Herfindahl–Hirschman Index (HHI): A Complete Guide with Illustrations
What is the Herfindahl–Hirschman Index (HHI)? The Herfindahl–Hirschman Index (HHI) is a widely used measure of market concentration that helps determine the level of competition within an industry. It is commonly used by government regulators, economists, and business analysts to assess whether a market is highly competitive or dominated by a few large firms (oligopoly…