In 1997, the introduction of the LIBOR Market Model revolutionized the modeling of interest rates, as it finally allowed for closed-form pricing formulae of the most common interest rate products. The purpose of this thesis is to introduce an extension to this model that is suitable to both incorporate sudden market shocks as well as changes in the overall economic climate into the interest rate dynamics. This is achieved by substituting the simple diffusion process of the original LIBOR Market model by regime-switching jump diffusions. By exploiting the relation between bond prices, forward rates, and simple rates, we demonstrate that such an extension to the original model can be embedded into a generalized regime-switching Heath-Jarrow-Morton model and hereby prove that the considered market is arbitrage-free. We furthermore show, how interest rates swaps and their derivatives can be related to the model.
With measure changes playing a central role in the derivation of the model, we investigate the consequences of these changes on all modeled entities as well as the underlying Markov chain. Despite the apparent complexity of our approach, we demonstrate in the course of this thesis, that the pricing and calibration within a regime-switching jump diffusion model for interest rates is nonetheless possible and yields satisfactory results. Using the Fourier pricing technique, we derive pricing formula for both a regime-switching model with and without jumps and calibrate the model to real data.
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In 1997, the introduction of the LIBOR Market Model revolutionized the modeling of interest rates, as it finally allowed for closed-form pricing formulae of the most common interest rate products. The purpose of this thesis is to introduce an extension to this model that is suitable to both incorporate sudden market shocks as well as changes in the overall economic climate into the interest rate dynamics. This is achieved by substituting the simple diffusion process of the original LIBOR Market...
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