Managerial Economics 13th Edition by James McGuigan,Charles Moyer,Frederick Harris

Exercise 11

An industry is composed of Firm 1, which controls 70 percent of the market, Firm 2 with 15 percent of the market, and Firm 3 with 5 percent of the market. About 20firms of approximately equal size divide the remaining 10 percent of the market. Calculate the Herfindahl-Hirschman Index before and after the merger of Firm 2 and Firm 3 (assume that the combined market share after the merger is 20 percent). Would you view a merger of Firm 2 with Firm 3 as procompetitive or anticompetitive Explain.