Consistent upper price bounds for exotic options given a finite number of call prices and their convergence

Nicole B\"auerle and Daniel Schmithals

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Abstract: We consider the problem of finding a consistent upper price bound for exotic options whose payoff depends on the stock price at two different predetermined time points (e.g. Asian option), given a finite number of observed call prices for these maturities. A model-free approach is used, only taking into account that the (discounted) stock price process is a martingale under the no-arbitrage condition. In case the payoff is directionally convex we obtain the worst case marginal pricing measures. The speed of convergence of the upper price bound is determined when the number of observed stock prices increases. We illustrate our findings with some numerical computations.

Date: 2019-07
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Published in International Journal of Theoretical and Applied Finance Vol. 24, No. 02, 2150011 (2021)

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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:1907.09144

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