Serge Darolles is Professor of Finance at Paris–Dauphine University in France, and member of the Quantitative Management Initiative (QMI) scientific committee. His research interests include financial econometrics, liquidity and hedge fund analysis. He has written numerous articles, which have been published in academic journals.Christian Gourieroux is Professor at the University of Toronto in Canada, and Chair of the Finance Laboratory at the Center for Research in Economics and Statistics (CREST) in Paris.