Notice of RetractionThe study on the effect of the shareholder structure reform of listed companies on the basics of Accounting Research Method

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

On the basics of event study, the effect before and after the shareholder structure reform of 41 listed companies is compared and studied by Accounting Research Method, and author finds that the shares of sample companies gain positive abnormal returns in the even window of shareholder structure reform and there are improvements in companies´ short-term performances and values, which proves that before shareholder structure reform, share reforms work better on the companies with larger proportion of non-tradable shares in total shares than the companies with lower proportion of non-tradable shares in total shares.