全部树

China university patent statisticsNEW

China high-tech enterprise patent statisticsNEW

Digital economy patent application and authorization dataNEW

Patents and citation data of Little Giant and individual champion companiesNEW

Small giant and single champion enterprise design patent details table

Statistics on the entry and exit of Chinese industrial and commercial enterprisesNEW

Statistics on entry and exit information of Chinese partnershipsNEW

Basic information data of manufacturing industrial and commercial registered enterprisesNEW

Patent and citation data of A-share listed companiesNEW

Patent details of A-share listed companies
A-share listed companies' patent application details table
Details of Design Patents Authorized by A-share Listed Companies

Green patents and citation data of A-share listed companies

A-share listed companies green patent details table

Patent and citation data of Chinese industrial enterprisesNEW

Green patents and citation data of Chinese industrial enterprisesNEW

Details of Green Patents of Chinese Industrial Enterprises

Tax investigation of corporate patents and citation dataNEW

Cost of living data for global residentsNEW

China foreign trade index data

  According to the Administrative Measures for Information Disclosure of Listed Companies (China Securities Regulatory Commission Order No. 40, January 30, 2007), to standardize information disclosure practices of issuers, listed companies, and other information disclosure obligors, listed companies shall disclose relevant information promptly, accurately, and comprehensively, including prospectuses, offering circulars, listing announcements, periodic reports, and interim reports.

  Timely and accurate corporate announcements can provide investors with critical negative or positive signals that influence real-time market dynamics. Retrospective analysis of historical corporate announcements enables academic investigations into market reactions, investor sentiment, and corporate performance through pattern tracing. In the era of new media, market responses to corporate announcements have become more rapid and pronounced, all of which can be quantified through big data analytics.

  The A-share listed company performance forecast announcement data compiled 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 fiscal year (年度). This dataset provides robust data support for research on A-share listed companies and securities markets.


Temporal 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 Chinese Listed Companies' Annual Reports," Economic Research Journal 12.

Data Update Frequency

Annual Update