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Time-varying Informational Efficiency in China's A-Share and B-Share Markets

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Xiao-Ming Li

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Abstract

This paper employs a time-varying framework to examine the informational efficiency of China's A-share and B-share markets, with a focus placed on the following issues: changing weak-form efficiency, the leverage effect, and information transmission in return volatility. We find that the A-share markets perform better than the B-share markets in terms of efficiency-improving; significant leverage effects exist in three of four markets but with different signs; and no weak and strong volatility transmissions characterise different pairs of markets. Market segmentation is also documented, as evidenced by no co-movements in the long-run behaviour of the four Chinese share markets.

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Publisher Info
Article provided by Taylor and Francis Journals in its journal Journal of Chinese Economic and Business Studies.

Volume (Year): 1 (2003)
Issue (Month): 1 (January)
Pages: 33-56
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Handle: RePEc:taf:jocebs:v:1:y:2003:i:1:p:33-56

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Keywords: A Shares B Shares Weak-form Efficiency Return Volatility China

References listed on IDEAS
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  2. John Y. Campbell & Ludger Hentschel, 1991. "No News is Good News: An Asymmetric Model of Changing Volatility in Stock Returns," NBER Working Papers 3742, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  3. Fama, Eugene F, 1970. "Efficient Capital Markets: A Review of Theory and Empirical Work," Journal of Finance, American Finance Association, vol. 25(2), pages 383-417, May. [Downloadable!] (restricted)
  4. Bergstrom, Clas & Tang, Ellen, 2001. "Price differentials between different classes of stocks: an empirical study on Chinese stock markets," Journal of Multinational Financial Management, Elsevier, vol. 11(4-5), pages 407-426, December. [Downloadable!] (restricted)
  5. Perron, Pierre, 1989. "The Great Crash, the Oil Price Shock, and the Unit Root Hypothesis," Econometrica, Econometric Society, vol. 57(6), pages 1361-1401, November. [Downloadable!] (restricted)
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  6. Perron, Pierre, 1997. "Further evidence on breaking trend functions in macroeconomic variables," Journal of Econometrics, Elsevier, vol. 80(2), pages 355-385, October. [Downloadable!] (restricted)
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  7. Rockinger, Michael & Urga, Giovanni, 2000. "The Evolution of Stock Markets in Transition Economies," Journal of Comparative Economics, Elsevier, vol. 28(3), pages 456-472, September. [Downloadable!] (restricted)
  8. Xiao-Ming Li, 2003. "China: Further Evidence on the Evolution of Stock Markets in Transition Economies," Scottish Journal of Political Economy, Scottish Economic Society, vol. 50(3), pages 341-358, 08. [Downloadable!] (restricted)
  9. Zalewska-Mitura, Anna & Hall, Stephen G., 1999. "Examining the first stages of market performance: a test for evolving market efficiency," Economics Letters, Elsevier, vol. 64(1), pages 1-12, July. [Downloadable!] (restricted)
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