《Profitability of contrarian strategies in the Chinese stock market》
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作者:
Huai-Long Shi, Zhi-Qiang Jiang, Wei-Xing Zhou (ECUST)
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最新提交年份:
2015
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英文摘要:
This paper reexamines the profitability of loser, winner and contrarian portfolios in the Chinese stock market using monthly data of all stocks traded on the Shanghai Stock Exchange and Shenzhen Stock Exchange covering the period from January 1997 to December 2012. We find evidence of short-term and long-term contrarian profitability in the whole sample period when the estimation and holding horizons are 1 month or longer than 12 months and the annualized returns of contrarian portfolios increases with the estimation and holding horizons. We perform subperiod analysis and find that the long-term contrarian effect is significant in both bullish and bearish states while the short-term contrarian effect disappears in bullish states. We compare the performance of contrarian portfolios based on different grouping manners in the estimation period and unveil that decile grouping outperforms quintile grouping and tertile grouping, which is more evident and robust in the long run. Generally, loser portfolios and winner portfolios have positive returns and loser portfolios perform much better than winner portfolios. Both loser and winner portfolios in bullish states perform better than those in the whole sample period. In contrast, loser and winner portfolios have smaller returns in bearish states in which loser portfolio returns are significant only in the long term and winner portfolio returns become insignificant. These results are robust to the one-month skipping between the estimation and holding periods and for the two stock exchanges. Our findings show that the Chinese stock market is not efficient in the weak form. These findings also have obvious practical implications for financial practitioners.
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中文摘要:
本文利用1997年1月至2012年12月在上海证券交易所和深圳证券交易所交易的所有股票的月度数据,重新检验了中国股市中输家、赢家和反转投资组合的盈利能力。当估计和持有期限为1个月或超过12个月时,我们发现在整个样本期内存在短期和长期反转盈利能力的证据,并且反转投资组合的年化收益率随着估计和持有期限的增加而增加。我们进行了次周期分析,发现长期反转效应在看涨和看跌状态下都是显著的,而短期反转效应在看涨状态下消失。我们比较了基于不同分组方式的反向投资组合在估计期内的表现,发现十分位数分组优于五分位数分组和三分位数分组,从长期来看更为明显和稳健。一般来说,输家投资组合和赢家投资组合都有正回报,输家投资组合的表现比赢家投资组合好得多。看涨状态下的输家和赢家投资组合都比整个样本期内的投资组合表现更好。相比之下,输家和赢家的投资组合在熊市状态下的回报较小,在熊市状态下,输家的投资组合回报仅在长期内显著,赢家的投资组合回报变得微不足道。这些结果对于估计期和持有期之间的一个月跳跃以及两个证券交易所来说都是稳健的。我们的研究结果表明,中国股市的有效性不是弱式的。这些发现对金融从业者也有明显的实际意义。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Trading and Market Microstructure 交易与市场微观结构
分类描述:Market microstructure, liquidity, exchange and auction design, automated trading, agent-based modeling and market-making
市场微观结构,流动性,交易和拍卖设计,自动化交易,基于代理的建模和做市
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一级分类:Quantitative Finance 数量金融学
二级分类:Statistical Finance 统计金融
分类描述:Statistical, econometric and econophysics analyses with applications to financial markets and economic data
统计、计量经济学和经济物理学分析及其在金融市场和经济数据中的应用
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