article

Alessandro Gnoatto and Martino Grasselli and José Da Fonseca


Finance Group (2013) : A flexible matrix Libor model with smiles




A flexible matrix Libor model with smiles

Alessandro Gnoatto and Martino Grasselli and José Da Fonseca




article

Journal of Economic Dynamics and Control

We present a flexible approach for the valuation of interest rate derivatives based on affine processes. We extend the methodology proposed in Keller-Ressel et al. (in press) by changing the choice of the state space. We provide semi-closed-form solutions for the pricing of caps and floors. We then show that it is possible to price swaptions in this multifactor setting with a good degree of analytical tractability. This is done via the Edgeworth expansion approach developed in Collin-Dufresne and Goldstein (2002). A numerical exercise illustrates the flexibility of Wishart Libor model in describing the movements of the implied volatility surface.

To cite this publication :


Giorgia Callegaro, Lucio Fiorin, Martino Grasselli: Quantized calibration in local volatility models. Dans: Risk Magazine, 9 , p. 62-67, 2015, ISSN: 0952-8776.





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