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arXiv physics/0603147physics.soc-phq-fin.ST
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中国股票市场日总体变量的统计特性

Statistical properties of daily ensemble variables in the Chinese stock markets

Gao-Feng Gu, Wei-Xing Zhou

摘要:

本文研究了中国股票市场的动态行为,通过研究中国股票市场上股票组合的日总体收益率和日总体价格收益率的均值和标准差的统计特性来研究中国股票市场的动态行为。每日集合收益率的分布在中心具有指数形式和幂律尾部,而品种分布在大部分是对数高斯分布,然后是大品种的幂律尾部。通过去趋势波动分析、R/S分析和修正的R/S分析,我们发现集合收益存在长记忆性,品种演化存在强的长记忆性。

英文摘要:

We study dynamical behavior of the Chinese stock markets by investigating the statistical properties of daily ensemble returns and varieties defined respectively as the mean and the standard deviation of the ensemble daily price returns of a portfolio of stocks traded in China's stock markets on a given day. The distribution of the daily ensemble returns has an exponential form in the center and power-law tails, while the variety distribution is log-Gaussian in the bulk followed by a power-law tail for large varieties. Based on detrended fluctuation analysis, R/S analysis and modified R/S analysis, we find evidence of long memory in the ensemble returns and strong evidence of long memory in the evolution of variety.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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