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Market concentration is affected through various forces, including barriers to entry and existing competition. Market concentration ratios also allows users to more accurately determine the type of market structure they are observing, from a perfect competitive, to a monopolistic, monopoly or oligopolistic market structure.
Moreover, studies indicate that a concentration ratio of between 40 and 70 percent suggests that the firm operates as an oligopoly. [38] These figures are viable but should be used as a 'rule of thumb' as it is important to consider other market factors when analysing concentration ratios.
The and concentration ratios are commonly used. Concentration ratios show the extent of largest firms' market shares in a given industry. Specifically, a concentration ratio close to 0% denotes a low concentration industry, and a concentration ratio near 100% shows that an industry has high concentration.
The higher the four-firm concentration ratio is, the less competitive the market is. When the four-firm concentration ration is higher than 60, the market can be classified as a tight oligopoly. A loose oligopoly occurs when the four-firm concentration is in the range of 40-60. [21]
N-firm concentration ratio, N-firm concentration ratio is a common measure of market structure. This gives the combined market share of the N largest firms in the market. [ 9 ] For example, if the 5-firm concentration ratio in the United States smart phone industry is about .8, which indicates that the combined market share of the five largest ...
If the resulting figure is above a certain threshold then economists will consider the market to have a high concentration (e.g. market X's concentration is 0.142 or 14.2%). This threshold is considered to be 0.25 in the U.S., [ 9 ] while the EU prefers to focus on the level of change, for instance that concern is raised if there is a 0.025 ...
Market dominance is the control of a economic market by a firm. [1] A dominant firm possesses the power to affect competition [2] and influence market price. [3] A firms' dominance is a measure of the power of a brand, product, service, or firm, relative to competitive offerings, whereby a dominant firm can behave independent of their competitors or consumers, [4] and without concern for ...
The Lerner index is defined by: = where P is the market price set by the firm and MC is the firm's marginal cost.The index ranges from 0 to 1. A perfectly competitive firm charges P = MC, L = 0; such a firm has no market power.