arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.02870q-fin.MFq-fin.RMq-fin.ST
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动态交易策略的无模型分析

Model-free Analysis of Dynamic Trading Strategies

Anna Ananova, Rama Cont, Renyuan Xu

AI总结:

本文提出无模型路径分析框架,利用δ-漂移唯一分解连续交易信号,刻画动态策略的交易次数、收益与风险,并解释局部时及生成实证匹配路径。

摘要:

我们提出一种无模型方法,用于根据交易信号偏离参考水平的漂移(excursions)来分析一大类动态交易策略的风险和收益,包括配对交易、均值回归交易及其他统计套利策略。我们的结果在路径情形下推导,不作任何概率假设。我们引入δ-漂移的概念,将其定义为一条路径在返回参考水平之前偏离该水平达δ的过程。我们证明每条连续路径都可唯一分解为若干δ-漂移。该分解有助于动态交易策略的情景分析,并可得到交易次数、已实现利润、最大损失和回撤的简洁表达式。我们证明均值回归策略的高频极限可用信号的(p阶)局部时来描述。特别地,我们的结果为不规则路径的局部时赋予了金融解释。最后,我们描述了一种非参数情景模拟方法,用于生成漂移性质与实证数据中所观测到的性质相匹配的路径。

英文摘要:

We introduce a model-free approach for analyzing the risk and return for a broad class of dynamic trading strategies, including pairs trading, mean-reversion trading and other statistical arbitrage strategies, in terms of excursions of a trading signal away from a reference level. Our results are derived in a pathwise setting, without any probabilistic assumptions. We introduce the notion of δ-excursion, defined as a path which deviates by δ from a reference level before returning to this level. We show that every continuous path has a unique decomposition into δ-excursions. This decomposition is useful for the scenario analysis of dynamic trading strategies, leading to simple expressions for the number of trades, realized profit, maximum loss, and drawdown. We show that the high-frequency limit of mean-reversion strategies may be described in terms of the (p-th order) local time of the signal. In particular, our results yield a financial interpretation of the local time of an irregular path. Finally, we describe a non-parametric scenario simulation method for generating paths whose excursion properties match those observed in empirical data.

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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