Just noticed something interesting about Ero Copper that's worth digging into. This mining play has absolutely crushed it over the past year – up 135% while the broader mining sector gained around 91%. That's not just outperforming, that's legitimately standing out.

What caught my eye is the operational story behind the numbers. Ero delivered record copper production in Q4 2025, hitting nearly 20,000 tons of concentrate. Their established Caraíba operations pumped out over 10,000 tons, but here's the kicker – the newer Tucumã operation, which only hit commercial production mid-2025, already contributed 9,275 tons. The throughput jumped roughly 22% quarter-over-quarter there, which suggests the ramp-up is executing cleanly.

On the financial side, the liquidity picture is solid. They ended Q3 with $66 million in cash – a 230% year-over-year jump – plus another $45 million in undrawn credit. Total liquidity sitting around $111 million gives them real flexibility. More importantly, cash generation is flowing. Operating cash hit $110 million last quarter (up from $53 million prior year), translating to $34 million in free cash flow. That's the kind of cash generation that funds growth without balance sheet strain.

The growth thesis is pretty clear. Ero's betting on their Brazilian asset base becoming a higher-output, longer-life platform. Beyond ramping Tucumã, they're investing in underground development at Caraíba, mechanizing operations at Xavantina, and pushing forward on the Furnas project for additional copper and gold potential. This isn't just one-off production – it's a systematic expansion.

Valuation-wise, ERO is trading at 3.09X forward earnings, which is actually below the mining peer average of 5.32X. Compare that to Freeport at 3.29X and Southern Copper at 11.23X, and you're looking at reasonable pricing for what the company is delivering.

Earnings estimates back this up. 2025 consensus is $2.13 per share (173% growth), and 2026 is tracking at $4.29 (101% growth). That's meaningful expansion, and the stock's still not pricing in the full upside.

The setup here is pretty straightforward – solid operational execution, improving cash generation, room to run on valuation, and visible growth catalysts through 2027. If you're looking for copper exposure with actual operational momentum, Ero Copper deserves a closer look.