According to the Measures for the Administration of Information Disclosure by Listed Companies (Order No. 40 of the China Securities Regulatory Commission, promulgated on January 30, 2007), to standardize information disclosure behaviors of issuers, listed companies, and other entities obligated to disclose information, listed companies shall disclose relevant information promptly, accurately, and completely, including prospectuses, offering prospectuses, listing announcements, periodic reports, and temporary reports.
Timely and accurate corporate announcements can provide investors with negative or positive signals that influence real-time markets. Reviewing historical announcements from listed companies enables academic research to trace patterns—market reactions, investor sentiment, corporate performance... In the current era of new media, market responses to corporate announcements have become more intense and rapid, all of which can be quantified through big data.
The A-Share Listed Companies Corporate Bond Announcement Data released by CnOpenData encompasses comprehensive fields such as Stock code (股票代码), Company name (公司名称), Announcement title (公告标题), Announcement date (公告时间), Category (分类), Industry (行业), and Year (年度). This dataset provides robust data support for research on A-share listed companies and securities markets.
Time Coverage
As of May 2025
Field Display
Sample Data
Relevant Literature
- Zhang Yeqing, Lu Yao, Li Leyun (2021): "The Impact of Big Data Applications on Corporate Market Value in China: Evidence from Textual Analysis of Annual Reports of Chinese Listed Companies," Economic Research Journal, No. 12.
Data Update Frequency
Annual updates