南开保险精算大讲堂是南开保险与精算研究院主办的系列讲座,旨在搭建保险精算领域学术交流平台、推动相关领域的研究与合作。讲座主题涵盖保险精算、风险管理、随机过程、大数据等多个领域,欢迎校内外师生积极参加!
本期南开保险精算大讲堂活动安排如下:
讲座题目
次扩散Black-Scholes模型和测度变换
Sub-diffusive Black-Scholes model and Girsanov transform
主讲人:张帅琪

中国大学矿业数学学院副教授, 2012 年毕业于中南大学,澳⻔大学博士后,新加坡国立大学博士后。主要从事随机分析,随机控制,保险精算领域的研究。迄今在 SIAM Journal on Control and Optimization, Stochastic Processes and their Applications , Journal of Differential Equations , Scandinavian Actuarial Journal, System Control Letters,中国科学:数学等刊物发表论文二十余篇,出版“十四五”国家重点出版物《随机分析与控制简明教程》,主持国家自然科学青年基金,教育部人文社科基金规划项目,江苏省自然科学基金面上项目等。
讲座时间
2025年6月11日(周三)
10:00
讲座地点
金融学院 434
Abstract: We propose a novel Black-Scholes model under which the stock price processes are modeled by stochastic differential equations driven by a sub-diffusion. The new framework can capture the less financial activity phenomenon during the bear markets while having the classical Black- Scholes model as its special case. The sub-diffusive spot market is arbitrage-free but is in general incomplete. We study the pricing for European-style contingent claims under this new model. For this, we study Girsanov transform for sub-diffusions and use it to find risk-neutral probability measure for the new Black-Scholes model. Finally we derive the explicit formula for price of the European call option and show that it can be determined by a partial differential equation (PDE) involving fractional derivative in time, which we coin a time-fractional Black-Scholes PDE.
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