Herfindahl – Hirschman Index
The HHI is the square of the percentage market share of each firm summed over the largest 50 firms (all firms if less than 50).
- C1^2 + C2^2 + C3^2 + C4^2 + … + C50^2
Leave a Comment
The HHI is the square of the percentage market share of each firm summed over the largest 50 firms (all firms if less than 50).