Vérification empirique de l’efficience informationnelle sur les marchés financiers de la Bourse Régionale des Valeurs Mobilières (BRVM), du Ghana Stock Exchange (GSE) et du Nigeria Stock Exchange (NSE) (notice n° 1037235)
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| fixed length control field | 03463cam a2200301 4500500 |
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| control field | 20250125174237.0 |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | fre |
| 042 ## - AUTHENTICATION CODE | |
| Authentication code | dc |
| 100 10 - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Diop, Mor Welle |
| Relator term | author |
| 245 00 - TITLE STATEMENT | |
| Title | Vérification empirique de l’efficience informationnelle sur les marchés financiers de la Bourse Régionale des Valeurs Mobilières (BRVM), du Ghana Stock Exchange (GSE) et du Nigeria Stock Exchange (NSE) |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Date of publication, distribution, etc. | 2023.<br/> |
| 500 ## - GENERAL NOTE | |
| General note | 90 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | L’objectif de cet article est de vérifier empiriquement la théorie de l’efficience informationnelle sur les marchés boursiers de la bourse régionale des valeurs mobilières (BRVM), du Ghana Stock Exchange et du Nigeria Stock Exchange. Nous avons utilisé divers tests paramétriques et non paramétriques pour tester empiriquement l’efficience informationnelle sur les marchés boursiers de la Communauté Economique des Etats de l’Afrique de l’Ouest (CEDEAO). L’approche de Lo et MacKinlay (1988) qui consiste à tester la forme faible de l’efficience informationnelle par le ratio de variance a été utilisé en plus de l’analyse graphique par les hypothèses d’homoscedasticité et d’heteroscedasticité. Les tests de stationnarité de Dickey Fuller augmenté et de Phillips Perron appliqués aux rendements des indices de référence ont aussi servi pour la vérification de l’hypothèse de la marche aléatoire. En outre, nous avons appliqué les tests de Ljung Box, de Box Pierce et de Runs pour mieux affiner nos résultats de recherche. Les résultats de tous les tests paramétriques et non paramétriques convergent et indiquent une inefficience au sens faible des marchés de la BRVM, du Ghana et du Nigéria. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The objective of this paper is to empirically test the theory of informational efficiency on the stock markets of the Regional Stock Exchange (BRVM), the Ghana Stock Exchange and the Nigeria Stock Exchange. We used various parametric and non-parametric tests to empirically test informational efficiency on the stock markets of the Economic Community of West African States (ECOWAS). The approach of Lo and MacKinlay (1988) which consists in testing the weak form of informational efficiency by the variance ratio was used in addition to the graphical analysis by the hypotheses of homoscedasticity and heteroscedasticity. The Augmented Dickey Fuller and Phillips Perron stationarity tests applied to the benchmark returns were also used to test the random walk hypothesis. In addition, we applied the Ljung Box, Box Pierce and Runs tests to further refine our research results. The results of all parametric and non-parametric tests converge and indicate inefficiency in the weak sense of the BRVM, Ghana and Nigeria markets. |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | efficience informationnelle |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Nigeria Stock Exchange |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Ghana Stock Exchange |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | marche aléatoire |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Bourse Régionale des Valeurs Mobilières (BRVM) |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | informational efficiency |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Nigeria Stock Exchange |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | random market |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Ghana Stock Exchange |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Bourse Régionale des Valeurs Mobilières (BRVM) |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mbengue, Mohamed Lamine |
| Relator term | author |
| 786 0# - DATA SOURCE ENTRY | |
| Note | Revue internationale des sciences de l'organisation | 15 | 1 | 2023-06-27 | p. 39-60 |
| 856 41 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://shs.cairn.info/revue-internationale-des-sciences-de-l-organisation-2023-1-page-39?lang=fr&redirect-ssocas=7080">https://shs.cairn.info/revue-internationale-des-sciences-de-l-organisation-2023-1-page-39?lang=fr&redirect-ssocas=7080</a> |
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