讲座人信息：罗茸 中国人民大学经济学院副教授

讲座时间：2025年4月23日 周三 上午10:30-12:00

讲座地点：承泽园245

讲座题目：Externalities and Vertical Bargaining in Two-Sided Markets: Evidences from Shopping Malls

内容简介：Sellers on a two-sided platform have positive market size effects (externalities) on each other by bringing customers to the platform. Platforms can take advantage of such effects to charge greater prices to the sellers. In this paper, we set up a structural model of such two-sided markets, where the consumers choose sellers, the sellers compete on the prices, and the platform negotiates with the sellers. We apply the model to a unique dataset of stores in shopping malls. Using information on store-level rental contracts and customers for 15 shopping malls in Shanghai, we find that the market size effects differ significantly by store category. In addition, the stores' bargaining power against the malls increases with the store size and floor level. Our counterfactual analysis considers the trend of offline retailers closing due to the growing retail industry. We find that the shopping malls could earn greater rents if retail stores are turned into other categories.

个人简介：罗茸，中国人民大学经济学院副教授。罗茸老师2015年于宾夕法尼亚州立大学获得经济学博士学位。2015年至2020年于美国佐治亚大学特里商学院担任助理教授，2020-2023年担任中国人民大学经济学院讲师。研究方向是产业组织经济学，现有研究主题涉及双边市场网络效应，消费者离散选择需求模型，企业动态定价，企业上下游合约，企业生产率估计，以及独家合约对二手房价的影响。研究成果发表在Management Science, International Economics Review, International Journal of Industrial Organization, Journal of Economics & Management Strategy等期刊。主持国家自然科学基金青年项目，担任China Economic Review副编辑。