Abstract
In this paper, we study the existence, uniqueness, and stability of solutions to the pricing problem of European continuous-installment options under the regime-switching model based on a numerical approach. For this, we consider a two-state continuous-time Markov chain for the regime-switching model and a one-dimensional finite element method for the numerical scheme. Under our proposed model and the installment option feature for the option holder to continue paying installments until maturity and receive payoff or to stop installments and terminate the contract, the valuation problem has been formulated as coupled partial differential equations (CPDE) with free boundaries. For this problem, we obtained some appropriate assumptions for the model parameters to prove that the pricing problem has unique solutions under the regime-switching model. We also illustrated some proven theorems to show the stability of solutions with a numerical approach. Finally, some numerical examples are considered to show the performance of the obtained theoretical results through numerical implementations.
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This research was supported by Shahid Beheshti University.
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Heidari, S. A finite element method for pricing of continuous-installment options under a Markov-modulated model: existence, uniqueness, and stability of solutions. Soft Comput 28, 3341–3351 (2024). https://doi.org/10.1007/s00500-023-08601-2
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DOI: https://doi.org/10.1007/s00500-023-08601-2