volatility of Borsa Istanbul 100 Index (BIST-100). Sample data cover the period from January 2008 to December 2017. The main … nonlinear volatility models (symmetric and asymmetric Generalized AutoRegressive Conditional Heteroskedasticity [GARCH …]-type models) were used to model and estimate BIST-100 volatility in response to political news. The findings of the paper …

idiosyncratic volatility and subsequent stock returns (the idiosyncratic volatility puzzle). We find that surprisingly many existing … puzzle in individual stocks and 78-84% of the puzzle in idiosyncratic volatility-sorted portfolios. Our methodology can be …

This study examines the relationship between excess return volatility and economic policy uncertainty in U.S using … return volatility and economic policy uncertainty. The casualty test indicates that economic policy uncertainty Granger …-causes excess return volatility. The vector error correction model result shows that previous values of economic policy uncertainty …

The idiosyncratic volatility anomaly, as first documented in Ang, Hodrick, Xing, and Zhang (2006), has received … provide evidence towards distinguishing potential explanations. Our results show that the idiosyncratic volatility anomaly is … addition, we show that the idiosyncratic volatility anomaly is not due to the market microstructure effect and cannot be …

We find that the idiosyncratic volatility (IVOL) puzzle exists only among firms that under-perform their benchmark or …

expected stock return and both the maximum daily return (MAX) and the idiosyncratic volatility (IVOL) in the five largest …

We propose a new, price-based measure of information risk called abnormal idiosyncratic volatility (AIV) that captures … information asymmetry faced by uninformed investors. AIV is the idiosyncratic volatility prior to information events in excess of …