When a major acquisition is announced, investors try to understand where the value is going to come from and whether the acquirer has a plan to achieve that value. Deals are often brought to market with one big synergy number and a statement that the deal will be "accretive" to earnings. The...

Despite the large number of event studies of mergers that have been undertaken, considerable disagreement still exists over whether mergers increase the value of the merging firms, and if so why. Most event studies measure the average returns to the acquired and acquiring companies' shareholders...