Another look at the asymmetric relationship between stock returns and trading volume: evidence from the Markov-switching model

Mondher Bouattour and Anthony Miloudi
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Mondher Bouattour: Department of Finance, Excelia Business School, La Rochelle, France, LGTO - Laboratoire de Gestion et des Transitions Organisationnelles - UT3 - Université Toulouse III - Paul Sabatier - UT - Université de Toulouse
Anthony Miloudi: Department of Finance, Excelia Business School, La Rochelle, France

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Abstract: The purpose of this paper is to bridge the gap between the existing theoretical and empirical studies by examining the asymmetric return–volume relationship. Indeed, the authors aim to shed light on the return–volume linkages for French-listed small and medium-sized enterprises (SMEs) compared to blue chips across different market regimes. Design/methodology/approach This study includes both large capitalizations included in the CAC 40 index and listed SMEs included in the Euronext Growth All Share index. The Markov-switching (MS) approach is applied to understand the asymmetric relationship between trading volume and stock returns. The study investigates also the causal impact between stock returns and trading volume using regime-dependent Granger causality tests. Findings Asymmetric contemporaneous and lagged relationships between stock returns and trading volume are found for both large capitalizations and listed SMEs. However, the causality investigation reveals some differences between large capitalizations and SMEs. Indeed, causal relationships depend on market conditions and the size of the market. Research limitations/implications This paper explains the asymmetric return–volume relationship for both large capitalizations and listed SMEs by incorporating several psychological biases, such as the disposition effect, investor overconfidence and self-attribution bias. Future research needs to deepen the analysis especially for SMEs as most of the literature focuses on large capitalizations. Practical implications This empirical study has fundamental implications for portfolio management. The findings provide a deeper understanding of how trading activity impact current returns and vice versa. The authors' results constitute an important input to build and control trading strategies. Originality/value This paper fills the literature gap on the asymmetric return–volume relationship across different regimes. To the best of the authors' knowledge, the present study is the first empirical attempt to test the asymmetric return–volume relationship for listed SMEs by using an accurate MS framework.

Date: 2023-12-15
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Published in Review of Accounting and Finance, 2023, 23 (2), pp.256-279. ⟨10.1108/RAF-02-2023-0045⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:halshs-04721585

DOI: 10.1108/RAF-02-2023-0045

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