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Chinese Journal of Management Science ›› 2025, Vol. 33 ›› Issue (4): 1-11.doi: 10.16381/j.cnki.issn1003-207x.2022.0282

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Will Leveraged Trading Increase the Liquidity of the Stock Market? Empirical Analysis Based on Individual Stocks of Micro-Level

Haoyuan Feng1,2, Jie Wu3,4, Anqi Yu4, Kun Guo4,5()   

  1. 1.PBC School of Finance,Tsinghua University,Beijing 100083,China
    2.Research Institute of The People’s Bank of China,Beijing 100033,China
    3.Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100190,China
    4.School of Economics and Management,University of Chinese Academy of Sciences,Beijing 100190,China
    5.Research Center on Fictitious Economy and Data Science,Chinese Academy of Sciences,Beijing 100190,China
  • Received:2022-02-16 Revised:2024-09-12 Online:2025-04-25 Published:2025-04-29
  • Contact: Kun Guo E-mail:guokun@ucas.ac.cn

Abstract:

The impact of leveraged trading on stock market liquidity is investigated in this study, addressing a critical issue in financial markets where liquidity shocks have become increasingly frequent. The research is anchored by the implementation of margin trading in China since 2010, which was aimed at enhancing liquidity by amplifying securities supply and demand. However, the effects of leveraged trading on liquidity remain contentious, with varying opinions on whether market conditions are improved or deteriorated by it.The core research question is addressed by focusing on the asymmetrical effects of leveraged trading on liquidity, particularly distinguished between short-term and long-term impacts, as well as differential effects during market upturns and downturns. A panel regression model is employed to analyze individual stock data, with the liquidity index being constructed using the Amihud illiquidity measure.The empirical analysis is based on a data set comprising stocks listed on the Shanghai and Shenzhen exchanges from January 2014 to November 2021, with stocks eligible for margin trading being the focus. It is revealed by the findings that liquidity is enhanced by leveraged trading in the short term but is led to deterioration in the long term, demonstrating a "short-term vs. long-term asymmetry." Additionally, a more pronounced positive effect on liquidity is exerted by leveraged trading during significant market upturns, whereas liquidity issues are exacerbated by it during downturns, confirming the "upturn vs. downturn asymmetry." It is suggested by the extended research that the negative impacts of leverage become more significant in high-leverage market environments, indicating that excessive leverage can lead to liquidity crises.An understanding of the complex dynamics between leveraged trading and liquidity is contributed to by this research, providing insights for policymakers regarding the regulation of margin trading practices. By highlighting the dual nature of leverage as both a facilitator and a potential source of liquidity risk, the need for careful monitoring and management of leverage in financial markets is underscored by the study to mitigate systemic risks.

Key words: liquidity, leverage, margin trading, asymmetry, stock market

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