Accounting and Finance

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Herding in frontier markets: Evidence from African stock exchanges
(JEL classification, 2016) Komba, Gabriel Vitus; Komba, Gabriel Vitus; Yilmaz Guneya,; Vasileios Kallinterakisb
We investigate herding in eight African frontier stock markets between January 2002 and July 2015, given the limited evidence on herding in frontier markets. Herding appears significant throughout the 2002-2015 period for all markets, with smaller stocks found to enhance its magnitude. Herding entails no clear asymmetries conditional on market performance; conversely, it appears notably asymmetric when conditioned on market volatility, as it is significant (or stronger) mainly during low volatility days, without this pattern, however, surviving when accounting for the 2007-2009 crisis. The US and South African markets motivate herding on a small number of occasions only, while the return dynamics of a regional economic initiative’s member-markets are found to induce herding in each other very rarely, thus demonstrating that investors’ behaviour in markets with low integration in the international financial system is not significantly affected by non-domestic factors.
Testing for the weak-form market efficiency of the Dar es Salaam Stock Exchange
(Elsevier, 2016) Komba, Gabriel Vitus; Guney, Yilmaz
This paper investigates into the weak-form efficiency of the Dar es Salaam Stock Exchange (DSE), a frontier market, in Tanzania. The study covers the period from January 2007 to December 2014. To establish the consistency and robustness of the obtained conclusions, we employ different tests (i.e., Augmented Dickey-Fuller test, Variance-ratio test, and Ranks and Sign test) to examine the hypothesis that the returns based on the price and return indices follow a random walk process. The results provide convincing evidence that returns series based on price indices indeed follow a random walk. However, when the same tests are performed for the returns based on the return indices, the findings reveal that these series are not weak-form efficient, suggesting that investors might be able to predict future returns based on the current and past data.
Factors influencing implementation of accrual based international public sector accounting standards in Tanzanian local government authorities
(Asian Journal of Economics, Business and Accounting, 2019) Komba, Gabriel Vitus; Matekele, Charles K.
This research examined the factors influencing the implementation of accrual-based International Public Sector Accounting Standards (IPSAS) in the Tanzanian Local Government Authorities (LGAs). The study adopted a survey design. Based on extant literature, a structured questionnaire was developed. Then a drop-and-pick method was employed to administer the survey instrument to accountants and auditors from the LGAs in Tanzania. We successfully obtained 150 useful responses and applied factor analysis to determine the factors followed by multiple regression analysis. According to the factor analysis performed, 15 factors were identified as the factors influencing the implementation of accrual-based IPSAS. Such factors include staff experience, understanding, and skills, in-house training necessity, involvement of professional accountants with high ethical conduct and hope for future business opportunities including attraction of development partners. The study also examined how the identified factors affect the implementation of accrual-based IPSAS in the LGAs. Our findings show that staff experience, in-house training necessity, understanding and skills, involvement of professional accountants and publication of financial statements with standardized format; significantly influence implementation of accrual-based IPSAS in the LGAs. Other factors like sanctions by regulatory authorities, pressure from development partners and adequate implementation policies were also reported to have significant impact. Since this research involved 7 LGAs out of 185 found in Tanzania Mainland, we recommend further studies to take into account the rest of the LGAs in Tanzania and abroad.
Herding in frontier markets: Evidence from African stock exchanges
(Journal of International Financial Markets, Institutions & Money, 2017) Komba, Gabriel Vitus; Guney, Yilmaz; Kallinterakis, Vasileios
We investigate herding in eight African frontier stock markets between January 2002 and July 2015, given the limited evidence on herding in frontier markets. Herding appears significant throughout the 2002-2015 period for all markets, with smaller stocks found to enhance its magnitude. Herding entails no clear asymmetries conditional on market performance; conversely, it appears notably asymmetric when conditioned on market volatility, as it is significant (or stronger) mainly during low volatility days, without this pattern, however, surviving when accounting for the 2007-2009 crisis. The US and South African markets motivate herding on a small number of occasions only, while the return dynamics of a regional economic initiative’s member markets are found to induce herding in each other very rarely, thus demonstrating that investors’ behaviour in markets with low integration in the international financial system is not significantly affected by non-domestic factors.

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