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The presented paper analyzes share repurchase announcements of currently DAX, MDAX and SDAX listed companies during the 20-year span of 1998 to 2018. The findings show a significantly lower average abnormal return on the announcement day (1.937%) and a lower cumulative average abnormal return around the announcement day (1.943%) than previous studies reported. Moreover, the medium-term cumulative abnormal returns are found to be significant and positive (2.70%). This study finds evidence for the signaling hypothesis, which states the intention behind the repurchase of a company being a perceived undervaluation.
The changes between Taiwan and China since 1979 have closer both countries in many aspects. This study seeks for evidence proving the impact of cross-strait political events on Taiwan Stock Market. Major events from 1995 to 2017 are identified and examined with event study using market model and both parametric and non-parametric test. By defining 19 events into two groups- Good news and Bad news, the results present significant abnormal returns on event day [0] or after. This suggests that there is significant impact of cross-strait political events on Taiwan Stock Market. Moreover, due to the limited amount of events, this study can only weakly support that Taiwan Stock Market is semi-strong form.