relation: http://miis.maths.ox.ac.uk/miis/595/ title: Approximate solution to a hybrid model with stochastic volatility: a singular-perturbation strategy creator: Fatima, T creator: Grzelak, L creator: Hendriks, H subject: Discrete subject: None/Other subject: Finance description: We study a hybrid model of Schobel-Zhu-Hull-White-type from a singular-perturbation-analysis perspective. The merit of the paper is twofold: On one hand, we find boundary conditions for the deterministic non-linear degenerate parabolic partial differential equation for the evolution of the stock price. On the other hand, we combine two-scales regular- and singular-perturbation techniques to find an approximate solution to the pricing PDE. The aim is to produce an expression that can be evaluated numerically very fast. date: 2009 type: Study Group Report type: NonPeerReviewed format: application/pdf language: en identifier: http://miis.maths.ox.ac.uk/miis/595/1/Wag4.pdf identifier: Fatima, T and Grzelak, L and Hendriks, H (2009) Approximate solution to a hybrid model with stochastic volatility: a singular-perturbation strategy. [Study Group Report]