股市信息噪声是指在信息不对称情况下，导致股票均衡价格与其内在价值偏离的非理性信息。
The securities noise is not a rational information which makes the equilibrium price of stock drift off its internal price under the environment of information unsymmetry.
研究证实，噪声和噪声交易者对证券价格的影响是系统性的，这种影响会波及大部分证券甚至整个证券市场。
These studies show that the impact of noise and noise traders on price is systematic and could spread to most securities, even the whole security market.
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