American options valuation leads to solve an optimal stopping problem or a variational inequality. These two approaches involve the knowledge of a free boundary, boundary of the so-called exercise region. As we are not able to get a closed formula for the American option value function, we will approximate the free boundary by this of a Bermudean option. Indeed a Bermudean option value function is the solution of an optimal stopping problem which can be viewed as a free boundary problem. Thanks to a maximum principle, we evaluate the difference between Bermudean and American boundaries.
CITATION STYLE
Chevalier, E. (2007). Bermudean approximation of the free boundary associated with an american option. In International Series of Numerical Mathematics (Vol. 154, pp. 137–147). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-7643-7719-9_14
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