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arXiv 0901.0674q-fin.PR
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双重非接触期权的鲁棒定价与套期保值

Robust pricing and hedging of double no-touch options

Alexander M. G. Cox, Jan Obloj

摘要:

双重非接触期权,即在标的资产保持在给定区间内的情况下支付固定金额的合约,通常交易,特别是在外汇市场。在这项工作中,我们建立模型的基础上,这些期权的价格更流动性交易的期权(看涨期权和数字看涨期权)的价格上的自由边界。关键步骤是构建超级和子对冲策略来建立边界,并使用Skorokhod嵌入技术来显示边界是最好的。除了建立严格的界限,我们仔细考虑什么是套利的设置没有{ \it先验}已知的概率措施。我们讨论了套利概念的两个自然扩展,弱套利和风险消失的弱免费午餐,这是建立缺乏套利和市场模型的存在之间的等价性所必需的。

英文摘要:

Double no-touch options, contracts which pay out a fixed amount provided an underlying asset remains within a given interval, are commonly traded, particularly in FX markets. In this work, we establish model-free bounds on the price of these options based on the prices of more liquidly traded options (call and digital call options). Key steps are the construction of super- and sub-hedging strategies to establish the bounds, and the use of Skorokhod embedding techniques to show the bounds are the best possible. In addition to establishing rigorous bounds, we consider carefully what is meant by arbitrage in settings where there is no {\it a priori} known probability measure. We discuss two natural extensions of the notion of arbitrage, weak arbitrage and weak free lunch with vanishing risk, which are needed to establish equivalence between the lack of arbitrage and the existence of a market model.

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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