Recent studies suggest an increasing trend in return idiosyncratic volatility and a ‘puzzling’ negative relationship between idiosyncratic and total volatility and stock returns. We investigate in an emerging market, the time-series behaviour of total and idiosyncratic volatility and their...

A recent theory of information uncertainty (IU) postulates a negative (positive) relationship between IU and future returns (momentum returns). We extend this theory by showing that its predictions could be conditioned by differences in behavioral biases induced by culture. We find that greater...