Journal of Computational Finance

On extensions of the Barone-Adesi and Whaley method to price American-type options

Ludovic Mathys

  • The article generalizes the quadratic approximation scheme of Barone-Adesi and Whaley as well as several of its extensions and exemplifies the approach under certain jump-diffusion dynamics.
  • The method results in Nth order algorithms that provide an efficient and increasingly accurate way to price American options in certain jump-diffusion models as well as American barrier-type options under the Black–Scholes framework.
  • The dominance of the higher-order algorithms over their respective lower-order versions is demonstrated in an extensive numerical analysis.

This paper provides an efficient and accurate hybrid method to price American standard options in certain jump-diffusion models and American barrier-type options under the Black–Scholes framework. Our method generalizes the quadratic approximation scheme of Barone-Adesi and Whaley and several of its extensions. Using perturbative arguments, we decompose the early exercise pricing problem into subproblems of different orders and solve these subproblems successively. The solutions obtained are combined to recover approximations to the original pricing problem of multiple orders, with the zeroth-order version matching the general Barone-Adesi–Whaley ansatz. We test the accuracy and efficiency of the approximations via numerical simulations. The results show a clear dominance of higher-order approximations over their respective zeroth-order versions and reveal that significantly more pricing accuracy can be obtained by relying on approximations of the first few orders. In addition, they suggest that increasing the order of any approximation by one generally refines the pricing precision; however, this happens at the expense of greater computational costs.

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