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- Algren, Niklas, et al.
(författare)
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Panel cointegration of Chinese A and B shares
- 2009
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Ingår i: Applied Financial Economics. - : Routledge. - 0960-3107 .- 1466-4305. ; 19:23, s. 1859-1871
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Tidskriftsartikel (refereegranskat)abstract
- We study information flows in China's stock markets. By using panel data methods we test for a unit root in the price premium of domestic investors’ A shares over foreign investors’ B shares, as well as cointegration between the A- and B-share prices on the Shanghai and Shenzhen stock exchanges. We find that the A-share premia are nonstationary, and that the A- and B-share prices are not cointegrated up till January 2001. After February 2001, when domestic investors were allowed to trade B shares, the A-share premia become stationary and the A- and B-share prices cointegrated. One interesting result from the panel data analysis is that most firms’ A and B shares are cointegrated, but not all firms. Cointegration is more likely for firms with a small A-share premium, low ratio of nontradeable shares, high growth rate and large B-share market capitalization relative to the A-share market capitalization. Our findings suggest that the relaxation of the investment restrictions decreased the segmentation between the A- and B-share markets in China.
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