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Decomposing the Bid-Ask Spread in a Segmented Equity Market: Analyzing Chinese A Shares Versus B Shares

Author

Listed:
  • Zhian Chen
  • Xin Cui

Abstract

Because of a regulatory policy change in February 2001, the segmentation of the Chinese stock market significantly decreased. Using this event, we show that the Chinese A-share market is more informationally efficient than the B-share market, both before and after the opening of the B-share market. Furthermore, after the event, both the adverse selection and the order-processing component of B shares decreased, as a result of a larger investor base and possibly a lower proportion of informed investors. This study thus sheds new light on the market segmentation and its effect on transaction costs.

Suggested Citation

  • Zhian Chen & Xin Cui, 2012. "Decomposing the Bid-Ask Spread in a Segmented Equity Market: Analyzing Chinese A Shares Versus B Shares," Emerging Markets Finance and Trade, Taylor & Francis Journals, vol. 48(4), pages 30-49, July.
    • Handle: RePEc:mes:emfitr:v:48:y:2012:i:4:p:30-49
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    Citations

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    Cited by:

    1. Donald Lien & Chun-Da Chen, 2020. "B-share discount puzzle in China: a revisit of dual-share firms," Review of Managerial Science, Springer, vol. 14(5), pages 1047-1075, October.
    2. Chen, Jun & Kadapakkam, Palani-Rajan & Yang, Ting, 2016. "Short selling, margin trading, and the incorporation of new information into prices," International Review of Financial Analysis, Elsevier, vol. 44(C), pages 1-17.

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