Lévy processes and self-decomposability in finance

• Autorzy: Bingham N. H.
• Języki publikacji: EN

Abstrakty

EN

The main theme of Urbanik’s work was infinite divisibility and its ramifications. The aim of this memorial article is to trace the application of this theme in mathematical finance, one of the main growth areas in contemporary probability theory. We begin in Section 1 with a discussion of the nature of prices. In particular, we focus on whether (or when) prices may be taken as continuous, with a view to using Lévy processes to model the case of prices with jumps. We turn in Section 2 to asset return distributions; prime candidates for modelling here include the normal, hyperbolic and Student t cases. In Section 3, we turn to distributions of type G, in particular, those in which the mixing law is not only infinitely divisible but also self-decomposable (i.e. in the class SD), which includes all three cases above. Then in Section 4 we turn to the dynamic counterpart of this, in which the law of class SD occurs as the limit law of a stochastic process of Ornstein-Uhlenbeck type, with Lévy driving noise. Finally, in Section 5 we discuss stochastic volatility models.

Słowa kluczowe

EN

infinite divisibility; self-decomposability; type G; elliptically contoured distributions; mathematical finance; portfolios; stochastic volatility; processes of Ornstein-Uhlenbeck type

• Wydawca: Wrocław University of Science and Technology
• Czasopismo: Probability and Mathematical Statistics
• Rocznik: 2006
• Tom: Vol. 26, Fasc. 2
• Strony: 367--378
• Opis fizyczny: Bibliogr. 48 poz.

Twórcy

autor

Bingham N. H.

• Department of Probability and Statistics, University of Sheffield, Sheffield S3, 7RH, UK

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