Journal of Computational Finance
ISSN:
1460-1559 (print)
1755-2850 (online)
Editor-in-chief: Christoph Reisinger
Krylov subspace reduction and its extensions for option pricing
Vladimir Druskin and Leonid Knizhnerman, Tanya Tamarchenko, Sergio Kostek
Abstract
ABSTRACT
Computationally expensive time-stepping is the bottleneck of finite-difference methods used for valuing multi-asset options. The authors consider a novel algorithm with radically accelerated convergence, which is based on an optimal approximation of the matrix exponential. This algorithm is modified to compute the price of American options. A reduction of one order in computational time compared with one of the most efficient variants of the Crank-Nicolson scheme is observed with a two-factor convertible bond model.
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