the dynamics implied from the joint data but also in explaining the time series of option-implied volatility skew …

16:00) generally increases the variability of implied volatility spreads between puts and calls. In addition, it results … in considerable distortions at the outbreak of the COVID-19 pandemic and strongly affects aggregate implied volatility …

, especially on the BS implied volatility. Implied binomial trees (IBT) models capture the variations of the implied volatility … known as "volatility smile". They provide a discrete approximation to the continuous risk neutral process for the underlying … Barle and Cakici (BC). After the formation of IBT we can estimate the implied local volatility and the state price density …

In a tractable stochastic volatility model, we identify the price of the smile as the price of the unspanned risks … traded in SPX option markets. The price of the smile reflects two persistent volatility and skewness risks, which imply a …-form and structural models of stochastic volatility …

The 1987 market crash was associated with a dramatic and permanent steepening of the implied volatility curve for …

We introduce a discrete-time model for log-return dynamics with observable volatility and jumps. Our proposal extends … the class of Realized Volatility heterogeneous auto-regressive gamma (HARG) processes adding a jump component with time … compensating for equity, volatility, and jump risks, the generating function under the risk-neutral measure inherits analytical …

nature of the answer when the volatility differential is due to the systematic/priced risk. Here the difference in the … direction and magnitude of the net effect depends on the levels of asset beta and volatility and the moneyness and maturity of … nonlinear derivatives, one should pay attention to the source of volatility differential, and the sample range/mix of betas …

increase in the idiosyncratic volatility of the underlying stock. This result can not be explained by standard risk factors. It … is distinct from existing anomalies in the stock market or volatility-related option mispricing. It is consistent with … idiosyncratic volatility stocks due to their higher arbitrage costs. Controlling for limits to arbitrage proxies reduces the …