Browsing by Author "Tyavambiza, Takawira"

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    An Empirical Test of the Validity of the Capital Asset Pricing Model on the Zimbabwe Stock Exchange
    (2016) Nyangara, Melody; Nyangara, Davies; Ndlovu, Godfrey; Tyavambiza, Takawira
    We test the empirical validity of the capital asset pricing model (CAPM) on the Zimbabwe Stock Exchange (ZSE) using cross-sectional stock returns on 31 stocks listed on the ZSE between March 2009 and February 2014. We conclude that, although the explanatory power of beta tends to fall rapidly for prediction horizons >6 months, beta significantly explains average monthly stock returns on the ZSE. Tests to validate the CAPM reject its validity for the ZSE however, primarily due to liquidity and skewness anomalies. We nevertheless fail to detect any size effects. There is encouraging evidence to suggest that the CAPM performs reasonably well in predicting average monthly returns over prediction horizons of between 3 and 6 months. We recommend that investors and analysts must exercise extreme caution in applying the CAPM. Furthermore, we discourage strategies based on the existence of a size premium on the ZSE. Instead, investors may consider neglected and negatively skewed stocks, albeit over appropriate horizons. Further research on other African Stock Markets will help verify if the optimal performance range of the CAPM is indeed 3-6 months. Development of standard continental proxy market portfolios will also improve the estimation of betas and enhance results of cross-country tests of the CAPM.
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    Financial and Monetary Reforms and the Finance-Growth Relationship in Zimbabwe
    (EconJournals, 2015) Tyavambiza, Takawira; Nyangara, Davis
    The study employs the Granger causality test in a multivariate cointegration and error correction environment to examine the relationship between financial development and economic growth in Zimbabwe. Using annual data from 1980 to 2012, and after controlling for financial and monetary reforms, the study demonstrates a unidirectional causal relationship that runs from financial development to economic growth. The evidence shows that financial development; banking sector development in particular, is not a passive response to economic growth. Instead, it is a critical tool for accelerating economic growth. Policy implications of this evidence are that the banking sector in Zimbabwe must be supported with policies that encourage credit expansion and innovation to support economic growth. The equities market, on the other hand, requires more investor-friendly innovations and policies, especially with regard to trading efficiency and foreign investor participation in the primary market. In combination, these policy interventions should be able to magnify the positive effect of financial development on economic growth.