The behavioural finance paradigm and the adaptive market hypothesis
Zakhiyya Yousuf ORCID ↗ · Daniel Makina ORCID ↗
International Journal of Finance & Banking Studies · 2022 · Vol. 11 / Issue 2 · 34-48
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Abstract
This study tests for the applicability of the Adaptive Market Hypothesis (AMH) and Bounded rationality theories on the Johannesburg Stock Exchange (JSE). This is in order to determine the influence of behavioural risk factors on the efficiency of the stock market. Behavioural theories show a gap in the theory of Efficient Market Hypothesis. Using quantile regression, our study established the applicability of the Adaptive Market Hypothesis on the JSE. Past market returns were shown to be significant in predicting future returns and thus did not follow a random walk. The lagged return increased at higher quantiles and differed with changes in market conditions (i.e. pre-financial crisis, financial crisis and post-financial crisis). Thus, the predictability of returns varies with a change in market conditions. This paper is focused on only on the Johannesburg stock exchange in South Africa, more specifically the movement is the all share index. The findings should be able to be applied to emerging and developed economies. Business confidence is found to have a negative relationship with returns showing a lag in time for sentiment to be incorporated in prices. In contrast, consumer confidence is found to have a positive relationship with returns. In summary, investors are shown to be influenced by fundamental and behavioural factors.
Keywords: {'name': 'Adaptive market hypothesis'}, {'name': 'EMH'}, {'name': 'Behavioural finance'}, {'name': 'Bounded rationality'}, {'name': 'quantile regression'}, {'name': 'jse'}
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Zakhiyya Yousuf
Affiliation not supplied
Daniel Makina
Affiliation not supplied
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