讲座题目：Identifying Economic Links Using Social Media

讲座时间：2023年7月6日，19:00-21:00

主持人：张浩 教授

主讲人照片：

主讲人简介： 郭峰，上海财经大学公共经济与管理学院投资系讲席副教授、系主任，数实融合与智能治理实验室执行主任。研究领域包括数字经济与数字金融、机器学习与大数据分析、公共经济学等范畴。在《经济研究》《管理世界》（2篇）《经济学季刊》（6篇）《管理科学学报》，Research Policy, Journal of Economic Behavior & Organization和China Economic Review等中英文学术期刊上发表论文50余篇，在主流媒体发表经济时评90余篇，出版学术专著3部，参著数部。主持国家社科基金青年、上海市哲学社会科学规划项目、博士后科学基金面上项目等课题10余项。

讲座内容简介：

This paper introduces a new method to identify economic links between firms using social media. If a firm is discussed extensively in the subforum of another firm, the two firms are considered to have explicit or implicit economic links. The suspension of the IPO of Ant Group in November 2020 is used as an exogenous shock, which is found to have a negative impact on the stock prices of firms that have social media connections (SMCs) with Ant Group. Additionally, the corporate and financial asset investments of those firms are also affected, confirming the real effects of SMCs.