信息处理成本的降低能够传递更多的公司层面信息吗?基于XBRL实施的视角  

Reduction of Information Processing Costs and Firm-specific Information:Evidence from the XBRL Adoption in China

作　　者：沈德华 杨健康 SHEN Dehua;YANG Jiankang(School of Finance,Nankai University,Tianjin 300350,China;College of Management and Economics,Tianjin University,Tianjin 300072,China)

机构地区：[1]南开大学金融学院,天津300350 [2]天津大学管理与经济学部,天津300072

出　　处：《计量经济学报》2023年第3期811-827,共17页China Journal of Econometrics

基　　金：国家自然科学基金面上项目(72071141)。

摘　　要：信息处理成本可以影响公司层面信息传递.本文以上交所和深交所2009年起要求上市公司披露XBRL财务报告为准自然实验,研究信息处理成本降低与公司层面信息传递之间的关系.实证结果表明,公司采用XBRL财务报告后,股价中公司层面的特质信息增加;XBRL的实施对会计信息透明度较低的企业更好;与国有控股企业相比,非国有控股企业实施XBRL财务报告效果更显著.不同的公司层面信息的度量指标、不同的回归模型以及安慰剂检验都支持以上的结论.The Shanghai Stock Exchange and the Shenzhen Stock Exchange have required all the listed companies to disclose the XBRL financial reports since 2009.Theoretically,the implementation of XBRL financial reports could reduce the cost of investor information processing,increase the information content in stock prices,and enable stock prices to better reflect firm-specific information.This paper focuses on the A-share listed companies in both exchanges and analyzes the impact of the adoption of XBRL financial reports on the cost of information processing,which in turn affects the idiosyncratic volatility of the stock price.The results show that the adoption of XBRL financial reports reduces the cost of acquiring and processing investor information,increases the idiosyncratic volatility,and then increases the firm-specific information in stock prices;companies with low accounting information transparency have a more significant effect of implementing XBRL financial reporting;compared with state-owned holding companies,non-state holding companies have a more significant effect of implementing XBRL financial reporting.All these findings are robust to the placebo test,alternative proxy,and alternative model.

关 键 词：XBRL 特质波动率 信息成本 公司层面信息 股价同步性 

分 类 号：F275[经济管理—企业管理] F832.51[经济管理—国民经济]