Stock Return Response to Competitor Bankruptcy: Perspective of Antitakeover Protection Huimin Chung Graduate Institute of Finance, National Chiao Tung University 1001 University Road, Hsinchu, 300, Taiwan ROC chunghui@mail.nctu.edu.tw Ying-Sui Yang Graduate Institute of Finance, National Chiao Tung University 1001 University Road, Hsinchu, 300, Taiwan ROC eephone@hotmail.com Chih-Liang Liu Department of Finance, National Yunlin University of Science and Technology 123, University Rd. Sec. 3, Douliou, Yunlin 64002, Taiwan ROC chlliu@yuntech.edu.tw ABSTRACT We investigate the stock return response to bankruptcy announcements of competing firms by examining the relationship between the level of antitakeover provisions and the cumulative abnormal return when another firm within the same industry is faced with bailout problems. We posit that firms with good corporate governance would take fewer antitakeover provisions and benefit from higher abnormal returns when industry rivals go bankrupt. In addition, we find that the positive stock return response to bankruptcy announcements is more profound after the Sarbanes-Oxley Act. Keywords: Corporate governance; Takeover provisions; Bankruptcy announcement effect; Contagion effect; Competitive effect. Corresponding Author. We would like to gratefully acknowledge the financial support provided by the MoE ATU Plan of the National Chiao Tung University. 0