公司重大事故與股價反應之研究:以華航空難事件為例

• Main Authors: Shu-Li Chang, 張素莉
• Other Authors: 李堯賢
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/87199093214288186573

碩士 === 中華大學 === 工業工程與管理研究所 === 88 === This study is to discuss that when a critical event happens to company, whether the stock value change or not. The study uses China Airlines as empirical case via event study, market model, and statistic test method. The main issues include how significant does it occur abnormal return in event day? how long does it continue? and is there a overreaction phenomenon to stock value? The finding is that stock value abnormally changes in event day, and cumulative abnormal return presents a decreasing and negative phenomenon in event window. It shows that equity do decrease, but investors have no overreaction phenomenon to stock value of China Airlines.