Frontiers of Mathematics in China >
A contagion model with Markov regime-switching intensities
Received date: 19 Dec 2012
Accepted date: 08 May 2013
Published date: 01 Feb 2014
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We consider a two-dimensional reduced form contagion model with regime-switching interacting default intensities. The model assumes the intensities of the default times are driven by macro-economy described by a homogeneous Markov chain as well as the other default. By using the idea of ‘change of measure’ and some closed-form formulas for the Laplace transforms of the integrated intensity processes, we derive the two-dimensional conditional and unconditional joint distributions of the default times. Based on these results, we give the explicit formulas for the fair spreads of the first-to-default and second-to-default credit default swaps (CDSs) on two underlyings.
Yinghui DONG , Guojing WANG . A contagion model with Markov regime-switching intensities[J]. Frontiers of Mathematics in China, 2014 , 9(1) : 45 -62 . DOI: 10.1007/s11464-013-0311-0
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