Bruno Dupire

Bruno Dupire studied mathematics and physics and began his career in quantitative finance at Société Générale and then Paribas, where he developed the mathematical framework that would become his most lasting contribution. In 1994 he published a landmark paper deriving what became known as the Dupire local volatility model — a method for constructing a consistent volatility surface from observed market option prices such that the model reproduces all quoted European option prices exactly. The insight was that if an implied volatility surface exists, there is a unique diffusion process (defined by a local volatility function of spot and time) consistent with that surface. This work was independently and nearly simultaneously developed by Emanuel Derman and Iraj Kani at Goldman Sachs. The Dupire equation became the workhorse of equity derivatives desks globally, providing a tractable framework for pricing exotic options consistently with the vanilla market. Beyond local volatility, Dupire made significant contributions to the theory of stochastic volatility, the Fokker-Planck equation in finance, functional Itô calculus, and the pricing of volatility derivatives. He joined Bloomberg LP where he continues to lead quantitative research. He is the recipient of numerous industry awards including the Risk Hall of Fame designation. His 1994 paper is one of the most cited in the entire quantitative finance literature.