Commodity

A commodity is a standardised raw material — oil, gold, wheat — traded on its grade, not its brand.

A quick example

What it means for you

It is the inflation and crisis hedge that behaves unlike stocks.

Picture this

Inflation surprises the market, and a portfolio holding stocks and bonds falls while a small commodity allocation rises — oil climbs on supply worries and gold holds its value as a store of wealth. The investor who skipped commodities watches the whole portfolio drop together. The cautionary flip side: in 2014, oil crashed 50% and stayed low for years, and anyone who loaded up on oil at the top experienced a long, painful drawdown. Commodities hedge inflation but punish bad timing.

Common mix-ups

Commodities can stay cheap for years; timing and storage costs bite.

How to apply it

Keep commodity exposure modest — a small percentage of a portfolio via broad funds rather than single commodities. Holding physical gold adds storage costs; futures add roll costs and complexity.

Key takeaway

Commodities are the inflation and crisis hedge that behaves differently from stocks, but they punish bad timing with long, painful droughts. Gold holds value in panic, oil tracks growth and geopolitics, and broad baskets offset stock risk — yet a single commodity can stay cheap for years. Keep exposure modest and broad, via funds rather than single names or physical holdings. They diversify the portfolio, not because they always rise, but because they do not always fall with it.

Definitions reviewed by the Investing Glossary editorial team.