The Impact of Unexpected Earnings and Dividends on Abnormal Returns to Equity

This paper contributes to the empirical literature which documents the existence of a positive association between unexpected earnings and/or dividend announcements and abnormal returns to equity. The paper addresses some of the methodological limitations evident in the literature. In particular, one methodological difficulty encountered by previous studies is that since earnings and dividend announcements are usually made contemporaneously it is difficult to assess the marginal effect of either announcement on security returns. This problem is dealt with by constructing portfolios of securities which are randomized with respect to unexpected earnings (dividends), but which are systematically ranked on unexpected dividends (earnings). The results indicate that unexpected earnings announcements have a significant marginal impact on abnormal returns. In addition, there is evidence of an impact of unexpected dividends on returns, but it is weaker than unexpected earnings.