According to the Administrative Measures for Information Disclosure of Listed Companies (CSRC Order No. 40) promulgated on January 30, 2007, to standardize information disclosure practices of issuers, listed companies, and other obligated entities, listed companies shall disclose relevant information promptly, accurately, and completely, including prospectuses, offering circulars, listing announcements, periodic reports, and interim reports.
A timely and accurate corporate announcement can provide investors with critical negative or positive signals that influence real-time market movements. Retrospective analysis of historical corporate announcements enables academic investigations into market reactions, investor sentiment, and corporate performance through pattern recognition. In the new media era, market responses to corporate announcements have become more immediate and pronounced, all of which can be quantified through big data analytics.
The A-share listed company prospectus announcement data released by CnOpenData encompasses comprehensive fields including 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 support for research on A-share listed companies and securities markets.
Time Coverage
As of May 2025
Field Display
Sample Data
Related Literature
- Zhang Yeqing, Lu Yao, Li Leyun, 2021: "The Impact of Big Data Applications on Chinese Enterprises' Market Value: Evidence from Textual Analysis of Annual Reports of Chinese Listed Companies," Economic Research Journal, No. 12.
Data Update Frequency
Annual Updates