Possibility of Earning Abnormal Return Based on Post Earnings Announcements Drift
The announcement of the unexpected adjustment of earnings per share by corporations is important news and information in evaluating investors' future earnings and thus determining their price. There has been a lot of research around the world on post earnings announcements drift of stock price and most of these findings suggest additional abnormal returns if post earnings announcements trading strategies are applied. In this study, based on the sample of Tehran Stock Exchange companies for the years 2009 to 2018, we specifically examine possibility of earning abnormal return based of post earnings announcements drift. We divide the EPS adjustment groups into six groups, the first three groups are related to negative earnings adjustment and the next three groups are to positive earnings adjustment; Group 1 represents the most negative earnings adjustment and Group 6 represents the largest positive earnings adjustment. Significance of the results was evaluated using by the Newy-West t-test. Results show that: abnormal return can be earned on the Tehran Stock Exchange based on post earnings announcements for positive adjustments in the short and long term, especially for the adjustment group between 10% and 40%. And can be earned are for negative adjustments for the short term, especially for adjustments between 10 and 40 percent
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