1. School of Mathematics and Statistics, University of Sydney, Camperdown, NSW, Australia;
2. Department of Finance, Asia University, Taichung, Taiwan;
3. School of Business and Law, Edith Cowan University, Joondalup, WA, Australia;
4. Department of Finance, College of Management, Asia University, Taichung, Taiwan;
5. Discipline of Business Analytics, University of Sydney Business School, Darlington, NSW, Australia;
6. Econometric Institute, Erasmus School of Economics, Erasmus University Rotterdam, Rotterdam, The Netherlands;
7. Department of Economic Analysis and ICAE, Complutense University of Madrid, Madrid, Spain;
8. Department of Mathematics and Statistics, University of Canterbury, Christchurch, New Zealand;