Why is Capstone Copper (ASX: CSC) down ~9%?
Capstone Copper’s (CSC) ~9% fall on the ASX today is a global wide copper selloff rather than a company-specific problem, with the local listing effectively catching up to the sharp overnight decline in North American copper equities. The catalyst was a Reuters report that the White House has not yet decided whether to impose tariffs on refined copper, raising doubts over a policy theme that had helped drive copper to record highs earlier this week.
- In overnight trade Freeport McMoRan (FCX US) fell -6.6%, and Capstone (CS CN) in Canada -9.3%.
Copper had surged to around US$14,875/t on the LME on 9 September, supported by expectations that US tariffs would tighten the domestic market and redirect metal flows. That bullish positioning reversed quickly once reports suggested policymakers were becoming more cautious, particularly given concerns that higher copper prices could increase costs for US manufacturers and AI infrastructure projects.
- Comex copper fell more than 5%, while LME 3-month copper dropped around US$640/MT.
There are also a few secondary headwinds amplifying the weakness. Brent crude above US$105/bbl. is adding cost pressure for energy-intensive miners and reinforcing inflation concerns, while the broader ASX is down around 1%, with Materials among the main drags.
- Capstone Copper and the sector had become vulnerable to any bad news with the market simply caught “long” the “hot” space.
We believe this selloff has been caused by a sudden loss of conviction in the US copper tariff trade, rather than a deterioration in Capstone’s underlying operations. The near-term direction will now depend heavily on whether Washington ultimately proceeds with meaningful tariffs and whether copper can stabilise after such an extended rally.
- We continue to like the “Copper Trade” but there’s no reason to add to current exposure after last night’s reality check.
Longer term, the structural copper story around electrification, grid investment and AI-related power demand remains intact, but in the short term the market is being reminded how much speculative enthusiasm had become embedded in the price.
