学术讲座

5月20日 | 周炜星:Multiscale Risk Spillovers and External Driving Factors: Evidence from The Global Futures and Spot Markets of Staple Foods

时   间:2025年5月20 日(周二)13:00 -13:40

地   点:普陀校区理科大楼A1514室

报告人:周炜星  华东理工大学教授

主持人:周勇

摘   要:

Stable and efficient food markets are crucial for global food security. However, international staple food markets are increasingly exposed to complex risks, including intensified risk contagion and increasing external uncertainties. This paper systematically investigates risk spillovers in global staple food markets and explores the key determinants of these spillover effects, combining innovative decomposition-reconstruction techniques, risk connectedness analysis, and random forest models. The findings reveal that short-term components exhibit the highest volatility, with futures components generally more volatile than spot components. Further analysis identifies two main risk transmission patterns, namely cross-grain and cross-timescale transmission, and clarifies the distinct roles of each component in various net risk spillover networks. Furthermore, price drivers, external uncertainties, and core supply-demand indicators significantly influence these spillover effects, with the heterogeneous importance of varying factors in explaining different risk spillovers. This study provides valuable information on the risk dynamics of staple food markets, offers evidence-based guidance to policymakers and market participants to improve risk warning and mitigation efforts, and supports the stabilization of international food markets and the protection of global food security.

报告人简介:

周炜星,华东理工大学商学院,二级教授,博士生导师,管理科学与工程学科负责人。主要从事金融物理学、经济物理学和社会经济系统复杂性研究。发表SCI/SSCI收录论文200余篇,他引8000余次,11篇论文入选ESI高被引论文,H指数47,连续10年进入爱思唯尔发布的中国高被引学者榜单。论文主要发表在JIFMIM、JEBO和QF等主流金融经济期刊及PNAS、Rep. Prog. Phys.等重要交叉学科期刊上。先后主持包括5项国家自然科学基金在内的10余项国家级和省部级项目,入选国家高层次青年人才计划和上海市多项人才计划。担任《计量经济学报》及多个国际期刊(包括JIFMIM、Financial Innovation、Fractals、Entropy、Fluctuation and Noise Letters等)的编委。获霍英东青年教师基金(2006)、上海市自然科学二等奖(2016,排名第一)、上海市高等教育(本科)教学成果奖一等奖(2022,排名第二)。现兼任中国优选法统筹法与经济数学研究会理事、风险管理分会副理事长、能源经济与管理研究分会常务理事,中国系统工程学会金融系统工程专业委员会副主任,管理科学与工程学会理事、金融与风险管理分会副理事长,全国工业统计学教学研究会金融科技与大数据技术分会副理事长,中国数量经济学会经济复杂性专业委员会副理事长,中国复杂性科学学会副理事长。


发布者:张瑛发布时间:2025-05-19浏览次数:10