Microblog publicity and IPO underpricing

ABSTRACTBased on many cases of publicity using social media in the market, this paper empirically examines the damage of microblog publicity to market efficiency by using the sample of IPO companies. The results show that the companies posting microblogs during the IPO publicity period have higher I...

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Main Authors: Chao Dou, Xue Yang, Xuejin Bai, Rui Sun
Format: Article
Language:English
Published: Taylor & Francis Group 2023-01-01
Series:China Journal of Accounting Studies
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/21697213.2023.2143691
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author Chao Dou
Xue Yang
Xuejin Bai
Rui Sun
author_facet Chao Dou
Xue Yang
Xuejin Bai
Rui Sun
author_sort Chao Dou
collection DOAJ
description ABSTRACTBased on many cases of publicity using social media in the market, this paper empirically examines the damage of microblog publicity to market efficiency by using the sample of IPO companies. The results show that the companies posting microblogs during the IPO publicity period have higher IPO underpricing, and the more the number of microblogs, the richer the content, the higher the proportion of microblogs in the operating activities, the higher the IPO underpricing. These relationships are stronger in the enterprises with higher degree of information asymmetry and management valuing social media more. Furthermore, microblogs posted during the IPO period mainly influence investor sentiment, especially small investors. In addition, the short-term stock market performance of the companies posting microblogs is significantly worse. This paper provides a theoretical basis for standardizing the information disclosure behavior of listed companies using social media.
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spelling doaj.art-83255080a81c4b8e911cf92dad5d2e812023-05-28T04:00:22ZengTaylor & Francis GroupChina Journal of Accounting Studies2169-72132169-72212023-01-0111118420510.1080/21697213.2023.2143691Microblog publicity and IPO underpricingChao Dou0Xue Yang1Xuejin Bai2Rui Sun3Business School, Central University of Finance and Economics, Beijing, ChinaBusiness School, Central University of Finance and Economics, Beijing, ChinaBusiness School, Ningbo University, Ningbo, ChinaAgricultural Bank Financial Assets Investment Co.Ltd, Beijing, ChinaABSTRACTBased on many cases of publicity using social media in the market, this paper empirically examines the damage of microblog publicity to market efficiency by using the sample of IPO companies. The results show that the companies posting microblogs during the IPO publicity period have higher IPO underpricing, and the more the number of microblogs, the richer the content, the higher the proportion of microblogs in the operating activities, the higher the IPO underpricing. These relationships are stronger in the enterprises with higher degree of information asymmetry and management valuing social media more. Furthermore, microblogs posted during the IPO period mainly influence investor sentiment, especially small investors. In addition, the short-term stock market performance of the companies posting microblogs is significantly worse. This paper provides a theoretical basis for standardizing the information disclosure behavior of listed companies using social media.https://www.tandfonline.com/doi/10.1080/21697213.2023.2143691MicroblogpublicityIPO underpricinginvestor sentiment
spellingShingle Chao Dou
Xue Yang
Xuejin Bai
Rui Sun
Microblog publicity and IPO underpricing
China Journal of Accounting Studies
Microblog
publicity
IPO underpricing
investor sentiment
title Microblog publicity and IPO underpricing
title_full Microblog publicity and IPO underpricing
title_fullStr Microblog publicity and IPO underpricing
title_full_unstemmed Microblog publicity and IPO underpricing
title_short Microblog publicity and IPO underpricing
title_sort microblog publicity and ipo underpricing
topic Microblog
publicity
IPO underpricing
investor sentiment
url https://www.tandfonline.com/doi/10.1080/21697213.2023.2143691
work_keys_str_mv AT chaodou microblogpublicityandipounderpricing
AT xueyang microblogpublicityandipounderpricing
AT xuejinbai microblogpublicityandipounderpricing
AT ruisun microblogpublicityandipounderpricing