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Andy Home: War and peace will have a major impact on the first half of 2026 for metals traded at the LME.

Operation Epic Fury, launched at the end of February, quelled the early-year euphoria which had propelled copper and tin prices to new highs.

Since then, the Iran war has dominated headlines. This has made trading difficult for traders as the headlines are so confusing.

Strait of Hormuz appears to have entered into a quantum world in which it is simultaneously open and shut, depending on who is speaking at any given time.

Vandana Hari is the founder of oil market analyst?Vanda Insights. She says Schrodinger's Strait continues to reopen, but it's patchy and unpredictable.

This is a good way to describe the current peace negotiations in Doha.

The LME Index (a basket of six base metals traded in London) has fluctuated from elation to depression to resilience during the first half of the year, and ended the period somewhere between.

The performance of each metal has varied widely depending on its sensitivity to Gulf news.

ALUMINIUM HIT

The war has caused the aluminium industry to suffer direct losses. Two Gulf smelters were hit by missiles, and other smelters have been affected by logistics problems.

According to the International Aluminium Institute, regional production fell by 2 million metric tonnes annually between February and may.

At the beginning of June, the unprecedented supply shock sent three-month LME aluminium to its highest level in four years at $3,787.50 a ton.

Since then, the war premium has almost completely dissipated as market prices have returned to a sort of normality.

Low?LME inventories are part of the new normal. The combined on-and off-warrant stock has shrunk to just under 400,000 tons. Most of the metal is Russian.

Confusion over Copper

The war has added confusion to an already confusing copper market.

Copper's potential impact on the global economy is negative at a macro-level. On a micro-level, however, the Strait closure has caused a shortage of sulphuric acids, which is affecting copper producers who use leach technology.

Copper concentrates is a dysfunctional market. Smelter treatment conditions have collapsed to the point where processors now depend on anything but copper for profit.

The market for refined metals is on tenterhooks as it awaits a decision from President Donald Trump on tariffs. Any day now, a decision will be made.

The U.S. premium continues to drain metal from around the world.

Since the middle of May, LME 3-month copper has been teetering between $13,000 per ton and $14,000.

There are still plenty of super bulls in the LME option market. Investors like the copper story about a structural supply deficit.

ZINC SURPRISE

Zinc has surprised the LME pack this year, despite having little direct exposure to war.

Early in June, LME zinc for three months hit a high of almost four years at $3,658 a ton. The price closed the month 14% higher than it was at the beginning of the year. Tin had the strongest performance.

According to the International Lead and Zinc Study Group, the global zinc market is in a slight deficit.

The shortage is concentrated outside of China, where the smelter industry continues to perform below expectations. China is increasing its production and will soon be self-sufficient.

NICKEL PLAYS INDONESIAN NUMBERS GAMES

The nickel trading story has been dominated by Indonesia and its government's efforts to curb the production of this sector.

The LME nickel price for the three months of May reached a record high of $20,000 per tonne, a level not seen in two years.

The Gulf sulphur "squeeze" has put more pressure on Indonesian producers who use acid in their leaching operations.

The price has fallen to $16,000 per ton due to the growing speculation that Indonesia will loosen its mining quotas.

As Jakarta considers its options, excess metal continues to build up. LME stock levels have peaked, but Shanghai Futures Exchange inventories just exceeded 100,000 tons for first time since 2016.

TURBULENT TIN AND OVERSUPPLIED LEADS

Lead and tin have not been affected by the Gulf War, so each can follow their own narrative.

This is the case for tin. The structural shortage of the metal used in electronic soldering will be a problem.

Tin was the best performer in the LME complex for the first half 2026 with gains of 27% year-to date.

Lead is, on the other hand, a market that has been weighed down by excess metal. It closed out the first half of this year with a loss of 7%.

Since the beginning of the year, the combined LME on-warrant and off-warrant inventories have hovered around the 500,000-ton level.

LME trading is characterized by warehouse arbitrage and inventory rotation between on warrant and off warrant storage.

This also shows how the aluminium market has changed dramatically since the beginning of the Iran War.

Andy Home is a columnist at. This column is great! Check out Open Interest, your new essential source for global financial commentary. Follow ROI on LinkedIn and X. Listen to the Morning Bid podcast daily on Apple, Spotify or the app. Subscribe to the Morning Bid podcast and hear journalists discussing the latest news in finance and markets seven days a weeks.

(source: Reuters)