Short Changed? The Market's Reaction to the Short Sale Ban of 2008 Staff Working Paper 2009-23 Louis Gagnon, Jonathan Witmer Do short sales restrictions have an impact on security prices? We address this question in the context of a natural experiment surrounding the short sale ban of 2008 using a comprehensive sample of Canadian stocks cross-listed in the U.S. Content Type(s): Staff research, Staff working papers Topic(s): Financial markets, International topics JEL Code(s): F, F3, F30, G, G0, G01, G1, G18, G2, G20