© 2001 by Institute of Mathematics and its Applications
A finite volume approach for contingent claims valuation
1 Financial Analytics and Structured Transactions, Bear Stearns, 245 Park Avenue, New York, NY 10167, USA. Email: rzvan@bear.com 2 Department of Computer Science, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1. Email: paforsyth@elora.uwaterloo.ca 3 Centre for Advanced Studies in Finance, University of Waterloo, Canada. Email: kvetzal@watarts.uwaterloo.ca
This paper presents a finite volume approach for solving two-dimensional contingent claims valuation problems. The contingent claims PDEs are in non-divergence form. The finite volume method is more flexible than finite difference schemes which are often described in the finance literature and frequently used in practice. Moreover, the finite volume method naturally handles cases where the underlying partial differential equation becomes convection dominated or degenerate. A compact method is developed which uses a high-order flux limiter for the convection terms. This paper will demonstrate how a variety of two-dimensional valuation problems can all be solved using the same approach. The generality of the approach is in part due to the fact that changes caused by different model specifications are localized. Constraints on the solution are treated in a uniform manner using a penalty method. A variety of illustrative example computations are presented.
Key Words: finite volume; positive coefficient; contingent claims; option pricing