本文以上市公司股权结构为研究视角,试图找出适合我国国情的股权结构优化方案及相应的公司治理改进对策。 本文的“股权结构”概念包括两层含义:股权结构(国家股东、法人股东及社会公众股东的持股比例)、流通性结构及股权集中度(前五大股东持股比例)。公司治理机制包括内部治理机制和外部 In this paper, the ownership structure of listed companies as a research perspective, trying to find suitable for our country's ownership structure optimization program and the corresponding corporate governance improvement measures. The concept of “ownership structure” in this paper includes two meanings: ownership structure (shareholding of state shareholders, corporate shareholders and social public shareholders), liquidity structure and ownership concentration (percentage of shares held by the top five shareholders). Corporate governance mechanisms include internal governance mechanisms and externalities