The Efficiency of BRVM Tested by the Facts: Analysis of Past Share Prices — Oak Academic Publishing
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The Efficiency of BRVM Tested by the Facts: Analysis of Past Share Prices
National School of Applied Economics and Management, University of Abomey Calavi, Cotonou, Benin
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ORA Bank, Cotonou, Benin
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Laboratory for the Performance and Development of Organizations, Doctoral School of the Faculty of Economics and Management Sciences, University of Abomey Calavi, Cotonou, Benin
1 National School of Applied Economics and Management, University of Abomey Calavi, Cotonou, Benin
2 ORA Bank, Cotonou, Benin
3 Laboratory for the Performance and Development of Organizations, Doctoral School of the Faculty of Economics and Management Sciences, University of Abomey Calavi, Cotonou, Benin
In the 1980s with the financial crisis, the emergence of stock markets was far from being a fashionable phenomenon because it emanated from the demands of States who saw the establishment of stock markets as an efficient means of mobilization and allocation of domestic savings. The efficient market hypothesis has implications for investors. This efficiency, despite work on its validation, was called into question years later through behavioral finance. The conclusions of this theory have only known divergent points. We have noted an accumulation of scientific evidence of the random walk of stock prices, and the low efficiency hypothesis has become a true paradigm in the scientific community for having gained ground. The efficiency of financial markets being informational, it is worrying for the academic community since it conditions the attractiveness of research. On the regional stock market, few studies have been carried out on efficiency and have refuted the hypothesis in the weak sense. The objective of the study is to test the efficiency of the BRVM in the weak sense. Data collection was provided by the BRVM and the BCEAO, i.e. 45 values, the number of securities listed on June 30, 2022. This is the sample for which we have 1,618 daily data over a period going from January 4, 2016 to June 30, 2022. They were processed and prepared through the Box and Jenkins procedure in forecasting one-dimensional time series. According to the analyses, it appears that the regional stock market is inefficient, thus confirming the efficiency of the BRVM in the weak sense.
KeywordsMarket EfficiencyInformational Efficiency of Financial MarketsTest RunsBox and Jenkins MethodARIMA Model
Abadié, J., & Travers, D. (1981). Une approche simplifiée de la méthode de Box et Jenkins pour l'analyse et la prévision des séries temporelles unidimensionnelles (II). RAIRO—Operations Research, 15, 51-71. https://doi.org/10.1051/ro/1981150100511
Abdmoulah, W. (2009). Testing the Evolving Efficiency of 11 Arab Stock Markets (pp. 23-28). Arab Planning Institute, Kuwait, Information Center in API, Working Paper No 0907.
Ait Dani S., & Radi B. (2017). La controverse sur l’efficience des marchés financiers et l’émergence du paradigme comportemental. Moroccan Journal of Business Studies, 1 , 149-176.
Akaike, H. (1969). Fitting Autoregressive Models for Prediction. Annals of the Institute of Statistical Mathematics, 21, 243-247. https://doi.org/10.1007/BF02532251
Albouy, M. (2005). Peut-on encore croire à l’efficience des marchés financiers? Revue française de gestion, 31, 169-188. https://doi.org/10.3166/rfg.157.169-188
Alexander S. (1961). Price Movements in Speculative Markets: Trends or Random Walks, Industrial Management Review , 2, 7-26.
Alexander S. (2006). Efficience des marchés: un siècle après bachelier. Revue d’Economie Financière, 81, 107-132.
Alexander, S. (1964). Price Movements in Speculative Markets: Trends or Random Walks No. 2. Industrial Management Review, 2, 7-26.
Al-Khazali, O. M., Ding, D. K., & Pyun, C. S. (2007). A New Variance Ratio Test of Random Walk in Emerging Markets: A Revisit. Financial Review, 42, 303-317. https://doi.org/10.1111/j.1540-6288.2007.00173.x
Alwathainani, A. M. (2012). Consistent Winners and Losers. International Review of Economics & Finance, 21, 210-220. https://doi.org/10.1016/j.iref.2011.05.009
Bachelier, L. (1900). Théorie de la spéculation. Annales scientifiques de l’École normale supérieure, 17, 21-86. https://doi.org/10.24033/asens.476
Bacmann, J.-F., Dubois, M., & Isakov, D. (2001). Industries, Business Cycle and Profitability of Momentum Strategies: An International Perspective. SSRN Electronic Journal, 1-31.
Bakir, K. (2002). L’efficience des marchés financiers des pays émergents : L’exemple de la bourse de Casablanca . Master’s Thesis, University Orleans.
