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Margin buying activity and stock market trading in China: Is there a connection?

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  • Hui Hong
  • Shitong Wu
  • Cheng Zhang

Abstract

This paper examines the dynamic linkage between margin buying activity and stock market trading in China. Built upon a multivariate DCC‐GJRGARCH model and the spillover index method, the results highlight a high dynamic conditional correlation between margin buying activity and stock market trading which shows apparent time‐varying features. Furthermore, there is a two‐way risk‐spillover relationship, with stock market trading playing a dominant role in risk transmission. More importantly, the level of risk contagion actually varies over time due to certain large external shocks. Margin buying activity tends to be a mean risk‐spillover receiver most time, whereas it acts as both a volatility risk‐spillover transmitter and a receiver over the entire sample period. The analysis thus implies that margin buying activity does have a close interrelationship with stock market trading in China, which has important implications for both regulators and investors.

Suggested Citation

  • Hui Hong & Shitong Wu & Cheng Zhang, 2025. "Margin buying activity and stock market trading in China: Is there a connection?," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 30(2), pages 1564-1582, April.
    • Handle: RePEc:wly:ijfiec:v:30:y:2025:i:2:p:1564-1582
    DOI: 10.1002/ijfe.2971
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