本科论文摘 要我国股权分置改革后，随着股市进入全流通时代，上市公司大股东在二级市场上增持股份的现象逐渐扩大，相当数量的上市公司在大股东公示或正式实施增持后，二级市场股价上扬，这一现象引起部分投资者和学者的密切关注。那么，大股东在二级市场上增持公司股票的主要动机是什么?大股东的增持又会发生什么样的效应?本文主要从维护大股东的控股权、稳定公司股价、对市场发出积极信号、改善公司股权结构、提高公司业绩和增加公司现金流等方面探寻上市公司大股东进一步持有公司股份的动机和效应。并针对我国上市公司大股东增持比例不合理、股票价格不稳定、大股东侵占中小股东利益、现金流利用率低等方面的问题，进行探讨和总结，提出通过稳定股价、优化股权结构、扩展融资渠道、合理利用现金流、规范大股东行为等方式，为完善上市公司大股东的增持和我国股市健康发展提供了积极的参考。关键词：上市公司，大股东，增持股票 本科论文AbstractAfter the reform of non-tradable shares in China, as the stock market entered the era of full circulation, the phenomenon of major shareholders of listed companies increasing their shares in the secondary market gradually expanded, and a considerable number of listed companies increased their shares in the secondary market after the major shareholders' publicity or the official implementation of the increase, which caused some investors and scholars to pay close attention. So, what is the main motivation for major shareholders to increase their holdings in the secondary market? What kind of effect will happen to the increase of major shareholder? This paper mainly explores the motivation and effect of the major shareholders to further hold the company's shares from the aspects of maintaining the controlling interest of major shareholders, stabilizing the company's stock price, sending positive signals to the market, improving the company's shareholding structure, improving the company's performance and increasing the company's cash flow. ...
