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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, which was launched at the end February, quelled the early-year euphoria of copper and tin.

Since then, the Iran war has been the main topic of discussion. This has made it difficult for traders to make sense of the headlines because they are so confusing.

It seems that the Strait of Hormuz has entered a quantum world in which it is simultaneously open and closed, depending on who is speaking at any particular point?in time.

Vanda Insights, a provider of oil market analyses, founded by?Vandana hari, says Schrodinger Strait is "continuing to reopen, but it's patchy and unpredictable."

This is a good description of current peace talks in Doha.

The LME Index (a basket of six base metals that are traded on the London Market) has fluctuated from exuberance, to dejection, to resilience in 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 in two ways: missile attacks on two Gulf smelters, and logistical constraints at other smelters.

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

At the beginning of June, LME's three-month aluminum reached a record high of $3.787.50 per tonne. This was a four-year-high.

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 offwarrant stock has shrunk to just under 400,000 tons. Most of the Russian metal is in this inventory.

Confusion over Copper

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

Copper's potential impact on global growth at a macro-level is negative. 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 to make money.

The market for refined metals is still waiting on tenterhooks to see if President Donald Trump will implement tariffs. Any day now, a decision will be made.

The U.S. premium continues to drain metal from other countries.

Since the middle of May, LME three-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 copper because of its 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 steadily increasing production and on track to achieve self-sufficiency within the next few years.

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's three-month nickel rate reached a record high of $20,000 a ton, a level not seen in two years.

Indonesian producers who use acid to leach their products are under more pressure due to the sulphur influx from the Gulf.

The price has fallen back to $16,000 per tonne due to growing speculations that Indonesia will loosen up its mining quotas.

While Jakarta weighs its options the surplus metal continues. LME stock levels have peaked, but Shanghai Futures Exchange inventories just passed 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. It's a promise that there will be a structural shortage of the soldering metal due to the rising demand.

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

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 7% losses.

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

LME trading is characterized by warehouse arbitrage and rotation of inventory between on-warrant or 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)