[1] Goethe Univ Frankfurt, Theodor W Adorno Pl 3, D-60323 Frankfurt, Germany
[2] Leibniz Inst Financial Res SAFE, Theodor W Adorno Pl 3, D-60323 Frankfurt, Germany
[3] Karlsruhe Inst Technol, Inst Finance, Blucherstr 17, D-76185 Karlsruhe, Germany
[4] WU Vienna Univ Econ & Business, Welthandelspl 1, A-1020 Vienna, Austria
[5] VGSF, Welthandelspl 1, A-1020 Vienna, Austria