Contribution à l’Etude des Convergences Stochastiques des Mesures Aléatoires (1976)L'Importance de la Probabilité Forward Neutre dans une Approche Stochastique des Taux d'Intérêt (1990)
Hélyette Geman is a French academic in mathematical finance. In 2022 she became the first woman in 41 years to be named ‘Financial Engineer of the Year’ by the International Association of Financial Engineers. Her career has spanned several sub-disciplines including catastrophic insurance, probability theory, and the finance of commodities. Her academic institutions include ESSEC Business School, the University Paris Dauphine (Master 203), and Birkbeck, University of London. She is currently a Research Professor at Johns Hopkins University.
Notable Research and Activities
Helyette Geman is most known for:
Having been the first to formally introduce the forward measure for the valuation of interest rate derivatives.
Having coined the term numéraire in the context of option pricing and commodities portfolio management.
Having exhibited a stochastic clock driven by order flow, leading to the normality of asset returns.
Changes of Numeraire, Changes of Probability Measure and Option Pricing, with Nicole El Karoui, Jean-Charles Rochet. Journal of Applied Probability, Vol. 32, No. 2 (Jun., 1995), pp. 443–458
The Fine Structure of Asset Returns: An Empirical Investigation, with Peter Carr, Dilip B. Madan, and Marc Yor. The Journal of Business 75 (2) (April 2002): 305–332.
Order Flow, Transaction Clock and Normality of Asset Returns, Journal of Finance, Oct 2000, Vol 55, pp. 2259-2284
Stochastic Time Changes in Catastrophe Option Pricing Insurance, Mathematics and Economics, Dec 1997, Vol 21, pp. 185-193.
Awards
2022 IAQF/Northfield Financial Engineer of the Year Award
^Geman, Helyette (2005). Commodities and Commodity Derivatives: Modelling and Pricing for Agriculturals, Metals and Energy. Wiley Finance. ISBN978-0470012185.