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...

Cet article expose la problématique de la volatilité des prix des matières premières, montre quels sont les moyens pour s’en protéger et explique comment les employer. Les instruments de couverture sont présentés en première section, en distinguant le type de besoin auquel ils...

The Wishart Autoregressive (WAR) process is a multivariate process of stochastic positive definite matrices. The WAR is proposed in this paper as a dynamic model for stochastic volatility matrices. It yields simple nonlinear forecasts at any horizon and has factor representation, which separates...

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...

This article analyzes the territorial resilience of the Mananjary district in Madagascar in response to tropical cyclones, focusing on the communes of Tsaravary and Tsarahafatra. The study employs a multivariate Probit model to examine three hypotheses: the relevance of resilience policies, the...

This work aims at analysing the dynamics of macroeconomic fluctuations in Cameroon, using a semi-structural VAR to determine the sources of its macroeconomic fluctuations. The results obtained point out that the macroeconomic fluctuations in Cameroon, even though influenced by external shocks,...

This article analyzes the process by which the monetary policy influences economies of the six countries of the Economic and Monetary Community of Central Africa (CEMAC) during the period 1980-2008. After having identified the channels of interest rate, credit and currency, we show that the...