The market’s line estimation implicitly assumes that its parameters are constant over time. Investors, who use the beta of this line for build their portfolio, have a similar behavior whatever their investment horizon. We discuss this hypothesis in this article using the technique of wavelets...

The Rolling-Regression are currently used to study the parameters stability over time. In finance, we can analyse the time evolutions of systematic risk relaxing the constant-Beta hypothesis. This method can be associated with a wavelet decomposition of the variables in order to the parameters...

The main objective of this article is to analyse the impact of governance mechanisms in general and their interactions in particular on the performance of microfinance institutions while taking into account their legal forms. To achieve this objective, a multiple regression was carried out on a...