Valuation of financial assets and arbitrage
Enseignant responsable :
Volume horaire : 30Description du contenu de l'enseignement :
Course outline:
I. Discrete time modelling
I.1. Financial assets
I.2. The No arbitrage condition and martingale measures (FTAP)
I.3. Pricing and hedging of European options; market completeness and 2nd FTAP
I.4. Pricing and hedging of American options (in a complete market)
II. Continuous time modelling
II.1. Financial assets as Itô processes : general theory
II.2. Markovian models : PDE pricing, delta-hedging (European options, barrier options, American options)
II.3. Local volatility models and Dupire's formula
II.4. Stochastic volatility models : how to deal with market incompleteness; (semi-)static hedging; specific models and their properties
Compétence à acquérir :
The lecture starts with discrete time models which can be viewed as a proxy for continuous settings, and for which we present in detail the theory of arbitrage pricing. We then develop on the theory of continuous time models. We start with a general Itô-type framework and then specialize to different situations: Markovian models, local and stochastic volatility models. For each of them, we discuss the valuation and the hedging of different types of options : plain Vanilla and barrier options, American options, options on realized variance, etc. Finally, we present several specific volatility models (Heston, CEV, SABR,...) and discuss their specificities.
Bibliographie, lectures recommandées
Bouchard B. et Chassagneux J.F., Fundamentals and advanced Techniques in derivatives hedging, Springer, 2016. Lamberton D. et B. Lapeyre, Introduction au calcul stochastique appliqué à la finance, Ellipses, Paris, 1999.