How nonearnings information affects a firm's market risk beta is reported. Nonearnings information is quantified by two indices: one for overall disclosure and the other for purely voluntary disclosure. The data are divided into four categories reflecting the quality of disclosure. The effect of...

For over 30 years, observers of financial markets have been puzzled by the behaviour of the market model residuals. This research offers one answer to two of the questions raised by the anomalous behaviour of the residuals. The first is the failure of cumulative abnormal residuals (CARs) to be...