当代财经 ›› 2026, Vol. 0 ›› Issue (7): 85-97.

• 智能经济 • 上一篇    下一篇

数据安全治理与企业股价同步性——基于数据安全法实施的准自然实验

赵婷婷1, 郭小敏2   

  1. 1.南京审计大学 会计学院,江苏 南京 211815;
    2.北京物资学院 会计学院,北京 101149
  • 收稿日期:2025-08-29 修回日期:2026-03-18 出版日期:2026-07-15 发布日期:2026-09-14
  • 通讯作者: 郭小敏,北京物资学院副教授,管理学博士,主要从事公司财务、公司治理研究,联系方式gxmwishes@126.com。
  • 作者简介:赵婷婷,南京审计大学讲师,管理学博士,主要从事法与会计、公司治理研究。
  • 基金资助:
    国家自然科学基金青年项目“数据安全治理与资本市场效应研究——基于《数据安全法》的准自然实验”(72402098); 国家自然科学基金青年项目“反垄断执法的溢出效应研究”(72302023)

Data Security Governance and Stock Price Synchronicity:A Quasi-Natural Experiment Based on the Implementation of the Data Security Law

Zhao Ting-ting1, Guo Xiao-min2   

  1. 1. Nanjing Audit University, Nanjing 211815, China;
    2. Beijing Wuzi University, Beijing 101149, China
  • Received:2025-08-29 Revised:2026-03-18 Online:2026-07-15 Published:2026-09-14

摘要: 《中华人民共和国数据安全法》的实施强化了数据安全治理,提高了资本市场的信息效率,增加了股价信息含量。以该法实施为政策冲击,探究了数据安全治理对股价同步性的影响。研究发现,该法的实施降低了企业的股价同步性。机制检验表明,该法的实施提高了企业的信息披露质量,推动了企业数字化转型,因而该法的实施降低了股价同步性。异质性检验发现,在创新水平低的企业和处于数据治理水平低地区的企业中,该法的实施对股价同步性的降低作用更明显。为此,政府要加强对企业数据安全的监管,企业要建立健全数据安全治理体系,投资者要关注上市公司的数据安全治理情况。

关键词: 数据安全法, 数据安全治理, 股价同步性

Abstract: The implementation of the Data Security Law of the People’s Republic of China has strengthened data security governance, improved information efficiency in the capital market, and increased stock price informativeness. Taking this law as a policy shock, this study empirically investigates how data security governance affects stock price synchronicity. The findings reveal that the implementation of this law significantly reduces firms' stock price synchronicity. Mechanism tests indicate that this law curbs synchronicity by enhancing corporate information disclosure quality and promoting corporate digital transformation. Heterogeneity analyses further indicate that such mitigating effect is more pronounced for firms with lower innovation capacity and those located in regions with underdeveloped local data governance. Accordingly, governments ought to strengthen supervision over corporate data security; enterprises should construct and refine their internal data security governance systems; and investors should pay attention to the data security governance of listed companies.

Key words: the Data Security Law, data security governance, stock price synchronicity

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