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A Comparison of the HHI and the Procurement-Based Framework in Merger Review
by Kenneth Gong Abstract The Herfindahl-Hirschman Index (HHI), a measure of market concentration, plays a critical role in the U.S. Merger Guidelines. It is used as a threshold metric that marks certain mergers as potentially harmful to consumers. However, the microfoundations for the HHI are grounded in the Cournot oligopoly model, which may not be […]
