Copper and Crude Oil Diverge: Macro Logic and Arbitrage Opportunities Behind Commodity Market Fragmentation

I. Divergence Pattern: The Reality of Strong Copper and Weak Oil

Recently, the global commodity market has shown significant structural divergence: industrial metals represented by copper have been oscillating upward, while crude oil prices have remained under pressure. According to statistics from multiple international commodity research institutions, copper prices have risen in a stepwise manner from the second half of 2024 to early 2025. Market participants generally attribute this to rising expectations of a global manufacturing recovery. In contrast, the crude oil market is suppressed by both OPEC+ production increase plans and weak end-user demand. Even occasional disturbances in the Middle East geopolitical situation have limited the rebound in oil prices. This divergence of strong copper and weak oil is triggering capital migration from the energy sector to the industrial metals sector and spawning various cross-commodity arbitrage strategies.

Historically, copper and crude oil, as the two most representative industrial raw materials, have maintained a high correlation in price trends—both rise during economic expansion and fall during recessions. However, the divergence in recent months has broken this usual pattern. According to Reuters citing analysts, this divergence indicates that the market is pricing in a "transition from old to new growth drivers": copper benefits from structural demand increments from global power infrastructure investment, electric vehicles, and new energy installations, while crude oil faces supply pressure from improved efficiency of traditional fuel vehicles, overcapacity in refining, and internal divisions within OPEC+.

II. Core Drivers: Manufacturing Recovery Expectations vs. Oversupply Concerns

The macro logic behind copper's strength is mainly rooted in the marginal improvement of global manufacturing PMIs. Since the fourth quarter of 2024, the U.S. ISM Manufacturing Index has stood above the boom-bust line for several consecutive months, the Eurozone manufacturing PMI has stabilized and rebounded from lows, and China's official manufacturing PMI has remained in expansion territory. According to data from the National Bureau of Statistics, China's Manufacturing Purchasing Managers' Index recorded 50.1% in December 2024, with the new orders index rising 0.6 percentage points month-on-month, indicating recovering downstream restocking demand. Meanwhile, fiscal stimulus plans in major global economies continue to intensify, especially the factory construction boom driven by the U.S. Inflation Reduction Act and the CHIPS and Science Act, creating rigid demand for base metals like copper and aluminum. Goldman Sachs noted in a recent report that the global copper market may enter a supply deficit cycle in 2025, with inventory levels already at multi-year lows, providing solid support for copper prices.

In contrast, the crude oil market faces more prominent bearish factors on the supply side. OPEC+ began to gradually phase out voluntary production cuts from the fourth quarter of 2024. According to estimates by the International Energy Agency (IEA), the group's daily crude oil production may increase by about 1.4 million barrels in the first quarter of 2025. However, global oil demand growth has clearly slowed—China's apparent oil consumption saw its first year-on-year decline in nearly two decades in 2024, European industrial oil demand is constrained by high interest rates and deindustrialization, and U.S. gasoline consumption is slowly shrinking due to increased electric vehicle penetration. Additionally, production from non-OPEC countries such as the U.S., Brazil, and Guyana continues to grow, further exacerbating market surplus expectations. Although Russian crude oil exports experienced a temporary contraction due to sanctions in early 2025, Brent crude oil prices only briefly rebounded to around $80 per barrel before returning to a downward trend.

III. Capital Flows: From Energy to Industrial Metals

The divergence in capital flows is a significant confirmation of the strong copper and weak oil pattern. According to data from the U.S. Commodity Futures Trading Commission (CFTC), from late 2024 to early 2025, speculative net long positions in COMEX copper futures continued to expand, while net long positions in WTI crude oil futures shrank significantly, even turning net short in some periods. This capital shift is not an isolated phenomenon: in the Bloomberg Commodity Index, adjustments in the weighting of the industrial metals sector triggered passive funds to rebalance from energy to metals; meanwhile, macro hedge funds have also increased their allocation to copper to hedge against inflation expectations in the early stages of economic recovery.

Notably, copper's financial attributes have once again come to the fore in this rally. Due to the massive copper resources required for the global green transition, many sovereign wealth funds and pension funds view it as the "new oil," with a strong willingness for long-term allocation. In contrast, crude oil's financial attributes have weakened—the prevalence of ESG investment concepts has led some institutional investors to actively reduce exposure to fossil fuels, coupled with the advancement of carbon tax policies, the liquidity premium of crude oil futures is narrowing. According to BloombergNEF, global energy transition investment exceeded $2 trillion for the first time in 2024, with a high proportion going to grid upgrades and charging infrastructure. The copper intensity of this investment is about 3-5 times that of traditional investment, further strengthening copper's demand narrative.

IV. Arbitrage Strategy: The Hedging Logic of Long Copper, Short Crude

The divergence in copper and oil prices offers classic hedging arbitrage opportunities for investors. In the derivatives market, the long copper, short crude strategy (Long Copper, Short Crude) is gaining favor among an increasing number of quantitative trading teams and macro funds. The logic behind this strategy is that during a manufacturing recovery cycle, copper, as an industrial raw material, has greater demand elasticity, while crude oil has smaller price elasticity in an oversupply environment. In practice, investors can buy COMEX copper futures in the futures market while simultaneously shorting an equivalent amount of WTI crude oil futures, and use options to construct spread combinations to control tail risk. According to trader feedback, the copper-to-oil ratio (LME copper price/Brent oil price) has been climbing since late 2024 and has now broken through the historical average since 2018, providing objective arbitrage space.

However, arbitrage trading also faces several risks. On one hand, if OPEC+ unexpectedly cuts production significantly or the Middle East situation escalates sharply, crude oil could rebound quickly, leading to losses on the short side. On the other hand, if the global manufacturing recovery falls short of expectations, copper prices may correct. Therefore, professional institutions often use dynamic pair trading models, adjusting positions dynamically based on the historical percentile of the copper-to-oil ratio and setting stop-losses during abnormal fluctuations. Additionally, cross-market arbitrage is possible—for example, buying copper futures on the Shanghai International Energy Exchange (INE) and selling crude oil futures on the Dalian Commodity Exchange (or crude oil futures on the Shanghai International Energy Exchange), leveraging internal and external price spreads and exchange rate fluctuations to enhance returns.

V. Risk Warning

The above content is for reference only and does not constitute investment advice. Commodity prices are affected by multiple factors, including but not limited to global economic trends, geopolitical risks, monetary policy changes, and natural disasters. The divergence pattern of copper and oil may reverse at any time due to changes in macro expectations or supply-side emergencies. Investors should fully understand market risks when participating in related derivatives trading and make prudent decisions based on their own risk tolerance.