According to the "Regulations on Information Disclosure of Listed Companies" promulgated by the CSRC Order No. 40 on January 30, 2007, in order to regulate the information disclosure behavior of issuers, listed companies and other information disclosure obligors, listed companies should disclose relevant information in a timely, accurate and complete manner, including prospectuses, fundraising instructions, listing announcements, regular reports and interim reports, etc.

  A timely and accurate announcement of a listed company is enough to give investors a negative or positive signal and affect the real-time market. Looking back on the announcements of listed companies over the years can also achieve the academic research of following the map - market reaction, investor sentiment, company performance... In the current new media era, the market reaction to the announcements of listed companies is more intense and rapid, and all of these can be reflected through big data.

  The A-share listed companies' articles of association announcement data launched by CnOpenData includes fields such as stock code, company name, announcement title, announcement time, classification, industry, and year, with extremely comprehensive information, providing strong data support for A-share listed companies research, securities market research, and other aspects.

Time interval

As of 2023.04

Field display

Sample data

Related Literature

• Zhang Yeqing, Lu Yao, Li Leyun, 2021: "The Impact of Big Data Application on the Market Value of Chinese Enterprises - Evidence from Text Analysis of Annual Reports of Chinese Listed Companies", Economic Research, No. 12.

Data update frequency

Annual update

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