Market SignalsFCX
Three Copper Miners Trading at the Wrong Side of the Cycle
Freeport, Rio Tinto, and BHP are priced as if the copper cycle has peaked. Capex trajectories, supply deficits, and electrification demand say the opposite.
Apr 20, 2026
Four Copper Signals the Market Is Ignoring at Freeport-McMoRan
Grasberg's ramp-down, the Chinese smelter rebellion, the Grasberg Block Cave transition, and hyperscaler copper demand. Four signals, one direction.
April 15, 2026
3 min read
Copper Is Moving from Cycle to Structural
Copper spot prices crossed $4.80 per pound in 2025 and have held above $4.50. The consensus view is that this is late-cycle peaking. The Signals Desk view is that four underlying signals point to structural tightness running into 2028, and Freeport-McMoRan is the cleanest US-listed exposure to the trade.
1. Grasberg's Production Plateau
Freeport's Grasberg mine is the single largest copper and gold asset on earth. The pit-to-underground transition completed in 2021 left the mine producing roughly 1.5 billion pounds of copper annually. The next step up in production requires completion of the Block Cave expansion, scheduled for 2026 to 2028. Until then, Grasberg's output is effectively capped.
That matters for the global supply curve. Grasberg represents approximately 3% of global mined copper. A flat output profile through 2027 removes what the market had modelled as incremental supply.
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Grasberg Copper Production (Million Pounds)
2. The Chinese Smelter Rebellion
Chinese copper smelters collectively account for roughly 45% of global refining capacity. Treatment and refining charges (TC/RCs) collapsed below $10 per tonne in 2024, the lowest in two decades, because concentrate supply was insufficient to feed the installed smelter base.
Smelters responded by announcing production cuts. Several major Chinese smelters idled capacity for maintenance in 2024 and 2025. That is a signal that concentrate demand exceeds supply at current spot prices. It is also a signal that further concentrate price inflation is ahead.
3. The Block Cave Ramp Timeline
Freeport's long-term production growth is tied to the Grasberg Block Cave expansion, the Bagdad concentrator upgrade, and the El Abra expansion. Together, these projects add roughly 800 million pounds per year when fully ramped, a 15% uplift on current production.
The ramp is back-end loaded. Most of the incremental volume comes in 2027 and 2028. Near-term production remains constrained, which is bullish for copper prices and for Freeport's realised margin per pound.
Freeport Total Copper Production Guidance (Million Pounds)
4. Hyperscaler Copper Demand
AI data centres are copper-intensive in a way the market has not fully modelled. A typical hyperscale data centre uses roughly 20 to 30 tonnes of copper per megawatt of capacity. At an estimated 80 GW of AI-specific data centre build-out through 2028, the implied copper demand is 1.6 to 2.4 million tonnes, or roughly 8 to 12% of annual global copper supply.
Layer on EV adoption, grid modernisation, and renewable build-out, and the demand curve has no slack.
Global Copper Deficit/Surplus Estimate (Thousand Tonnes)
Freeport Is Our Preferred Exposure
At current prices, Freeport trades at roughly 7.5x EV/EBITDA on 2026 estimates using $4.50 copper. On $5.00 copper, the stock trades at 6x. On $5.50 (a plausible 2027 print given the deficit), it trades at 5x.
The Signals Desk is buyers of Freeport on the structural copper thesis. Fair value on $5.00 copper assumptions is approximately $58. Upside to $65 if the deficit widens as expected. Downside to $38 if copper retraces to $4.
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