market

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Traders watch the electronic board showing share prices in a stock exchange in Sao Paulo, Brazil.

© Rafael Matsunaga (CC BY 2.0)

market, a means by which the exchange of goods and services takes place as a result of buyers and sellers being in contact with one another, either directly or through mediating agents or institutions.

Markets in the most literal and immediate sense are places in which things are bought and sold. In the modern industrial system, however, the market is not a place; it has expanded to include the whole geographical area in which sellers compete with each other for customers. Alfred Marshall, whose Principles of Economics (first published in 1890) was for long an authority for English-speaking economists, based his definition of the market on that of the French economist A. Cournot:

Economists understand by the term Market, not any particular market place in which things are bought and sold, but the whole of any region in which buyers and sellers are in such free intercourse with one another that the prices of the same goods tend to equality easily and quickly.

To this Marshall added:

The more nearly perfect a market is, the stronger is the tendency for the same price to be paid for the same thing at the same time in all parts of the market.

The concept of the market as defined above has to do primarily with more or less standardized commodities, for example, wool or automobiles. The word market is also used in contexts such as the market for real estate or for old masters; and there is the “labour market,” although a contract to work for a certain wage differs from a sale of goods. There is a connecting idea in all of these various usages—namely, the interplay of supply and demand.

Most markets consist of groups of intermediaries between the first seller of a commodity and the final buyer. There are all kinds of intermediaries, from the brokers in the great produce exchanges down to the village grocer. They may be mere dealers with no equipment but a telephone, or they may provide storage and perform important services of grading, packaging, and so on. In general, the function of a market is to collect products from scattered sources and channel them to scattered outlets. From the point of view of the seller, dealers channel the demand for his product; from the point of view of the buyer, they bring supplies within his reach.

There are two main types of markets for products, in which the forces of supply and demand operate quite differently, with some overlapping and borderline cases. In the first, the producer offers his goods and takes whatever price they will command; in the second, the producer sets his price and sells as much as the market will take. In addition, along with the growth of trade in goods, there has been a proliferation of financial markets, including securities exchanges and money markets.