Batuo Enowbi, M., Guidi, F., & Mlambo, K. (2009). Testing the Weak-Form Market Efficiency and the Day of the Week Effects of Some African Countries. In 6th African Finance Journal Conference (pp. 6-10). Munich Personal RePEc Archive.
Bauer, G. H. (2004). Typologie de l’efficience des marchés. Revue du système financier , 39-42.
Bekaert, G., & Harvey, C. R. (2002). Research in Emerging Markets Finance: Looking to the Future. Emerging Markets Review, 3, 429-448. https://doi.org/10.1016/s1566-0141(02)00045-6
Benga, N. (2015). Introduction d’une société à la bourse régionale des valeurs mobilières : cas de la Sonatel . https://www.memoireonline.com/02/12/5247/Introduction-dune-societe--la-Bourse-Regionale-des-Valeurs-Mobilieres-BRVM.html
Chiny, F., & Mir, A. (2015). Tests de l’efficience du marché financier marocain. Global Journal of Management and Business Research, 15 .
Chuard, D. (2021). Efficience des marchés financiers: Analyse empirique sur le marché . Suisse Haute École de Gestion de Genève (HEG-GE).
Cootner, P. H. (1964). Cootner-1964. Industrial Management Review , 231-252.
Cowles, A. (1933). Can Stock Market Forecasters Forecast? Econometrica , 1, 309-324. https://doi.org/10.2307/1907042
Derrabi, M. (1998). Changement de microstructure et comportement des prix des actifs financiers: Cas d’un marché émergent . Association Française de Finance.
Dib, S., Dahhou, N., & Kharbouch, O. (2021). Efficience Informationnelle faible des Marchés Boursiers Africains. International Journal of Accounting, Finance, Auditing, Management and Economics, 2, 324-338. https://doi.org/10.5281/zenodo.4641476
El Bouhadi, A., & El M’Kaddem, A. (2003). Efficience informationnelle: Une application au marché boursier casablancais. Critique économique , No. 10 , 115-132.
El Khattab, Y., & Chourouk, M. (2014). Essai Sur L’efficience Informationnelle Du Marché Boursier Marocain. Global Journal of Management and Business Research: C Finance, 14, 17-29.
Elawad, Z. (1993). L’efficience du marché boursier marocain. Thèse de doctorat.
Faiteh, I., & Najab, A. (2020). Structure organisationnelle et efficience informationnelle: Cas du marché boursier marocain. Repères et Perspectives Economiques , 4 , 316-334.
Fama, E. F. (1965). Random Walks in Stock Market Prices. Financial Analysts Journal, 21, 55-59. https://doi.org/10.2469/faj.v21.n5.55
Fama, E. F., & Blume, M. E. (1966). Filter Rules and Stock-Market Trading. The Journal of Business, 39, 226-241. https://doi.org/10.1086/294849
Fama, E. F., Fisher, L., Jensen, M. C., & Roll, R. (1969). The Adjustment of Stock Prices to New Information. International Economic Review, 10, 1-21. https://doi.org/10.2307/2525569
Fettouma, M., & Loummo, B. (2020). Intelligence économique et Efficience des marchés financiers: Essai de Modélisation. International Journal of Accounting, Finance, Auditing, Management and Economics, 1, 72-85.
French, K. R., & Roll, R. (1986). Stock Return Variances. Journal of Financial Economics, 17, 5-26. https://doi.org/10.1016/0304-405x(86)90004-8
Gillet, R. (1991). Efficience informationnelle du marché boursier: vÉrification empirique et implications théoriques. Recherches économiques de Louvain, 57, 297-308. https://doi.org/10.1017/s0770451800031778
Grossman, S. J., & Stiglitz, J. E. (1980). On the Impossibility of Informationally Efficient Markets. The American Economic Review, 70, 393-408.
Hannan, E. J., & B. G. Quinn (1979). The Determination of the Order of an Autoregression. Journal of the Royal Statistical Society, Series B, 41, 190-195.
Harvey, C. R. (1995). Predictable Risk and Returns in Emerging Markets. Review of Financial Studies, 8, 773-816. https://doi.org/10.1093/rfs/8.3.773
Hassainate, M. S., & Bachisse, M. (2016). Etude économétrique de l’efficience informationnelle du marché boursier marocain: Modélisation ARIMA par séries chronologiques de l’indice MASI. Revue d’Etudes en Management et Finance d’Organisation , No. 2 , 1-18.
