Commodities are raw materials essential for the global economy, as they constitute an important part in the production of other goods.
In financial markets are divided by base and precious metals (gold, silver, platinum, copper, tin, etc.) Energy (oil, gas), food (sugar, cocoa, coffee, cotton, etc..) ,Grains (corn, wheat, etc..) and cattle, and in terms of investment are more a tool to diversify a portfolio.
Like the equity investment, these instruments carry a high risk, although yields in times of winnings are usually very high.