Test empirique de l’hypothèse de l’efficience informationnelle faible du marché boursier Marocain à l’ère du Covid-19

Abstract

The Covid 19 caused several changes on the economic scene worldwide, the financial markets do not escape this, indeed an important instability of these markets was noticed in the various stock exchanges due to the situation of uncertainty in which the operators were.
 The period of the covid was marked in the financial markets by an overreaction of the investors to the available information, during this striking period, the Moroccan market knew a remarkable collapse which can be explained by the concerns of the operators as for the propagation of the pandemic, this leads us to question the hypothesis of the informational efficiency of the financial markets and pushes us to seek explanations as for the processes of the determinations of the prices of the financial assets
 To this end, and given the scarcity of work in this direction, this article tries to verify the hypothesis of informational efficiency of the Moroccan stock market in the context of covid19.