Progressive Enlargement of Filtrations and Backward Stochastic Differential Equations with Jumps

Idris Kharroubi () and Thomas Lim ()
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Idris Kharroubi: Université Paris Dauphine
Thomas Lim: Université d’Evry and ENSIIE

Journal of Theoretical Probability, 2014, vol. 27, issue 3, 683-724

Abstract: Abstract This work deals with backward stochastic differential equations (BSDEs for short) with random marked jumps, and their applications to default risk. We show that these BSDEs are linked with Brownian BSDEs through the decomposition of processes with respect to the progressive enlargement of filtrations. We prove that the equations have solutions if the associated Brownian BSDEs have solutions. We also provide a uniqueness theorem for BSDEs with jumps by giving a comparison theorem based on the comparison for Brownian BSDEs. We give in particular some results for quadratic BSDEs. As applications, we study the pricing and the hedging of a European option in a market with a single jump, and the utility maximization problem in an incomplete market with a finite number of jumps.

Keywords: Backward SDE; Quadratic BSDE; Multiple random marked times; Progressive enlargement of filtrations; Decomposition in the reference filtration; Exponential utility; 60G57; 60J75; 91G10; 93E20 (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (4)

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DOI: 10.1007/s10959-012-0428-1

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