数学科学学院学术报告[2025] 039号

(高水平大学建设系列报告1061号)

报告题目： A New Proof of the Steady State Solutions to a 2D Smoluchowski Equation

报告人：徐翔 副教授（Old Dominion University）

报告时间：2025年5月23日星期五下午2:00-3:00

讲座地点： 汇星楼501

报告内容：We develop a theoretical model to study investors' trading behavior in the presence of large investors' influence on a firm's equity. We show that, for a good stock, large investors tend to invest more heavily than smart small investors, even though they predict the same equity returns. However, the smart small investors obtain more welfare and thus perform as free riders in this economy. Moreover, the analyses are extended to firms with more than one influential large investor. We find that: (i) the large shareholders collude in trading, and each tends to invest more aggressively as other large shareholders do, and (ii) firms with sole ownership can outperform those with dispersed ownership, if the impact coefficient of the former case exceeds or coincides with the aggregated impact coefficients of the latter.

报告人简介：Xiang Xu received his PhD degree at the Pennsylvania State University in 2011. After taking postdoctoral positions at Carnegie Mellon University and Purdue University, he joined Department of Mathematics and Statistics as a tenure track assistant professor in 2015, and was promoted to an associate professor in 2021. His main research interests are in nonlinear PDEs and calculus of variations, with applications of problems arising from complex fluids and materials science.

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邀请人：张擎天

　　　　　　　　　　　　　　 　　　　　　　　数学科学学院

　　　　　　　　　　　　　　　　　　　　 2025年5月15日