João Cunha Catolica Lisbon School of Business and Economics   Rua João de Freitas Branco, N.º 25, 5.º Dt.º Lisbon, 1500-714 Portugal   joaobbcunha@gmail.com             JEL Areas: E3 : Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) G0 : Financial Economics: General