From local volatility to local L
vy models
Authors:
Peter Carr a;
Helyette Geman b;
Dilip B. Madan c;
Marc Yor d
| Affiliations: | a Courant Institute, New York University, USA |
b Universit Paris-Dauphine and ESSEC, France |
|
| c Robert H Smith School of Business, University of Maryland, USA | |
d Laboratoire de Probabiliti s et Mod les al atoires Universit Paris VI and Universit Paris VII, France |
DOI:
10.1080/14697680400000039
Publication Frequency:
8 issues per year
Number of References: 25
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Abstract
We define the class of local L
vy processes. These are L vy processes time changed by an inhomogeneous local speed function. The local speed function is a deterministic function of time and the level of the process itself. We show how to reverse engineer the local speed function from traded option prices of all strikes and maturities. The local L vy processes generalize the class of local volatility models. Closed forms for local speed functions for a variety of cases are also presented. Numerical methods for recovery are also described.
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| view references (25) : view citations |

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