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arXiv 0904.4822q-fin.PR
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多重外汇期权定价的隐含相关性

Implied Correlation for Pricing multi-FX options

Pavel V. Shevchenko

摘要:

根据几种外汇汇率(FXRs)的相关性来确定期权。为了评估期权,可以使用相关性的历史估计,但通常它们并不稳定。更重要的是,使用这些估计的期权定价通常与交易的普通合约不一致。为了给以相同货币计价的多个外汇期权定价,金融从业者和交易员经常使用从形成“货币三角形”的外汇期权的隐含波动率计算出的隐含相关性。然而,某些期权可能具有不同计价货币的基础FXRs。在本文中,我们提出的公式之间的隐含相关性,这样的FXRs。这些可以用于估值,例如,具有不同计价货币的两个FXR上的障碍期权,其中一个FXR确定期权在到期时的价内或价外,而另一个FXR与障碍相关。其他相关的选择是直截了当的。

英文摘要:

Option written on several foreign exchange rates (FXRs) depends on correlation between the rates. To evaluate the option, historical estimates for correlations can be used but usually they are not stable. More significantly, pricing of the option using these estimates is usually inconsistent to the traded vanilla contracts. To price options written on several FXRs with the same denominating currency, financial practitioners and traders often use implied correlations calculated from implied volatilities of FXRs that form "currency triangles". However, some options may have underlying FXRs with different denominating currencies. In this paper, we present the formula for the implied correlations between such FXRs. These can be used for valuation, for example, barrier option on two FXRs with different denominating currencies where one FXR determines how much the option is in or out of the money at maturity while another FXR is related to the barrier. Other relevant options are straightforward.

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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