China: Further Evidence on the Evolution of Stock Markets in Transition Economies

Xiao-Ming Li

Scottish Journal of Political Economy, 2003, vol. 50, issue 3, 341-358

Abstract: We revisit the weak‐form efficiency of China's stock markets by examining its changing behaviour over the entire history of the Shanghai and Shenzhen Stock Exchanges. The Kalman Filter technique is applied to the system consisting of a time‐varying AR model and an asymmetric TGARCH equation. The estimates of predictability combined with other non‐quantifiable, evolutionary characteristics of the markets are used to infer on their efficiency. It is shown that, at their initial development stages, both the Shanghai and Shenzhen markets were inefficient. However, the past decade saw a steady convergence of the two markets towards efficiency. An abnormal leverage effect is detected for Shanghai, but no strong evidence is found that there exists the information transmission between the two markets.

Date: 2003
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