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arXiv 2411.04321q-fin.CPq-fin.PR
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稳健且快速的基准局部波动率模型

Robust and Fast Bass Local Volatility

University of Illinois Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校);JPMorgan Chase & Co.(摩根大通)

Hao Qin, Charlie Che, Ruozhong Yang, Liming Feng

AI总结:

本文提出一种结合局部二次估计和对数正态混合尾部分布的方法,用于构建稳健且高效的基准局部波动率模型,提升计算效率并展示其在期权定价和市场案例中的应用效果。

摘要:

基准局部波动率模型(Bass-LV)如[Conze和Henry-Labordere,2021]所研究的,因其能够消除不同到期日之间的插值需求而脱颖而出,这相对于传统LV模型具有显著优势。然而,其性能高度依赖于准确构建状态价格密度及其相应的边缘分布以及高效的数值卷积,这些在解决相关固定点问题时是必不可少的。在本文中,我们提出了一种新的方法,结合局部二次估计和对数正态混合尾部分布来构建状态价格密度。我们研究了基于梯形法则的数值卷积方案的计算效率,并证明它们在性能上优于常用的高斯-赫尔默特求积法。我们通过标准期权定价模型以及详细的市场案例研究展示了所提出方法的性能。

英文摘要:

The Bass Local Volatility Model, as studied in {henry2021bass}, stands out for its ability to eliminate the need for interpolation between maturities. This offers a significant advantage over traditional local volatility models. However, its performance highly depends on accurate construction of risk neutral densities and the corresponding marginal distributions and efficient numerical convolutions which are necessary when solving the associated fixed point problems. In this paper, we propose a new approach combining local quadratic estimation and lognormal mixture tails for the construction of risk neutral densities. We investigate computational efficiency of trapezoidal rule based schemes for numerical convolutions and show that they outperform commonly used Gauss-Hermite quadrature. We demonstrate the performance of the proposed method, both in standard option pricing models, as well as through a detailed market case study.

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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