Calibration to American Options: Numerical Investigation of the de–Americanization Method
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American options are the reference instruments for the model calibration of a large and important class of single stocks. For this task, a fast and accurate pricing algorithm is indispensable. The literature mainly discusses pricing methods for American options that are based on Monte Carlo, tree and partial differential equa- tion methods. We present an alternative approach that has become popular under the name de–Americanization in the financial industry. The method is easy to im- plement and enjoys fast run-times (compared to a direct calibration to American options). Since it is based on ad hoc simplifications, however, theoretical results guaranteeing reliability are not available. To quantify the resulting methodological risk, we empirically test the performance of the de–Americanization method for calibration. We classify the scenarios in which de–Americanization performs very well. However, we also identify the cases where de–Americanization oversimplifies and can result in large errors.
AuthorsBurkovska, O; Gaß, M; GLAU, KB; Mahlstedt, M; Schoutens, W; Wohlmuth, B
- Mathematics 
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