Emanuel Derman is a Professor of Professional Practice and Director of the Financial Engineering Program at Columbia University. Earlier in his career, he worked on Wall Street, running quantitative strategies research groups in fixed income, equities, and risk management. He developed the Black-Derman-Toy interest rate model and the Derman-Kani local volatility model, two financial models that have become industry standards today. Derman also published countless articles in elementary particle physics, finance, and computer science.