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股票回报的可预测性及方差分解 被引量:2

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摘要 本文考察了上海、深圳两个市场A股简单算术平均指数回报率的可预测性及方差分解。分析结果表明上述指数的一个月和三个月的回报率都具有显著的可预测性。说明我国股票市场并没充分反映已有的公开信息。投资者研究股票的相关信息可以获得一定的超额收益率。同时也说明,提高信息透明度,降低信息收集成本,能够提高股票市场的信息效率。我们将预料之外的股票回报率分解为关于未来红利的信息和关于未来期望回报率的信息。分析表明,市场关于未来红利的信息和关于未来回报率的信息具有很强的正相关性。考虑到我国股票市场较高低价格波动率,这意味着投资者的期望回报的波动率也很大。
出处 《经济科学》 CSSCI 北大核心 2009年第2期108-116,共9页 Economic Science
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参考文献26

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同被引文献23

  • 1刘熀松.货币供应量对股票市场的影响研究[J].上海经济研究,2004,16(10):15-26. 被引量:20
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