[1] Univ Navarra, Sch Econ & Business, Pamplona 31009, Navarra, Spain
[2] Univ Zurich, NTNU Business Sch, Dept Banking & Finance, Zurich, Switzerland
[3] Katholieke Univ Leuven, Swiss Finance Inst, CEPR, Zurich, Switzerland
[4] Goethe Univ Frankfurt, Dept Money & Macroecon, Fachbereich Wirtschaftswissensch, Frankfurt, Germany
[5] Univ Zurich, Swiss Finance Inst, Dept Banking & Finance, ECGI & CEPR, Zurich, Switzerland