We investigate the effectiveness of several well-known parametric and non-parametric event study test statistics with security price data from the major Asia-Pacific security markets. Extensive Monte Carlo simulation experiments with actual daily security returns data reveal that the parametric...

We examine the effect of options trading volume on the stock price response to earnings announcements over the period 1996-2007. Contrary to previous studies, we find no significant difference in the immediate stock price response to earnings information announcements in samples split between...