2015- Professor of Econometrics, Director of Research, Amsterdam School of Economics
2003-2015 Professor of Economics at Brown University
MA in Econometrics, Erasmus University Rotterdam (1990);
PhD in Econometrics, Erasmus University Rotterdam (1994).
GMM with weak instruments, uniform inference; identification; dynamic panel data; Factor models in finance.
Associate editor Journal of Econometrics and Journal of Financial Econometrics.