Arnaud de ServignyArnaud de Servigny, Ph.D., is the head of Quantitative Analytics for Standard & Poor's. A popular speaker at conferences and seminars throughout Europe, de Servigny is the author of a number of books and articles on finance and credit risk. Olivier Renault, Ph.D., works in portfolio modeling in the quantitative analytics and products team for Standard & Poor's Risk Solutions. Prior to joining Standard and Poor's, Olivier was a lecturer on finance at the London School of Economics where he taught derivatives and risk. Read More Read Less