This paper analyzes all Section 1, Sherman Act price fixing cases brought by the U.S. Department of Justice between 1961 and 2013. Over 500 cartels were prosecuted during this period. The determinants of cartel formation and cartel breakup are estimated, including analysis of the impact of the...

When a new firm enters a market and starts selling a spatially-differentiated product, the prices of existing products may rise due to a better match between consumers and products. Entry may have three unusual effects. First, the new price is above the monopoly price if the two firms collude...