Read the working paper
INSEAD Working Paper 2013/101/FIN
This paper documents that outside the U.S. short-term returns around share repurchase announcements are positive, although only about half the size as in the U.S. Long-run abnormal returns after buyback announcements follow the same pattern in non-U.S. firms as document by prior literature for U.S. firms extending the buyback puzzle to the global level. Cross-country differences in corporate governance quality and regulatory differences can explain variation in the short- and long-run abnormal returns. Globally, long-run abnormal returns are related to an undervaluation index (Peyer and Vermaelen, 2009, RFS) consistent with the interpretation that managers are able to time the market.