koncentrációarányt

Koncentrációarány is a Hungarian term that translates to concentration ratio. It is a measure used in economics to quantify the degree of market concentration, indicating how much of the total market share is held by a small number of firms. A high concentration ratio suggests that a few large companies dominate the market, while a low ratio indicates a more fragmented market with many smaller players.

The most common forms of concentration ratios are the N-firm concentration ratios, such as the CR4 (four-firm concentration ratio) or CR8 (eight-firm concentration ratio). These ratios sum the market shares of the top N firms in an industry. For example, a CR4 of 70% means that the four largest firms in that industry collectively account for 70% of the total market sales.

Concentration ratios are important tools for economists and policymakers to assess market competition. High concentration can be associated with reduced competition, potential for monopolistic or oligopolistic behavior, and higher prices for consumers. Conversely, low concentration generally implies a more competitive environment. However, concentration ratios are not a perfect measure of market power. They do not account for potential entrants, the substitutability of products, or the intensity of rivalry among existing firms. Therefore, they are often used in conjunction with other market structure indicators.