A Revisit of Announcement Effect of Multiple Stock Repurchases：An Empirical Analysis on The Taiwan Stock Exchange

• Main Authors: An-Peng Tsou, 鄒安鵬
• Other Authors: Jong-Rong Chiou
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/45666427799989422554

碩士 === 淡江大學 === 財務金融學系碩士班 === 94 === In this study, we applied the event study methodology to discuss the carrying-out announcement effects of stock repurchases for Taiwan’s listed companies. This study also focuses on the possibility of gradual decrease effects while companies announce the repurchases frequently. Our methodology uses four-factor model which formed with Fama and French three-factor model and overreaction factor LMW to measure abnormal return of stock. The conclusions of the study are presented： We find it that when TSE companies announced stock purchases, the announcement effects do exist according to the changes of abnormal return before and after the announcement. Namely, abnormal return was always negative significantly before announcement as a result of the stock price undervalued and the abnormal return was generally positive significantly after announcement. As for the announcement effects of stock repurchases, the cumulative average abnormal return of multiple stock repurchases decrease gradually that is consistent with Lin(2001). Compared with announcement effects among industries, different industries have negative abnormal return before announcement date, but only financial industry is not significant. And after announcement date, different industries have apparent positive abnormal return. And then, for announcement effect of repurchases purpose, the performance of the purpose of maintain firm’s credit and shareholder’s right is better than that of the purpose of transfer shares to employees. The cumulative average abnormal return of companies with high repurchases ratio is smaller than that of low repurchases ratio on date -5 and -4. Moreover, high repurchase ratio is higher than low one on date 3, 4 and 5. Finally, for second announcement effect, we find that the undervaluation of companies with high carry-out ratio has been improved before announcement date, and their positive announcement effect outperform companies with low carry-out ratio after announcement date.