Abstract
We reduce a problem of pricing continuously monitored defaultable securities (barrier options, corporate debts) in a stochastic interest rate framework to calculations of boundary crossing probabilities (BCP) for Brownian Motion (BM) with stochastic boundaries. In the case when the interest rate is governed by a linear stochastic equation (Vasicek model) we suggest a numerical algorithm for calculation of BCP based on a piece-wise linear approximation for the stochastic boundaries. We also find an estimation of the rate of convergence of the suggested approximation and illustrate results by numerical examples.
Original language | English |
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Title of host publication | Mathematical Control Theory and Finance |
Editors | Andrey Sarychev, Albert Shiryaev, Manuel Guerra, Maria do Rosário Grossinho |
Place of Publication | Berlin; London |
Publisher | Springer, Springer Nature |
Pages | 251-263 |
Number of pages | 13 |
ISBN (Electronic) | 9783540695325 |
ISBN (Print) | 9783540695318 |
DOIs | |
Publication status | Published - 2008 |