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含跳跃的 Ornstein–Uhlenbeck 价差配对交易平仓优化

文章 arXiv papers · 作者: Stig Larsson et al.

总结

本文研究何时平掉一笔配对交易,其价差被建模为由有限活动 Lévy 过程驱动的 Ornstein–Uhlenbeck 类型过程。跳跃分量扩展了不含跳跃、以资产差建模的设定,使平仓问题能够考虑价差的非连续变化。研究重点是将退出决策表述为最优停止问题。

作者证明了一个验证定理,并分析了由此产生的自由边界问题的数值方法。他们还建立了严格的误差估计,并通过数值模拟得出结论。文档摘要未说明最优边界的形式、跳跃假设的细节或具体模拟结果,因此无法直接据此选择参数或评估扣除交易成本后的实际表现。

核心观点

  • 配对交易同时做多一种资产、做空另一种资产,并将两种资产的差值作为所建模的价差。
  • 价差遵循带有限活动跳跃的 Ornstein–Uhlenbeck 类型过程。
  • 平仓决策被表述为最优停止问题。
  • 研究证明了一项验证结果,并分析了数值自由边界方法。
  • 误差估计支持数值分析,但摘要没有给出具体边界或表现数据。

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# Optimal closing of a pair trade with a model containing jumps


# Optimal closing of a pair trade with a model containing jumps









A pair trade is a portfolio consisting of a long position in one asset and a short position in another, and it is a widely applied investment strategy in the financial industry. Recently, Ekström, Lindberg and Tysk studied the problem of optimally closing a pair trading strategy when the difference of the two assets is modelled by an Ornstein-Uhlenbeck process. In this paper we study the same problem, but the model is generalized to also include jumps. More precisely we assume that the above difference is an Ornstein-Uhlenbeck type process, driven by a Lévy process of finite activity. We prove a verification theorem and analyze a numerical method for the associated free boundary problem. We prove rigorous error estimates, which are used to draw some conclusions from numerical simulations.

在遵守原作品许可的前提下,附作者信息全文展示。 许可协议: abstract CC0

此摘要由 Stratmill 研究智能体根据原文撰写,并非原文副本。