Enrique R. Arzac is Professor of Finance and Economics at the Columbia University Graduate School of Business, Director of the Merger, Buyouts, and Restructuring program for executives at Columbia Business School, and Co-Director of the Merger and Acquisitions program for executives at London Business School. He is the author of many academic articles in financial economics and has been consultant to corporations and financial institutions in North and South America and Europe. He is a director of the Adams Express Company, Petroleum and Resources Corporation and Credit Suisse Asset Management funds.