There are times (occasionally long periods of time) in markets when abstractions dominate: earnings revisions, forward multiple expansion, and Fed action speculation, to name a handful that come to mind. On the other end of the scale from abstract, we have commodities. Whether extracted, grown, refined, or consumed, commodities are a backbone of human existence. Wheat does not care about your margin assumptions. Oil, inconveniently, must be drilled before it is derivatized. And, don’t get me started on coffee bean futures…
This physicality is precisely what makes commodities (both the raw materials themselves and the companies that produce them) such an intriguing – and often misunderstood – component of a portfolio… whether obvious or behind the scenes. So, let’s dive into the pool on this asset class.
A Brief Framing
When investors talk about “commodities,” they are often referring to two distinct, though related, exposures. On one hand, there are commodity-linked funds. ETFs or mutual funds that track commodity prices through futures contracts across energy, metals, and agriculture. On the other, there are commodity-focused companies such as miners, energy producers, and agricultural firms whose revenues and profits are tied, sometimes loosely and sometimes tightly, to underlying commodity prices. These are not interchangeable. One represents exposure to the price of the commodity itself. The other represents exposure to the business of extracting or producing that commodity, complete with management decisions, cost structures, capital allocation decisions, and the occasional operational surprise that no spreadsheet quite captures.
A Macroeconomic Argument
At a high level, the investment case for commodities tends to strengthen under a few broad global conditions. Inflation is the most frequently cited driver, and with some historical justification. When the general price level rises, it is often because the cost of inputs – energy, raw materials, transportation – has increased. Commodities sit upstream in this process, which suggests that owning them may allow investors to move closer to the source of inflation rather than simply reacting to its downstream effects. Owning commodities provides exposure to many of the same factors that drive inflation – though impact can vary over time and across market conditions. Of course, the relationship is not perfectly linear. Commodities can lag inflation, overshoot it, or behave in ways that seem almost deliberately uncooperative. Markets, as always, are under no obligation to validate the elegance of the theory.
Global growth also plays a meaningful role. Periods of synchronized expansion (particularly those driven by infrastructure spending, urbanization, or industrial activity) tend to support demand for commodities such as building materials, copper, steel inputs, and energy. Emerging markets are especially important in this regard. When economies are building roads, power grids, and cities, they consume commodities at scale. When that pace slows, demand can recede just as quickly. At the same time, supply dynamics introduce another layer of complexity. Commodities cannot be scaled overnight. Mines take years to permit and develop, oil production requires sustained capital investment, and agricultural output depends on weather, land, and logistics. When geopolitical tensions enter the equation – through trade disputes, sanctions, or resource nationalism – supply can become constrained in ways that are both unpredictable and impactful. For investors, this often translates into periods of sharp price movements that are not always neatly tied to near-term demand.
A Portfolio Argument (Briefly)
Commodities are often introduced into portfolios under the banner of diversification, and there is some merit to that framing. Their return drivers differ from those of traditional equities and bonds, and they have at times performed well in environments where public-market financial assets struggle, particularly during inflationary or supply-constrained periods. They can also provide exposure to real assets rather than the traditional stock and bond exposure.
However, diversification should not be confused with stability. Commodity returns can be highly volatile, often more so than equities, and correlations are not static. The correlation (or non-correlation, depending on the asset to which we are comparing the commodity) is a key element to the role of commodities in a portfolio. As we have covered before in a Weekly Whiteboard, correlation is a fundamental part of asset allocation in an investment portfolio. During periods of broad market stress, commodities do not always behave as the neatly non-correlated diversifier one might hope for. In practice, commodities diversify the source of risk more than they smooth the experience of it.
Commodity Funds vs. Commodity Companies: A Subtle but Important Distinction
The distinction between commodity funds and commodity-focused companies becomes particularly important when considering how these exposures behave in a portfolio.
Commodity funds, which typically rely on futures contracts, offer relatively direct linkage to commodity prices and can be useful for tactical positioning or inflation hedging. However, their structure introduces nuances that are easy to overlook. The mechanics of rolling futures contracts (particularly in environments characterized by contango or backwardation) can materially influence returns, sometimes in ways that feel disconnected from the direction of spot prices. In addition, these vehicles typically do not generate income, and their performance may diverge from what investors intuitively expect.
Commodity-focused companies, by contrast, are equities. They can provide income through dividends and may benefit from operational leverage, where rising commodity prices disproportionately boost profits. At the same time, this exposure is indirect and filtered through the realities of running a business. Management decisions, cost inflation, capital allocation discipline, and broader equity market dynamics all play a role. It is entirely possible for a commodity producer to underperform even in a rising price environment, which is a polite reminder that a mining company is not simply a ticker symbol for the metal it produces.
The Risk Conversation
No discussion of commodities is complete without acknowledging their less flattering characteristics… volatility is perhaps the most obvious. Commodity prices can move quickly and dramatically, influenced by weather patterns, policy decisions, supply disruptions, and demand shocks. While this volatility can create opportunity, it rarely creates comfort.
Cyclicality is another defining feature. High prices tend to incentivize new supply, which eventually leads to oversupply and lower prices. Those lower prices, in turn, reduce investment, setting the stage for future shortages. The cycle is intuitive in hindsight and frustrating in real time, and consistently timing it is, to put it gently, difficult.
There is also the question of intrinsic cash flow. Commodities themselves do not generate earnings or interest. Their returns are purely price-driven, which can make long-term compounding less predictable compared to assets that produce ongoing income. And, lastly, there is the matter of structural complexity. Futures-based funds introduce layers of mechanics that are not always visible at first glance, while equity-based exposure introduces corporate risks that extend beyond commodity prices. Neither is inherently problematic, but both require a level of understanding that goes beyond a simple allocation decision.
Where Commodities May Fit
For investors with a higher tolerance for risk, longer time horizons, and an interest in inflation protection and diversification, commodities can play a meaningful – though typically modest – role within a broader portfolio. They offer exposure to a different set of economic drivers and can complement more traditional asset classes when used thoughtfully. However, for those seeking stability, predictable income, or low volatility, commodities are unlikely to meet those expectations on their own. Their role, if any, is better understood as a complement rather than a cornerstone.
A Closing Thought: Real Assets in an Abstract World
In a financial system increasingly dominated by intangible assets – software, services, intellectual property – commodities remain firmly grounded in the physical world. They are, quite literally, the building blocks of economic activity. That grounding is both a strength and a source of frustration. Commodities do not always behave in clean, model-friendly ways. They are shaped by forces that are as much geological and political as they are financial. But perhaps that is precisely the point.
In a portfolio constructed largely of promises (future earnings, future payments, future growth), commodities offer something different: exposure to what is required before any of those promises can be fulfilled. Just don’t expect them to behave politely along the way.
