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arXiv 1802.03042q-fin.CPcs.NAmath.NAmath.OCmath.PRq-fin.RM
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深度对冲

Deep Hedging

J.P. Morgan(摩根大通);Eidgenössische Technische Hochschule Zürich(苏黎世联邦理工学院)

Hans Bühler, Lukas Gonon, Josef Teichmann, Ben Wood

AI总结:

本文提出利用深度强化学习应对市场摩擦的衍生品对冲框架,展示约束交易策略可近似最优解,且在高维情形下具有高效计算性能。

摘要:

我们提出一个框架,用于在存在市场摩擦(如交易成本、市场影响、流动性限制或风险限制)的情况下,利用现代深度强化机器学习方法对冲衍生品组合。我们讨论标准强化学习方法如何应用于非线性奖励结构,即凸风险度量。作为深度学习用于随机过程的一般贡献,我们还展示所用算法的约束交易策略集足以ε-近似任何最优解。即使在高维情况下,我们的算法也可高效实现,其结构不依赖特定市场动态,可跨对冲工具通用,包括使用流动性衍生品。其计算性能在投资组合规模上变化不大,主要取决于可用对冲工具数量。我们通过在由Heston模型驱动的合成市场中展示交易成本下的对冲效果,证明了在完全市场解决方案上的优势。

英文摘要:

We present a framework for hedging a portfolio of derivatives in the presence of market frictions such as transaction costs, market impact, liquidity constraints or risk limits using modern deep reinforcement machine learning methods. We discuss how standard reinforcement learning methods can be applied to non-linear reward structures, i.e. in our case convex risk measures. As a general contribution to the use of deep learning for stochastic processes, we also show that the set of constrained trading strategies used by our algorithm is large enough to $ε$-approximate any optimal solution. Our algorithm can be implemented efficiently even in high-dimensional situations using modern machine learning tools. Its structure does not depend on specific market dynamics, and generalizes across hedging instruments including the use of liquid derivatives. Its computational performance is largely invariant in the size of the portfolio as it depends mainly on the number of hedging instruments available. We illustrate our approach by showing the effect on hedging under transaction costs in a synthetic market driven by the Heston model, where we outperform the standard "complete market" solution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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