Researchers, PhD Professionals and Students in Statistics and Applied Economics, welcome to your new FORTHNIGHT PAPER section! Your window dedicated to promoting ENSEA research works.


Asymmetric Mean Reversion in Low Liquid Markets: Evidence from BRVM

; this is the title of the Research paper for the 1st half of December.


This research paper was jointly authored by Professors Nathaniel GBENRO & Richard MOUSSA, who are both Lecturer-Researchers at ENSEA.

Abstract: ”This paper analyzes the mean reversion property on the West African Stock Market (in French, Bourse Régionale des Valeurs Mobilières BRVM). For this purpose, we use two daily indices: (i) the composite index (BRVMC) and (ii) the index of the 10 most liquid assets (BRVM10) collected from 3 January 2005 to 29 June 2018. We estimate an asymmetric nonlinear autoregressive model with an EGARCH innovation to account for heteroskedasticity. The results suggest the existence of a mean reversion property for both indices. The half-life time is 7 days for the composite index and 2 days for the BRVM 10 index. Furthermore, using a rolling regression technique, we show that the estimated half-life time declines slightly for the composite index”


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