Commodities are physical raw materials, energy, metals, agriculture, that get consumed, transformed or burned rather than held for their own sake. As an asset class, an investor rarely takes delivery of the barrel of oil or the bushel of wheat, exposure comes through futures contracts, physical trusts or the equity of producers, but the return is meant to track the same underlying forces of scarcity, demand and supply that move the physical market.
Commodities pay no coupon and no dividend, their entire return comes from the price changing, plus or minus the cost or benefit of holding a futures position through time. That makes them a genuinely different animal from equities and bonds, and the reason allocators hold them is diversification and inflation protection, not a belief that commodities compound wealth the way productive businesses do.
Where the return actually comes from
Spot price change is the obvious source of return, but for most investors accessing commodities through futures, roll yield matters just as much. Rolling a expiring contract into the next one earns a positive return, backwardation, when future prices sit below spot, and loses money, contango, when they sit above it. Over long stretches this roll effect has driven as much of the return as the commodity's price itself.
Because commodities do not compound the way a business does, an oil price flat over ten years produces roughly a flat return, unlike a stock, whose earnings can grow even if its price stalls. This is the central reason commodities behave as a hedge and a trade rather than a long-term compounder.
The inflation and diversification case
Commodities sit at the start of the inflation chain, when energy and raw material prices rise, that shows up in headline inflation before it reaches wages or finished goods. That makes commodities one of the few asset classes that has reliably risen during unexpected inflation shocks, precisely when both stocks and bonds tend to struggle together.
The diversification case rests on low, sometimes negative, correlation to equities, especially during supply-driven inflation spikes. That property is worth more than the standalone return: a small commodities sleeve can improve a portfolio's resilience in the specific scenario, an inflation surprise, that traditional stock and bond portfolios handle worst.
Access and the risks that matter
Allocators access commodities through broad futures indices, single-commodity exposure like gold or oil, or the equities of producers, which carry commodity exposure plus company-specific and equity-market risk on top. Physical storage is impractical for most commodities, which is why futures, with their roll dynamics, dominate the asset class.
The risk that catches investors out is volatility without a return floor: commodities have no earnings, no book value, nothing underneath the price except supply and demand, so a wrong-way bet has no fundamental anchor to fall back on. Sizing a commodities allocation as a hedge, not a return engine, keeps that risk in proportion.
Who plays this
Hedge funds, particularly macro and commodity trading advisor strategies, are the most active traders of commodity futures. Sovereign wealth funds tied to commodity-exporting nations often hold natural commodity exposure through their home economy and sometimes hedge or diversify away from it. Asset managers offer the broad commodity index funds most allocators use for a passive sleeve.
See the Buyside Firms track for how hedge funds run macro and systematic strategies across these markets.