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首页> 外文期刊>AESTIMATIO: the IEB International Journal of Finance >Testing an innovative Variance reduction technique for Pricing Bond Options in the Framework of the CIR Model
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Testing an innovative Variance reduction technique for Pricing Bond Options in the Framework of the CIR Model

机译:在CIR模型的框架内测试创新的方差减少技术来定价债券期权

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We design an innovative variance reduction technique coupled with Monte Carlo (MC) simulation that prices accurately plain-vanilla zero coupon bond options. This technique speeds up the convergence of the simulation and offers better results than MC simula- tion using antithetic variables. Our benchmark is the closed-form solution of Cox Inger- soll and Ross (CIR, 1985). Our paper shows that, when pricing bond options with MC simulation, we can constrain the Wiener process inside upper and lower bands to speed up the convergence towards the 'true' option value (the CIR analytical solution). Fur- thermore, it works best when the bands are drawn at plus or minus 0.5 standard devi- ations and our technique is less time consuming than a plain MC simulation. Finally, we introduce an original stochastic fifth-order polynomial model beside the CIR solu- tion. Our contribution is to provide market practitioners with an efficient variance re- duction technique, easy to implement. The major challenge of our technique would be to price bond options in times of high market volatility, when option price needs badly to reflect rare events located in the tails of the distribution. However, we can argue that pricing options in times of volatile markets is a challenge for every option pricing model.
机译:我们设计了一种创新的减少方差的技术,并结合了蒙特卡洛(MC)仿真技术,可以准确地定价普通香草零息债券期权。与使用对立变量的MC仿真相比,该技术可加快仿真的收敛速度并提供更好的结果。我们的基准是Cox Ingersoll和Ross的封闭式解决方案(CIR,1985年)。我们的论文表明,当通过MC模拟为债券期权定价时,我们可以在上下频带内限制Wiener过程,以加快向“真实”期权价值(CIR分析解决方案)的收敛。此外,当以正负0.5个标准偏差绘制带时,效果最佳,并且我们的技术比普通的MC模拟耗时少。最后,除了CIR解决方案外,我们还介绍了原始的随机五阶多项式模型。我们的贡献是为市场从业者提供一种易于实施的有效减少方差的技术。我们的技术的主要挑战是在市场剧烈波动时对债券期权进行定价,当时期权价格迫切需要反映分布尾部的罕见事件。但是,我们可以争辩说,在市场动荡时期,定价期权对每种期权定价模型都是一个挑战。

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