Chocs exogènes et non linéarités dans les séries boursières: Application à la modélisation non paramétrique du cours de l'action Orange

This paper aims to analyze the cyclical behavior of stock exchange Orange prices from 01/03/2000 to 02/02/2017 by the research of nonlinearities through a class of heteroscedastic non parametric models. The identification of non parametric models requires the selection of the Markov coefficients and