The objective of this paper is to study the contemporaneous relationship and the dynamic relationship between the stock index return and the trading volume on the Bourse Régionale des Valeurs Mobilières using daily data from 5 January 2015 to 31 October 2022. Estimations are made using the generalized method of moments (GMM) and generalized autoregressive conditional heteroscedasticity or GARCH (1,1) specifications for the contemporaneous regressions and the vector autoregressive specification for the dynamic (causal) relationship. The contemporaneous specifications show that there is no significant relationship between stock returns and trading volume. Neither of the two variables significantly influences the other. Furthermore, the dynamic specification shows a causality running from stock returns to trading volume but the reverse is not true. For the period covered by the study, the results invalidate both the mixture of distribution hypothesis and the sequential information arrival hypothesis and open the way for other considerations such as behavioral models.

The objective of this paper is to analyse the corporate governance practices in Senegalese microfinance institutions (MFIs), in order to judge their effectiveness. The question is whether in this microfinance setting, governance structures are well implemented and function as well as in conventional firms. In the MFI's literature and specifically in an African environment, there are not too much studies assessing the state of corporate governance practices. This paper aims to provide insights, using the Senegalese MFIs' setting. To reach this end, a survey is conducted over a sample of 99 MFIs. The exploratory factor analysis is used to measure our constructs, from a sand of items collected through a questionnaire. Once the constructs are built, a factorization is performed, and the Cronbach's Alpha (α) allows us the judge the effectiveness of the axes obtained. The results indicate that: -Board of directors (BODs) in Senegalese MFIs are characterized by a plurality of roles. These include a disciplinary, as well as an advisory role. -The composition of BODs in Senegalese MFIs and their mode of operation meet the optimality requirements. -Finally, the BODs in Senegalese MFIs display traits of competency, through two dimensions which are the general competence and the knowledge of the external environment. The practical implications of our results is that Senegalese MFIs have well-functioning BODs. Then being MFIs does not prevent adherence to the best corporate governance practices. The existence of well-functioning BODs should translate into improved financial and social performances.