A simple numerical method for pricing an American put option

Beom Jin Kim, Yong Ki Ma, Hi Jun Choe

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


We present a simple numerical method to find the optimal exercise boundary in an American put option. We formulate an intermediate function with the fixed free boundary that has Lipschitz character near optimal exercise boundary. Employing it, we can easily determine the optimal exercise boundary by solving a quadratic equation in time-recursive way. We also present several numerical results which illustrate a comparison to other methods.

Original languageEnglish
Article number128025
JournalJournal of Applied Mathematics
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Applied Mathematics


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