This paper investigates the dynamic relation between information-based trading of a stock and its daily return and risk. It develops a theoretical model to motivate the regression specifications for empirical analysis. Based on two samples of stocks, we demonstrate that the expected trading...

The ancient Chinese Almanac lists days that are (in)auspicious for certain actions or events. We find that the initial returns for Initial Public Offerings (IPO), an essential corporate event, are significantly lower on days listed by the Almanac as unlucky. The effect of calendar superstition...