• The Cuajone expansion talks are part of a larger story about how Southern Copper is repositioning its asset base and capital spending plans. We have also spotted 1 warning sign worth knowing about at Southern Copper.

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Southern Copper runs a broad copper mining and processing network across the Americas, so a potential Cuajone upgrade in Peru sits within a much larger portfolio of extraction, smelting, and refining assets that management can weigh against other long life projects.

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How does the Cuajone plan fit Southern Copper’s current performance?

The proposed US$680 million Cuajone expansion lands just after Southern Copper reported Q3 2026 sales of US$4,696.6 million and net income of US$1,801.8 million. Recent earnings, plus a US$1.30 quarterly dividend authorized on October 15, 2026, show the group currently generating sizeable cash that could potentially support large projects.

Does the Cuajone news change the Southern Copper Narrative?

The expansion review goes straight to a core Narrative issue, which is whether Southern Copper can use a multi year capex plan to manage lower ore grades while still executing on Peru and Mexico projects. Cuajone directly addresses grade pressure, but also adds to the more than US$20.5b investment load that bearish views already see as fully reflected in expectations.

See how these catalysts shape Southern Copper's path to a $175 fair value.

What should investors watch next on Cuajone and execution risk?

The clearest tell will be a formal investment decision that sets a firm budget and schedule for lifting Cuajone milling from 90,000 to 120,000 tonnes per day or more. Any disclosed timing for when extra throughput starts contributing to reported copper output will be a key check on whether this upgrade is tracking to plan.

The Southern Copper clue most holders skip over

There is a quiet checklist item that rarely gets airtime: what a detailed estimate of the business value implied by its own cash generation looks like next to today’s share price. Find out exactly what Southern Copper is worth today based on its cash flows.

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