between stock returns and idiosyncratic return volatility at the firm level. By allowing for the volatility of the underlying … idiosyncratic choice variables to exhibit independent switches between a high and low volatility regime, we show that the options …' constant expected returns are composed of (i) a state dependent drift term that relates positively with the volatility regime …

volatility to capture the dynamics of the S&P 500 and three European equity indices. The stochastic volatility models are the … square root variance, GARCH, and log volatility diffusions, and each is augmented with price and volatility jump extensions … that GARCH diffusions augmented with correlated price and volatility jumps outperform other specifications with respect to …

We investigate the performance of the Heston stochastic volatility model in describing the probability distribution of …

Stochastic Volatility in Financial Markets presents advanced topics in financial econometrics and theoretical finance … changes: the occurrence of sudden and persistent changes of financial markets volatility. This phenomenon, technically termed … `stochastic volatility', or `conditional heteroskedasticity', has been well known for at least 20 years; in this part, further …

heteroskedastic processes with fat-tailed innovations in returns and volatility. We provide a tractable risk neutralization framework …