On the basis of linear model of market share in incomplete market, this paper presents hypothesis conditions for security market total wealth once more.

在不完全市场中市场份额的线性模型基础上，重新提出了证券市场总财富的假设条件。

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Then it makes a design, puts forward hypothesis, constructs relevant model and selects 156 A-share enterprises of Shanghai stokes market 180 sample share during 2005-2006 as a research sample.

其次进行研究设计，提出研究假设，并且构建相对应计量模型，选取2005——2006年上证180样本股中156个A股企业作为有效研究样本。

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