Abstract
We develop a method for pricing financial options under uncertain volatility. The method is based on the dynamic programming principle and a Fourier cosine expansion method. Local errors in the vicinity of domain boundaries, originating from the use of Fourier series expansions, may hamper the algorithm’s convergence. We use an extrapolation method to deal with these errors.
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The methodology above can also be applied if the approximated continuation value is inaccurate in a certain area [a, x ∗ ∗ ].
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Ruijter, M.J., Oosterlee, C.W. (2012). The COS Method for Pricing Options Under Uncertain Volatility. In: Cummins, M., Murphy, F., Miller, J. (eds) Topics in Numerical Methods for Finance. Springer Proceedings in Mathematics & Statistics, vol 19. Springer, Boston, MA. https://doi.org/10.1007/978-1-4614-3433-7_6
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DOI: https://doi.org/10.1007/978-1-4614-3433-7_6
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