Markups and firm-level export status
---- Acknowledgements -----
This paper was previously circulated under the name "A control function approach to estimate markups" and has benefitted from seminar and conference participants at K.U. Leuven, NYU, Aarhus University, IIOC 2008, Minneapolis Applied Micro Conference, EIFI 2009,CEPR ERWIT 2009, Wharton, NBER PR, Chicago, Vanderbilt, SED 2010. In particular we thank Dan Ackerberg, Andrew Bernard, Allan Collard-Wexler, Jeremy Fox, Penny Goldberg, Tim Kehoe, Joep Konings, Sam Kortum, Marc Melitz, Amil Petrin, Esteban Rossi-Hansberg, Jim Tybout, Patrick Van Cayseele, Hylke Vandenbussche and Frank Verboven for discussions on an earlier draft. We also thank three anonymous referees and the editor for comments and suggestions. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.