On joint distributions of the maximum, minimum and terminal value of a continuous uniformly integrable martingale

Alexander M.G. Cox and Jan Obłój

Stochastic Processes and their Applications, 2015, vol. 125, issue 8, 3280-3300

Abstract: We study the joint laws of the maximum and minimum of a continuous, uniformly integrable martingale. In particular, we give explicit martingale inequalities which provide upper and lower bounds on the joint exit probabilities of a martingale, given its terminal law. Moreover, by constructing explicit and novel solutions to the Skorokhod embedding problem, we show that these bounds are tight. Together with previous results of Azéma & Yor, Perkins, Jacka and Cox & Obłój, this allows us to completely characterise the upper and lower bounds on all possible exit/no-exit probabilities, subject to a given terminal law of the martingale. In addition, we determine some further properties of these bounds, considered as functions of the maximum and minimum.

Keywords: Double-exit probabilities; Skorokhod embedding problem; Continuous martingales; Martingale inequalities (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:spapps:v:125:y:2015:i:8:p:3280-3300

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DOI: 10.1016/j.spa.2015.03.005

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