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uncertainty of the underlying. Transferring this intuition to volatility jumps requires that in affine models the variance jump … model-free analysis shows that the local variance-of-variance describes risk-neutral variance jump expectations well across … crises, whereas its long-run stochastic mean remains at lower levels. Second, the vol-of-vol risk-premium increases to 6 …
Persistent link: https://www.econbiz.de/10012957054
mean and volatility of equity returns. Our model assumes a small risk of economic disaster that is calibrated based on … volatility and exhibit a pattern known as the volatility skew. We explain both facts using a model that can also account for the … to the model's ability both to match equity volatility and to reconcile option prices with macroeconomic data on disaster …
Persistent link: https://www.econbiz.de/10012856361
which is the expected risk neutral value of realized volatility under the discrete version is the other. This study conducts …The implied volatility from Black and Scholes (1973) model has been empirically tested for the forecasting performance … of future volatility and commonly shown to be biased. Based on the belief that the implied volatility from option prices …
Persistent link: https://www.econbiz.de/10013159120
stochastic mean-level processes to their model and by taking additional information on the future behavior of these mean …-level processes into account. The available anticipative information is modeled by an initially enlarged filtration in our paper. We … further derive pricing formulas for electricity forwards under future information and investigate the associated information …
Persistent link: https://www.econbiz.de/10012848664
Brownian motion. -- asymptotic uniformity ; local limit theorem ; volatility …
Persistent link: https://www.econbiz.de/10009728974
three popular stochastic volatility models (Heston, 1993; Bates, 1996; Heston and Nandi, 2'007, in addition to the …
Persistent link: https://www.econbiz.de/10013000731
options under low-dimensional stochastic volatility models. We derive multidimensional transforms which allow us to construct … efficient path-independent lattices for virtually all low-dimensional stochastic volatility models given in the literature … including one volatility factor-based stochastic volatility (SV) models, two volatility factors-based SV models, stochastic …
Persistent link: https://www.econbiz.de/10013152949
We apply the Malliavin calculus to the stochastic string framework and obtain a Clark-Ocone-like formula. This result allows us to rewrite the hedging portfolio explicitly in terms of the Malliavin derivative of the discounted payoff. We illustrate this new result with two applications. Firstly,...
Persistent link: https://www.econbiz.de/10012960764
the derivation of a unique variance risk premium and price of volatility risk based only on the underlying return and … volatility risk prices yield in option values in comparison to prices extracted from observed option market data. We also present … volatility dynamics for a wide class of stochastic volatility (SV) models. The SD approach also derives under similar conditions …
Persistent link: https://www.econbiz.de/10013309461
Persistent link: https://www.econbiz.de/10002569872