Martingale representation and admissible portfolio process with regime switching

Chuin Ching Liew, Tak Kuen Siu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We discuss the existence of an admissible investment strategy for any given consumption rate process in a Markov, regime-switching Black-Scholes-Merton economy. A martingale representation for a double martingale generated by the Brownian motion and the Markov chain is used to establish the existence of the admissible investment strategy. We also employ the martingale representation to prove the attainability of a European contingent claim in the regime-switching environment under a pricing kernel specified by the Esscher transform based on the Laplace cumulant process.

Original languageEnglish
Pages (from-to)106-120
Number of pages15
JournalStochastic Analysis and Applications
Issue number1
Publication statusPublished - Jan 2011


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