Commodities and Currencies

What Commodities Are and Why Families Consider Them

Commodities are raw or primary goods — energy products like oil and natural gas, precious metals like gold and silver, industrial metals like copper and aluminum, and agricultural products like wheat, corn, and soybeans. Unlike stocks or bonds, a commodity doesn't generate cash flow; its value comes from its use as an input to the global economy or, in the case of precious metals, from its role as a store of value.

Families with substantial wealth sometimes evaluate commodities as part of a broader approach to growth, income, and inflation-sensitive assets. The key appeal is that commodity prices have historically tended to rise when inflation accelerates — because inflation is often driven by rising input costs — making them a potential counterweight to assets like nominal bonds that tend to lose real value in inflationary environments. Whether that relationship holds reliably in any given period is something advisers debate extensively.

Commodities also tend to exhibit low or sometimes negative correlation to equities over long periods, meaning they have sometimes moved differently from stocks. That said, correlation is not stable; during sharp market dislocations, correlations across nearly all asset classes can spike toward one.

Gold as a Special Case

Gold occupies a unique place in the commodity universe. Most industrial commodities are consumed; gold is almost entirely accumulated, sitting in vaults, jewelry, or central bank reserves. Its price is driven far more by sentiment, inflation expectations, currency dynamics, and geopolitical uncertainty than by supply-and-demand fundamentals of a typical raw material.

Families sometimes consider gold specifically as a capital preservation hedge — a holding intended to retain purchasing power across long periods and across political regimes. Gold's long history as a monetary asset gives it a psychological and cultural weight that other commodities don't share. A qualified adviser can help evaluate whether and how gold might fit within a particular family's asset allocation.

Physical Ownership, Futures, and Funds

There are three broad ways families access commodity exposure, each with a very different cost and risk structure.

Physical Ownership

Physical ownership means holding the actual commodity — gold bars in a vault, for example. This eliminates the complexity of derivatives markets and avoids a cost called "roll cost" (explained below). The tradeoffs are storage costs, insurance, authentication risk, and illiquidity. Physical gold funds that hold allocated bars in institutional vaults attempt to bridge this gap, though they carry management fees and still require investors to understand how ownership is documented. A qualified attorney should review any custody or ownership arrangements for physical precious metals.

Futures-Based Exposure

A futures contract is a standardized agreement to buy or sell a specific quantity of a commodity at a predetermined price on a future date. Most commodity exchange-traded products and many institutional funds gain their exposure through futures rather than physical goods, because futures are far more liquid and practical for large-scale implementation.

The critical concept for any futures-based investment is the roll cost — sometimes called negative roll yield. Futures contracts expire; to maintain continuous exposure, a fund must sell expiring contracts and buy new ones further out in time. When the futures market is in contango — meaning future-dated contracts cost more than near-dated ones, which is the normal state for most commodities — the fund is repeatedly selling low and buying high. Over time, this mechanical cost can substantially erode returns relative to what spot commodity prices suggest. In a market structure called backwardation, the reverse is true and roll yield is positive, but backwardation is less common and less persistent for most commodities. Understanding whether roll costs are embedded in a quoted return is essential for evaluating commodity fund performance.

Commodity Equities and Broad Funds

Families sometimes access commodity exposure indirectly through equities — shares of mining companies, energy producers, or agricultural businesses. These have the advantage of generating cash flows and dividends, but they introduce company-specific risk and are much more correlated to the broad equity market than futures or physical commodities. Broad commodity index funds and exchange-traded funds that track commodity indices may hold a mix of futures contracts across energy, metals, and agriculture, providing diversified exposure but inheriting all the roll-cost dynamics described above.

Commodity exposure can also appear within broader real asset allocations, which may include infrastructure, farmland, and timberland alongside traditional commodity instruments.

Currency Exposure: The Unavoidable Byproduct

When a U.S.-based family invests in Japanese equities, European bonds, or a private equity fund denominated in euros, they automatically take on foreign currency exposure. If the dollar strengthens against the yen after purchase, the value of that Japanese holding — when converted back to dollars — falls, even if the underlying investment performed well in local terms. Currency movements can add or subtract meaningfully from returns over any given period.

For families with assets and liabilities spread across multiple countries — a common reality covered in depth in Global Wealth — currency exposure is not a single decision but a pervasive feature of the entire portfolio. A family with homes in France, a business interest in Canada, and a dollar-denominated lifestyle has natural currency exposures in multiple directions simultaneously.

Hedging Currency Risk: How It Works and What It Costs

Currency hedging means using financial instruments — typically forward contracts or currency swaps — to lock in an exchange rate for a future period, reducing uncertainty about what a foreign-denominated asset will be worth in the home currency. A forward contract is an agreement to exchange a specific amount of one currency for another at a fixed rate on a specific future date.

Hedging is not free. The cost of a currency hedge is driven primarily by the interest rate differential between two countries: hedging from a high-interest-rate currency into a low-rate currency costs money; the reverse can generate a small gain. These costs are embedded in the pricing of forward contracts and can be significant over time, particularly for long-duration hedges on bonds or illiquid assets. For private market investments with no fixed maturity, hedging is logistically difficult and expensive because the amount to be hedged is uncertain.

Whether to hedge currency exposure is a deliberate portfolio decision — not hedging is itself a choice to accept currency risk, not an absence of a decision.

Some families choose to hedge currency exposure on fixed-income allocations (where the currency effect can easily overwhelm the modest yield) but leave equity allocations unhedged, on the theory that currencies mean-revert over long periods and hedging costs erode returns. Others maintain a systematic hedging policy for all foreign exposures. Neither approach is universally correct; qualified advisers and a well-documented investment policy statement can help families articulate and maintain a consistent currency philosophy.

Costs, Liquidity, and Tax Considerations

Both commodity and currency strategies carry costs that are easy to overlook. Beyond management fees, roll costs in futures-based commodity funds, and hedging costs for currency forwards, there are bid-ask spreads, transaction costs, and potentially significant tax complexity. Many commodity funds structured as limited partnerships issue Schedule K-1s, which add filing complexity and may generate income in unexpected categories. Futures contracts held in taxable accounts in the United States have historically been subject to special tax rules (sometimes called the "60/40 rule") that blend short- and long-term gain treatment regardless of holding period — a licensed CPA must evaluate how any specific instrument is treated in a particular family's situation.

Physical precious metals, when sold, may be subject to tax rates applicable to "collectibles" rather than ordinary capital gains rates — another area where a CPA's guidance is essential before investing.

Liquidity in exchange-traded commodity products is generally strong during normal market conditions, but can deteriorate sharply during stress events. Physical commodity ownership is considerably less liquid. Currency forward contracts are highly liquid in major currency pairs but can become expensive or difficult to execute in less-traded currencies.

Important Questions and Common Mistakes

Families and their advisers often consider questions like: What specific risk is this commodity or currency exposure intended to address? Is the inflation-hedging rationale backed by a realistic time horizon? Are roll costs visible in the performance reporting, or is the fund comparing itself to spot prices that don't reflect those costs?

Common mistakes include treating commodity indices as a monolithic category (energy-heavy indices behave very differently from precious-metal-heavy ones), underestimating roll costs when evaluating past performance, and assuming currency exposure will "cancel out" in a diversified portfolio without explicitly modeling it. Failing to coordinate commodity and currency decisions with the tax team is another frequent oversight — the right instrument from an economic standpoint may create significant tax complications.

A family considering any meaningful allocation to commodities or any deliberate currency hedging program would typically begin with a review of the risk management implications alongside a licensed investment adviser, CPA, and, where trust structures are involved, a qualified estate attorney.