A commodity is a marketable or saleable item that is produced without many differences across a market. It has very little brand differentiation, and consumers have little concern regarding precisely where the item was produced. Typical commodities include petroleum, coffee beans, iron ore, copper, sugar, and wheat, and may also include various financial instruments, such as cash or currencies, bonds and stocks, or even other intangible financial assets and instruments, such as indexes of stock exchanges and interest rates.