[1] Tsinghua Univ, PBC Sch Finance, Beijing 100083, Peoples R China
[2] Univ Melbourne, Fac Business & Econ, Carlton, Vic 3010, Australia
[3] Univ Delaware, Lerner Coll Business & Econ, Newark, DE 19716 USA
[4] CUHK, Business Sch, Shenzhen Finance Inst, Sch Management & Econ, Shenzhen, Peoples R China