Oligopoly

An oligopoly is a market form in which a market or industry is dominated by a small number of sellers (oligopolists). A general lack of competition can lead to higher costs for consumers. Because there are few sellers, each oligopolist is likely to be aware of the actions of the others. The decisions of one firm influence, and are influenced by, the decisions of other firms. Strategic planning by oligopolists needs to take into account the likely responses of the other market participants.

Read more about Oligopoly:  Etymology, Description, Characteristics, Modeling, Examples, Demand Curve