1. Department of Economics and Business Studies, Università del Piemonte Orientale ‘Amedeo Avogadro’, via E. Perrone 18, Novara, Italy
2. Centre for Industrial and Applied Mathematics, School of Information Technology and Mathematical Sciences, University of South Australia, Adelaide, Australia
3. Finance Discipline Group, UTS Business School, University of Technology, Sydney, Australia
4. Faculty of Finance, Cass Business School, City University, London, UK