Herfindahl Index

Buyer Concentration: Understanding Market Power on the Demand Side
Buyer Concentration refers to a measure of market power on the demand side of a market. It is analogous to the N-firm concentration ratio and evaluates the proportion of total market purchases made by the largest buyers.
Concentration: Market Dominance by Few Firms
Concentration refers to the extent to which a market is dominated by a limited number of firms. Key measurements include the N-firm concentration ratio and the Herfindahl index. Also related to export concentration.
Market Structure: An Overview of Competitive Dynamics
An in-depth exploration of market structure, its types, key metrics, importance, and impact on economies and firms. From the N-firm concentration ratio to the Herfindahl index, understand the complexities of how markets are organized.

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