Copper & Aluminium Market Report – August 2025

Written By:
George Griffiths
George Griffiths
Head of Dealing

 

 

Macro  and Policy Backdrop

 

Markets are digesting a notable diplomatic shift following the White House meeting

between President Trump, President Zelensky, and key European leaders. Trump has now

signalled support for a direct Zelensky–Putin dialogue, laying the groundwork for a trilateral

summit. German Chancellor Merz suggested such a meeting could occur within two weeks.

This emerging peace calculus has already rippled through global markets. Oil prices eased,

with Brent and WTI retracing lower, as traders weighed the potential return of Russian crude

in the event of a ceasefire. For industrial metals, the disinflationary impulse from cheaper

energy sits in contrast to tariff-driven cost pressures, creating a complex backdrop for the

Federal Reserve’s September policy debate. The combination of shifting geopolitical risk,

evolving trade policy, and macro uncertainty continues to frame investor sentiment across

commodities.

 

Copper Market Structure

COMEX copper inventories remain elevated, with the latest reported level at 241,466 metric

tons. In the aftermath of unexpected U.S. tariff policy announcements, the forward curve

remains sufficiently in contango to support “full carry” economics, estimated at roughly

$40–50 per metric ton ($0.02/lb) per month when factoring in storage and financing costs.

The incentive for metal to move from COMEX back into the LME system is unlikely to gain

traction unless a discount of $300–400/mt emerges, according to trader estimates.

 

Concentrate Supply and TC/RC Movements

Treatment and refining charges (TC/RCs) have improved from the low levels seen earlier in

2025 but remain meaningfully negative. The shift is largely attributed to prompt units

entering the market, with reports of 60–80 kt available in August and September, boosted

by additional concentrate supply diverted due to Indonesian smelter issues at Gresik.

Expectations are that the underlying concentrate market will stay structurally tight, even if

prompt availability temporarily eases pressure.

 

Supply Dynamics: Chile and Beyond

A major new disruption emerged at El Teniente, one of the world’s largest underground

copper mines, which was halted on July 31 following a seismic event that killed six workers

and injured nine. The tremor affected a newly developed zone known as Andesita, and

regulators are requiring a comprehensive review before full operations resume.

 

Codelco has now received approval for a partial restart, though uncertainty remains over

when the mine can fully return to capacity. El Teniente typically accounts for about a

quarter of Codelco’s output, so prolonged curtailments could tighten global supply at a

time when the market is already sensitive to disruptions.

 

Positioning

The latest CFTC Commitment of Traders report shows net length easing slightly to 33,773

contracts (down 379 w/w). Flows indicate long liquidation outweighed by limited short

covering. Positioning now sits at 49% of its 5-year range, still healthy but with momentum

tilting more bearish as traders digest tariff-related macro risks and shifting supply

narratives.

 

Aluminium Market Structure

Latest LME aluminum inventories stand at 479,525 mt, with Asia holding the overwhelming

majority (475,425 mt). The stock build is marginal, with +25 mt added in Europe, while Asia

saw small warrant cancellations. The dominance of Asian storage continues to highlight the

regional imbalance in physical aluminum trade and financing.

 

Positioning

Specs added to net length, which now stands at 98,043 contracts (up +2,471 w/w). This

came despite long liquidation, as short covering dominated. Net length is at 53% of its 5-

year range, which is moderately extended. Interpretation leans bullish, though the pace of

gains appears to be slowing.

 

Price Action & Narrative

Aluminium has moved lower in the wake of the White House talks, with LME 3-month last at

$2,565/mt, breaking beneath its 200-day average. This marks a significant technical shift,

as the 100-day (~$2,516/mt) now acts as the key downside marker.

 

The price action underscores how the market is reading the ceasefire narrative primarily

through the supply side. Two factors dominate:

 

– Looser restrictions on Russian flows could add additional tonnes back into the global

system.

– Lower energy costs from the potential release of Russian crude reduce the risk of smelter

curtailments, supporting higher output.

 

Unlike copper and nickel, which retain demand-led upside narratives linked to

reconstruction, aluminium is pricing in the supply relief risk most directly. This is reflected

in the break of its long-term moving average, pointing toward near-term bearish momentum

unless new demand catalysts emerge.

 

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