Long-term Abnormal Returns Following Share Repurchase Announcements : Do repurchasing firms outperform the market?

Abstract: We study the long-term performance of companies listed on the Stockholm Stock Exchange that announced their intention to repurchase shares between the years of 2005 and 2013. We test the hypothesis that the market underreacts to share repurchase announcements and that repurchasing firms consequently outperform the market in the following years. We find that repurchasing firms yield a cumulative abnormal return of 15.76 percent, significant at the 1 percent level, over the four years following the announcement. To address the concern that microcaps may be driving the results, we also investigate the differences in abnormal returns between companies of different sizes. We form three portfolios based on market capitalization and find that the large, medium-sized and small companies yield 14.34 percent, 20.13 percent and 6.61 percent respectively.