首页|媒体背景高管与内部人交易收益:推波助澜还是有效监督?

媒体背景高管与内部人交易收益:推波助澜还是有效监督?

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媒体是公司外部监督的重要力量,公司聘请媒体背景高管既可能监督约束内部人交易,也可能使公司更易于操纵媒体而助长机会主义行为.本文以2009-2021年中国A股上市公司为样本,研究媒体背景高管与内部人交易收益的关系.结果发现,公司聘请媒体背景高管显著减少内部人交易超额收益.机制检验表明,媒体背景高管主要通过提升投资者异常关注和缓解信息不对称降低其所在公司的内部人交易收益.进一步分析指出,年龄更小、学历更低的内部人和非独立董事更容易受到媒体背景高管的影响;公司股权制衡和地区法制化是媒体背景高管的互补性治理机制;公司前期的信息披露评级越低,媒体背景高管的治理效应越强.研究结论对于发挥媒体监督效应、完善高管团队建设,以及保护投资者权益和促进资本市场健康发展具有一定的现实意义.
Media Background Executives and Insider Trading Gains:Collusion or Effective Supervision
The media is an important force for firms'external monitoring.The employment of media-background executives by companies may either monitor and constrain insider trading or make it easier for firms to manipulate the media and promote opportunistic behavior.This paper examines the rela-tionship between media-background executives and insider trading gains in a sample of Chinese A-share listed companies from 2009 to 2021.Empirical findings show that the company's hiring of media-background executives significantly reduces excess returns from insider trading.Mechanism analysis indi-cates that media-background executives primarily lower insider trading profits by increasing abnormal investor attention and alleviating information asym-metry.Further analysis reveals that younger,less educated insiders,and non-independent directors are more influenced by media-background executives.Additionally,corporate equity balance and regional legal development serve as complementary governance mechanisms to media-background executives.Moreover,the lower the information disclosure rating of a company in the previous year,the stronger the governance function of media-background execu-tives.The findings of the study are of practical significance for utilizing the media monitoring effect,improving the construction of the executive team,as well as protecting investors'interests and promoting the healthy development of the capital market.

Insider TradingMedia BackgroundAbnormal Investor AttentionInformation AsymmetryLitigation Risk

冯荟凝、许荣、方明浩、徐星美

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中国人民大学财政金融学院/中国财政金融政策研究中心 100872

上海财经大学金融学院 200433

中国人民大学国际学院(苏州研究院) 215123

内部人交易 媒体背景 投资者异常关注 信息不对称 诉讼风险

2024

会计研究
中国会计学会

会计研究

CSTPCDCSSCICHSSCD北大核心
影响因子:6.346
ISSN:1003-2886
年,卷(期):2024.(8)