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-style options. We introduce a skewed version of the Student-t distribution, whose main advantage is that its shape depends on only … four parameters, of which two directly control for the levels of skewness and kurtosis. We can thus easily vary parameters … to compare different distributions and use the parameters as inputs to price other options. We explain the method …
Persistent link: https://www.econbiz.de/10004969837
We derive an estimator for Black-Scholes-Merton implied volatility that, when compared to the familiar Corrado & Miller [JBaF, 1996] estimator, has substantially higher approximation accuracy and extends over a wider region of moneyness.
Persistent link: https://www.econbiz.de/10010730867
We propose a simple model in which realized stock market return volatility and implied volatility backed out of option prices are subject to common level shifts corresponding to movements between bull and bear markets. The model is estimated using the Kalman filter in a generalization to the...
Persistent link: https://www.econbiz.de/10008549066
The statistics that summarise probability density functions(pdfs) implied from option prices can be used to assess market expectations about future uncertainty, asymmetry and the probability of extreme movements in asset prices. A time-series analysis of these statistics for equity index and...
Persistent link: https://www.econbiz.de/10008493887
This paper provides a more accurate formula for estimating the implied volatilities for at-the-money calls than the existing formula as developed previously by Brenner and Subrahmanyam (1988). New formulas are also given for estimating the implied volatilities of in- or out-of-the-money calls....
Persistent link: https://www.econbiz.de/10005181704
This paper proposes a new explanation for the smile and skewness effects in implied volatilities. Starting from a …
Persistent link: https://www.econbiz.de/10004968203
financial crisis. To this end, we derive risk-neutral densities from the implied volatilities of FX options, which approximate …-of-sample predictive power of indicators. The forecasting results suggest that models based on FX options are inferior to the random walk …
Persistent link: https://www.econbiz.de/10010322178
, predictable, and options appear calibrated to incorporate information about future jumps in all three markets. …
Persistent link: https://www.econbiz.de/10010290353
Recent developments allow a nonparametric separation of the continuous sample path component and the jump component of realized volatility. The jump component has very different time series properties than the continuous component, and accounting for this allows improved forecasting of future...
Persistent link: https://www.econbiz.de/10010290416
Persistent link: https://www.econbiz.de/10011289355