Through the statistical data and the achievement of empirical study, the high system risk character of Chinese stock market and its high challenge for securities companies at present are revealed.
根据相关的统计数据和实证研究的成果，分析了我国股票市场高系统性风险的特性和现阶段券商所面临的严峻挑战。
And the empirical study proves that our stock market is not semi-strong efficient because investors can gain abnormal returns with publicly information.
同时实证结果表明市场尚未达到半强式有效，投资者可以利用公开的信息获得超额收益。
This paper is an empirical study on the volatility of stock market in china-based on the long-term memory theory.
本文主要研究基于长记忆性的中国股票市场波动性的实证分析。股票市场充满不确定性。
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