The Joint Law of the Extrema, Final Value and Signature of a Stopped Random Walk

  • Moritz Duembgen
  • L. C. G. Rogers
Part of the Lecture Notes in Mathematics book series (LNM, volume 2137)


A complete characterization of the possible joint distributions of the maximum and terminal value of uniformly integrable martingale has been known for some time, and the aim of this paper is to establish a similar characterization for continuous martingales of the joint law of the minimum, final value, and maximum, along with the direction of the final excursion. We solve this problem completely for the discrete analogue, that of a simple symmetric random walk stopped at some almost-surely finite stopping time. This characterization leads to robust hedging strategies for derivatives whose value depends on the maximum, minimum and final values of the underlying asset.


Contingent Claim Underlying Asset Hedging Strategy Complementary Slackness British Council 
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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Moritz Duembgen
    • 1
  • L. C. G. Rogers
    • 1
  1. 1.Statistical LaboratoryUniversity of CambridgeCambridgeUK

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