By Charles Pitts
The London Metal Exchange (LME) navigated a first half of 2026 defined by what analysts describe as a cycle of “exuberance to dejection.” While the LME Index (LMEX) ended the period with a show of resilience, the path was carved by acute geopolitical shocks, record-breaking trading volumes, and a widening divergence in stockpile health across the base metals complex.
As of July 5, 2026, the market reflects a fundamental split: metals like aluminium and copper are grappling with structural supply risks and inventory depletion, while nickel continues to struggle under the weight of a persistent global surplus. For operators and investors, the first six months of the year served as a reminder that “paper” prices and physical availability are frequently decoupled by the realities of conflict and trade policy.
Geopolitical Shocks: The Gulf Conflict and Aluminium
Aluminium emerged as the primary geopolitical casualty of the first half. Prices for the light metal spiked to a four-year high, nearing $3,787.50 per tonne in early June, driven almost entirely by the escalating conflict in the Gulf. Missile strikes on two major regional smelters and significant logistical disruptions at others created an immediate supply vacuum.
Traders remain focused on the Strait of Hormuz, where transit risks have added a permanent “war premium” to LME aluminium contracts. Although prices saw a technical sell-off in late June as some operations partially resumed, the underlying stress remains. The implementation of the European Union’s Carbon Border Adjustment Mechanism (CBAM) has further complicated the landscape, raising carbon costs and supporting regional premiums for non-Russian metal.
The volatility has driven massive engagement on the exchange. The LME reported its highest-ever quarterly volume in Q1 2026, with Average Daily Volume (ADV) up 25.7% year-on-year. Aluminium and copper were the primary engines of this liquidity surge, reflecting a market that is increasingly using LME contracts to hedge against sudden border closures and infrastructure damage.
Stockpile Erosion: The Aluminium Crisis
While price volatility captures headlines, the more concerning metric for physical traders is the state of LME warehouses. Aluminium stockpiles have undergone a severe erosion, shrinking to just over 400,000 tonnes. Perhaps more importantly, the vast majority of this remaining metal is of Russian origin, which remains a complicating factor for Western consumers and financial institutions.
The “cash-to-three-month” spread for aluminium remained in a firm backwardation of approximately $66.50 per tonne through June. This indicates that the market is willing to pay a premium for immediate delivery, a classic signal of physical scarcity.
“We are seeing a genuine erosion of exchange-standard metal,” noted one senior metals analyst. “It isn’t just about the war; it’s about a decade of underinvestment in Western smelting capacity meeting a sudden, sharp disruption in the East.”
Copper’s Ceiling: Smelter Dysfunction and Tariff Anxiety
Copper entered 2026 on a bullish footing, up nearly 25% year-on-year. However, the metal has spent much of the second quarter trapped in a range-bound channel between $13,000 and $14,000 per tonne.
The primary headwind for copper is a “dysfunctional” concentrates market. Treatment and refining charges (TC/RCs) have collapsed to levels where smelters are forced to rely on sulfuric acid and other by-products to maintain profitability. This has led to widespread speculation regarding production cuts among Chinese and European smelters.
On the policy front, the market is in a “wait-and-see” mode regarding U.S. trade policy. The potential for the Trump administration to impose significant tariffs on refined copper imports has created a psychological ceiling for the price. While the copper price outlook remains fundamentally strong due to the AI data center surge and global grid expansion, geopolitical uncertainty has temporarily neutralized the bulls.
The Surprise Winner: Zinc’s Quiet Rally
Zinc has been the “sleeper hit” of the 2026 volatility cycle. Unlike aluminium or copper, zinc has little direct exposure to the Gulf conflict, allowing it to trade primarily on industrial fundamentals. By the end of June, three-month zinc hit a four-year high of $3,658 per tonne, marking a 14% gain since the start of the year.
Zinc’s resilience was most evident during the broad-based sell-offs in early June. While other metals saw triple-digit drops in a single session, zinc held its ground, finishing only marginally lower week-on-week. This outperformance suggests that the zinc market is finally seeing the impact of supply-side discipline and the restart of key steel-related demand in emerging markets.
Unlike aluminium, zinc inventories on the LME have remained stable. The absence of an inventory crisis has prevented the kind of wild spread volatility seen in other segments, making zinc a preferred haven for investors looking for base metal exposure without the extreme geopolitical “noise.”
The Laggard: Nickel’s Surplus Problem
Nickel remains the outlier in the base metals complex. Despite record trading activity on the LME: with nickel ADV rising 40.3% year-on-year in Q1: the metal has consistently underperformed its peers.
The core issue is a persistent and growing surplus. While rare earths and other critical minerals have seen midstream moats develop, nickel is flooded by Indonesian production. Stocks on the Shanghai Futures Exchange (SHFE) surpassed 100,000 tonnes in June for the first time since 2016, and LME inventories continue to build.
Jakarta’s ongoing debates regarding nickel export policies and environmental standards have introduced some speculative interest, but the physical reality of oversupply has capped any significant rallies. For now, nickel is the only major LME metal where we are seeing an inventory build rather than erosion.
Market Snapshot: 1H 2026 Performance
| Metal | 1H 2026 Performance (Approx.) | Inventory Trend | Top Risk Factor |
|---|---|---|---|
| Aluminium | +12% (Peak near $3,800) | Acute Erosion | Gulf Conflict / CBAM |
| Copper | +5% (Range: $13k-$14k) | Balanced/Tight | US Trade Tariffs |
| Zinc | +14% (Peak near $3,660) | Stable | Global Steel Demand |
| Nickel | -8% (Persistent Surplus) | Building | Indonesian Policy |
| Tin | +18% (Market Leader) | Very Tight | Myanmar/Indonesian Supply |
H2 2026 Outlook: Positioning for the Pivot
As we transition into the second half of 2026, the focus for mining executives and investors will remain on the interplay between mining investment intelligence and geopolitical stability.
The critical question is whether the stockpile erosion in aluminium will spread to other metals. If the “dysfunction” in copper concentrates eventually forces significant smelter closures, copper could experience an aluminium-style breakout in the fourth quarter. Conversely, if a diplomatic resolution is reached in the Gulf, we could see a rapid unwinding of the war premium that has propped up the aluminium complex.
For now, the LME remains a high-stakes arena where the physical scarcity of metal is finally beginning to dictate the terms of engagement.
