Can market state and market volatility explain time-varying momentum profits in South Africa?

Mwangele Kaluba and Yudhvir Seetharam

International Journal of Emerging Markets, 2022, vol. 18, issue 10, 4363-4382

Abstract: Purpose - While the momentum anomaly is prevalent in South Africa, few have examined the reasons influencing it. This study examines whether momentum profits vary through time and are affected by the state of the market and market volatility between 1998 and 2019. Design/methodology/approach - The authors consider combinations of portfolio construction, such as the lookback period, weighting scheme, measure of volatility and the volatility window period. They further examine the interaction of momentum with sentiment, default risk and semi-deviation as a measure of risk, as a means of testing whether behavioural factors have significant influence. Findings - The results generally show that neither volatility nor market state has explanatory power on momentum profits. Originality/value - These results make the momentum anomaly in South Africa an even greater mystery than before as they do not conform to the existing literature from developed economies. The authors do, however, find that default risk is a significant predictor of momentum profits, which is a useful additional factor for those fund managers who utilise momentum strategies. This implies that a fundamental factor, default risk, is a potential explanation for the market-related momentum anomaly.

Keywords: Momentum; Volatility; South Africa; Emerging markets; G11; G12; G14; G40 (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eme:ijoemp:ijoem-03-2021-0406

DOI: 10.1108/IJOEM-03-2021-0406

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