Commodity.

In plain English

Commodities are basic raw materials that trade in standardized contracts: energy (oil, natural gas), metals (gold, silver, copper), agricultural products (wheat, corn, soybeans, coffee), and softs (cotton, sugar). Most retail investors get commodity exposure through ETFs (GLD for gold, USO for oil) rather than direct futures contracts. Commodities are often pitched as an inflation hedge, though the relationship is messier than the pitch suggests. They produce no income, so the only return is price change.

01Why it matters

Commodities have historically had low correlation with stocks and bonds, which makes a small allocation useful for diversification. They also tend to spike when geopolitical events disrupt supply (oil during Middle East crises, wheat during the 2022 Russia-Ukraine conflict). The 'small allocation' part matters: commodities have produced near-zero real returns over long horizons in aggregate, so they are more about volatility offset than wealth building.

02The math, step by step

Gold can put together long stretches of strong gains when inflation pressure and geopolitical risk push central banks and individuals into the metal, and those runs do not always track what stocks are doing. In some recent stretches gold and the S&P 500 have climbed at the same time, which is the real point: gold does not need stocks to fail to earn a small place in a portfolio.

Illustrative example. The amounts here are hypothetical, chosen to show how the math works, not real quoted rates or figures.