Showing 1 - 10 of 136
In this paper the performance of locally risk-minimizing hedge strategies for European options in stochastic volatility … large class of diffusion-type stochastic volatility models, and they are as easy to implement as usual delta hedges. Our … periods as well as in different markets). The more skewed the market and the more out-of-the-money the option, the higher the …
Persistent link: https://www.econbiz.de/10005858246
existing methods lies in its straightforward application to models with stochastic volatility and stochastic interest rates. We … exploit this advantage by providing an analysis of the impact of volatility mean-reversion, volatility of volatility, and …
Persistent link: https://www.econbiz.de/10005857779
In this paper we construct arbitrage-free market models of stochastic volatility type for one stock, one bank account … maturities in a natural way. Option prices are explicit functions of the local implied volatilities and price level, and absence … provide a class of explicit examples satisfying the no-arbitrage conditions. This allows us to construct arbitrage-free multi-option …
Persistent link: https://www.econbiz.de/10005857780
and economically strong effect on the implied volatility of currency options, on the shap e of the implied volatility … smile, on the volatility risk-premia, and on future currency returns. We do cument that the volatility of macro economic …
Persistent link: https://www.econbiz.de/10005858023
volatility and risk aversion that are similar to the ones observed in the data. In addition, the model produces an implied …
Persistent link: https://www.econbiz.de/10005858509
We derive a closed-form asymptotic expansion formula for option implied volatility under a two-factor jump … free of the unobserved spot volatility. Therefore, the model can be calibrated on option data pooled across different …-diffusion stochastic volatility model when time-to-maturity is small. Based on numerical experiments we describe the range of time …
Persistent link: https://www.econbiz.de/10005858590
. The analysis is performed in the framework of a two-factor model with local and stochastic volatility. We describe an … algorithm for building the power series approximation of implied volatility. In the case of CEV volatility of volatility we …
Persistent link: https://www.econbiz.de/10005858924
In June 2003 Swiss banks held over CHF 500 billion in mortgages. This important segment accounts for about 63% of all loan portfolios of Swiss banks. Since default insurance is not common in Switzerland, the corresponding risks are a severe threat for the health of the financial system. We...
Persistent link: https://www.econbiz.de/10005858102
In this paper we present a modelling framework for portfolio credit risk which incorporates the dependence between risk-free interest-rates and the default loss process. The contribution in this approach is that - besides the traditional diffusion based covariation between loss intensities and...
Persistent link: https://www.econbiz.de/10005858332
The paper investigates how buyer-supplier firm-specific relationships affect security prices. Starting from the empirical inconsistencies associated with some standard structural models we propose a structural model of firm dependence in a vertically connected network of firms based on cash flow...
Persistent link: https://www.econbiz.de/10005858385