Investigating the economic role of mergers

We investigate the economic role of mergers by performing a comparative study of mergers and internal corporate investment at the industry and firm levels. We find strong evidence that merger activity clusters through time by industry, whereas internal investment does not. Mergers play both an "expansionary" and "contractionary" role in industry restructuring. During the 1970s and 1980s, excess capacity drove industry consolidation through mergers, while peak capacity utilization triggered industry expansion through non-merger investments. In the 1990s, this phenomenon is reversed, as industries with strong growth prospects, high profitability, and near capacity experience the most intense merger activity. (C) 2002 Elsevier Science B.V. All rights reserved.