Assuming a Pareto-type distribution of bank sizes, we investigate the effect of changes in Zipf's exponent ([alpha]) and the sample size on the behavior of different concentration indices, such as the 3-bank concentration ratio, the Herfindahl-Hirschman index and the top 5%-concentration ratio....

This paper investigates the abnormal share return dispersion occurring when companies announce their interim or final earnings. Whereas, prior research has focused on abnormal returns, little attention has been given to investigating the dispersion of the abnormal returns. We find strong...

This paper investigates the abnormal share return dispersion occurring when companies announce their interim or final earnings. Whereas, prior research has focused on abnormal returns, little attention has been given to investigating the dispersion of the abnormal returns. We find strong...