通过 FBSDE 表示具有随机禀赋的前瞻性绩效标准,并将其应用于前瞻性优化确定性等价物

Gechun Liang, Yifan Sun, Thaleia Zariphopoulou
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引用次数: 0

摘要

我们将远期绩效标准的概念扩展到不完全市场中的随机禀赋设置。在这些结果的基础上,我们引入并发展了前瞻性优化确定性等价物(forwardOCE)这一新概念,它提供了一种真正的动态估值机制,可适应渐进式自适应市场模型更新、随机风险偏好以及任意到期日的即将到来的债权。与此同时,我们还开发了一种新方法,通过直接研究原始问题和对偶问题的候选最优控制过程来分析新出现的随机优化问题。具体来说,我们导出了两个新的前向-后向随机微分方程(FBSDE)系统,并建立了优化的必要条件和充分条件,以及两个问题之间的变量等价性。这一新方法具有普遍性,是对现有的基于相关值函数的后向随机偏微分方程(后向 SPDE)方法的补充。我们还考虑了具有随机禀赋的前向性能标准和前向 OCE 的代表性示例,对于指数标准,我们研究了前向 OCE 与前向熵风险度量之间的联系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Representation of forward performance criteria with random endowment via FBSDE and application to forward optimized certainty equivalent
We extend the notion of forward performance criteria to settings with random endowment in incomplete markets. Building on these results, we introduce and develop the novel concept of forward optimized certainty equivalent (forward OCE), which offers a genuinely dynamic valuation mechanism that accommodates progressively adaptive market model updates, stochastic risk preferences, and incoming claims with arbitrary maturities. In parallel, we develop a new methodology to analyze the emerging stochastic optimization problems by directly studying the candidate optimal control processes for both the primal and dual problems. Specifically, we derive two new systems of forward-backward stochastic differential equations (FBSDEs) and establish necessary and sufficient conditions for optimality, and various equivalences between the two problems. This new approach is general and complements the existing one based on backward stochastic partial differential equations (backward SPDEs) for the related value functions. We, also, consider representative examples for both forward performance criteria with random endowment and forward OCE, and for the case of exponential criteria, we investigate the connection between forward OCE and forward entropic risk measures.
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