This study attempts to analyze the effects of investor sentiment on volatility of nine stock markets, and capture the asymmetry in terms of negative and positive news during the period from January, 2004 to June, 2015. Empirical evidence from a sentiment-augmented TGARCH model demonstrates that...

We introduce a heuristic bias-adjustment for the transaction price-based realized range estimator of daily volatility in the presence of bid-ask bounce and non-trading. The adjustment is an extension of the estimator proposed in Christensen et al. (2009). We relax the assumption that all...