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1.
We examine time‐series features of stock returns and volatility, as well as the relation between return and volatility in four of China's stock exchanges. Variance ratio tests reject the hypothesis that stock returns follow a random walk. We find evidence of long memory of returns. Application of GARCH and EGARCH models provides strong evidence of time‐varying volatility and shows volatility is highly persistent and predictable. The results of GARCH‐M do not show any relation between expected returns and expected risk. Daily trading volume used as a proxy for information arrival time has no significant explanatory power for the conditional volatility of daily returns. JEL classification: G15  相似文献   

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STOCK MARKETS     
《Africa Research Bulletin》2010,47(8):18806C-18807C
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Preferred stock is issued by many corporations in spite of its apparent disadvantages. This study explains why. A simple partial equilibrium model is presented in which preferred shares are both supplied and demanded. Stronger tax incentives in Canada than in the United States may create a positive preferred equilibrium. Empirical evidence on the relative use of preferred stock in the two countries is presented to support this hypothesis.  相似文献   

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In prior research the neglected firm effect persists even after controlling for firm size. Several recent studies show that the size effect is a stock price effect. In the present study we investigate whether excess returns on neglected stocks are a manifestation of a stock price effect. Although material evidence supporting an independent neglected firm effect is still found, results are much weaker than in prior studies. Examining a large sample of New York Stock Exchange and American Stock Exchange stocks from 1977 to 1988, we find that both January and non-January months do not have a statistically significant neglect effect after controlling for a price effect.  相似文献   

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《Africa Research Bulletin》2011,48(2):19024A-19025C
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《Africa Research Bulletin》2011,48(3):19060A-19060C
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《Africa Research Bulletin》2007,43(12):17224C-17225
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《Africa Research Bulletin》2008,45(3):17781A-17781
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《Africa Research Bulletin》2012,49(3):19490C-19491B
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《Africa Research Bulletin》2007,44(5):17412C-17413
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《Africa Research Bulletin》2008,44(12):17667C-17668
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《Africa Research Bulletin》2013,50(6):20026A-20026C
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《Africa Research Bulletin》2007,44(1):17263A-17264
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《Africa Research Bulletin》2008,45(2):17745A-17745
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《Africa Research Bulletin》2012,49(9):19704B-19704C
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