首页|监管型小股东对股价同步性的影响研究

监管型小股东对股价同步性的影响研究

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基于2016年2月中证中小投资者服务中心(简称投服中心)持股行权试点的研究场景,采用双重差分法考察投服中心对公司股价同步性的影响.研究发现:作为监管型小股东,投服中心持股行权降低了公司的股价同步性.进一步地,投服中心对股价同步性的影响在分析师关注度较低、媒体报道较少时更显著.机制检验显示,投服中心成立后上市公司的信息披露质量提高,管理层业绩预告质量改善,产生了信息效应;投服中心行权引起媒体和监管部门的关注,可减少大股东的利益侵占行为,提高中小股东参与股东大会的积极性,发挥出治理效应.
A Study of the Effect of Regulatory Minority Shareholders on Stock Price Synchronization
Based on the research scenario of the pilot shareholding exercise of China Securities In-vestor Services Center(ISC)in February 2016,this study investigates the impact of ISC on the stock price synchronicity by using the DID method.The results show that as a regulatory minority share-holder,the shareholding and exercise of the ISC reduces the stock price synchronicity of companies.Furthermore,the impact of ISC on stock price synchronicity is more significant when analysts pay less attention and media reports are less.The mechanism test shows that after the establishment of ISC,the quality of information disclosure and the quality of management's performance forecast have been improved,resulting in an information effect.The exercise of the rights of ISC has attracted the atten-tion of the media and regulatory authorities,which reduces the encroachment of large shareholders and raises the enthusiasm of small and medium-sized shareholders to participate in the shareholders'meeting,thereby exerting governance effects.

regulatory minority shareholdersChina Securities Investor Services Centerstock price synchronicityprotection of retail investors

李姝、金振、谢雁翔、耿明阳

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南开大学商学院

南开大学中国公司治理研究院

中国财政科学研究院

监管型小股东 投服中心 股价同步性 中小投资者保护

国家社会科学基金资助重点项目国家自然科学基金青年科学基金资助项目

20AGL01272202088

2024

管理学报
华中科技大学

管理学报

CSTPCDCSSCICHSSCD北大核心
影响因子:1.38
ISSN:1672-884X
年,卷(期):2024.21(2)
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