商业研究

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新媒体治理与股价崩盘风险研究

孙艳梅,方梦然,阎晴云   

  1. (对外经济贸易大学 金融学院,北京 100029)
  • 收稿日期:2018-05-15 出版日期:2018-09-10
  • 作者简介:孙艳梅(1980-),女,河北邯郸人,对外经济贸易大学金融学院副教授,经济学博士,研究方向:资产定价、公司金融、媒体与金融;方梦然(1990-),女,浙江宁波人,对外经济贸易大学金融学院博士研究生,研究方向:公司金融、公司治理;阎晴云(1992-),女,广西桂林人,对外经济贸易大学金融学院硕士研究生,研究方向:公司金融、媒体与金融。
  • 基金资助:
    教育部人文社科青年基金项目,项目编号:17YJC790136;国家自然科学基金青年项目,项目编号:71202026;对外经济贸易大学中央高校基本科研业务费专项资金项目,项目编号:CXTD7-04。

New Media Governance and Stock Price Crash Risk

SUN Yan- mei, FANG Meng- ran, YAN Qing- yun   

  1. (School of Banking and Finance,University of International Business and Economics, Beijing 100029,China)
  • Received:2018-05-15 Online:2018-09-10

摘要: 借助语言分析工具构建媒体关注度与媒体语气指数,分析新媒体冲击下的媒体治理对股价崩盘风险的影响及其作用路径。实证结果表明媒体对股价崩盘风险有显著的抑制作用。其中,传统纸质媒体关注度和媒体语气等“软信息”与股价崩盘风险负相关,而活跃的社交媒体和上市公司微博开通有助于降低上市公司股价崩盘风险的作用更加明显;相较于国有企业,媒体治理对崩盘风险的影响在民营企业中也更为明显;好的内部公司治理水平能提高媒体对股价崩盘风险的抑制作用。上述实证结果印证了相关逻辑假设:媒体的信息生产、传播与监督治理功能,能缓解信息不对称,增加内部人隐藏坏消息的难度、违法违规成本及声誉损失,有助于抑制股价的崩盘风险;而新媒体因其信息传播快、影响范围广及与企业沟通反馈更为畅通,作用更为明显。

关键词: 新媒体, 传统媒体, 公司治理, 交互效应, 股价崩盘风险

Abstract: Using language analysis tools to build media attention index and media tone index, this paper studies the impact of media governance on the stock price crash risk and its mechanism under the impact of new media. The empirical results show that the media has a significant inhibitory effect on the stock price crash risk. Specifically, “soft information”, such as traditional paper media attention and media tone, are negatively correlated with the stock price crash risk, and active social media and application of Weibo of listed firms help more to reduce the stock price crash risk; compared to state-owned enterprises, the impact of media governance on the stock price crash risk is more obvious in the private enterprises; good internal corporate governance can improve the media′s ability to curb the stock price crash risk. The above empirical results confirm the relevant logic hypotheses: the media has functions of information transmission, supervision and governance, which can reduce the information asymmetry, and increase the difficulty of insider hiding bad news, illegal costs and reputation losses, so that to reduce the stock price crash risk; the impact of the new media is more obvious on stock price crash risk because of its rapid dissemination of information, wide ranges of influence and smooth communication with the enterprise.

Key words: new media, traditional media, corporate governance, interactive effect, stock price crash risk