According to the "Administrative Measures for Information Disclosure of Listed Companies" (CSRC Order No. 40) promulgated on January 30, 2007, to standardize information disclosure behaviors of issuers, listed companies, and other information disclosure obligors, listed companies shall disclose relevant information promptly, accurately, and completely, including prospectuses, offering circulars, listing announcements, periodic reports, and temporary reports.
A timely and accurate listed company announcement can provide investors with bearish or bullish signals that impact real-time markets. Retrospective analysis of historical announcements enables academic research to trace patterns in market reactions, investor sentiment, corporate performance... In the current new media era, market responses to listed company announcements have become more intense and rapid, all of which can be reflected through big data.
The A-share listed company articles of association and announcement data launched by CnOpenData contains comprehensive fields such as Stock code(股票代码), Company name(公司名称), Announcement title(公告标题), Announcement time(公告时间), Category(分类), Industry(行业), Year(年度), providing 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 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