如何改善上市公司信息披露质量是证券市场永恒的话题。本文通过考察深交所中小企业板和主板共100家上市公司3年的信息披露质量评级结果,研究了外部监管对上市公司信息披露的影响。实证结果发现,外部监管显著改善了上市公司的信息披露质量,此外,外部监管对信息披露质量的改善幅度受到公司所处地区环境的影响,外部监管对信息披露的改善作用在欠发达地区更为显著。
It is important to improve the quality of listed companies' information disclosure. This paper studies the impact of exterior supervision on listed companies' information disclosure after using 3-year evaluation results of information disclosure quality of 100 listed companies in Shenzhen Stock Exchange' s SME board and main board. We find that the exterior supervision can improve the quality of information disclosure. Furthermore, the improvement effect is better in undeveloped area.