Cyree, Ken B.; DeGennaro, Ramon P. - Federal Reserve Bank of Atlanta - 2001
variances, and firm-specific event periods. Their method, which nests traditional methods, also permits systematic risk to … systematic risk of the acquiring firms, significant ARCH effects, and an event period that ends before the date of the … cannot account for information leakage may be biased, and (2) changes in systematic risk can occur in the absence of abnormal …