English, Article, Journal or magazine article edition: Extended Libor Market Models with Affine and Quadratic Volatility Christian Zühlsdorff

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Physical Description
  • preprint
Language
  • English

Edition details

Title
  • Extended Libor Market Models with Affine and Quadratic Volatility
Author
  • Christian Zühlsdorff
Physical Description
  • preprint
Notes
  • The market model of interest rates specifies simple forward or Libor rates as lognormally distributed, their stochastic dynamics has a linear volatility function. In this paper, the model is extended to quadratic volatility functions which are the product of a quadratic polynomial and a level-independent covariance matrix. The extended Libor market models allow for closed form cap pricing formulae, the implied volatilities of the new formulae are smiles and frowns. We give examples for the possible shapes of implied volatilities. Furthermore, we derive a new approximative swaption pricing formula and discuss its properties. The model is calibrated to market prices, it turns out that no extended model specification outperforms the others. The criteria for model choice should thus be theoretical properties and computational efficiency.
  • forward Libor rates, Libor market model, affine volatility, quadratic volatility, dervatives pricing, closed form solutions, LMM, BGM
  • RePEc:bon:bonedp:bgse6_2002
Language
  • English
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