Juan J. García-Machado is a full professor of Finance at the Department of Financial Economics, Accounting and Operations Management in the Faculty of Business Administration and Tourism, University of Huelva (Spain), and Head of the Research Group in Management and Modelling of Organizations of the Andalusian Plan for Research, Development and Innovation of the Autonomous Government of Andalusia. His research interests include derivative financial markets, banking, financial crisis, risk measurement, online finance, agricultural derivatives, real options, and the valuation of firms.