2000 character limit reached
Minimal supersolutions for BSDEs with singular terminal condition and application to optimal position targeting (1504.01150v2)
Published 5 Apr 2015 in math.PR, math.OC, and q-fin.CP
Abstract: We study the existence of a minimal supersolution for backward stochastic differential equations when the terminal data can take the value +$\infty$ with positive probability. We deal with equations on a general filtered probability space and with generators satisfying a general monotonicity assumption. With this minimal supersolution we then solve an optimal stochastic control problem related to portfolio liquidation problems. We generalize the existing results in three directions: firstly there is no assumption on the underlying filtration (except completeness and quasi-left continuity), secondly we relax the terminal liquidation constraint and finally the time horizon can be random.