本研究以1994至2011年間,發行國內可轉債與海外可轉債且曾重設轉換價格之台灣上市(櫃)公司為研究樣本,利用事件研究法檢定國內可轉債與海外可轉債在價格重設前後10個交易日之普通股股價變化。 全部樣本結果顯示可轉換公司債轉換價格重設日前後存在顯著之負向異常反應,顯見投資者對此可轉換公司債價格重設訊息抱持負面的看法。不過,比較國內可轉債與海外可轉債,可發現股價只有對海外可轉債轉換價格重設事件產生負向反應,且特別是對上市公司海外可轉債樣本持續顯著負面反應。關於普通股股價對國內可轉債價格重設事件之反應程度與方向,實證結果呈現並無顥著影響關連。
This paper adopts the listed companies that issued domestic convertible bonds and Euro-convertible bonds to be research samples in Taiwan during 1994 to 2011. The study uses the event study method to explore there are abnormal returns to the common stock price behavior around conversion price reset of convertible bonds. The results show that there are significant negative abnormal returns around conversion price reset of convertible bonds in all samples. However, the study finds that only Euro-convertible bonds’ conversion price reset has a significant negative effect on common stock returns. In particular, there is a persistent and significant negative effect to the sample of Euro-convertible bonds of listed companies on Taiwan Stock Exchange. The sample of domestic convertible bonds does not affect the common stock price.