The Herfindahl-Hirschman index (also shortened to just the Herfindahl index)is a measure of ____.

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The Herfindahl-Hirschman index (HHI) is a measure of market concentration, which is a way of describing how much power a specific group of companies or businesses have over a particular market or industry. The HHI is calculated by summing the squares of the market shares of all companies in the market. Higher values of the HHI suggest a more concentrated market, with a few dominant players, while lower values suggest a less concentrated market with more competition.

The Herfindahl-Hirschman Index (Also Shortened to Just the Herfindahl Index)is