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用弹性弦模型刻画收益率曲线流动性

文章 arXiv papers · 作者: Victor Le Coz et al.

总结

本文介绍一种远期利率曲线波动模型,将其视为一根刚性弹性弦。该模型将推动曲线变化的冲击与意外订单流联系起来,从仅描述价格扩展为对价格和交易活动的微观结构描述。

据称,该框架能够用比现有交叉冲击模型更少的参数捕捉市场冲击和交叉冲击,同时提供相当的解释力。它还得出依赖流动性的关系:一个期限的远期利率与另一个期限的订单流相关,这与近期实证发现一致。作者进一步报告,该模型能够解释短期内偏离鞅价格行为的现象。所提供的描述未给出数据详情、参数估计或超出这些比较的测试,因此不足以评估模型的预测表现或实际用途。

核心观点

  • 远期利率曲线的波动被建模为刚性弹性弦的波动。
  • 意外订单流是曲线模型中的冲击来源。
  • 该框架纳入了期限之间的价格冲击和交叉冲击。
  • 报告称,该模型用更少的参数实现了与现有交叉冲击模型相当的解释力。
  • 模型将流动性与跨期限利率和订单流相关性以及短期非鞅行为联系起来。

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# How does liquidity shape the yield curve?


# How does liquidity shape the yield curve?









The phenomenology of the forward rate curve (FRC) can be accurately understood by the fluctuations of a stiff elastic string (Le Coz and Bouchaud, 2024). By relating the exogenous shocks driving such fluctuations to the surprises in the order flows, we elevate the model from purely describing price variations to a microstructural model that incorporates the joint dynamics of prices and order flows, accounting for both impact and cross-impact effects. Remarkably, this framework allows for at least the same explanatory power as existing cross-impact models, while using significantly fewer parameters. In addition, our model generates liquidity-dependent correlations between the forward rate of one tenor and the order flow of another, consistent with recent empirical findings. We show that the model also account for the non-martingale behavior of prices at short timescales.

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。