Abstract In recent years, due to continuous occurrence of natural disasters all over the globe, the extent of people’s concerns on environmental protection is no longer the same like before. Investors surely will examine companies’ effectiveness and error in the environmental aspect with magnified glass. Not only investors are like that, the general public also pays close attention, thus further affecting company’s financial performance. This study investigates the effect of major events on company’s value and financial performance. Event study method is applied to study market reaction via abnormal returns to measure company value and regression analysis is used to analyze information of financial statements to explore company’s financial performance. The study finds that the five major events tested in the study all result in company’s abnormal returns and the time and extent of impact are different among different industries. As for financial performance, the effect of major events is not significant.
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