报告题目:Tail Risk Measures in Portfolio and Financial Investing: The Awkward, The Bad, and The Good
时间:2023年9月20日(星期三)下午14:30-16:30
地点:沙河校区,学院1号楼102会议室
报告人:张正军,中国科学院大学经济与管理学院,教授
摘要:Over reacting on either profit or loss can severely lead to ill-functioned financial markets, and even financial crises. We build a new Mean-MMVaR model and show the performances of VaR, CVaR, and MMVaR to be awkward, bad, and outstanding, respectively, in terms of 1) better risk-return trade-off and portfolio selection under diversified markets and risk levels being from regulators’tight rules to investors’comfort beliefs which result in inverted U-shaped Sharpe ratios, and 2) balanced equity investability. These evidences confirm that Mean-MMVaR can become the natural benchmark risk-return trade-off model to replace existing models in financial investment and portfolio optimization.
报告人简介:报告人张正军教授现为中国科学院大学经济与管理学院长聘教授和统计与数据科学系系主任,原美国威斯康辛大学统计系终身教授和系副主任,国际数理统计协会执行委员和财务总监(July 2016 -- July 2022),国际数理统计协会会士,美国统计协会会士。现担任JASA,JBES,Statistica Sinica,JDS,EJS等国际期刊副主编。主要研究方向包括计量经济学、金融计量学、计算医学与实践、极端气候等等。在国际顶级期刊:统计(AoS,JASA,JRSSB)、计量(JoE, EE)、金融(JBES, JBF)、医学(AFM,Vaccines)、气象(ATM)等发表论文上百篇。代表性思想和作品包括商相关系数(QCC、TQCC)、非对称广义相关系数(GMC)、滞后尾部相依系数、最大线性回归、最大逻辑回归、EGB2期权定价公式、盯市在险价值(MMVaR)、条件极值Frechet自回归(AcF)等等。