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In this paper, we consider American option contracts when the underlying asset has stochastic dividends and stochastic volatility. We provide a full discussion of the theoretical foundations of American option valuation and exercise boundaries. We show how they depend on the various sources of...
Persistent link: https://www.econbiz.de/10005100925
Compte tenu de l'importance de l'étude de la dépendance extrême, nous avons essayé de déterminer l'approche qui semble être la meilleure pour l'étude des risques extrêmes. Pour atteindre ce but, nous avons mené une étude du coefficient de dépendance de queue pour les trois approche :...
Persistent link: https://www.econbiz.de/10008460679
We introduce a tractable class of non-affine price processes with multifrequency stochastic volatility and jumps. The specifi cations require few fixed parameters and deliver fast option pricing. One key ingredient is a tight link between jumps and volatility regimes, as asset pricing theory...
Persistent link: https://www.econbiz.de/10010505458
In this paper, we study the following models : Heath-Jarrow-Morton (1992) and Libor-Market- Model, also known as Brace-Gatarek-Musiela model (1997). We survey the extensions of these models and their representation in the Black and Scholes world. Our approach is pedagogical and is based on an...
Persistent link: https://www.econbiz.de/10005710034
En recourant de plus en plus aux modèles à forme réduite, la théorie de l'évaluation du risque de crédit se distance de plus en plus de l'ingénierie financière traditionnelle qui donne la part belle aux modèles structurels. Bien qu'ils postulent l'absence d'arbitrage, les modèles à...
Persistent link: https://www.econbiz.de/10005773136
Plusieurs gestionnaires de portefeuille pensent encore à tort qu’une couverture delta suffit pour protéger leur portefeuille contre les fluctuations des marchés financiers. Mais une augmentation marquée de la volatilité des cours boursiers les décevra dans leurs attentes. Après avoir...
Persistent link: https://www.econbiz.de/10005773140
Monte Carlo simulation has an advantage upon the binomial tree as it can take into account the multidimensions of a problem. However it convergence speed is slower. In this article, we show how this method may be improved by various means: antithetic variables, control variates and low...
Persistent link: https://www.econbiz.de/10005773152
In this paper, we simulate portfolios which aim to insure the invested capital. The object of our simulations is the duplication of the cashflows of strategies based on options. We initially show how to duplicate the cash-flows of a call by using a leveraged portfolio of stocks. After, we...
Persistent link: https://www.econbiz.de/10005773156