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which succeeds with high probability. -- Hedging ; superhedging ; Neyman Pearson lemma ; stochastic volatility ; value at … study the question what an investor can do who is unwilling to spend that much, and who is ready to use a hedging strategy …
Persistent link: https://www.econbiz.de/10009574876
This paper is devoted to the problem of hedging contingent claims in the framework of a complete two-factor jump … determine the unique hedging strategies which minimize a suitably defined shortfall risk under a given cost constraint. We … derive explicit formulas for this so-called efficient or quantile hedging strategy for a European call option. We then …
Persistent link: https://www.econbiz.de/10009621417
prices caused by stochastic volatility. -- option pricing ; autoregression ; heteroskedasticity ; GARCH ; leverage effect …
Persistent link: https://www.econbiz.de/10009580460
This paper describes a financial market modelling framework that exploits the notion of a deflator . The denominations of the deflator measured in units of primary assets form a minimal set of basic financial quantities that completely specify the overall market dynamics, where deflated asset...
Persistent link: https://www.econbiz.de/10009612031
We propose a model of correlated multi-firm default with incomplete information. While public bond investors observe issuers' assets and defaults, we suppose that they are not informed about the threshold asset level at which a firm is liquidated. Bond investors form instead a prior on these...
Persistent link: https://www.econbiz.de/10009621426
maturities and moneyness dimension is neglected. In this paper we propose to estimate the implied volatility surface at each … point in time nonparametrically and to analyze the implied volatility surface slice by slice with a common principal … study a p variate random vector of k groups, say the "volatility smile" at p different grid points of moneyness for k …
Persistent link: https://www.econbiz.de/10009613597
Stochastic Volatility (SV) models are widely used in financial applications. To decide whether standard parametric …
Persistent link: https://www.econbiz.de/10009578026
Financial models consider often stochastic processes satisfying certain differential equations. We show that the solution of a particular geometric Brownian motion observed in discrete time is asymptotically equivalent with a Gaussian white noise model.
Persistent link: https://www.econbiz.de/10009580459
The analysis of diffusion processes in financial models is crucially dependent on the form of the drift and diffusion coefficient functions. A methodology is proposed for estimating and testing coefficient functions for ergodic diffusions that are not directly observable. It is based on...
Persistent link: https://www.econbiz.de/10009613611
We establish a relation between stochastic volatility models and the class of generalized hyperbolic distributions …
Persistent link: https://www.econbiz.de/10009577459