, merger laws and enforcement practices, econometric methods for analyzing prospective horizontal mergers, and evidence …

quantitative estimates of price changes, we multiply them by the merger pass-through matrix, which (under conditions we specify) is … approximated by the pre-merger rate at which cost increases are passed through to prices. Weighting the price changes by quantities …Using information local to the pre-merger equilibrium, we derive approximations of the expected changes in prices and …

We show that the presence of a strategic tax policy increases the incentive for a horizontal merger compared to the … a horizontal merger that has been ignored in the existing literature. In contrast to the usual belief, we also show that … a horizontal merger may benefit the consumers and the society. …

increase welfare if they reduce input prices. The lower input price shifts some input production from cost- inefficient … upstream firms to cost-efficient ones. Also, the lower input price makes upstream entry less attractive, reduces the number of …

prices increase and consumer's surplus possibly decrease. We first derive the price and the consumer's surplus of a monopoly … entry increase in price may outweight the gains from extra variety and make consumers worse off. …