A situation in which a particular market is controlled by a small group of firms.
An oligopoly is much like a monopoly, in which only one company exerts control over most of a market. In an oligopoly, there are at least two firms controlling the market.
Read more: Oligopoly Definition | Investopedia http://www.investopedia.com/terms/o/oligopoly.asp#ixzz3n0WkR8yY
Follow us: Investopedia on Facebook