Ibenrissoul, N., & Aouragh, N. (2023). Étude de l’efficience du marché boursier marocain dans une période marquée par plusieurs évènements successifs. Revue Internationale des Sciences de Gestion , 6 , 1067-1091.
Jensen, M. C. (1978). Some Anomalous Evidence Regarding Market Efficiency. Journal of Financial Economics, 6, 95-101. https://doi.org/10.1016/0304-405x(78)90025-9
Kendall, M. G., & Hill, A. B. (1953). The Analysis of Economic Time-Series-Part I: Prices. Journal of the Royal Statistical Society. Series A (General), 116, 11-34. https://doi.org/10.2307/2980947
Lardic, S., & Mignon, V. (2006). L’efficience informationnelle des marchés financiers. La Découverte. https://doi.org/10.3917/dec.lardi.2006.01
LeRoy, S. F. (1973). Risk Aversion and the Martingale Property of Stock Prices. International Economic Review, 14, 436-446. https://doi.org/10.2307/2525932
Malkiel, B. G. (2003). The Efficient Market Hypothesis and Its Critics. Journal of Economic Perspectives, 17, 59-82. https://doi.org/10.1257/089533003321164958
Malkiel, B. G., & Fama, E. F. (1970). Efficient Capital Markets: A Review of Theory and Empirical Work. The Journal of Finance, 25, 383-417. https://doi.org/10.1111/j.1540-6261.1970.tb00518.x
Mecheri, K. (2016). Application de la Méthodologie de Box-Jenkins sur la série du nombre des séances d’hémodialyses . Ph.D. Thesis, Universite Kasdi Merbah.
Mignon, V. (1998). Méthodes d’estimation de l’exposant de Hurst. Application aux rentabilités boursières. Économie & prévision , 132, 193-214. https://doi.org/10.3406/ecop.1998.5909
Mignon, V. (2008). Les ambiguïtés de la théorie de l’efficience informationnelle des marchés financiers. Regards croisés sur l’économie , 3, 104-117. https://doi.org/10.3917/rce.003.0104
Mlambo, C., & Biekpe, N. (2007). The Efficient Market Hypothesis: Evidence from Ten African Stock Markets. Investment Analysts Journal, 36, 5-17. https://doi.org/10.1080/10293523.2007.11082489
Mondher, B., & Martinez, I. (2019). Hypothèse d’efficience des marchés: une étude expérimentale avec incertitude et asymétrie d’information. Revue Finance Contr a le Strat a gie , 22 , 1-26.
Mouallim, I., & Chraibi, A. (2020). Tester l’efficience informationnelle du marché boursier marocain. Revue internationale des sciences de l’organisation , 8, 111-128. https://doi.org/10.3917/riso.008.0111
Nellor David, C. L. (2008). The Rise of Africa’s “Frontier” Markets. Finance & Development , 45, 30-33.
Omran, M., & Farrar, S. V. (2006). Tests of Weak Form Efficiency in the Middle East Emerging Markets. Studies in Economics and Finance, 23, 13-26. https://doi.org/10.1108/10867370610661927
Roberts, H. (1967). Statistical versus Clinical Prediction of the Stock Market . Unpublished Manuscript, University of Chicago.
Ross, S. A., Westerfield, R. W., & Jaffe, J. F. (2007). Finance Corporate . DUNOD.
Samuelson, P. A. (1965). Proof That Properly Anticipated Prices Fluctuate Randomly. Industrial Management Review , 6, 41-49.
Sangare, A. S. (2006). Efficience des marchés: Un siècle après Bachelier. Revue d’économie financière, 81, 107-132. https://doi.org/10.3406/ecofi.2005.4015
Schwartz, S. H. (1977). Normative Influences on Altruism. In L. Berkowitz (Ed.), Advanc - es in Experimental Social Psychology (Vol. 10, pp. 221-279). Academic Press.
Sewell, M. (2008). Technical Analysis . Department of Computer Science University College London.
Solnik, B., & Jacquelin, B. (2014). Financial Markets: Portfolio and Risk Management .
Urrutia, J. L. (1995). Tests of Random Walk and Market Efficiency for Latin American Emerging Equity Markets. Journal of Financial Research, 18, 299-309. https://doi.org/10.1111/j.1475-6803.1995.tb00568.x
Van Hoang, T. H. (2009). Efficience informationnelle des marchés de l’or à Paris et à Londres, 1948-2008: Une vérification économétrique de la forme faible. Journal of Academic Financ e, 2, 77-107.